铬/锌-铍金属沸石复合材料中的铬对其在丙烷脱氢过程中的酸碱特性和催化性能的影响

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
S. M. Orlyk, N. V. Vlasenko, V. I. Chedryk, A. Y. Kapran, S. Dzwigaj
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引用次数: 0

摘要

根据准平衡 NH3 和 CO2 热脱附数据,确定了不同 Si/Al 比的含锌 BEA 沸石组成中的铬对其在有或无 CO2 的丙烷脱氢制丙烯过程中的酸碱特性和催化性能的影响。发现基于初始 Cr/ZnAlBEA 沸石(Si/Al = 17)的催化剂对丙烷转化率和丙烯选择性有积极影响。与不含二氧化碳的丙烷脱氢工艺相比,在有二氧化碳参与的丙烷脱氢工艺中,丙烷转化率更高,但丙烯选择性较低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Influence of Chromium in Cr/Zn-Bea Metal–Zeolite Composites on Their Acid–Base Characteristics and Catalytic Properties in the Processes of Propane Dehydrogenation

Influence of Chromium in Cr/Zn-Bea Metal–Zeolite Composites on Their Acid–Base Characteristics and Catalytic Properties in the Processes of Propane Dehydrogenation

According to the quasi-equilibrium NH3 and CO2 thermal desorption data, the effect of chromium in the composition of zinc-containing BEA zeolites with different Si/Al ratios on their acid–base characteristics and catalytic properties in the process of dehydrogenation of propane to propene with or without CO2 has been determined. A positive effect on the propane conversion and the propene selectivity is found for a catalyst based on the initial Cr/ZnAlBEA zeolite (Si/Al = 17). Higher propane conversion is achieved in the process of propane dehydrogenation with the participation of CO2 in the presence of Cr/Zn-BEA catalysts, but with lower propene selectivity when compared to the propane dehydrogenation process without CO2.

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来源期刊
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.
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