Effect of calcination temperature on the structure and performance of molybdenum-tin catalyst for DME oxidation

XIONG Pan; GAO Xiu-juan; WANG Wen-xiu; ZHANG Jun-feng; SONG Fa-en; ZHANG Qing-de; HAN Yi-zhuo; TAN Yi-sheng

doi:10.1016/S1872-5813(21)60120-2

Volume 50 Issue 1

Jan. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(1): 63-71

XIONG Pan, GAO Xiu-juan, WANG Wen-xiu, ZHANG Jun-feng, SONG Fa-en, ZHANG Qing-de, HAN Yi-zhuo, TAN Yi-sheng. Effect of calcination temperature on the structure and performance of molybdenum-tin catalyst for DME oxidation[J]. Journal of Fuel Chemistry and Technology, 2022, 50(1): 63-71. doi: 10.1016/S1872-5813(21)60120-2

Citation:

XIONG Pan, GAO Xiu-juan, WANG Wen-xiu, ZHANG Jun-feng, SONG Fa-en, ZHANG Qing-de, HAN Yi-zhuo, TAN Yi-sheng. Effect of calcination temperature on the structure and performance of molybdenum-tin catalyst for DME oxidation[J]. Journal of Fuel Chemistry and Technology, 2022, 50(1): 63-71. doi: 10.1016/S1872-5813(21)60120-2

Citation:

XIONG Pan, GAO Xiu-juan, WANG Wen-xiu, ZHANG Jun-feng, SONG Fa-en, ZHANG Qing-de, HAN Yi-zhuo, TAN Yi-sheng. Effect of calcination temperature on the structure and performance of molybdenum-tin catalyst for DME oxidation[J]. Journal of Fuel Chemistry and Technology, 2022, 50(1): 63-71. doi: 10.1016/S1872-5813(21)60120-2

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Effect of calcination temperature on the structure and performance of molybdenum-tin catalyst for DME oxidation

doi: 10.1016/S1872-5813(21)60120-2

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 10049, China
3.
Dalian National Laboratory for Clean Energy, Dalian 116023, China

Funds: The project was supported by the National Natural Science Foundation of China (21773283, 21373253), CAS Interdisciplinary Innovation Team (BK2018001), the Dalian National Laboratory For Clean Energy (DNL 201903) Cooperation Fund, CAS (DNL 201903), the Youth Innovation Promotion Association CAS (2014155) and the Open Project Program of State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University (201624)

Received Date: 2021-04-26
Rev Recd Date: 2021-05-23

Available Online: 2021-06-25

Publish Date: 2022-01-25

Abstract

Abstract

The Mo1Sn2 catalysts with a Mo/Sn molar ratio of 1∶2 were prepared by the hydrothermal method, and their structure was regulated by changing the calcination temperature (400–700 ℃). The effect of the structural transformation of catalysts on the performance of selective oxidation of dimethyl ether (DME) to methyl formate (MF) was studied. It was found that the Mo1Sn2 catalyst calcined at 400 ℃ exhibited good performance in the oxidation of DME to methyl formate, showing a DME conversion of 9.2% and the MF selectivity of 86.9% at 110 ℃ and under atmospheric pressure without the generation of CO_x. The catalysts were systematically characterized by XRD, Raman, XPS, TPD, H₂-TPR and in-situ FT-IR. The results showed that the low-temperature calcination was favorable for the formation of MoO_x structure and more Mo⁵⁺ species on the catalyst surface, resulting in the enhanced acidity and redox ability of the catalyst, and the increase of medium to strong basic sites on the catalysts. In such case, the activity and methyl formate production of the catalyst were significantly promoted.
- dimethyl ether oxidation,
- Mo1Sn2 catalyst,
- calcination temperature,
- structure,
- methyl formate

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References(32)

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