Lanthanum/Gallium-Modified Zn/ZSM-5 Zeolite for Efficient Isomerization/Aromatization of FCC Light Gasoline

Shaotong Song; Tianshu Li; Yana Ju; Yang Li; Zhongwu Lv; Peng Zheng; Aijun Duan; Pei Wu; Xilong Wang

doi:10.1021/acs.iecr.2c01104

Lanthanum/Gallium-Modified Zn/ZSM-5 Zeolite for Efficient Isomerization/Aromatization of FCC Light Gasoline

Shaotong Song, Tianshu Li, Yana Ju, Yang Li, Zhongwu Lv, Peng Zheng, Aijun Duan, Pei Wu, Xilong Wang

Physical Sciences and Engineering

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

10 Scopus citations

Abstract

A series of lanthanum (La)/gallium (Ga)-containing Zn/ZSM-5 catalysts with different metal contents were synthesized by the post-synthetic method. All prepared catalysts were well characterized by X-ray diffraction, pyridine-Fourier transform infrared spectroscopy, NH3-temperature-programmed desorption, H2-temperature-programmed desorption, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. The effect of La/Ga addition on the isomerization/aromatization properties of Zn/ZSM-5 was studied, and the synthesis mechanism was proposed. The catalytic activities reach the maximum in 1% LaZn/ZSM-5 catalyst, and the isomerization/aromatization performance decreased with further increase of La content. Besides, La species is more advantageous than Ga species in olefin reduction and upgrading of light gasoline under the same catalyst composition and process conditions. It was believed that the additions of La and Ga to Zn/ZSM-5 could adjust the acidity of the catalysts and improve the dispersion of zinc species, increase the amounts of [Zn(OH)]+ species, and strengthen the interaction between Zn species and support, thus enhancing the isomerization/aromatization activities and prolonging the service life of the catalysts. The suitable L/B value and the highly dispersed Zn active phases were favorable to the high activities of LaZn/ZSM-5 and GaZn/ZSM-5 catalysts in isomerization/aromatization of FCC light gasoline.

Original language	English (US)
Journal	Industrial & Engineering Chemistry Research
DOIs	https://doi.org/10.1021/acs.iecr.2c01104
State	Published - Jun 28 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-07-01
Acknowledgements: The authors acknowledge the financial supports from the CNPC Key Research Project (2018E-03), the National Natural Science Foundation of China (no. 21878330), and the King Abdullah University of Science and Technology (KAUST).

ASJC Scopus subject areas

General Chemical Engineering
General Chemistry
Industrial and Manufacturing Engineering

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10.1021/acs.iecr.2c01104

https://repository.kaust.edu.sa/bitstream/10754/679528/1/Lanthanumgallium%20modified%20ZnZSM-5%20zeolite%20for%20efficient%20isomerizationaromatization%20of%20FCC%20light%20gasoline.pdf

Cite this

@article{eb98ae81e6204e7c927dcd5634ca5146,

title = "Lanthanum/Gallium-Modified Zn/ZSM-5 Zeolite for Efficient Isomerization/Aromatization of FCC Light Gasoline",

abstract = "A series of lanthanum (La)/gallium (Ga)-containing Zn/ZSM-5 catalysts with different metal contents were synthesized by the post-synthetic method. All prepared catalysts were well characterized by X-ray diffraction, pyridine-Fourier transform infrared spectroscopy, NH3-temperature-programmed desorption, H2-temperature-programmed desorption, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. The effect of La/Ga addition on the isomerization/aromatization properties of Zn/ZSM-5 was studied, and the synthesis mechanism was proposed. The catalytic activities reach the maximum in 1% LaZn/ZSM-5 catalyst, and the isomerization/aromatization performance decreased with further increase of La content. Besides, La species is more advantageous than Ga species in olefin reduction and upgrading of light gasoline under the same catalyst composition and process conditions. It was believed that the additions of La and Ga to Zn/ZSM-5 could adjust the acidity of the catalysts and improve the dispersion of zinc species, increase the amounts of [Zn(OH)]+ species, and strengthen the interaction between Zn species and support, thus enhancing the isomerization/aromatization activities and prolonging the service life of the catalysts. The suitable L/B value and the highly dispersed Zn active phases were favorable to the high activities of LaZn/ZSM-5 and GaZn/ZSM-5 catalysts in isomerization/aromatization of FCC light gasoline.",

