Download or read book Synthesis and Characterization of Polymer Derived Porous Carbons for Gas Adsorption Storage and Separation written by Ali Qajar and published by . This book was released on 2014 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Porous Materials for Carbon Dioxide Capture written by An-Hui Lu and published by Springer Science & Business. This book was released on 2014-04-17 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-authored book provides a comprehensive overview of the latest developments in porous CO2 capture materials, including ionic liquid–derived carbonaceous adsorbents, porous carbons, metal-organic frameworks, porous aromatic frameworks, micro porous organic polymers. It also reviews the sorption techniques such as cyclic uptake and desorption reactions and membrane separations. In each category, the design and fabrication, the comprehensive characterization, the evaluation of CO2 sorption/separation and the sorption/degradation mechanism are highlighted. In addition, the advantages and remaining challenges as well as future perspectives for each porous material are covered. This book is aimed at scientists and graduate students in such fields as separation, carbon, polymer, chemistry, material science and technology, who will use and appreciate this information source in their research. Other specialists may consult specific chapters to find the latest, authoritative reviews. Dr. An-Hui Lu is a Professor at the State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, China. Dr. Sheng Dai is a Corporate Fellow and Group Leader in the Chemical Sciences Division at Oak Ridge National Laboratory (ORNL) and a Professor of Chemistry at the University of Tennessee, USA.

Download or read book Materials for Carbon Capture written by De-en Jiang and published by John Wiley & Sons. This book was released on 2019-12-03 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers a wide range of advanced materials and technologies for CO2 capture As a frontier research area, carbon capture has been a major driving force behind many materials technologies. This book highlights the current state-of-the-art in materials for carbon capture, providing a comprehensive understanding of separations ranging from solid sorbents to liquid sorbents and membranes. Filled with diverse and unconventional topics throughout, it seeks to inspire students, as well as experts, to go beyond the novel materials highlighted and develop new materials with enhanced separations properties. Edited by leading authorities in the field, Materials for Carbon Capture offers in-depth chapters covering: CO2 Capture and Separation of Metal-Organic Frameworks; Porous Carbon Materials: Designed Synthesis and CO2 Capture; Porous Aromatic Frameworks for Carbon Dioxide Capture; and Virtual Screening of Materials for Carbon Capture. Other chapters look at Ultrathin Membranes for Gas Separation; Polymeric Membranes; Carbon Membranes for CO2 Separation; and Composite Materials for Carbon Captures. The book finishes with sections on Poly(amidoamine) Dendrimers for Carbon Capture and Ionic Liquids for Chemisorption of CO2 and Ionic Liquid-Based Membranes. A comprehensive overview and survey of the present status of materials and technologies for carbon capture Covers materials synthesis, gas separations, membrane fabrication, and CO2 removal to highlight recent progress in the materials and chemistry aspects of carbon capture Allows the reader to better understand the challenges and opportunities in carbon capture Edited by leading experts working on materials and membranes for carbon separation and capture Materials for Carbon Capture is an excellent book for advanced students of chemistry, materials science, chemical and energy engineering, and early career scientists who are interested in carbon capture. It will also be of great benefit to researchers in academia, national labs, research institutes, and industry working in the field of gas separations and carbon capture.

