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Kinetics of Cyclohexanol Dehydrogenation for Cu-Containing Supported Catalysts with the Active Component in Different Forms
Petroleum Chemistry ( IF 1.4 ) Pub Date : 2021-04-27 , DOI: 10.1134/s0965544121050066
V. I. Vanchurin , O. Yu. Salnikova , O. I. Karachenko

Abstract

The study investigates the properties of industrial-scale supported copper-containing catalysts, H3-11 and MAK-K, in the dehydrogenation of cyclohexanol. These catalysts differ in the mechanism employed for the active component’s immobilization on a silica support: physically bound in the former case and chemically bound in the latter. Within set ranges of temperatures and space velocities (200–250°C, 0.5–2.0 h–1), data were obtained on the conversion rates and selectivity values provided by both catalysts, as well as on corresponding variations in by-product compositions. The trends for both catalysts were found to be similar. The kinetic data were processed using an equation previously suggested for a mixed copper-magnesium catalyst. This equation was confirmed to be able to describe kinetic experiments on the catalysts under study, regardless of the preparation method of a copper-containing catalyst and of the binding mechanism used for the supported active component. Macrokinetic properties were calculated for an industrial-scale reaction mixture and catalyst grain size.



中文翻译:

不同形式活性组分的含铜负载型催化剂的环己醇脱氢动力学

摘要

该研究调查了工业规模的负载型含铜催化剂H3-11和MAK-K在环己醇脱氢中的性能。这些催化剂在活性成分固定在二氧化硅载体上所用的机理不同:在前一种情况下是物理结合的,在后一种情况下是化学结合的。在设定的温度和空速范围内(200–250°C,0.5–2.0 h –1),获得了两种催化剂提供的转化率和选择性值以及副产物组成的相应变化的数据。发现两种催化剂的趋势相似。使用先前建议的用于混合铜-镁催化剂的方程式处理动力学数据。证实了该方程能够描述所研究的催化剂的动力学实验,而与含铜催化剂的制备方法和用于担载的活性组分的结合机理无关。计算了工业规模反应混合物和催化剂粒度的宏观动力学性质。

更新日期:2021-04-28
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