author = "Shaotong Song and Tianshu Li and Yana Ju and Yang Li and Zhongwu Lv and Peng Zheng and Aijun Duan and Pei Wu and Xilong Wang",

note = "KAUST Repository Item: Exported on 2022-07-01 Acknowledgements: The authors acknowledge the financial supports from the CNPC Key Research Project (2018E-03), the National Natural Science Foundation of China (no. 21878330), and the King Abdullah University of Science and Technology (KAUST).",

year = "2022",

month = jun,

day = "28",

doi = "10.1021/acs.iecr.2c01104",

language = "English (US)",

journal = "Industrial & Engineering Chemistry Research",

issn = "0888-5885",

publisher = "American Chemical Society",

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T1 - Lanthanum/Gallium-Modified Zn/ZSM-5 Zeolite for Efficient Isomerization/Aromatization of FCC Light Gasoline

AU - Song, Shaotong

AU - Li, Tianshu

AU - Ju, Yana

AU - Li, Yang

AU - Lv, Zhongwu

AU - Zheng, Peng

AU - Duan, Aijun

AU - Wu, Pei

AU - Wang, Xilong

N1 - KAUST Repository Item: Exported on 2022-07-01 Acknowledgements: The authors acknowledge the financial supports from the CNPC Key Research Project (2018E-03), the National Natural Science Foundation of China (no. 21878330), and the King Abdullah University of Science and Technology (KAUST).

PY - 2022/6/28

Y1 - 2022/6/28

N2 - A series of lanthanum (La)/gallium (Ga)-containing Zn/ZSM-5 catalysts with different metal contents were synthesized by the post-synthetic method. All prepared catalysts were well characterized by X-ray diffraction, pyridine-Fourier transform infrared spectroscopy, NH3-temperature-programmed desorption, H2-temperature-programmed desorption, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. The effect of La/Ga addition on the isomerization/aromatization properties of Zn/ZSM-5 was studied, and the synthesis mechanism was proposed. The catalytic activities reach the maximum in 1% LaZn/ZSM-5 catalyst, and the isomerization/aromatization performance decreased with further increase of La content. Besides, La species is more advantageous than Ga species in olefin reduction and upgrading of light gasoline under the same catalyst composition and process conditions. It was believed that the additions of La and Ga to Zn/ZSM-5 could adjust the acidity of the catalysts and improve the dispersion of zinc species, increase the amounts of [Zn(OH)]+ species, and strengthen the interaction between Zn species and support, thus enhancing the isomerization/aromatization activities and prolonging the service life of the catalysts. The suitable L/B value and the highly dispersed Zn active phases were favorable to the high activities of LaZn/ZSM-5 and GaZn/ZSM-5 catalysts in isomerization/aromatization of FCC light gasoline.

AB - A series of lanthanum (La)/gallium (Ga)-containing Zn/ZSM-5 catalysts with different metal contents were synthesized by the post-synthetic method. All prepared catalysts were well characterized by X-ray diffraction, pyridine-Fourier transform infrared spectroscopy, NH3-temperature-programmed desorption, H2-temperature-programmed desorption, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. The effect of La/Ga addition on the isomerization/aromatization properties of Zn/ZSM-5 was studied, and the synthesis mechanism was proposed. The catalytic activities reach the maximum in 1% LaZn/ZSM-5 catalyst, and the isomerization/aromatization performance decreased with further increase of La content. Besides, La species is more advantageous than Ga species in olefin reduction and upgrading of light gasoline under the same catalyst composition and process conditions. It was believed that the additions of La and Ga to Zn/ZSM-5 could adjust the acidity of the catalysts and improve the dispersion of zinc species, increase the amounts of [Zn(OH)]+ species, and strengthen the interaction between Zn species and support, thus enhancing the isomerization/aromatization activities and prolonging the service life of the catalysts. The suitable L/B value and the highly dispersed Zn active phases were favorable to the high activities of LaZn/ZSM-5 and GaZn/ZSM-5 catalysts in isomerization/aromatization of FCC light gasoline.

UR - http://hdl.handle.net/10754/679528

UR - https://pubs.acs.org/doi/10.1021/acs.iecr.2c01104

U2 - 10.1021/acs.iecr.2c01104

DO - 10.1021/acs.iecr.2c01104

M3 - Article

SN - 0888-5885

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

ER -

Lanthanum/Gallium-Modified Zn/ZSM-5 Zeolite for Efficient Isomerization/Aromatization of FCC Light Gasoline

Abstract

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