Effect of acid–base properties of H3PW12O40/CexTi1−xO2 catalysts on the direct synthesis of dimethyl carbonate from methanol and carbon dioxide: A TPD study of H3PW12O40/CexTi1−xO2 catalysts

2007 ◽  
Vol 269 (1-2) ◽  
pp. 41-45 ◽  
Author(s):  
Kyung Won La ◽  
Ji Chul Jung ◽  
Heesoo Kim ◽  
Sung-Hyeon Baeck ◽  
In Kyu Song
Keyword(s):  
Carbon Dioxide ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Acid Base ◽  
Base Properties

Direct synthesis of dimethyl carbonate from CO2 and methanol over CaO–CeO2 catalysts: the role of acid–base properties and surface oxygen vacancies

2017 ◽  
Vol 41 (20) ◽  
pp. 12231-12240 ◽  
Author(s):  
Bin Liu ◽  
Congming Li ◽  
Guoqiang Zhang ◽  
Lifei Yan ◽  
Zhong Li
Keyword(s):  
Oxygen Vacancies ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Surface Oxygen ◽  
Acid Base ◽  
Base Properties

The addition of CaO to the CeO2 catalyst had a significant impact on the acid–base properties and amounts of oxygen vacancies on the surface catalyst.

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.

Direct Synthesis of Dimethyl Carbonate from Methanol and Carbon Dioxide Over CeO2(X)–ZnO(1−X) Nano-Catalysts

2013 ◽  
Vol 13 (12) ◽  
pp. 8116-8120 ◽  
Author(s):  
Ki Hyuk Kang ◽  
Wangrae Joe ◽  
Chang Hoon Lee ◽  
Mieock Kim ◽  
Dong Baek Kim ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Nano Catalysts

Cu-Ni/V2O5-SiO2 Catalyst for the Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol

2000 ◽  
Vol 16 (03) ◽  
pp. 226-231 ◽  
Author(s):  
Zhong Shun-He ◽  
◽  
Li Han-Sehng ◽  
Wang Jian-Wei ◽  
Xiao Xiu-Fen
Keyword(s):  
Carbon Dioxide ◽  
Dimethyl Carbonate ◽  
Direct Synthesis
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