Phenol and Tetralin Co-Conversion Regularities under Catalytic Cracking Conditions

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2023-06-17 DOI:10.1134/S2070050423020095

P. V. Lipin, V. P. Doronin, O. V. Potapenko, T. P. Sorokina

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Abstract

The effect of an oxygen-containing compound on the cracking of an aromatic hydrocarbon is studied using the example of a model phenol–tetralin mixture. An analysis of the temperature dependences of the cracking rate constant of tetralin and tetralin in a mixture with phenol indicates that tetralin cracking is ihhibited during its co-conversion with an oxygen-containing compound due to the greater adsorption capacity of phenol on the catalyst’s surface. It is found that phenol in the model mixture changes the composition of liquid products, especially at low cracking temperatures. The effect of water on the conversion of a phenol-tetralin mixture is studied. It is established that water in the model feedstock reduces the inhibition of the cracking reaction of an aromatic hydrocarbon by an oxygen-containing compound. Based on the results of catalytic reactions, it is determined that when water is added, the level of the overall conversion of the mixture and the conversion of tetralin increase regardless of temperature. No appreciable qualitative differences between the distributions of cracking products in model mixtures with and without water have been revealed.

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催化裂化条件下苯酚与四氢萘共转化规律

以苯酚-四氢化萘模型为例，研究了含氧化合物对芳烃裂解的影响。对四氢化萘和四氢化萘在苯酚混合物中裂解速率常数的温度依赖性分析表明，由于苯酚在催化剂表面的吸附能力更大，四氢化萘在与含氧化合物共转化过程中裂解受到抑制。研究发现，模型混合物中的苯酚改变了液体产物的组成，特别是在低裂解温度下。研究了水对苯酚-四氢化萘混合物转化的影响。模型原料中的水降低了含氧化合物对芳烃裂解反应的抑制作用。根据催化反应的结果，确定当加水时，无论温度如何，混合物的总转化率和四氢化萘的转化率都增加。在有水和无水的模型混合物中，开裂产物的分布没有明显的质量差异。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.