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Yifeng Yun
Publications - 13
Citations - 349
Yifeng Yun is an academic researcher. The author has contributed to research in topics: Catalysis & Lewis acids and bases. The author has an hindex of 5, co-authored 13 publications receiving 169 citations.
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Journal ArticleDOI
Relationship between Iron Carbide Phases (ε-Fe2C, Fe7C3, and χ-Fe5C2) and Catalytic Performances of Fe/SiO2 Fischer–Tropsch Catalysts
Qiang Chang,Chenghua Zhang,Chengwei Liu,Yuxue Wei,Ajin V. Cheruvathur,A. Iulian Dugulan,J.W. Niemantsverdriet,Xingwu Liu,Yurong He,Ming Qing,Lirong Zheng,Yifeng Yun,Yong Yang,Yong-Wang Li +13 more
TL;DR: In this paper, the influence of different iron carbides on the activity and selectivity of iron-based Fischer-Tropsch catalysts has been studied, and the intrinsic FTS activity is assigned to each corresponding iron carbide based on the phase composition and the particle size.
Journal ArticleDOI
Origin of weak Lewis acids on silanol nests in dealuminated zeolite Beta
Fengjiao Yi,Yunlei Chen,Zhichao Tao,Caixia Hu,Xianfeng Yi,Anmin Zheng,Xiaodong Wen,Yifeng Yun,Yong Yang,Yong-Wang Li +9 more
TL;DR: In this article, the structure of weak Lewis acid sites from silanol nests in high-silica zeolite Beta obtained by dealumination was confirmed using various characterization methods, such as NMR and IR, and DFT calculations.
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Synthesis and characterization of bundle-shaped ZSM-22 zeolite via the oriented fusion of nanorods and its enhanced isomerization performance
Zhiqiang Chen,Suyao Liu,Honghao Wang,Qiang Ning,Huaike Zhang,Yifeng Yun,Jie Ren,Yong-Wang Li +7 more
TL;DR: In this article, needle-shaped, bundle-shaped and bulk-shaped morphologies are prepared by tuning hydrothermal synthesis conditions and the acidity properties determined by Py-FTIR and DMPyFTIR show that the interfacial effect between the adjacent nanorods can effectively suppress Bronsted acid strength at pore mouths and external surface.
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Deactivation of Pt/KL catalyst during n-heptane aromatization reaction
Ke Li,Qiang Chang,Junqing Yin,Chunli Zhao,Huang Lihua,Zhichao Tao,Yifeng Yun,Chenghua Zhang,Hongwei Xiang,Yong Yang,Yong-Wang Li +10 more
TL;DR: In this article, the deactivation of Pt/KL catalyst during n-heptane aromatization reaction was investigated and it was attributed to declined accessibility to Pt active sites because of coke deposition.
Journal ArticleDOI
Design and synthesis of Ga-doped ZSM-22 zeolites as highly selective and stable catalysts for n-dodecane isomerization
Suyao Liu,Yurong He,Huaike Zhang,Zhiqiang Chen,Enjing Lv,Jie Ren,Yifeng Yun,Xiaodong Wen,Yong-Wang Li +8 more
TL;DR: In this paper, Ga-Doped ZSM-22 zeolites were synthesized successfully via a hydrothermal method by directly incorporating Ga species into the zeolite framework.