在 PtSn/Al2O3 催化剂作用下从甲基环己烷制取氢气和甲苯的动力学研究

IF 1.3 4区 化学 Q4 CHEMISTRY, PHYSICAL Kinetics and Catalysis Pub Date : 2024-08-15 DOI:10.1134/S0023158424601426
A. D. Lozhkin, L. D. Iskhakova, F. O. Milovich, E. A. Katsman, L. G. Bruk
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摘要

摘要 通过 X 射线衍射 (XRD)分析、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 对用氢铂酸和氯化锡水溶液依次浸渍γ-氧化铝合成的 Pt(1.5%)Sn(0.25%)/Al2O3 催化剂进行了表征。研究了在常压等温模式下管式流动反应器中将甲基环己烷脱氢为甲苯和氢气的动力学规律,同时改变了反应物浓度、接触时间和温度。研究建立了一个动力学经验数学模型,其中包括双功能活性位点的三种吸附形式。该模型充分描述了正向和反向反应路线的测试数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Kinetics of Hydrogen and Toluene Production from Methylcyclohexane in the Presence of a PtSn/Al2O3 Catalyst

A Pt(1.5%)Sn(0.25%)/Al2O3 catalyst synthesized by the sequential impregnation of γ-alumina with aqueous solutions of hydroplatinic acid and tin chloride has been characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The kinetic laws governing methylcyclohexane dehydrogenation to toluene and hydrogen in a tubular flow reactor in the isothermal mode at atmospheric pressure have been studied, while varying the reactant concentrations, contact time, and temperature. An empirical mathematical model of kinetics, which includes three adsorption forms of a bifunctional active site, has been developed. The model adequately describes the test data for the forward and reverse reaction routes.

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来源期刊
Kinetics and Catalysis
Kinetics and Catalysis 化学-物理化学
CiteScore
2.10
自引率
27.30%
发文量
64
审稿时长
6-12 weeks
期刊介绍: Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.
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