Direct Conversion of Dimethyl Ether and CO to Acetone via Coupling Carbonylation and Ketonization

2021 ◽  
Author(s):  
Ziqiao Zhou ◽  
Hongchao Liu ◽  
Youming Ni ◽  
Fuli Wen ◽  
Zhiyang Chen ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Direct Conversion

scholarly journals Direct Conversion of CO2 into Dimethyl Ether over Al2O3/Cu/ZnO Catalysts Prepared by Sequential Precipitation

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 524 ◽  
Author(s):  
Cheonwoo Jeong ◽  
Jinsung Kim ◽  
Ji-Hyeon Kim ◽  
Sunghoon Lee ◽  
Jong Wook Bae ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Catalyst System ◽  
Direct Conversion ◽  
Mixed Metal Oxide ◽  
Oxide Materials ◽  
Co2 Conversion ◽  
Activity Test ◽  
Sequential Precipitation ◽  
Dual Bed ◽  
Complete Precipitation

Bifunctional Al2O3/Cu/ZnO catalysts with Al composition of between 30 mol% and 80 mol% were prepared by sequential precipitation (SP) for the conversion of CO2 into dimethyl ether (DME). In the SP synthesis, the concentration of a precipitation agent managed to be high enough to induce the complete precipitation of Al3+. The prepared precipitates were composed of zincian malachite and amorphous AlO(OH). Furthermore, the calcined mixed metal oxide materials of 60% and 80% Al exhibited a higher acidity than commercial Al2O3 and the H2-reduced catalysts showed the similar Cu dispersion of 6%–7% at all Cu loadings. In the activity test at 573 K and 50 bar, the SP-derived catalyst of 80% Al (SP-80) displayed the best performance corresponding to CO2 conversion of 25% and DME selectivity of 75% that are close to equilibrium values. In order to overcome the thermodynamic limitation, a dual-bed catalyst system was made up of SP-80 in the first layer and zeolite ferrierite in the next. This approach enabled DME selectivity to be enhanced to 90% while CO2 conversion increased a little. Consequently, the studied catalyst system based on the SP-derived catalysts can contribute greatly to selective DME production from CO2.

scholarly journals Conversion of dimethyl ether to toluene under an O2 stream over W/HZSM-5 catalysts

2015 ◽  
Vol 5 (3) ◽  
pp. 1813-1820 ◽  
Author(s):  
Bo Wang ◽  
Hui Wang ◽  
Guangbo Liu ◽  
Xuemin Li ◽  
Jinhu Wu
Keyword(s):  
Dimethyl Ether ◽  
Direct Conversion

The direct conversion of dimethyl ether (DME) to toluene without other aromatics is realized over W/HZSM-5 catalysts with high W contents.

Direct conversion of syngas to dimethyl ether as a green fuel over ultrasound-assisted synthesized CuO–ZnO–Al2O3/HZSM-5 nanocatalyst: effect of active phase ratio on physicochemical and catalytic properties at different process conditions

2014 ◽  
Vol 4 (6) ◽  
pp. 1779-1792 ◽  
Author(s):  
Reza Khoshbin ◽  
Mohammad Haghighi
Keyword(s):  
Dimethyl Ether ◽  
Catalytic Properties ◽  
Active Phase ◽  
Direct Conversion ◽  
Phase Ratio ◽  
Process Conditions ◽  
Ultrasound Assisted ◽  
Co Precipitation ◽  
Green Fuel

Hybrid co-precipitation–ultrasound synthesis of CuO–ZnO–Al2O3/HZSM-5 used in direct conversion of syngas to dimethyl ether as a green fuel.

scholarly journals Design of efficient bifunctional catalysts for direct conversion of syngas into lower olefins via methanol/dimethyl ether intermediates

2018 ◽  
Vol 9 (20) ◽  
pp. 4708-4718 ◽  
Author(s):  
Xiaoliang Liu ◽  
Wei Zhou ◽  
Yudan Yang ◽  
Kang Cheng ◽  
Jincan Kang ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Direct Conversion ◽  
Bifunctional Catalysts ◽  
Lower Olefins ◽  
Co Conversion

Zn–ZrO2/SSZ-13 catalyzed direct conversion of syngas into lower olefins via methanol/DME intermediates with 77% selectivity at 29% CO conversion.

Direct Conversion of Syngas into Methyl Acetate, Ethanol, and Ethylene by Relay Catalysis via the Intermediate Dimethyl Ether

2018 ◽  
Vol 57 (37) ◽  
pp. 12012-12016 ◽  
Author(s):  
Wei Zhou ◽  
Jincan Kang ◽  
Kang Cheng ◽  
Shun He ◽  
Jiaqing Shi ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Methyl Acetate ◽  
Direct Conversion

Bifunctional catalysts based on colloidal Cu/Zn nanoparticles for the direct conversion of synthesis gas to dimethyl ether and hydrocarbons

2018 ◽  
Vol 557 ◽  
pp. 99-107 ◽  
Author(s):  
M. Gentzen ◽  
D.E. Doronkin ◽  
T.L. Sheppard ◽  
J.-D. Grunwaldt ◽  
J. Sauer ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Synthesis Gas ◽  
Direct Conversion ◽  
Bifunctional Catalysts ◽  
Zn Nanoparticles

Direct Conversion of Syngas into Methyl Acetate, Ethanol, and Ethylene by Relay Catalysis via the Intermediate Dimethyl Ether

2018 ◽  
Vol 130 (37) ◽  
pp. 12188-12192 ◽  
Author(s):  
Wei Zhou ◽  
Jincan Kang ◽  
Kang Cheng ◽  
Shun He ◽  
Jiaqing Shi ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Methyl Acetate ◽  
Direct Conversion
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