Modeling of Chemical Equilibrium and Gas Phase Behavior for the Direct Synthesis of Dimethyl Carbonate from CO2and Methanol

2012 ◽  
Vol 51 (26) ◽  
pp. 8945-8956 ◽  
Author(s):  
Felipe Bustamante ◽  
Andrés F. Orrego ◽  
Sebastián Villegas ◽  
Aída L. Villa
Keyword(s):  
Phase Behavior ◽  
Gas Phase ◽  
Chemical Equilibrium ◽  
Dimethyl Carbonate ◽  
Direct Synthesis

scholarly journals Gas phase synthesis of dimethyl carbonate from CO2 and CH3OH over Cu-Ni/AC. A kinetic study

2019 ◽  
pp. 88-99 ◽  
Author(s):  
Oscar Felipe Arbeláez-Pérez ◽  
Sara Dominguez Cardozo ◽  
Andrés Felipe Orrego-Romero ◽  
Aida Luz Villa Holguin ◽  
Felipe Bustamante Londoño
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Activated Carbon ◽  
Gas Phase ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Dispersion Analysis ◽  
Molar Ratio ◽  
Rate Determining Step ◽  
Carbonate Formation

The catalytic activity for dimethyl carbonate formation from carbon dioxide and methanol over mono and bimetallic Cu:Ni supported on activated carbon is presented. Bimetallic catalysts exhibit higher catalytic activity than the monometallic samples, being Cu:Ni-2:1 (molar ratio) the best catalyst; X-Ray diffraction, transmission electron microscopy, and metal dispersion analysis provided insight into the improved activity. In situ FT-IR experiments were conducted to investigate the mechanism of formation of dimethyl carbonate from methanol and carbon dioxide over Cu-Ni:2-1. The kinetics of the direct synthesis of dimethyl carbonate in gas phase over Cu:Ni-2:1 supported on activated carbon catalyst was experimentally investigated at 12 bar and temperatures between 90 oC and 130 oC, varying the partial pressures of CO2 and methanol. Experimental kinetic data were consistent with a Langmuir–Hinshelwood model that included carbon dioxide and methanol adsorption on catalyst actives sites (Cu, Ni and Cu-Ni), and the reaction of adsorbed CO2 with methoxi species as the rate determining step. The estimated apparent activation energy was 94.2 kJ mol-1.

Modeling of physical and chemical equilibrium for the direct synthesis of dimethyl carbonate at high pressure conditions

2012 ◽  
Vol 336 ◽  
pp. 41-51 ◽  
Author(s):  
B.A.V. Santos ◽  
V.M.T.M. Silva ◽  
J.M. Loureiro ◽  
D. Barbosa ◽  
A.E. Rodrigues
Keyword(s):  
High Pressure ◽  
Chemical Equilibrium ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Physical And Chemical

Experimental determination and modeling of the phase behavior for the direct synthesis of dimethyl carbonate from methanol and carbon dioxide

2013 ◽  
Vol 84 ◽  
pp. 155-163 ◽  
Author(s):  
Ioannis Tsivintzelis ◽  
Nikolai E. Musko ◽  
Alfons Baiker ◽  
Jan-Dierk Grunwaldt ◽  
Georgios M. Kontogeorgis
Keyword(s):  
Carbon Dioxide ◽  
Phase Behavior ◽  
Experimental Determination ◽  
Dimethyl Carbonate ◽  
Direct Synthesis

Gas-phase behavior of noncovalent transmembrane segment complexes

2008 ◽  
Vol 22 (24) ◽  
pp. 4089-4097 ◽  
Author(s):  
Linda M. M. Weigang ◽  
Dieter Langosch ◽  
Thomas Letzel
Keyword(s):  
Phase Behavior ◽  
Gas Phase ◽  
Transmembrane Segment

scholarly journals Liquid-gas phase behavior of Stockmayer fluid with high dipolar moment

2007 ◽  
Vol 10 (4) ◽  
pp. 553 ◽  
Author(s):  
Kalyuzhnyi ◽  
Protsykevitch ◽  
Cummings
Keyword(s):  
Phase Behavior ◽  
Gas Phase ◽  
Dipolar Moment
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