Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol at Room Temperature Using Imidazolium Hydrogen Carbonate Ionic Liquid as a Recyclable Catalyst and Dehydrant

ChemSusChem ◽  
2017 ◽  
Vol 10 (9) ◽  
pp. 2046-2052 ◽  
Author(s):  
Tianxiang Zhao ◽  
Xingbang Hu ◽  
Dongsheng Wu ◽  
Rui Li ◽  
Guoqiang Yang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Room Temperature ◽  
Dimethyl Carbonate ◽  
Direct Synthesis ◽  
Recyclable Catalyst ◽  
Hydrogen Carbonate

scholarly journals Oxidative Carbonylation of Methanol to Dimethyl Carbonate in Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate

2003 ◽  
Vol 2003 (9) ◽  
pp. 549-551 ◽  
Author(s):  
Tao Jiang ◽  
Buxing Han ◽  
Guoying Zhao ◽  
Yanhong Chang ◽  
Liang Gao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Supercritical Carbon Dioxide ◽  
Room Temperature ◽  
Dimethyl Carbonate ◽  
Room Temperature Ionic Liquid ◽  
Oxidative Carbonylation ◽  
Enhanced Selectivity ◽  
Supercritical Carbon

The synthesis of dimethyl carbonate (DMC) by oxidative carbonylation of methanol with PdCl2 as a catalyst was investigated in the room temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]). The products were recovered in situ using supercritical carbon dioxide. Enhanced selectivity of DMC over this catalyst was observed in the synthesis in [bmim][PF6] compared with the situation without the ionic liquid (IL). The mixture of catalyst and [bmim][PF6] could be recycled.

Direct Synthesis of Dimethyl Carbonate Form Methanol and Carbon Dioxide Using H3PW12O40/Ce0.1Ti0.9O2 with Ionic Liquid Catalysts

2011 ◽  
Vol 418-420 ◽  
pp. 38-41 ◽  
Author(s):  
Ru Chun Wu ◽  
Tao Xie ◽  
Mei Li
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Reaction Time ◽  
Reaction Temperature ◽  
Dimethyl Carbonate ◽  
High Selectivity ◽  
Time Pressure ◽  
Direct Synthesis ◽  
Temperature Reaction ◽  
Imidazolium Salt

H3PW12O40/Ce0.1Ti0.9O2and imidazolium salt ionic liquid catalysts were prepared and applied to the direct synthesis of dimethyl carbonate (DMC) from methanol and carbon dioxide. The effect of reaction temperature, reaction time, pressure of carbon dioxide and amount of H3PW12O40/Ce0.1Ti0.9O2in the presence of ionic liquid are discussed. The results showed that H3PW12O40/Ce0.1Ti0.9O2is an effective catalyst. The high selectivity and higher yield of DMC were achieved. The combination of imidazolium salt and H3PW12O40/Ce0.1Ti0.9O2could evidently improve the yield of the product. The maximum DMC yield reached up to 12.98 % in the presence of EMImCl at 140°C and 2.4 MPa.

Cu(ii) extraction by supercritical fluid carbon dioxide from a room temperature ionic liquid using fluorinated β-diketones

2005 ◽  
Vol 7 (6) ◽  
pp. 421 ◽  
Author(s):  
Soufiane Mekki ◽  
Chien M. Wai ◽  
Isabelle Billard ◽  
Gilles Moutiers ◽  
Clive H. Yen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Supercritical Fluid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Supercritical Fluid Carbon Dioxide

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.

Chemical fixation of carbon dioxide to dimethyl carbonate from propylene carbonate and methanol using ionic liquid catalysts

2007 ◽  
Vol 24 (5) ◽  
pp. 917-919 ◽  
Author(s):  
Hye-Young Ju ◽  
Mamparambath Dharman Manju ◽  
Kyung-Hoon Kim ◽  
Sang-Wook Park ◽  
Dae-Won Park
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Propylene Carbonate ◽  
Dimethyl Carbonate ◽  
Chemical Fixation ◽  
Fixation Of Carbon Dioxide

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

Tetra-butylphosphonium arginine-based ionic liquid-promoted cyclization of 2-aminobenzonitrile with carbon dioxide

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15668-15673 ◽  
Author(s):  
Xian-Dong Lang ◽  
Shuai Zhang ◽  
Qing-Wen Song ◽  
Liang-Nian He
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
Amino Groups ◽  
Solvent Free Conditions

Tetra-butylphosphonium arginine-based IL able to activate both amino-groups and CO2 proved to be an efficient and recyclable catalyst for the synthesis of quinazoline-2,4(1H,3H)-diones from 2-aminobenzonitriles and CO2 under solvent-free conditions.

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