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Industrial aluminum hydroxides. Part 2. Application of aluminum hydroxides in acid catalysis and influence of peptizing agent

https://doi.org/10.18412/1816-0387-2026-1-3-12

Abstract

The development of catalysts requires a large number of fundamental and empirical studies. If the objective of the work is industrial implementation, then the tasks include studying the properties of industrial large-tonnage raw materials and the work is complicated by the need to adapt it to the technology being developed. The paper compares the structural characteristics and elemental composition of a number of industrial aluminum hydroxides with the physical and chemical characteristics of metastable aluminum oxides obtained from them. The performance of aluminum oxide catalysts was studied in the reaction of skeletal isomerization of n-butylenes in laboratory stands. It has been established that impurity ions have a greater effect on the catalytic performance of samples, unlike textural characteristics. The effect of peptizers (orthophosphoric and citric acids) on the properties of acid-type catalysts has been studied for the first time. It has been shown for the first time that despite the increase in the concentration of acid sites on the surface of aluminum oxide obtained using orthophosphoric acid, its catalytic activity is several times lower than that of a catalyst pre-peptized with citric acid and characterized by a lower concentration of acid sites.

About the Authors

A. V. Boretskaya
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan
Russian Federation


A. B. Kutushev
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan
Russian Federation


D. D. Mukhametzyanov
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan
Russian Federation


S. R. Egorova
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan
Russian Federation


A. A. Lamberov
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan
Russian Federation


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Review

For citations:


Boretskaya A.V., Kutushev A.B., Mukhametzyanov D.D., Egorova S.R., Lamberov A.A. Industrial aluminum hydroxides. Part 2. Application of aluminum hydroxides in acid catalysis and influence of peptizing agent. Kataliz v promyshlennosti. 2026;26(1):3-12. (In Russ.) https://doi.org/10.18412/1816-0387-2026-1-3-12

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