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Start Over Author "Xiaojing Yong" Journal royal society open science
2 results on '"Xiaojing Yong"'

1. The guiding role of pre-coking on the coke deposition over ZSM-5 in methanol to propylene

Author

Lin Wang, Jing Qi, Hongqiao Jiao, Liangcheng An, Chong Guan, Xiaojing Yong, Zhengwei Jin, Angui Zhang, and Dianhua Liu

Subjects
pre-coking, zsm-5 zeolites, methanol to propylene, catalyst, Science
Abstract

Deposition of carbonaceous compounds was used to improve the propylene selectivity of ZSM-5 by deactivating some acid sites meanwhile maintaining the high activity for methanol conversion. The carbonaceous species of pre-coked samples before and after MTP reactions were investigated by elementary analysis and thermogravimetric analysis (TGA). The results showed that pre-coke formed at low temperature (250°C) was unstable and easy to transform into polyaromatics species at the high reacting temperature, while combining 5% pre-coking process with 95% steam treatment at high temperature (480°C) was effective in inhibiting the formation of coke deposits and presented a significant improvement in the propylene selectivity.

Published
2019
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2. The guiding role of pre-coking on the coke deposition over ZSM-5 in methanol to propylene

Author

Zhang Angui, Jin Zhengwei, Xiaojing Yong, Jing Qi, Dianhua Liu, Lin Wang, Guan Chong, Jiao Hongqiao, and An Liangcheng

Subjects
Materials science, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, complex mixtures, Catalysis, Coke deposition, chemistry.chemical_compound, pre-coking, High activity, lcsh:Science, Multidisciplinary, zsm-5 zeolites, technology, industry, and agriculture, 021001 nanoscience & nanotechnology, 0104 chemical sciences, respiratory tract diseases, methanol to propylene, Chemistry, Chemical engineering, chemistry, lcsh:Q, Methanol, ZSM-5, 0210 nano-technology, Selectivity, Deposition (chemistry), Research Article, catalyst
Abstract

Deposition of carbonaceous compounds was used to improve the propylene selectivity of ZSM-5 by deactivating some acid sites meanwhile maintaining the high activity for methanol conversion. The carbonaceous species of pre-coked samples before and after MTP reactions were investigated by elementary analysis and thermogravimetric analysis (TGA). The results showed that pre-coke formed at low temperature (250°C) was unstable and easy to transform into polyaromatics species at the high reacting temperature, while combining 5% pre-coking process with 95% steam treatment at high temperature (480°C) was effective in inhibiting the formation of coke deposits and presented a significant improvement in the propylene selectivity.

Published
2019

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