Yajun Ji

Dr. Yajun Ji

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 November 2017 in Catalysts
Verified
Journal Article
Open access
PDF file
YJYajun Ji
Yajun Ji
HYHonghui Yang
Honghui Yang
WYWei Yan
Wei Yan
ZSM-5 zeolite is widely used in catalytic cracking of hydrocarbon, but the conventional ZSM-5 zeolite deactivates quickly due to its simple microporous and long diffusion pathway. Many studies have been done to overcome these disadvantages recently. In this review, four main approaches for enhancing the catalytic performance, namely synthesis of ZSM-5 zeolite with special morphology, hierarchical ZSM-5 zeolite, nano-sized ZSM-5 zeolite and optimization of acid properties, are discussed. ZSM-5 with special morphology such as hollow, composite and nanosheet structure can effectively increase the diffusion efficiency and accessibility of acid sites, giving high catalytic activity. The accessibility of acid sites and diffusion efficiency can also be enhanced by introducing additional mesopores or macropores. By decreasing the crystal size to nanoscale, the diffusion length can be shortened. The catalytic activity increases and the amount of carbon deposition decreases with the decrease of crystal size. By regulating the acid properties of ZSM-5 with element or compound modification, the overreaction of reactants and formation of carbon deposition could be suppressed, thus enhancing the catalytic activity and light alkene selectivity. Besides, some future needs and perspectives of ZSM-5 with excellent cracking activity are addressed for researchers’ consideration.


1 March 2017 in Applied Catalysis A: General
Verified
Journal Article
Closed access
YJYajun Ji
Yajun Ji
BSBofang Shi
Bofang Shi
HYHonghui Yang
Honghui Yang
WYWei Yan
Wei Yan

1 May 2021 in Journal of Colloid and Interface Science
Verified
Journal Article
Closed access
YJYajun Ji
Yajun Ji
WZWenlong Zhang
Wenlong Zhang
HYHonghui Yang
Honghui Yang
FMFang Ma
Fang Ma
FXFeiya Xu
Feiya Xu

1 July 2017 in Journal of Solid State Chemistry
Verified
Journal Article
Closed access
YJYajun Ji
Yajun Ji
HYHonghui Yang
Honghui Yang
QZQiang Zhang
Qiang Zhang
WYWei Yan
Wei Yan

1 April 2020 in Applied Surface Science
Verified
Journal Article
Closed access
BSBofang Shi
Bofang Shi
CZChengcheng Zhao
Chengcheng Zhao
YJYajun Ji
Yajun Ji
JSJinwen Shi
Jinwen Shi
HYHonghui Yang
Honghui Yang