Improved stability of Pd/HZSM-5 bifunctional catalysts by the addition of promoters (CeO 2 , CaO) for the One-step synthesis of dimethyl ether from Sulfur-containing CO 2 hydrogenation

2017 ◽  
Vol 80 ◽  
pp. 1041-1047 ◽  
Author(s):  
Ruizhi Chu ◽  
Chengcheng Song ◽  
Wenxin Hou ◽  
Xianliang Meng ◽  
Zhenyong Miao ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Bifunctional Catalysts ◽  
Improved Stability ◽  
One Step ◽  
The One ◽  
Sulfur Containing ◽  
Synthesis Of Dimethyl Ether

In-situ regeneration mechanisms of hybrid catalysts in the one-step synthesis of dimethyl ether from syngas

2007 ◽  
Vol 115 (1-2) ◽  
pp. 23-26 ◽  
Author(s):  
Youshun Luan ◽  
Hengyong Xu ◽  
Chunying Yu ◽  
Wenzhao Li ◽  
Shoufu Hou
Keyword(s):  
Dimethyl Ether ◽  
Hybrid Catalysts ◽  
In Situ Regeneration ◽  
One Step ◽  
The One ◽  
Synthesis Of Dimethyl Ether

Activity and Deactivation of ZSM–5 Catalysts in the Dimethyl Ether Synthesis from CO and H2 and Methanol Dehydration

2016 ◽  
Vol 683 ◽  
pp. 406-414 ◽  
Author(s):  
Pavel Musich ◽  
Lubov Shilyaeva ◽  
Larisa Kurina ◽  
Alexander Vosmerikov ◽  
Natalia Kosova
Keyword(s):  
Dimethyl Ether ◽  
Synthesis Gas ◽  
Condensation Products ◽  
Dimethyl Ether Synthesis ◽  
Before And After ◽  
One Step ◽  
Increasing Demand ◽  
The One ◽  
Ether Synthesis ◽  
Synthesis Of Dimethyl Ether

The increasing demand for producing dimethyl ether from synthesis gas explains the renewed interest in studying the activity and stability of catalysts. In the present work, resource catalytic testing of ZSM-5 zeolites was carried out in the one-step synthesis of dimethyl ether from synthesis gas for 120 hours. Formation of condensation products was observed on zeolite surface after catalytic tests which leads to lower catalytic activity of samples. Condensation products were investigated by thermal analysis in an oxidizing atmosphere. Textural characteristics of zeolites before and after reaction were investigated. It was shown that methanol significantly contribute to formation of condensation products on the catalyst surface in the process of dimethyl ether production.

One-step synthesis of dimethyl ether from syngas on ordered mesoporous copper incorporated alumina

2016 ◽  
Vol 25 (5) ◽  
pp. 775-781 ◽  
Author(s):  
Yan Wang ◽  
Yuexian Chen ◽  
Feng Yu ◽  
Dahai Pan ◽  
Binbin Fan ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Ordered Mesoporous ◽  
One Step ◽  
Synthesis Of Dimethyl Ether

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

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.

Effects of the support on bifunctional one-step synthesis of methylal via methanol oxidation catalysed by Fe–Mo-based bifunctional catalysts

2021 ◽  
Vol 5 (1) ◽  
pp. 246-260
Author(s):  
Meng Yuan ◽  
Ruiyuan Tang ◽  
Xiangyu Sun ◽  
Zhimei Zhang ◽  
Yuanyu Tian ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Methanol Conversion ◽  
Bifunctional Catalysts ◽  
One Step ◽  
The One ◽  
Huge Challenge

In the one-step preparation of methylal from methanol, achieving high methanol conversion and high methylal yield is a huge challenge.

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

2010 ◽  
Vol 19 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Xiao-Ming Zheng ◽  
Jin-Hua Fei ◽  
Zhao-Yin Hou
Keyword(s):  
Dimethyl Ether ◽  
One Step ◽  
Synthesis Of Dimethyl Ether ◽  
Hydrogenation Of Co

A double-shell capsule catalyst with core–shell-like structure for one-step exactly controlled synthesis of dimethyl ether from CO2 containing syngas

2011 ◽  
Vol 171 (1) ◽  
pp. 229-235 ◽  
Author(s):  
Guohui Yang ◽  
Montree Thongkam ◽  
Tharapong Vitidsant ◽  
Yoshiharu Yoneyama ◽  
Yisheng Tan ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Core Shell ◽  
Controlled Synthesis ◽  
One Step ◽  
Synthesis Of Dimethyl Ether
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