A CuZnAl-Based Hybrid Material for the Direct Synthesis of Dimethyl Ether from Syngas

A CuZnAl-based hybrid material was prepared by co-precipitation impregnation method using the active components of methanol synthesis material and pseudo-boehmite as the precursors. The as-prepared material was evaluated for the direct synthesis of dimethyl ether (DME) from syngas in a pressurized continuous flow fixed-bed reactor system. It was revealed that the hybrid material showed high activity and selectivity after an induced period, i.e. the CO conversion and DME selectivity reached as high as 81% and 67%, respectively. Moreover, it was observed that there was only slight carbon which could be eliminated rather than graphite carbon deposited on the material after run for 150 h, indicating its good stability for the direct synthesis process .

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Effect of Si content on the performance of direct synthesis of dimethyl ether over slurry CuZnAl catalyst prepared by complete liquid phase technology

Journal of Fuel Chemistry and Technology ◽

10.1016/s1872-5813(21)60068-3 ◽

2021 ◽

Vol 49 (6) ◽

pp. 791-798

Author(s):

Kai SUN ◽

Zhong-kai BIAN ◽

Shu-yan CHENG ◽

Gui-ru WANG ◽

Lin ZHANG ◽

...

Keyword(s):

Liquid Phase ◽

Dimethyl Ether ◽

Direct Synthesis ◽

Si Content ◽

Synthesis Of Dimethyl Ether

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Analysis of chemical equilibrium in direct synthesis of dimethyl ether from syngas

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(03)90566-2 ◽

2003 ◽

Vol 44 (2) ◽

pp. 77

Keyword(s):

Dimethyl Ether ◽

Chemical Equilibrium ◽

Direct Synthesis ◽

Synthesis Of Dimethyl Ether

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Direct Synthesis of Dimethyl Ether from Syngas Over Hybrid Catalyst with Hierarchical ZSM-5 as the Methanol Dehydration Catalyst

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.16976 ◽

2020 ◽

Vol 20 (2) ◽

pp. 1245-1252

Author(s):

Mengdie Cai ◽

Dong Xiang ◽

Qin Cheng

Keyword(s):

Dimethyl Ether ◽

Direct Synthesis ◽

Methanol Dehydration ◽

Hybrid Catalyst ◽

Synthesis Of Dimethyl Ether

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Temperature-programmed surface reactions of methanol and dimethyl ether on bifunctional catalysts for the direct synthesis of dimethyl ether from syngas

MATEC Web of Conferences ◽

10.1051/matecconf/201824300002 ◽

2018 ◽

Vol 243 ◽

pp. 00002

Author(s):

Olga Vodorezova ◽

Pavel Musich ◽

Natalia Karakchieva ◽

Lothar Heinrich ◽

Irina Kurzina

Keyword(s):

Dimethyl Ether ◽

Direct Synthesis ◽

Bifunctional Catalyst ◽

Bifunctional Catalysts ◽

X Ray Diffraction ◽

X Ray ◽

Physical Mixing ◽

Stage Synthesis ◽

Temperature Programmed ◽

Synthesis Of Dimethyl Ether

Dimethyl ether (DME) can be used as a replacement for diesel fuel in transportation. The catalytic effectiveness of bifunctional catalysts for DME one-stage synthesis from carbon monoxide and hydrogen was estimated in the paper. Bifunctional catalysts CuZnAl/HZSM-5, CuZnAlCr/HZSM-5, and CuZnAlZr/HZSM-5 were obtained by physical mixing of CuZnAl(Cr/Zr)– Ох and HZSM-5 components and were characterized by BET, X-ray diffraction, and temperatureprogrammed surface reaction methods. Based on the TPSR results, the mechanism of the interaction of methanol and DME with the surface of the bifunctional catalyst was studied. It was found that the temperature range of the greatest catalytic activity was 240–260 °С.

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