Download or read book NH3 Assisted Synthesis of Silicon Oxycarbonitride Ceramics for Gas Capture and Separation written by Cristina Schitco and published by GRIN Verlag. This book was released on 2016-07-25 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2015 in the subject Energy Sciences, grade: 1, Technical University of Darmstadt, course: Materialwissenschaften, language: English, abstract: Our society depends overwhelmingly on carbon based resources (coal, natural gas and oil). The use of carbon based resources to meet the current energy needs of our society is associated with two critical drawbacks, that are: i) carbon based resources are not renewable and ii) burning hydrocarbons and venting the waste gases into atmosphere, e.g., carbon dioxide (CO2), leads to worsening of the greenhouse effect. As a response to these issues, the strategy of so-called “green carbon” has been proposed. This strategy consist of obtaining energies that foresees a gradual transition from carbon based resources to hydrogen based fuel, i.e., “hydrogen economy”, while simultaneously increasing the role of renewable energies. Carbon based resources would ultimately be used for synthesis of high-value chemicals and hydrogen (H2) generation. This strategy is possible to become a reality only if innovations in materials, chemistry, catalysis, and other engineering related fields are to occur. From a materials science perspective, extensive research is currently underway to develop materials able to store H2, to capture CO2, or to separate H2 from byproducts such as CO2, CO, or N2. This work aims to explore the opportunities, as well as the associated limitations of the use of silicon oxycarbonitride ceramics derived from preceramic polymers by NH3-assisted route for the above-mentioned applications, such as H2 gas separation membranes, and H2 or CO2 capture or storage materials in form of powders. A simple and general synthesis method to tune the chemical composition and pore size, as well as the surface area of oxycarbonitride ceramics has been developed. This method is based on modifying the structure of preceramic polymers through chemical reactions with NH3 at 300 – 800 oC, followed by a thermolysis under an Ar atmosphere at 750 oC. Under these synthesis conditions a polysiloxane and a polysilazane transform to microporous ceramics, while materials derived from a polycarbosilane remain nonporous, as revealed by N2 and CO2 adsorption isotherms. Small angle X-ray scattering (SAXS) characterization indicates that samples prepared from the polycarbosilane possess latent pores (pore size

Download or read book Synthesis and Characterization of Rationally Designed Porous Materials for Energy Storage and Carbon Capture written by Julian Patrick Sculley and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the hottest areas in porous materials research in the last decade have been in energy storage, mainly hydrogen and methane, and in carbon capture and sequestration (CCS). Although these topics are intricately linked in terms of our future energy landscape, the specific materials needed to solve these problems must have significantly different properties. High pressure gas storage is most often linked with high surface areas and pore volumes, while carbon capture sorbents require high sorption enthalpies to achieve the needed selectivity. The latter typically involves separating CO2 from mixed gas streams of mostly nitrogen via a temperature swing adsorption (TSA) process. Much of the excitement has arisen because of the potential of metal-organic frameworks (MOFs) and porous polymer networks (PPNs). Both classes of materials have extremely high surface areas (upwards of 4000 m2/g) and can be modified to have specific physical properties, thus enabling high performance materials for targeted applications. This dissertation focuses on the synthesis and characterization of these novel materials for both applications by tuning framework topologies, composition, and surface properties. Specifically, two routes to synthesize a single molecule trap (SMT) highlight the flexibility of MOF design and ability to tune a framework to interact with specifically one guest molecule; computational and experimental evidence of the binding mechanism are shown as well. Furthermore, eight PPNs are synthesized and characterized for post-combustion carbon capture and direct air capture applications. In addition a high-throughput model, grounded in thermodynamics, to calculate the energy penalty associated with the carbon capture step is presented in order to evaluate all materials for TSA applications provide a comparison to the state of the art capture technologies. This includes results of working capacity and energy calculations to determine parasitic loads (per ton of CO2 captured) from readily available experimental data of any material (adsorption isotherms and heat capacities) using a few simple equations. Through various systematic investigations, trends are analyzed to form structure property relationships that will aid future material development. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149368

Download or read book Porous Polymer Networks written by Vikas Mittal and published by . This book was released on 2019-01-31 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main aim of the book is to assimilate the fundamental know how about the synthesis, properties as well as applications of a large range of recently developed and commercially viable porous polymer networks.

