Download or read book Transition metal free Reduction of Carbon Dioxide written by Marc-André Courtemanche and published by . This book was released on 2015 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Only nine years have passed since the seminal discovery that Frustrated Lewis Pairs (FLPs) could split dihydrogen and yet, more than a thousand research papers have already been published on the subject. As the work presented herein commenced, metal-free systems capable of catalytically transforming CO2 could be counted on a single hand while transition-metal based systems were almost as scarce. As such, the present thesis deals with the development of novel transition-metal-free systems for the catalytic reduction of CO2 to energy rich materials, most notably methanol. Firstly, the preparation of a new FLP system bearing three pendant phosphine groups Al(C6H4(o-PPh2))3 and its ability to activate carbon dioxide in a reversible fashion are presented. In the presence of catecholborane, CO2 is catalytically reduced to methoxyboranes, species which are readily hydrolyzed to methanol. Interestingly, a decomposition product is shown to be responsible for the catalytic activity Indeed, species 1-Bcat-2-PPh2-C6H4 is the first report of a catalyst for the metal-free hydroboration of carbon dioxide. The activity of this excessively simple catalyst surpasses that of the best transition metal systems while using the cheap and high hydrogen content borane BH3.SMe2. In-depth mechanistic studies reveals that simultaneous activation of both the borane and CO2 molecules is of critical importance. Further investigation reveals that the formation of an adduct between the catalyst and formaldehyde affords an even more potent organocatalyst. It is also shown that phosphazene superbases are very active organocatalysts for the transformation of CO2 to either formate or methanol derivatives. Unexpectedly, N,N-dimethylformamide (DMF) can promote the reductive hydrosilylation of CO2 in the absence of any catalyst. Finally, the challenging task of developing a metal-free system for the hydrogenation of CO2 was undertaken. A novel strategy was developed by studying the fundamental aspects of FLP mediated hydrogenations, allowing us to achieve CO2 reduction under ambient conditions. While an unexpected decomposition pathway hampered catalysis, optimisation of the catalyst design is expected to yield the first metal-free catalyst for the hydrogenation of CO2.

Download or read book Reduction of Carbon Dioxide by Dihydrogen and Related Reactions Catalyzed by Transition Metal Complexes written by James Y. Yu and published by . This book was released on 1992 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Dioxide Chemistry Capture and Oil Recovery written by Iyad Karamé and published by BoD – Books on Demand. This book was released on 2018-08-16 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fossil fuels still need to meet the growing demand of global economic development, yet they are often considered as one of the main sources of the CO2 release in the atmosphere. CO2, which is the primary greenhouse gas (GHG), is periodically exchanged among the land surface, ocean, and atmosphere where various creatures absorb and produce it daily. However, the balanced processes of producing and consuming the CO2 by nature are unfortunately faced by the anthropogenic release of CO2. Decreasing the emissions of these greenhouse gases is becoming more urgent. Therefore, carbon sequestration and storage (CSS) of CO2, its utilization in oil recovery, as well as its conversion into fuels and chemicals emerge as active options and potential strategies to mitigate CO2 emissions and climate change, energy crises, and challenges in the storage of energy.

Download or read book Reduction of Carbon Dioxide by Dihydrogen and Other Catalytic Reactions in the Presence of Transition Metal Complexes in Solution written by Phillip Brook Kaufman and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earth abundant Transition Metal Complexes for Catalytic Proton and Carbon Dioxide Reduction written by Van Sara Thoi and published by . This book was released on 2013 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrochemical Carbon Dioxide Reduction written by Samuel C. Perry and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-08-23 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide reduction is a key research challenge in the global mission to reduce CO2 emissions. The process presents a unique challenge in that it can produce several different products, presenting the user with the challenge of selectively and efficiently producing on single useful material. This book presents an introduction to the field, covering the chemical reactions involved, the range of innovative materials and reactor designs most recently developed, and the future targets that need to be met.

Download or read book Catalytic Reduction of Carbon Dioxide by Dihydrogen in the Presence of Transition Metal Complexes written by Serge Schreiner and published by . This book was released on 1990 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalysis of the Cathodic Reduction of Carbon Dioxide by Transition Metal Complexes written by D. J. Pearce and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Utilization of Carbon Dioxide written by Mohammad Jawaid and published by Springer Nature. This book was released on 2023-07-08 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the latest technology and experimental scientific advancements in converting carbon dioxide (CO2) from waste to useful commercial products. This approach helps to mitigate climate change due to carbon emission greenhouse effect and also create a circular economy through CO2 waste capture and utilization to produce CO2 derived products. This provides new direction for government organizations, manufacturing industries (fuel, chemicals, building materials) and investment firms to work towards a zero carbon future. This book caters to researchers, policymakers, industrial practitioners who are interested in more sustainable practices in carbon dioxide technology.

