Download or read book Mixed and Doped Solid Sorbents for CO2 Capture Applications written by and published by . This book was released on 2016 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this presentation are to capture CO2 we need materials with optimal performance and low costs; establish a theoretical procedure to identify most potential candidates of CO2 solid sorbents from a large solid material databank; computational synthesis new materials to fit industrial needs; and explore the optimal working conditions for the promised CO2 solid sorbents, especially from room to warm T ranges with optimal energy usage.

Download or read book Theoretical Screening of Mixed Solid Sorbent for Applications to CO2 Capture Technology written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since current technologies for capturing CO2 to fight global climate change are still too energy intensive, there is a critical need for development of new materials that can capture CO2 reversibly with acceptable energy costs. Accordingly, solid sorbents have been proposed to be used for CO2 capture applications through a reversible chemical transformation. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The calculated thermodynamic properties of different classes of solid materials versus temperature and pressure changes were further used to evaluate the equilibrium properties for the CO2 adsorption/desorption cycles. According to the requirements imposed by the pre- and post- combustion technologies and based on our calculated thermodynamic properties for the CO2 capture reactions by the solids of interest, we were able to screen only those solid materials for which lower capture energy costs are expected at the desired pressure and temperature conditions. Only those selected CO2 sorbent candidates were further considered for experimental validations. The ab initio thermodynamic technique has the advantage of identifying thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. Such methodology not only can be used to search for good candidates from existing database of solid materials, but also can provide some guidelines for synthesis new materials. In this presentation, we apply our screening methodology to mixing solid systems to adjust the turnover temperature to help on developing CO2 capture Technologies.

Download or read book Theoretical Screening of Mixed Solid Sorbent for Applications to CO sub 2 Capture Technology written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since current technologies for capturing CO2 to fight global climate change are still too energy intensive, there is a critical need for development of new materials that can capture CO2 reversibly with acceptable energy costs. Accordingly, solid sorbents have been proposed to be used for CO2 capture applications through a reversible chemical transformation. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The calculated thermodynamic properties of different classes of solid materials versus temperature and pressure changes were further used to evaluate the equilibrium properties for the CO2 adsorption/desorption cycles. According to the requirements imposed by the pre- and post- combustion technologies and based on our calculated thermodynamic properties for the CO2 capture reactions by the solids of interest, we were able to screen only those solid materials for which lower capture energy costs are expected at the desired pressure and temperature conditions. Only those selected CO2 sorbent candidates were further considered for experimental validations. The ab initio thermodynamic technique has the advantage of identifying thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. Such methodology not only can be used to search for good candidates from existing database of solid materials, but also can provide some guidelines for synthesis new materials. In this presentation, we apply our screening methodology to mixing solid systems to adjust the turnover temperature to help on developing CO2 capture Technologies.

Download or read book Theoretical Screening of Solid Sorbents for CO sub 2 Capture Applications written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The work reported in this presentation was establishing a theoretical procedure to identify most potential candidates of CO2 solid sorbents from a large solid material databank; and to explore the optimal working conditions for the promised CO2 solid sorbents and provide guidelines to the experimentalists. Our methodology can predict thermodynamic properties of solid materials and their CO2 capture reactions. Single solid may not satisfy the industrial operating conditions as CO2 sorbent, however, by mixing two or more solids, the new formed solid may satisfy the industrial needs. By exploring series of lithium silicates with different Li2O/SiO2 ratio, we found that with decreasing Li2O/SiO2 ratio the corresponding silicate has a lower turnover temperature and vice versa. Compared to pure MgO, the Na2CO3, K2CO3 and CaCO3 promoted MgO sorbent has a higher turnover T. These results provide guidelines to synthesize sorbent materials by mixing different solids with different ratio.

Download or read book Computational Modeling of Mixed Solids for CO2 CaptureSorbents written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since current technologies for capturing CO2 to fight global climate change are still too energy intensive, there is a critical need for development of new materials that can capture CO2 reversibly with acceptable energy costs. Accordingly, solid sorbents have been proposed to be used for CO2 capture applications through a reversible chemical transformation. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The calculated thermodynamic properties of different classes of solid materials versus temperature and pressure changes were further used to evaluate the equilibrium properties for the CO2 adsorption/desorption cycles. According to the requirements imposed by the pre- and post- combustion technologies and based on our calculated thermodynamic properties for the CO2 capture reactions by the solids of interest, we were able to screen only those solid materials for which lower capture energy costs are expected at the desired pressure and temperature conditions. Only those selected CO2 sorbent candidates were further considered for experimental validations. The ab initio thermodynamic technique has the advantage of identifying thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. Such methodology not only can be used to search for good candidates from existing database of solid materials, but also can provide some guidelines for synthesis new materials. In this presentation, we apply our screening methodology to mixing solid systems to adjust the turnover temperature to help on developing CO2 capture Technologies.