Download or read book Heteroatom doped Nanoporous Carbons written by Babak Ashourirad and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Activated carbons as emerging classes of porous materials have gained tremendous attention because of their versatile applications such as gas storage/separations sorbents, oxygen reduction reaction (ORR) catalysts and supercapacitor electrodes. This diversity originates from fascinating features such as low-cost, lightweight, thermal, chemical and physical stability as well as adjustable textural properties. More interestingly, sole heteroatom or combinations of various elements can be doped into their framework to modify the surface chemistry. Among all dopants, nitrogen as the most frequently used element, induces basicity and charge delocalization into the carbon network and enhances selective adsorption of CO2. Transformation of a task-specific and single source precursor to heteroatom-doped carbon through a one-step activation process is considered a novel and efficient strategy. With these considerations in mind, we developed multiple series of heteroatom doped porous carbons by using nitrogen containing carbon precursors. Benzimidazole-linked polymers (BILP-5), benzimidazole monomer (BI) and azo-linked polymers (ALP-6) were successfully transformed into heteroatom-doped carbons through chemical activation by potassium hydroxide. Alternative activation by zinc chloride and direct heating was also applied to ALP-6. The controlled activation/carbonization process afforded diverse textural properties, adjustable heteroatom doping levels and remarkable gas sorption properties. Nitrogen isotherms at 77 K revealed that micropores dominate the porous structure of carbons. The highest Brunauer-Emett-Teller (BET) surface area (4171 m2g−1) and pore volume (2.3 cm3g−1) were obtained for carbon synthesized by KOH activation of BI at 700°C. In light of the synergistic effect of basic heteroatoms and fine micropores, all carbons exhibit remarkable gas capture and selectivity. Particularly, BI and BIPL-5 derived carbons feature unprecedented CO2 uptakes of 6.2 mmol g−1 (1 bar) and 2.1 mmol g−1 (0.15 bar) at 298 K, respectively. The ALP-6 derived carbons retained considerable amount of nitrogen dopants (up to 14.4 wt%) after heat treatment owing to the presence of more stable nitrogen-nitrogen bonds compared to nitrogen-carbon bonds in BILP-5 and BI precursors. Subsequently, the highest selectivity of 62 for CO2/N2 and 11 for CO2/CH4 were obtained at 298 K for a carbon prepared by KOH activation of ALP-6 at 500°C.

Download or read book Small Angle X ray Scattering written by O. Glatter and published by . This book was released on 1982 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Porous Carbons written by Feiyu Kang and published by Elsevier. This book was released on 2021-11-04 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon materials form pores ranging in size and morphology, from micropores of less than 1nm, to macropores of more than 50nm, and from channel-like spaces with homogenous diameters in carbon nanotubes, to round spaces in various fullerene cages, including irregularly-shaped pores in polycrystalline carbon materials. The large quantity and rapid rate of absorption of various molecules made possible by these attributes of carbon materials are now used in the storage of foreign atoms and ions for energy storage, conversion and adsorption, and for environmental remediation. Porous Carbons: Syntheses and Applications focuses on the fabrication and application of porous carbons. It considers fabrication at three scales: micropores, mesopores, and macropores. Carbon foams, sponges, and 3D-structured carbons are detailed. The title presents applications in four key areas: energy storage, energy conversion, energy adsorption, including batteries, supercapacitors, and fuel cells and environmental remediation, emphasizing the importance of pore structures at the three scales, and the diffusion and storage of various ions and molecules. The book presents a short history of each technique and material, and assesses advantages and disadvantages. This focused book provides researchers with a comprehensive understanding of both pioneering and current synthesis techniques for porous carbons, and their modern applications. Presents modern porous carbon synthesis techniques and modern applications of porous carbons Presents current research on porous carbons in energy storage, conversion and adsorption, and in environmental remediation Provides a history and assessment of both pioneering and current cutting-edge synthesis techniques and materials Covers a significant range of precursor materials, preparation techniques, and characteristics Considers the future development of porous carbons and their various potential applications

