Preparation, Structure and Performance of [CuO-ZnO-Al2O3]/ [HZSM-5] Core-Shell Bifunctional Catalysts for One-Step Synthesis of Dimethyl Ether from CO2+H2

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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Structured catalysts for the direct synthesis of dimethyl ether from synthesis gas: A comparison of core@shell versus hybrid catalyst configuration

Catalysis Today ◽

10.1016/j.cattod.2019.07.016 ◽

2020 ◽

Vol 342 ◽

pp. 46-58 ◽

Cited By ~ 1

Author(s):

Giulia Baracchini ◽

Albert G.F. Machoke ◽

Michael Klumpp ◽

Ruoxi Wen ◽

Patrick Arnold ◽

...

Keyword(s):

Dimethyl Ether ◽

Synthesis Gas ◽

Direct Synthesis ◽

Core Shell ◽

Hybrid Catalyst ◽

Structured Catalysts ◽

Synthesis Of Dimethyl Ether

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Catalysis for One-step Synthesis of Dimethyl Ether from Hydrogenation of CO

Chinese Journal of Chemistry ◽

10.1002/cjoc.20010190112 ◽

2010 ◽

Vol 19 (1) ◽

pp. 67-72 ◽

Cited By ~ 13

Author(s):

Xiao-Ming Zheng ◽

Jin-Hua Fei ◽

Zhao-Yin Hou

Keyword(s):

Dimethyl Ether ◽

One Step ◽

Synthesis Of Dimethyl Ether ◽

Hydrogenation Of Co

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Synthesis of Dimethyl Ether over Modified H-Mordenite Zeolites and Bifunctional Catalysts Composed of Cu/ZnO/ZrO2 and Modified H-Mordenite Zeolite in Slurry Phase

Catalysis Letters ◽

10.1007/s10562-008-9779-8 ◽

2008 ◽

Vol 129 (1-2) ◽

pp. 111-118 ◽

Cited By ~ 17

Author(s):

Nahid Khandan ◽

Mohammad Kazemeini ◽

Mahmoud Aghaziarati

Keyword(s):

Dimethyl Ether ◽

Bifunctional Catalysts ◽

Slurry Phase ◽

Synthesis Of Dimethyl Ether

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Study on Preparation and Catalytic Properties of Pd/γ-Al2O3 Catalysts in One-Step Synthesis of Dimethyl Ether

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.66-68.1404 ◽

2011 ◽

Vol 66-68 ◽

pp. 1404-1409 ◽

Cited By ~ 4

Author(s):

Rui Zhi Chu ◽

Zhong Cai Zhang ◽

Ya Fei Liu ◽

Xian Liang Meng ◽

Zhi Min Zong ◽

...

Keyword(s):

Dimethyl Ether ◽

Catalytic Performance ◽

Acid Sites ◽

Co Conversion ◽

Dimethyl Ether Synthesis ◽

Acidic Sites ◽

One Step ◽

Space Time Yield ◽

Ether Synthesis ◽

Synthesis Of Dimethyl Ether

A series of Pd/γ-Al2O3 catalysts with different additons of Pd were prepared by impregnation. The effect of calcination condition and Pd loading on catalytic performance of catalysts for one-step dimethyl ether synthesis has been investigated. The physic-chemical performance and structure of Pd/γ-Al2O3 catalysts were characterized by CO-TPD, TGA and nitrogen physisorption. The results show that the dispersion of Pd and the amount of adsorbration on the CO-bridge of Pd could be increased to by the moderate microwave heating on the catalysts, and the catalyst performance can be improved. But a large number of surface acidic sites of Pd/γ-Al2O3 are covered by highly fragmented Pd-grain, it causes DME selectivity reduced. And the excessive Pd can reduce the samples’ surface acid, decrease the dispersion of the metal Pd and block up the pore of γ-Al2O3. The CO conversion rate and DME space-time yield could reach 60.1% and 28.76 mmol·g-1·h-1 respectively at 2% Pd loading, at this time Pd/γ-Al2O3 has a high Pd activity surface and ideal acid sites.

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