Download or read book Efficient Theoretical Screening of Solid Sorbents for CO2 Capture Applications written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide is a major combustion product of coal, which once released into the air can contribute to global climate change. Current CO2 capture technologies for power generation processes including amine solvents and CaO-based sorbent materials require very energy intensive regeneration steps which result in significantly decreased efficiency. Hence, there is a critical need for new materials that can capture and release CO2 reversibly with acceptable energy costs if CO2 is to be captured and sequestered economically. Inorganic sorbents are one such class of materials which typically capture CO2 through the reversible formation of carbonates. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The ab initio thermodynamic technique has the advantage of identifying thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. For a given solid, the first step is to attempt to extract thermodynamic properties from thermodynamic databases and available literatures. If the thermodynamic properties of the compound of interest are unknown, an ab initio thermodynamic approach is used to calculate them. These properties expressed conveniently as chemical potentials and heat of reactions, either from databases or from calculations, are further used for computing the thermodynamic reaction equilibrium properties of the CO2 absorption/desorption cycle based on the chemical potential and heat of reaction. Only those solid materials for which lower capture energy costs are predicted at the desired process conditions are selected as CO2 sorbent candidates and further considered for experimental validations. Solid sorbents containing alkali and alkaline earth metals have been reported in several previous studies to be good candidates for CO2 sorbent applications due to their high CO2 absorption capacity at moderate working temperatures. In addition to introducing our selection process in this presentation, we will present our results for solid systems of alkali and alkaline metal oxides, hydroxides and carbonates/bicarbonates to validate our methodology. Additionally, applications of our computational method to mixed solid systems of Li2O and SiO2 with different mixing ratios, we showed that increasing the Li2O/SiO2 ratio in lithium silicates increases their corresponding turnover temperatures for CO2 capture reactions. These theoretical predictions are in good agreement with available experimental findings.

Download or read book Theoretical Screening of Solid Sorbents for CO2 Capture Applications written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The work reported in this presentation was establishing a theoretical procedure to identify most potential candidates of CO2 solid sorbents from a large solid material databank; and to explore the optimal working conditions for the promised CO2 solid sorbents and provide guidelines to the experimentalists. Our methodology can predict thermodynamic properties of solid materials and their CO2 capture reactions. Single solid may not satisfy the industrial operating conditions as CO2 sorbent, however, by mixing two or more solids, the new formed solid may satisfy the industrial needs. By exploring series of lithium silicates with different Li2O/SiO2 ratio, we found that with decreasing Li2O/SiO2 ratio the corresponding silicate has a lower turnover temperature and vice versa. Compared to pure MgO, the Na2CO3, K2CO3 and CaCO3 promoted MgO sorbent has a higher turnover T. These results provide guidelines to synthesize sorbent materials by mixing different solids with different ratio.

Download or read book Theoretical Screening of Mixed Solid Sorbents for CO sub 2 Capture written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We are establishing a theoretical procedure to identify most potential candidates of CO2 solid sorbents from a large solid material databank to meet the DOE programmatic goal for energy conversion; A further objective is to explore the optimal working conditions for the promised CO2 solid sorbents, especially from room to warm T ranges with optimal energy usage, used for both pre- and post-combustion capture technologies.

Download or read book Theoretical Screening of Solid Sorbents for CO sub 2 Capture written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: By combining thermodynamic database searches with density functional theory and lattice phonon dynamics, a screening methodology was developed to identify promising solid sorbent candidates for CO2 capture. This methodology has been used to screen hundreds of solid compounds and some of the promising candidates to date have been reported in literature. This screening methodology is particularly relevant for the case of materials for which experimental thermodynamic data is not available. Such areas of interest are represented by the case of solid mixtures and doped materials, where thermodynamic data are generally not available but for which the crystallographic structure is known or can be easily determined.

