Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane

WANG Jia; GAO Xiujuan; SONG Faen; ZHANG Junfeng; WANG Xiaoxing; ZHANG Tao; TAN Yisheng; HAN Yizhuo; ZHANG Qingde

doi:10.1016/S1872-5813(23)60370-6

Volume 52 Issue 1

Jan. 2024

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Article Navigation > Journal of Fuel Chemistry and Technology > 2024 > 52(1): 38-46

WANG Jia, GAO Xiujuan, SONG Faen, ZHANG Junfeng, WANG Xiaoxing, ZHANG Tao, TAN Yisheng, HAN Yizhuo, ZHANG Qingde. Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 38-46. doi: 10.1016/S1872-5813(23)60370-6

Citation:

WANG Jia, GAO Xiujuan, SONG Faen, ZHANG Junfeng, WANG Xiaoxing, ZHANG Tao, TAN Yisheng, HAN Yizhuo, ZHANG Qingde. Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 38-46. doi: 10.1016/S1872-5813(23)60370-6

Citation:

WANG Jia, GAO Xiujuan, SONG Faen, ZHANG Junfeng, WANG Xiaoxing, ZHANG Tao, TAN Yisheng, HAN Yizhuo, ZHANG Qingde. Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 38-46. doi: 10.1016/S1872-5813(23)60370-6

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Effect of molybdenum valence in low Mo/Sn ratio catalysts for the oxidation of methanol to dimethoxymethane

doi: 10.1016/S1872-5813(23)60370-6

WANG Jia^{1, 2
,},
GAO Xiujuan^{1, 2
,},
SONG Faen^{1
,
,},
ZHANG Junfeng^1
,,
WANG Xiaoxing^1
,,
ZHANG Tao^1
,,
TAN Yisheng^1
,,
HAN Yizhuo^1
,,
ZHANG Qingde^{1, 3
,
,}

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 100049, China
3.
Dalian National Laboratory for Clean Energy, Dalian 116023, China

Funds: The project was supported by the National Natural Science Foundation of China (22172187)，the Central Guidance on Local Science and Technology Development Fund of Shanxi Province (YDZJSX2022A072)，the Dalian National Laboratory For Clean Energy (DNL) Cooperation Fund，CAS (DNL 201903)，and the Youth Innovation Promotion Association CAS (2014155)

Received Date: 2023-04-04
Accepted Date: 2023-04-27
Rev Recd Date: 2023-04-26

Available Online: 2023-05-24

Publish Date: 2024-01-09

Abstract

Abstract

A series of Mo/Sn (1:20, molar ratio) catalysts were prepared by two-step hydrothermal synthesis method, and the effect of calcination temperature of tin precursors on the reaction performance of methanol oxidation to dimethoxymethane (DMM) was investigated. The crystal structure, surface properties, redox property and valence change of molybdenum species of the catalyst were characterized by XRD, Raman, FT-IR, XPS, NH₃-TPD and H₂-TPR. The results showed that Mo1Sn20-600℃Sn catalyst exhibited better performance than other catalysts, achieving DMM selectivity of 90% with methanol conversion of 30% at 140 ℃. From the characterization results, the surface properties of the tin precursors affected the structure of catalyst, the degree of molybdenum oxide dispersion and valence of molybdenum species, and further influenced the performance of the catalysts. The high temperature calcination of tin precursors is more favorable for the generation of Mo⁶⁺ in the Mo1Sn20 catalyst.
- methanol,
- low temperature oxidation,
- dimethoxymethane,
- Mo1Sn20 catalyst,
- Mo⁶⁺ species

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References(37)

References

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