Effect of framework structure of ZSM-11 and ZSM-5 zeolites on their catalytic performance in the conversion of methanol to olefins

YUAN Kai; JIA Xiang-yu; WANG Sen; FAN Sheng; HE Shi-pei; WANG Peng-fei; DONG Mei; QIN Zhang-feng; FAN Wei-bin; WANG Jian-guo

doi:10.1016/S1872-5813(23)60361-5

Volume 51 Issue 11

Nov. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(11): 1652-1662

YUAN Kai, JIA Xiang-yu, WANG Sen, FAN Sheng, HE Shi-pei, WANG Peng-fei, DONG Mei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Effect of framework structure of ZSM-11 and ZSM-5 zeolites on their catalytic performance in the conversion of methanol to olefins[J]. Journal of Fuel Chemistry and Technology, 2023, 51(11): 1652-1662. doi: 10.1016/S1872-5813(23)60361-5

Citation:

YUAN Kai, JIA Xiang-yu, WANG Sen, FAN Sheng, HE Shi-pei, WANG Peng-fei, DONG Mei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Effect of framework structure of ZSM-11 and ZSM-5 zeolites on their catalytic performance in the conversion of methanol to olefins[J]. Journal of Fuel Chemistry and Technology, 2023, 51(11): 1652-1662. doi: 10.1016/S1872-5813(23)60361-5

Citation:

YUAN Kai, JIA Xiang-yu, WANG Sen, FAN Sheng, HE Shi-pei, WANG Peng-fei, DONG Mei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Effect of framework structure of ZSM-11 and ZSM-5 zeolites on their catalytic performance in the conversion of methanol to olefins[J]. Journal of Fuel Chemistry and Technology, 2023, 51(11): 1652-1662. doi: 10.1016/S1872-5813(23)60361-5

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Effect of framework structure of ZSM-11 and ZSM-5 zeolites on their catalytic performance in the conversion of methanol to olefins

doi: 10.1016/S1872-5813(23)60361-5

YUAN Kai^{1, 2
,},
JIA Xiang-yu^{1, 2
,},
WANG Sen^{1
,
,},
FAN Sheng^{1, 2
,},
HE Shi-pei^{1, 2
,},
WANG Peng-fei^1
,,
DONG Mei^1
,,
QIN Zhang-feng^{1
,
,},
FAN Wei-bin^1
,,
WANG Jian-guo^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 100049, China

Funds: The project was supported by the National Key R&D Program of China (2020YFA0210900), National Natural Science Foundation of China (U1910203, 21991090, 21991092, 22272195, U22A20431) and Youth Innovation Promotion Association CAS (2021172)

Received Date: 2023-03-08
Accepted Date: 2023-04-11
Rev Recd Date: 2023-04-10

Available Online: 2023-04-25

Publish Date: 2023-11-13

Abstract

Abstract

The catalytic performance of zeolites is closely related to their framework structure and a clear understanding of such a structure-performance relationship is of great significance in revealing catalytic reaction mechanism as well as in developing efficient zeolite catalysts. Herein, ZSM-11 and ZSM-5 zeolites with similar morphology, crystal size, textural properties and acidity were hydrothermally synthesized; the effects of their differences in the 10-ring channels on the catalytic performance in the conversion of methanol to olefins (MTO) were investigated by using various characterization techniques. The results indicate that in comparison with the straight channel of ZSM-11, the sinusoidal channel of ZSM-5 has stronger diffusion resistance, which promotes the hydrogen-transfer in higher olefins, leads to forming more polymethylbenzene species and then raises the contribution of aromatic-based cycle. In contrast, ZSM-11 with straight channel can reduce the formation of polymethylbenzene species and enhance the alkene-based cycle. As a result, compared with ZSM-5-60 with similar morphology and acidity, ZSM-11-60 as a catalyst in MTO exhibits longer lifetime (98.3 h vs. 65.4 h) and higher selectivity to propene (34.6% vs. 27.4%). The insight shown in this work helps to have a better understanding of the relation between zeolite structure and catalytic performance in MTO and is then beneficial to the development of better catalysts and processes for MTO.
- ZSM-11,
- ZSM-5,
- straight channel,
- sinusoidal channel,
- methanol to olefins

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References(26)

References

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