Download or read book Theoretical Calculating the Thermodynamic Properties of Solid Sorbents for CO sub 2 Capture Applications written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since current technologies for capturing CO2 to fight global climate change are still too energy intensive, there is a critical need for development of new materials that can capture CO2 reversibly with acceptable energy costs. Accordingly, solid sorbents have been proposed to be used for CO2 capture applications through a reversible chemical transformation. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The calculated thermodynamic properties of different classes of solid materials versus temperature and pressure changes were further used to evaluate the equilibrium properties for the CO2 adsorption/desorption cycles. According to the requirements imposed by the pre- and post- combustion technologies and based on our calculated thermodynamic properties for the CO2 capture reactions by the solids of interest, we were able to screen only those solid materials for which lower capture energy costs are expected at the desired pressure and temperature conditions. Only those selected CO2 sorbent candidates were further considered for experimental validations. The ab initio thermodynamic technique has the advantage of identifying thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. Such methodology not only can be used to search for good candidates from existing database of solid materials, but also can provide some guidelines for synthesis new materials. In this presentation, we first introduce our screening methodology and the results on a testing set of solids with known thermodynamic properties to validate our methodology. Then, by applying our computational method to several different kinds of solid systems, we demonstrate that our methodology can predict the useful information to help developing CO2 capture Technologies.

Download or read book Advances in Carbon Capture written by Mohammad Reza Rahimpour and published by Woodhead Publishing. This book was released on 2020-08-04 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Carbon Capture reviews major implementations of CO2 capture, including absorption, adsorption, permeation and biological techniques. For each approach, key benefits and drawbacks of separation methods and technologies, perspectives on CO2 reuse and conversion, and pathways for future CO2 capture research are explored in depth. The work presents a comprehensive comparison of capture technologies. In addition, the alternatives for CO2 separation from various feeds are investigated based on process economics, flexibility, industrial aspects, purification level and environmental viewpoints. - Explores key CO2 separation and compare technologies in terms of provable advantages and limitations - Analyzes all critical CO2 capture methods in tandem with related technologies - Introduces a panorama of various applications of CO2 capture

Download or read book Amine pillared Nanosheet Adsorbents for CO2 Capture Applications written by Hui Jiang and published by . This book was released on 2014 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amine-functionalized solid adsorbents have gained attention within the last decade for their application in carbon dioxide capture, due to their many advantages such as low energy cost for regeneration, tunable structure, elimination of corrosion problems, and additional advantages. However, one of the challenges facing this technology is to accomplish both high CO2 capture capacity along with high CO2 diffusion rates concurrently. Current amine-based solid sorbents such as porous materials similar to SBA-15 have large pores diffusion entering molecules; however, the pores become clogged upon amine inclusion. To meet this challenge, our group's solution involves the creation of a new type of material which we are calling-amino-pillared nanosheet (APN) adsorbents which are generated from layered nanosheet precursors. These materials are being proposed because of their unique lamellar structure which exhibits ability to be modified by organic or inorganic pillars through consecutive swelling and pillaring steps to form large mesoporous interlayer spaces. After the expansion of the layer space through swelling and pillaring, the large pore space can be functionalized with amine groups. This selective functionalization is possible by the choice of amine group introduced. Our choice, large amine molecules, do not access the micropore within each layer; however, either physically or chemically immobilized onto the surface of the mesoporous interlayer space between each layer. The final goal of the research is to investigate the ability to prepare APN adsorbents from a model nanoporous layered materials including nanosheets precursor material MCM-22(P) and nanoporous layered silicate material AMH-3. MCM-22(P) contains 2-dimensional porous channels, 6 membered rings (MB) openings perpendicular to the layers and 10 MB channels in the plane of the layers.1 However, the transport limiting openings (6 MB) to the layers is smaller than CO2 gas molecules.2,3 In contrast, AMH-3 has 3D microporous layers with 8 MB openings in the plane of the layers, as well as perpendicular to the layers, which are larger than CO2 molecules. Based on the structure differences between nanosheets precursor material MCM-22(P) and nanoporous layered silicate material AMH-3, the latter might be more suitable for CO2 capturer application as an APN candidate material. However, none of the assumptions above have been approved experimentally. In this study, the influence of the amine loading on adsorption capacity and kinetics of adsorption for the mixed porosity material pillared MCM-22 (P) (also called MCM-36) is studied systematically, in order to determine a potential route to achieve a final material with both high amine loading and high adsorption capacity. We first synthesized MCM-22(P), followed by swelling and pillaring to create MCM-36. Polymeric amines such as polyethylenimine (PEI) are used as an organic component of the supported amine adsorbents, with varying polymer loadings within the adsorbents used. The kinetics and diffusion properties of carbon dioxide capture on a MCM-36 pillared material impregnated with amine containing Polyethylenimine polymers has been investigated. It was determined that the introduction of amine polymer cannot be used to improve the capture capacity of the support over that of the bare material, due to the fact that with the addition of a high loading of amine polymer the large pore diffusion channels become impossible for carbon dioxide molecules to diffuse through. This sets an upper limit to the capture capacity of polymer impregnated MCM-36 for carbon dioxide which does not surpass that for the initial bare material, and greatly reduces the utility of using this sort of amine-solid adsorbent for carbon capture plans in the future.

