Homogeneous Hydrogenation of Carbon Dioxide

Jessop, Philip G.

doi:10.1002/9783527619382.ch17

Cited by 51 publications

(59 citation statements)

References 89 publications

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“…The B À O bond is much stable, and breaking it to make a B À H bond is a difficult operation, requiring a particular chemistry. One could compare this situation to the economically unfavorable conversion of C À O in CO 2 into C À H in CH 4 [58]. À700 and +250 kJ mol À1 , respectively, implying thus an endothermic recycling reaction [57].…”

Section: Regenerabilitymentioning

confidence: 99%

Boron-based hydrides for chemical hydrogen storage

Moussa

Moury

Demirci

et al. 2013

Int. J. Energy Res.

138

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SUMMARY The development of the hydrogen economy is hampered by many issues connected with production, storage, distribution, and end‐use. Although the hydrogen storage problem is particularly difficult, there are several attractive solutions under investigation, and chemical hydrogen storage (involving hydrogen‐rich materials) has shown much promising properties. The boron‐based materials are typical examples. They have high hydrogen densities, with up to four reactive B − H bonds. Most of the works have focused on dehydrogenation by hydrolysis or thermolysis so that it takes place in high extent in mild conditions. The first materials studied have been lithium borohydride, sodium borohydride, and ammonia borane. However, their development has been hindered by technical issues such as very high dehydrogenation temperatures, incomplete reaction, and purity of the produced hydrogen. To get round such problems, new materials have been proposed since the mid‐2000s. Interestingly, those materials present attractive attributes, but also drawbacks. This is illustrated in the present review. We believe that boron‐based hydrides have a significant potential in chemical hydrogen storage, but their implementation depends on the recyclability of the solid by‐products; this seems to be the key factor. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Regenerabilitymentioning

confidence: 99%

Boron-based hydrides for chemical hydrogen storage

Moussa

Moury

Demirci

et al. 2013

Int. J. Energy Res.

138

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“…For several reasons, homogeneous hydrogenation of carbon dioxide has long been studied and efficient procedures have been developed. [8][9][10] Reductions of olefins, aldehydes, ketones and imines are often accomplished by catalytic hydrogen transfer from formic acid or its derivatives. [11,12] Direct decomposition of formic acid has been observed in many cases but was considered only an unwanted side reac-tion.…”

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confidence: 99%

Breakthroughs in Hydrogen Storage—Formic Acid as a Sustainable Storage Material for Hydrogen

2008

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“…Homogenous catalytic systems typically have higher catalytic activity than heterogeneous catalysts. Valuable chemicals including the production of carbonates, carbamates, urethanes, lactones, pyrones, and formic acid and its derivatives can be synthesized using homogeneous catalysts.…”

Section: Introductionmentioning

confidence: 99%

Use of carbon dioxide as feedstock for chemicals and fuels: homogeneous and heterogeneous catalysis

Dibenedetto

Angelini

Stufano

2013

J of Chemical Tech & Biotech

189

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CO2 is considered to play a key role in an eventual climate change, due to its accumulation in the atmosphere. The control of its emission represents a challenging task that requires new ideas and new technologies. The use of perennial energy sources and renewable fuels instead of fossil fuels and the conversion of CO2 into useful products are receiving increased attention. The utilization of CO2 as a raw material for the synthesis of chemicals and fuels is an area in which scientists and industrialists are much involved: the implementation of such technology on a large scale would allow a change from a linear use of fossil carbon to its cyclic use, mimicking Nature. In this paper the use of CO2 as building block is discussed. CO2 can replace toxic species such as phosgene in low energy processes, or can be used as source of carbon for the synthesis of energy products. The reactions with dihydrogen, alcohols, epoxides, amines, olefins, dienes, and other unsaturated hydrocarbons are discussed, under various reaction conditions, using metal systems or enzymes as catalysts. The formation of products such as formic acid and its esters, formamides, methanol, dimethyl carbonate, alkylene carbonates, carbamic acid esters, lactones, carboxylic acids, and polycarbonates, is described. The factors that have limited so far the conversion of large volumes of CO2 are analyzed and options for large‐scale CO2 catalytic conversion into chemicals and fuels are discussed. Both homogeneous and heterogeneous catalysts are considered and the pros and cons of their use highlighted. © 2013 Society of Chemical Industry

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Homogeneous Hydrogenation of Carbon Dioxide

Cited by 51 publications

References 89 publications

Boron-based hydrides for chemical hydrogen storage

Boron-based hydrides for chemical hydrogen storage

Breakthroughs in Hydrogen Storage—Formic Acid as a Sustainable Storage Material for Hydrogen

Use of carbon dioxide as feedstock for chemicals and fuels: homogeneous and heterogeneous catalysis

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