Effect of Metal-Containing Anions on the Catalytic Properties of Imidazolium Derivatives Immobilized on Silochrome in Oxidative Desulfurization

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2023-06-17 DOI:10.1134/S2070050423020101

I. G. Tarkhanova, A. G. Ali-Zade, A. K. Buryak, V. M. Zelikman

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Abstract

A comparative analysis is performed for the properties of two Fenton-type catalysts in the oxidation of sulfur-containing compounds with hydrogen peroxide and the desulfurization of crude oil. The catalysts are based on Cu(I) and Fe(III), and Mo(VI) and W(VI) polyoxometalates. Heterogeneous samples are imidazolium salts chemically immobilized on surfaces of silochrome and contain the iron and copper chloride complexes or phosphomolybdic and phosphotungstic acid anions. Thiophene (T), dibenzothiophene (DBT), methylphenyl sulfide (MPS), and a diesel fraction with an initial amount of sulfur of 1080 ppm are used as model substrates. It is found that the order of reactivity of thiophene substrates depends on the nature of metal-containing anions: thiophene > DBT on the Cu and Fe catalysts and DBT > thiophene on the polyoxometalate catalysts. This effect is explained using literature data. The catalyst based on phosphotungstic acid allows desulfurization of the diesel fraction of oil to amounts of sulfur of < 10 ppm, which meets today’s environmental standards.

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含金属阴离子对硅铬固载咪唑衍生物氧化脱硫性能的影响

比较分析了两种fenton型催化剂在含硫化合物过氧化氧化和原油脱硫中的性能。催化剂是基于Cu(I)和Fe(III)， Mo(VI)和W(VI)多金属氧酸盐。非均相样品是化学固定在硅铬表面的咪唑盐，含有氯化铁和氯化铜配合物或磷钼酸和磷钨酸阴离子。噻吩(T)、二苯并噻吩(DBT)、甲基苯基硫醚(MPS)和初始硫含量为1080 ppm的柴油馏分作为模型底物。研究发现，噻吩底物的反应性顺序取决于含金属阴离子的性质:噻吩;Cu和Fe催化剂上的DBT和DBT >多金属酸氧催化剂上的噻吩。使用文献数据解释了这种效应。基于磷钨酸的催化剂允许将柴油馏分油脱硫至一定量的硫;10 ppm，符合当今的环境标准。

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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.