Download or read book Char and Carbon Materials Derived from Biomass written by Mejdi Jeguirim and published by Elsevier. This book was released on 2019-03-29 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Char and Carbon Materials Derived from Biomass: Production, Characterization and Applications provides an overview of biomass char production methods (pyrolysis, hydrothermal carbonization, etc.), along with the characterization techniques typically used (Scanning Electronic Microscopy, X-Ray Fluorescence, Nitrogen adsorption, etc.) In addition, the book includes a discussion of the various properties of biomass chars and their suitable recovery processes, concluding with a demonstration of applications. As biomass can be converted to energy, biofuels and bioproducts via thermochemical conversion processes, such as combustion, pyrolysis and gasification, this book is ideal for professionals in energy production and storage fields, as well as professionals in waste treatment, gas treatment, and more. Provides a discussion of sources of biomass feedstocks, such as agricultural, woody plants and food processing residue Discusses the various production processes of biomass chars, including pyrolysis and hydrothermal carbonization Explores various applications of biomass chars within different industries, including energy and agronomy

Download or read book Organic and Carbon Gels written by Ana Arenillas and published by Springer. This book was released on 2019-05-08 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This expert volume provides specialized coverage of the current state of the art in carbon gels. Carbon gels represent a promising class of materials with high added value applications and many assets, like the ability to accurately tailor their structure, porosity, and surface composition and easily dope them with numerous species. The ability to obtain them in custom shapes, such as powder, beads, monoliths, or impregnated scaffolds opens the way towards numerous applications, including catalysis, adsorption, and electrochemical energy storage, among others. Nevertheless, it remains a crucial question as to which design synthesis and manufacturing processes are viable from an economic and environmental point of view. The book represents the perspectives of renowned specialists in the field, specially invited to conduct a one-day workshop devoted to carbon gels as part of the 19th International Sol-Gel Conference, SOL-GEL 2017, held on September 3rd, 2017 in Liège, Belgium. Addressing properties and synthesis through applications and industry outlook, this book represents essential reading for advanced graduate students through practicing researchers interested in these exciting materials.

Download or read book Biomass Chars Elaboration Characterization and Applications written by Mejdi Jeguirim and published by MDPI. This book was released on 2018-04-03 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Biomass Chars: Elaboration, Characterization and Applications" that was published in Energies

Download or read book Synthesis Characterization of Novel Porous Carbon Materials and Their Application in CO2 Capture written by Xiaotian Zhang and published by . This book was released on 2015 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research is aimed at developing novel, porous activated carbon materials that are used for CO2 capture. The research is mainly composed of two parts: synthesis, characterization of novel porous carbons produced via KOH activation; and evaluation of their preliminary CO2 capture performances. Various kinds of porous carbons were synthesized via KOH activation method. Through activation of multi-wall carbon nanotubes, the mechanism of pore formation was proposed. This understanding of the pore-forming mechanism also provides a good platform to investigate the effect of absorbent's pore structures on its CO2 capture behavior. This study demonstrated the significant role of pore sizes less than 1 nm in the physisorption of CO2 molecules. Furthermore, activated carbons with ultrahigh surface area were synthesized by KOH activation of polyaniline. By studying the effect of the preheating stage, it was determined that formation of network-like nanostructure at preheating stage of the activation process is beneficial to the pore development and can lead to activated carbons with exceptionally high surface area. It is believed that this mechanism could be applied to the activation of other carbon precursors in order to achieve improved specific surface area (SSA) and micropore volume. The evaluation of the CO2 capture performances were conducted for two novel activated carbons: porous carbons derived from a liquid carbon precursor (polyethylenimine), and LiCl-incorporated activated carbons. For the porous carbons derived from polyethylenimine, they possess microporosity and rich nitrogen content. At 1 bar the CO2 uptake of the carbons was 4.9-5.7 mmol g-1 at 0 oC. These carbons also demonstrated a selectivity of 33 for CO2 over N2 at 25 oC and less than 1% decrease of the performance after 30 cycles. For LiCl-incorporated porous carbons, the CO2 adsorption capacity decreased after LiCl incorporation, mainly because of blocking of the small micropores. However, the increase of initial Qst after LiCl incorporation indicated a positive role of LiCl in terms of CO2 interaction with sorbent surfaces.

