Effect of redox atmosphere treatment on bifunctional Ga/ZSM-5 for efficient catalytic cracking of n-butane

Zenan Ni; Yuming Li; Yaoyuan Zhang; Yajun Wang; Guoqing Cui; Guiyuan Jiang; Zhen Zhao; Chunming Xu

doi:10.1016/j.ces.2021.116856

Effect of redox atmosphere treatment on bifunctional Ga/ZSM-5 for efficient catalytic cracking of n-butane

Zenan Ni, Yuming Li, Yaoyuan Zhang, Yajun Wang, Guoqing Cui, Guiyuan Jiang^*, Zhen Zhao, Chunming Xu

^*Corresponding author for this work

China University of Petroleum - Beijing

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Ga species with high dehydrogenation capability were prepared by H₂-O₂ atmosphere treatment, and efficient balance of bifunctionality (dehydrogenation/cracking) was realized between Ga species and ZSM-5 over Ga/ZSM-5 based catalysts. Compared with parent Ga/ZSM-5, the conversion rate of n-butane was increased from 0.53 to 2.59 mmol·g⁻¹·min⁻¹ on Ga/ZSM-5 with H₂-O₂ treatment. Kinetic analysis revealed that the apparent activation energy of n-butane catalytic cracking decreased largely from 141 to 47 kJ·mol⁻¹, which is attributed to the formation of new interaction between Ga species and ZSM-5 upon such an atmosphere treatment. It was also found Butane-O₂ treatment acted as a similar role with H₂-O₂ treatment in enhancing the catalytic performance. On this basis, different Ga species were correlated with activity and kinetic data, and the effect of practical reaction atmosphere on Ga species was also investigated.

Original language	English
Article number	116856
Journal	Chemical Engineering Science
Volume	245
DOIs	https://doi.org/10.1016/j.ces.2021.116856
Publication status	Published - 14 Dec 2021
Externally published	Yes

Keywords

Activation energy
Atmosphere treatment
Catalytic cracking
Ga/ZSM-5
N-butane

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title = "Effect of redox atmosphere treatment on bifunctional Ga/ZSM-5 for efficient catalytic cracking of n-butane",

abstract = "Ga species with high dehydrogenation capability were prepared by H2-O2 atmosphere treatment, and efficient balance of bifunctionality (dehydrogenation/cracking) was realized between Ga species and ZSM-5 over Ga/ZSM-5 based catalysts. Compared with parent Ga/ZSM-5, the conversion rate of n-butane was increased from 0.53 to 2.59 mmol·g−1·min−1 on Ga/ZSM-5 with H2-O2 treatment. Kinetic analysis revealed that the apparent activation energy of n-butane catalytic cracking decreased largely from 141 to 47 kJ·mol−1, which is attributed to the formation of new interaction between Ga species and ZSM-5 upon such an atmosphere treatment. It was also found Butane-O2 treatment acted as a similar role with H2-O2 treatment in enhancing the catalytic performance. On this basis, different Ga species were correlated with activity and kinetic data, and the effect of practical reaction atmosphere on Ga species was also investigated.",

keywords = "Activation energy, Atmosphere treatment, Catalytic cracking, Ga/ZSM-5, N-butane",

author = "Zenan Ni and Yuming Li and Yaoyuan Zhang and Yajun Wang and Guoqing Cui and Guiyuan Jiang and Zhen Zhao and Chunming Xu",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = dec,

day = "14",

doi = "10.1016/j.ces.2021.116856",

language = "English",

volume = "245",

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T1 - Effect of redox atmosphere treatment on bifunctional Ga/ZSM-5 for efficient catalytic cracking of n-butane

AU - Ni, Zenan

AU - Li, Yuming

AU - Zhang, Yaoyuan

AU - Wang, Yajun

AU - Cui, Guoqing

AU - Jiang, Guiyuan

AU - Zhao, Zhen

AU - Xu, Chunming

PY - 2021/12/14

Y1 - 2021/12/14

N2 - Ga species with high dehydrogenation capability were prepared by H2-O2 atmosphere treatment, and efficient balance of bifunctionality (dehydrogenation/cracking) was realized between Ga species and ZSM-5 over Ga/ZSM-5 based catalysts. Compared with parent Ga/ZSM-5, the conversion rate of n-butane was increased from 0.53 to 2.59 mmol·g−1·min−1 on Ga/ZSM-5 with H2-O2 treatment. Kinetic analysis revealed that the apparent activation energy of n-butane catalytic cracking decreased largely from 141 to 47 kJ·mol−1, which is attributed to the formation of new interaction between Ga species and ZSM-5 upon such an atmosphere treatment. It was also found Butane-O2 treatment acted as a similar role with H2-O2 treatment in enhancing the catalytic performance. On this basis, different Ga species were correlated with activity and kinetic data, and the effect of practical reaction atmosphere on Ga species was also investigated.

AB - Ga species with high dehydrogenation capability were prepared by H2-O2 atmosphere treatment, and efficient balance of bifunctionality (dehydrogenation/cracking) was realized between Ga species and ZSM-5 over Ga/ZSM-5 based catalysts. Compared with parent Ga/ZSM-5, the conversion rate of n-butane was increased from 0.53 to 2.59 mmol·g−1·min−1 on Ga/ZSM-5 with H2-O2 treatment. Kinetic analysis revealed that the apparent activation energy of n-butane catalytic cracking decreased largely from 141 to 47 kJ·mol−1, which is attributed to the formation of new interaction between Ga species and ZSM-5 upon such an atmosphere treatment. It was also found Butane-O2 treatment acted as a similar role with H2-O2 treatment in enhancing the catalytic performance. On this basis, different Ga species were correlated with activity and kinetic data, and the effect of practical reaction atmosphere on Ga species was also investigated.

KW - Activation energy

KW - Atmosphere treatment

KW - Catalytic cracking

KW - Ga/ZSM-5

KW - N-butane

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DO - 10.1016/j.ces.2021.116856

M3 - Article

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SN - 0009-2509

VL - 245

JO - Chemical Engineering Science

JF - Chemical Engineering Science

M1 - 116856

ER -

Effect of redox atmosphere treatment on bifunctional Ga/ZSM-5 for efficient catalytic cracking of n-butane

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Keywords

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