scholarly journals Chemical Reactions in the Medium Density Fluid. Anomaly in the Volume Profile of the Dimerization Reaction of 2-Methyl-2-nitrosopropane in Carbon Dioxide

1987 ◽  
Vol 16 (4) ◽  
pp. 617-620 ◽  
Author(s):  
Yoshifumi Kimura ◽  
Yosuke Yoshimura ◽  
Masaru Nakahara
Keyword(s):  
Carbon Dioxide ◽  
Chemical Reactions ◽  
Medium Density ◽  
Volume Profile ◽  
Dimerization Reaction

scholarly journals New means of hydrogen storage – the potentials of methanol as energy storage for excessive windpower in North Germany

2018 ◽  
Vol 70 ◽  
pp. 01004
Author(s):  
Johannes Gulden ◽  
Andreas Sklarow ◽  
Thomas Luschtinetz
Keyword(s):  
Carbon Dioxide ◽  
Energy Storage ◽  
Solar Energy ◽  
Hydrogen Storage ◽  
Chemical Reactions ◽  
Energy Production ◽  
Technological Development ◽  
Mild Conditions ◽  
Production And Consumption ◽  
North Germany

The aim of the presented project is the technological development of hydrogen storage in methanol. This technology enables the carbon dioxide-based chemical storage of renewable energies as well as a decentralized supply of energy and hydrogen. Additional advantages are the very good compatibility with the existing infrastructure for liquid energy storage as well as the temporal decoupling of energy production and consumption. The latter can be managed independently, thus taking into account the fluctuating nature of wind and solar energy. The centrepiece is the use of new catalysts and processes that enable the chemical reactions in the methanol cycle under mild conditions.

On the chemical reactions of carbon dioxide isoelectronic molecules CS2 and OCS with 1-butyl-3-methylimidazolium acetate

2013 ◽  
Vol 49 (94) ◽  
pp. 11083 ◽  
Author(s):  
M. Isabel Cabaço ◽  
Marcel Besnard ◽  
Fabián Vaca Chávez ◽  
Noël Pinaud ◽  
Pedro J. Sebastião ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Chemical Reactions ◽  
Isoelectronic Molecules

Integrating Catalytic Coal Gasifiers With Solid Oxide Fuel Cells

2010 ◽  
Author(s):  
Nicholas Siefert ◽  
Dushyant Shekhawat ◽  
Thomas Kalapos
Keyword(s):  
Carbon Dioxide ◽  
Fuel Cells ◽  
High Temperature ◽  
Solid Oxide Fuel Cells ◽  
Chemical Reactions ◽  
Steam Gasification ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Entrained Flow ◽  
Coal Gasifier

A review was conducted for coal gasification technologies that integrate with solid oxide fuel cells (SOFC) to achieve system efficiencies near 60% while capturing and sequestering >90% of the carbon dioxide [1–2]. The overall system efficiency can reach 60% when a) the coal gasifier produces a syngas with a methane composition of roughly 25% on a dry volume basis, b) the carbon dioxide is separated from the methane-rich synthesis gas, c) the methane-rich syngas is sent to a SOFC, and d) the off-gases from the SOFC are recycled back to coal gasifier. The thermodynamics of this process will be reviewed and compared to conventional processes in order to highlight where available work (i.e. exergy) is lost in entrained-flow, high-temperature gasification, and where exergy is lost in hydrogen oxidation within the SOFC. The main advantage of steam gasification of coal to methane and carbon dioxide is that the amount of exergy consumed in the gasifier is small compared to conventional, high-temperature, oxygen-blown gasifiers. However, the goal of limiting the amount of exergy destruction in the gasifier has the effect of limiting the rates of chemical reactions. Thus, one of the main advantages of steam gasification leads to one of its main problems: slow reaction kinetics. While conventional entrained-flow, high-temperature gasifiers consume a sizable portion of the available work in the coal oxidation, the consumed exergy speeds up the rates of reactions. And while the rates of steam gasification reactions can be increased through the use of catalysts, only a few catalysts can meet cost requirements because there is often significant deactivation due to chemical reactions between the inorganic species in the coal and the catalyst. Previous research into increasing the kinetics of steam gasification will be reviewed. The goal of this paper is to highlight both the challenges and advantages of integrating catalytic coal gasifiers with SOFCs.

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