Highly effective synthesis of dimethyl carbonate from methanol and carbon dioxide using a novel copper–nickel/graphite bimetallic nanocomposite catalyst

Existing (production of urea, dimethyl carbonate, polypropylene carbonate) and promising (production of methanol, synthesis gas, monomers dedicated to synthesis of polyurethanes and polycarbonate) chemical technologies which any, time soon, may become CO2 based economy for producing motor fuels and basic chemicals have been overviewed. Based on estimates of CO2 removals in these processes, it has been concluded that there is a potential for developing technologies to produce methanol from CO2 to a competitive cost of the target product. It is expected that interest in this process will decrease if stable carbon dioxide conversion catalysts for methane are introduced into the market.

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Synthesis of dimethyl carbonate from methanol and supercritical carbon dioxide

Research on Chemical Intermediates ◽

10.1163/156856706778606552 ◽

2006 ◽

Vol 32 (8) ◽

pp. 737-747 ◽

Cited By ~ 21

Author(s):

Seung Tae Hong ◽

Hyung Sang Park ◽

Jong Sung Lim ◽

Youn-Woo Lee ◽

Masakazu Anpo ◽

...

Keyword(s):

Carbon Dioxide ◽

Supercritical Carbon Dioxide ◽

Dimethyl Carbonate ◽

Supercritical Carbon

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

Revista Facultad de Ingeniería Universidad de Antioquia ◽

10.17533/udea.redin.20190941 ◽

2019 ◽

pp. 88-99 ◽

Cited By ~ 1

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.

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