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Your search keyword '"Zhang, Chengxi"' showing total 3 results
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3 results on '"Zhang, Chengxi"'

1. Effect of Particle Size of Al2O3 Binders on Acidity and Isobutane–Butene Alkylation Performance of Zeolite Y-Based Catalysts

Author

Yibin Luo, Zhang Chengxi, Xingtian Shu, Shunli Zhou, and Li Yongxiang

Subjects
Materials science, General Chemical Engineering, 02 engineering and technology, General Chemistry, Alkylation, 021001 nanoscience & nanotechnology, Butene, Industrial and Manufacturing Engineering, Catalysis, chemistry.chemical_compound, 020401 chemical engineering, chemistry, Chemical engineering, Isobutane, Particle, Particle size, 0204 chemical engineering, 0210 nano-technology, Zeolite
Abstract

Al2O3 binders of various particle sizes were used to formulate a zeolite Y-based catalyst, and the acidity of catalysts increases with decreasing Al2O3 particle size. Characterization results showe...

Published
2020

3. A facile way to improve zeolite Y-based catalysts' properties and performance in the isobutane-butene alkylation reaction

Author

Zhang Chengxi, Xingtian Shu, Yibin Luo, Shunli Zhou, Li Yongxiang, and Bingzhang Shao

Subjects
Materials science, General Chemical Engineering, General Chemistry, Alkylation, Butene, Catalysis, chemistry.chemical_compound, Chemical engineering, chemistry, Phase (matter), Isobutane, Mesoporous material, Selectivity, Zeolite
Abstract

Different amounts of SiO2 were added to the Al2O3 binders to investigate the binder effect on zeolite Y-based catalysts. The added SiO2 improved the mesopore volume and acidity of the catalysts. Characterization results showed that the catalysts' acid amount increased with increasing the SiO2 amount in the binder, which achieved maximum value when 12% SiO2 was added to the binder. The doped SiO2 in Al2O3 binders improved the Al2O3 phase transformation temperature, which is crucial for Al species to break out of the phase energy and migrate into the zeolite. The lifetime of catalyst Y-Al2O3-12SiO2 is 3.7 times higher than that of Y-Al2O3-0SiO2, and the selectivity of the target products simultaneously improved by 7 percentage point. This work should bring some inspiration to the design and application of zeolite-based catalysts.

Published
2020

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