Characteristics of integral plasma-fluidized bed and preparation of Mo-based catalysts for sulfur-resistant methanation

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-10-21 DOI:10.1007/s11144-024-02735-6

Baowei Wang, Jiangzhou Kong, Xiaoyan Li

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Abstract

Integral plasma fluidized bed reactors were designed for catalyst preparation. Fluidization characteristics and discharge performance were investigated. Results indicated that a bed height of 30 mm and a gas velocity of 0.10–0.18 m/s were obtained a better fluidization effect. Input power 8 W could make the discharge more stable in the double dielectric barrier discharge (DDBD) fluidized bed reactor. The preparation of 20% Mo/Al₂O₃ sulfur-resistant methanation catalysts was treated with DDBD fluidized bed reactor. Plasma time treatment was investigated. The highest CO conversion was obtained for a plasma treatment time of 30 min. The highest methane yield was obtained for a 60 min catalyst. The catalyst components were found to be uniformly dispersed in the form of ammonium molybdate on an Al₂O₃ carrier based on N₂ physisorption-desorption, XRD, TGA, Raman, TEM and TPR characterization. This suggests that the DBD fluidized bed may provide a novel route for catalyst preparation.

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.