Download or read book Transformation of Carbon Dioxide to Formic Acid and Methanol written by Wan-Hui Wang and published by Springer. This book was released on 2017-10-26 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brief explains the principles and fundamentals of carbon dioxide utilization and highlights the transformation to fuels and value-added chemicals such as formic acid and methanol. It is divided into six chapters, including an introduction to the basics of CO2 utilization and transformation of CO2 to formic acid and methanol with homogeneous and heterogeneous catalysts, respectively. The brief will appeal to a wide readership of academic and industrial researchers focusing on homogeneous and heterogeneous catalysis, organometallic chemistry, green chemistry, energy conversion and storage.

Download or read book Electrocatalytic Carbon Dioxide Reduction by Transition Metal Polypyridal Complexes written by Brian Patrick Sullivan and published by . This book was released on 1987 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO2 Conversion and Utilization written by Chunshan Song and published by ACS Symposium. This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the chemistry and processes for conversion and utilization of carbon dioxide. Topics include CO 2 utilization, its conversion to industrial chemicals and fuels, its coversion via synthesis gas, and new catalysts and chemical processes for conversion.

Download or read book Transition metal free catalytic systems for the utilization of CO2 to achieve valuable chemicals written by Daniel Riemer and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of one of the most threatening greenhouse gases regarding the climate change could help changing its reputation from a harmful waste toward a green alternative feedstock. For the afore-mentioned reason, it would be thus highly interesting to generate valuable fine chemicals and pharmaceutically active drug molecules or their respective intermediates via mild reaction pathways regarding energy consumption and safe reaction procedures and through replacing toxic and harmful reactants by CO2. Thus, four main reactions were envisioned for this thesis with the aim laid on mild re...

Download or read book Electrocatalytic Reduction of Carbon Dioxide with Group 6 7 and 8 Transition Metal Diimine Complexes written by Joanne Tory and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Dioxide and Organometallics written by Xiao-Bing Lu and published by Springer. This book was released on 2015-08-26 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics of pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors. All chapters from Topics in Organometallic Chemistry are published OnlineFirst with an individual DOI. In references, Topics in Organometallic Chemistry is abbreviated as Top Organomet Chem and cited as a journal

Download or read book Carbon Dioxide as Chemical Feedstock written by Michele Aresta and published by John Wiley & Sons. This book was released on 2010-01-26 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the need for an up-to-date handbook, this ready reference closely investigates the use of CO2 for ureas, enzymes, carbamates, and isocyanates, as well as its use as a solvent, in electrochemistry, biomass utilization and much more. Edited by an internationally renowned and experienced researcher, this is a comprehensive source for every synthetic chemist in academia and industry.

Download or read book Electrochemical Reduction of Carbon Dioxide on Transition Metal Surfaces written by Kendra Kuhl and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemical carbon dioxide reduction reaction (CO2RR) is a promising way to store energy from intermittent electricity sources (ie. wind and solar) and for the synthesis of carbon-based compounds that are currently derived from fossil fuels. To commercialize this process, catalysts that selectively reduce CO2 at low overpotential are needed. Research in this area is hindered by the experimental difficulty of comparing catalyst activity. This thesis begins with the development of a custom electrolysis cell that can be coupled to product detection with NMR and GC. This method allows for accurate voltage measurement and the quantification of all possible products to give the most complete characterization of CO2RR activity available to date. The CO2RR activity of Cu metal is well-studied, but application of this more sensitive experimental method lead to the identification of five novel products: glyoxal, glycolaldehyde, ethylene glycol, hydroxyacetone, and acetone. The CO2RR product identities and their potential dependence inspired the hypothesis that the enol and diol forms of the products may be the active intermediate species on the electrode surface. CO is believed to be an intermediate of CO2RR to methane and ethylene and the direct electrochemical reduction of CO confirmed that it is also a possible intermediate in the formation of many of the novel products observed as well. After Cu, the activity of Au, Ag, Zn, Ni, Pt, and Fe for CO2RR was also measured using the same experimental method. This represents the most complete dataset of transition metal activity available and reveals several important trends. A plot of CO2RR activity vs. CO binding energy places Au at the top of the volcano, suggesting that it has a near optimal binding energy for CO (and other intermediates) within the pure metals. A strong CO binding energy is also correlated with an early onset potential for HER and methane/methanol formation. The widespread use of CO2RR will require a catalyst with higher activity than any of the pure metals. Efforts to improve activity began by alloying Fe and Ni, which are poor overall CO2RR catalysts individually, but do produce hydrocarbon products. Alloying decreased the overpotential of needed for methane formation, demonstrating that alloying is a promising method of catalyst improvement.