The Effect of the Support Grain Size on the Catalytic Performance of the CuY Catalyst

WANG Yuchun; LIU Zhaorong; TAN Chao; SUN Hong; LI Zhong

doi:10.6054/j.jscnun.2020058

Journal of South China Normal University (Natural Science Edition) > 2020 > 52(4): 37-42. > DOI: 10.6054/j.jscnun.2020058

WANG Yuchun, LIU Zhaorong, TAN Chao, SUN Hong, LI Zhong. The Effect of the Support Grain Size on the Catalytic Performance of the CuY Catalyst[J]. Journal of South China Normal University (Natural Science Edition), 2020, 52(4): 37-42. DOI: 10.6054/j.jscnun.2020058

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The Effect of the Support Grain Size on the Catalytic Performance of the CuY Catalyst

1.
Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China
2.
Sichuan Universities Key Laboratory of Process Analysis and Control//College of Chemistry and Chemical Engineering, Yibin University, Yibin 644000, China
3.
MOE and Shanxi Provincial Key Laboratory of Coal Science and Technology//Coal Chemical Research Institute, Taiyuan University of Technology, Taiyuan 030024, China

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Received Date: November 27, 2019
Available Online: September 03, 2020

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Abstract

Abstract

The NaY zeolite with different sizes was synthesized using sodium aluminate and silica sol as the main raw materials without seed gel. The NH₄Y zeolite was prepared with ion-exchange of NH₄NO₃ from the as-prepared NaY zeolite and used as support to prepare the CuY catalyst through vapor impregnation. The CuY catalyst was characterized with XRD, TEM, BET and XPS and used to catalyze the oxidation carbonylation of methanol to dimethy carbonate. The effect of the support size on the catalytic activity was investigated. The results showed that the grain size of support affected the pore structure, especially the formation of mesopore, and the catalytic activity in turn. When the grain size was 500 nm, the intergranular pore is conducive to forming dimethy carbonate and the CuY catalyst exhibited an excellent catalytic activity with the space time yield based on methanol being 273.1 mg/(g·h), percentage of methanol conversion being 6.5% and selectivity of DMC being 72.1%.
- the grain size of support,
- oxidation carbonylation of methanol,
- dimethy carbonate,
- CuY catalyst

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References (16)

References

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