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Regeneration of Zeolite Catalyst for Isobutane Alkylation with Olefins

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Abstract

The reductive regeneration of a PdCaLaHY zeolite catalyst for isobutane alkylation with butylenes has been studied for the process carried out in the reaction–reductive regeneration–reaction mode. It has been found that the composition of regeneration products was identical to the alkylate composition, suggesting the proceeding of mild hydrocracking of hydrocarbon deposits on the catalyst surface. The optimal maximum temperature of catalyst regeneration has been determined using the TGA/DSC method. The catalyst regeneration conditions found to ensure almost complete recovery of the initial activity of the catalyst are as follows: a temperature up to 320°C, pressure of 1.2 MPa, and a hydrogen space velocity of 1000 h−1.

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ACKNOWLEDGMENTS

This work was supported by the Ministry of Education and Science of the Russian Federation, Agreement no. 14.607.21.0170 (unique project identifier RFMEFI60717X0170).

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Authors and Affiliations

  1. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, 119991, Russia

    I. M. Gerzeliev, V. A. Temnikova, A. L. Maksimov & S. N. Khadzhiev

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  1. I. M. Gerzeliev
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  2. V. A. Temnikova
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  3. A. L. Maksimov
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  4. S. N. Khadzhiev
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Corresponding author

Correspondence to I. M. Gerzeliev.

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Translated by S. Lebedev

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Gerzeliev, I.M., Temnikova, V.A., Maksimov, A.L. et al. Regeneration of Zeolite Catalyst for Isobutane Alkylation with Olefins. Pet. Chem. 58, 827–832 (2018). https://doi.org/10.1134/S0965544118100067

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  • DOI: https://doi.org/10.1134/S0965544118100067

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