Volume 7, Issue 8 e202103425
Full Paper

Modification of Beta Zeolites and Their Application in Catalytic Oxidation of Propane

Guiyu Jiang

Guiyu Jiang

State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming Key Laboratory of Special Metallurgy, Kunming University of Science and Technology, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, 650093 China

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Heng Yan

Heng Yan

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming Key Laboratory of Special Metallurgy, Kunming University of Science and Technology, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, 650093 China

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Yingjie Xu

Yingjie Xu

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming Key Laboratory of Special Metallurgy, Kunming University of Science and Technology, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, 650093 China

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Wuchen Cai

Wuchen Cai

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming Key Laboratory of Special Metallurgy, Kunming University of Science and Technology, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, 650093 China

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Prof. Dr. Hongying Xia

Corresponding Author

Prof. Dr. Hongying Xia

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming Key Laboratory of Special Metallurgy, Kunming University of Science and Technology, Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming, 650093 China

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First published: 22 February 2022
Citations: 2

Graphical Abstract

In this work, we synthesized a novel propane catalyst Ni−Zn−H-Beta zeolites catalyst via simply exchanging liquid-phase ion exchange and roasting high temperature. After modification by hydrochloric acid, nickel nitrate and zinc nitrate, the specific surface area, pore size and pore volume of Ni−Zn−H-Beta zeolites catalyst increased, which greatly improved the catalytic degradation effect of propane. The effect of conventional calcined catalyst is better than that of microwave calcined catalyst. The obtained catalyst showed effect and long-term stability of propane.

Abstract

In this manuscript, Beta zeolites are modified by liquid phase ion exchange method and high temperature roasting method to achieve the effect of catalytic degradation of propane. After modification by hydrochloric acid, nickel nitrate and zinc nitrate, the specific surface area, pore size and pore volume of Ni−Zn−H-Beta zeolites catalyst increased, which greatly improved the catalytic degradation effect of propane. By high temperature roasting, the effect of conventional calcined catalyst is better than that of microwave calcined catalyst. When the gas composition is air and 1 % propane, the gas flow is 100 ml/min, the reaction temperature is 300 °C, the optimum preparation conditions of the catalyst are Ni: Zn=2 : 1, HCl pickling temperature is 70 °C, conventional roasting temperature is 500 °C, and the holding time is 60 min, the catalytic activity of Ni−Zn−H-Beta zeolites is the best, and the degradation rate of propane is 79.6 %.

Conflict of interest

The authors declare no conflict of interest