Download or read book Ab Initio Thermodynamic Approach to Identify Mixed Solid Sorbents for CO2 Capture Technology written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Because the current technologies for capturing CO2 are still too energy intensive, new materials must be developed that can capture CO2 reversibly with acceptable energy costs.

Download or read book Nanomaterials for Carbon Dioxide Capture and Conversion Technologies written by Shaukat Ali Mazari and published by Elsevier. This book was released on 2022-10-04 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials for Carbon Dioxide Capture and Conversion Technologies focuses on the applications of nanomaterials for CO2 capture and conversion. The book highlights the need for CO2 mitigation, followed by the basic principles for CO2 capture and conversion, using different nanomaterials, while also discussing and highlighting challenges and perspectives. Abundant CO2 emissions from industries and the transportation sector are a threat to the planet due to overwhelming concerns regarding CO2-induced climate change. Nanomaterials are being widely investigated for CO2 capture and conversion processes. Nano absorbents, adsorbents and nanomembranes for CO2 capture, nano catalysts for catalytic CO2 conversion, and chemical fixation of CO2 are some of the broader applications of nanomaterials for CO2 mitigation. - Helps readers understand the basic mechanisms and theories behind CO2 capture and conversion using nanomaterials - Provides information on the range of nanomaterials types used in CO2 capture and storage systems - Assesses the major challenges for integrating nanotechnology into carbon dioxide capture and storage systems at an industrial scale

Download or read book Applications of Ionic Liquids in Polymer Science and Technology written by David Mecerreyes and published by Springer. This book was released on 2015-04-08 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the latest knowledge in the science and technology of ionic liquids and polymers in different areas. Ionic liquids (IL) are actively being investigated in polymer science and technology for a number of different applications. In the first part of the book the authors present the particular properties of ionic liquids as speciality solvents. The state-of-the art in the use of ionic liquids in polymer synthesis and modification reactions including polymer recycling is outlined. The second part focuses on the use of ionic liquids as speciality additives such as plasticizers or antistatic agents. The third part examines the use of ionic liquids in the design of functional polymers (usually called polymeric ionic liquids (PIL) or poly(ionic liquids)). Many important applications in diverse scientific and industrial areas rely on these polymers, like polymer electrolytes in electrochemical devices, building blocks in materials science, nanocomposites, gas membranes, innovative anion sensitive materials, smart surfaces, and a countless set range of emerging applications in different fields such as energy, optoelectronics, analytical chemistry, biotechnology, nanomedicine or catalysis.

Download or read book Hybrid and Combined Processes for Air Pollution Control written by Aymen Amine Assadi and published by Elsevier. This book was released on 2022-05-19 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid and Combined Processes for Air Pollution Control: Methodologies, Mechanisms and Effect of Key Parameters provides an exhaustive inventory of hybrid and combined processes in the field of air treatment. The book covers principles, the effect of key parameters, technologies and reactors of the processes and their implementation, from lab-scale to industrial scale, also identifying future trends. Sections discuss effects on the environment and living beings, identify novel techniques and innovations, and offer a thorough assessment of the strengths and weaknesses of each. In this well-structured book, chapters are linked to the type of treatment, with a significant part dealing with treatment by transfer processes: (absorption and absorption) and on destruction treatments, such as advanced oxidation processes. - Helps readers select the most appropriate process for air pollution treatment and control - Provides a comprehensive overview of process performance under real conditions, from lab to industrial scale - Identifies future trends in industrial developments and innovation

Download or read book Metal Nanocomposites for Energy and Environmental Applications written by Swatantra P. Singh and published by Springer Nature. This book was released on 2022-01-11 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on recent developments in metal nanomaterials and nanocomposites for energy and environmental application such as pollution control in water, air, and soil pollution. The chapters incorporate carbon-based, metal-based and metal-organic framework based nanomaterials and nanocomposites for emerging contaminants (pharmaceuticals and microplastics) and other traditional pollutants remediation along with energy storage, sensing of air and water polutents and carbon capture & storage (CCS). This book will be of interest to those in academia and industry involved in energy and environmental science & engineering research.