Download or read book Frontiers in Chemistry Rising Stars 2022 written by Yunping Qiu and published by Frontiers Media SA. This book was released on 2024-02-01 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are delighted to present the 2022 Edition of our Frontiers in Chemistry “Rising Stars” article collection. This collection showcases the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers were individually nominated by our Guest Editors and Chief Editors in recognition of their potential to influence the future directions in their respective fields. This year, we have selected Guest Editors who were featured as our Rising Stars in our previous collection together with Editorial Board members. The work presented here highlights the diversity of research performed across the entire breadth of chemical science and presents advances in theory, experiment and methodology with applications to compelling problems.

Download or read book Metal Organic Framework Materials written by Leonard R. MacGillivray and published by John Wiley & Sons. This book was released on 2014-09-19 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Frameworks (MOFs) are crystalline compounds consisting of rigid organic molecules held together and organized by metal ions or clusters. Special interests in these materials arise from the fact that many are highly porous and can be used for storage of small molecules, for example H2 or CO2. Consequently, the materials are ideal candidates for a wide range of applications including gas storage, separation technologies and catalysis. Potential applications include the storage of hydrogen for fuel-cell cars, and the removal and storage of carbon dioxide in sustainable technical processes. MOFs offer the inorganic chemist and materials scientist a wide range of new synthetic possibilities and open the doors to new and exciting basic research. Metal-Organic Frameworks Materials provides a solid basis for the understanding of MOFs and insights into new inorganic materials structures and properties. The volume also reflects progress that has been made in recent years, presenting a wide range of new applications including state-of-the art developments in the promising technology for alternative fuels. The comprehensive volume investigates structures, symmetry, supramolecular chemistry, surface engineering, recognition, properties, and reactions. The content from this book will be added online to the Encyclopedia of Inorganic and Bioinorganic Chemistry: http://www.wileyonlinelibrary.com/ref/eibc

Download or read book Polymeric Adsorbents written by Ahad Ghaemi and published by Elsevier. This book was released on 2023-09-22 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Adsorbents: Characterization, Properties, Applications, and Modelling offers comprehensive information on the various types of polymeric adsorbents and uses, enabling the reader to understand, identify and prepare adsorbents with the required structure and properties for a range of key industrial applications. The book presents the various types of polymeric adsorbents and their characteristics, focuses on physicochemical properties, synthesis methods, functionalization, and composites and hybrid materials, and highlights key application areas, including gas adsorption, heavy metal removal, hazardous dye removal, and adsorption of antibiotics. Finally, the book provides detailed guidance on modeling of polymeric adsorbent behavior and molecular dynamic (MD) simulation. This is a valuable resource to researchers and advanced students across polymer science, chemistry, materials science, engineering, environmental science, and engineers, scientists, and R&D professionals with an interest in polymeric adsorbents for industrial applications. Covers a full range of polymeric adsorbent types, as well as composites and hybrid adsorbents Explains chemistry, characterization, functionalization and methods for improving properties Explores a range of applications supported by detailed coverage of simulation and modeling

Download or read book Synthesis and Characterization of CMK Porous Carbons Modified with Metals Applied to Hydrogen Uptake and Storage written by Marcos B. Gómez and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, we have shown that hopeful hydrogen storage material can be obtained by ordered mesoporous carbons (carbons mesostructured from Korea, CMK-1 and CMK-3) and modified with metal/cations species. The pristine CMK-1 and CMK-3 were synthesized by replication using MCM-48 and SBA-15 as hard templates and sucrose as a carbon source. Incorporation of metal species was carried out by wetness impregnation. The mesoporous materials modified were characterized by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), RAMAN, transmission electron microscopy (TEM), and adsorption/desorption N2 isotherms. Carbon modified with metal/cations shows a better capacity for hydrogen uptake than that of the mesoporous carbons. The evolution of high-pressure hydrogen adsorption measured at 77 K shows that composites can significantly enhance hydrogen adsorption capacity and hydrogen storage performance of carbon materials, proving to be prospective candidates for application in hydrogen storage. The improved activity and the larger performance of composite materials are attributed to improved dispersion of uniform metal/cations nanoparticles as well as to efficient use of the support, which may originate a high-surface area and pore volume, allowing a large dispersion of clusters.