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Synthesis of a Catalyst for Isobutane/Butylenes Alkylation Promising for Industrial Application

Gerzeliev, I. M. / Temnikova, V. A. / Saitov, Z. A. / Asylbaev, D. F. / Baskhanova, M. N.

A comparative study of two methods of ion exchange of a NaX zeolite molded with a binder is performed. The first method (I) consists in the successive treatment of the zeolite with solutions of calcium, lanthanum, and ammonium nitrates at 80°C under stirring over granules with the use of intermediate dryings and calcinations after each ion exchange. The second method (II) involves the successive hydrothermal treatment of the zeolite with the solutions of the salts at 140°C with intermediate rinsings. It is found that an almost complete replacement of sodium cations in the zeolite lattice (no more than 0.6 wt % of residual Na₂O) requires a threefold ion exchange by method II and a fourfold ion exchange by method I. Comparing the physicochemical and catalytic properties of the obtained samples shows the advantage of ion exchange by method II due to preservation of the initial structural characteristics of the zeolite and, hence, higher concentration and strength of acid sites.

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Synthesis of a Catalyst for Isobutane/Butylenes Alkylation Promising for Industrial Application

Gerzeliev, I. M. / Temnikova, V. A. / Saitov, Z. A. / Asylbaev, D. F. / Baskhanova, M. N.

A comparative study of two methods of ion exchange of a NaX zeolite molded with a binder is performed. The first method (I) consists in the successive treatment of the zeolite with solutions of calcium, lanthanum, and ammonium nitrates at 80°C under stirring over granules with the use of intermediate dryings and calcinations after each ion exchange. The second method (II) involves the successive hydrothermal treatment of the zeolite with the solutions of the salts at 140°C with intermediate rinsings. It is found that an almost complete replacement of sodium cations in the zeolite lattice (no more than 0.6 wt % of residual Na₂O) requires a threefold ion exchange by method II and a fourfold ion exchange by method I. Comparing the physicochemical and catalytic properties of the obtained samples shows the advantage of ion exchange by method II due to preservation of the initial structural characteristics of the zeolite and, hence, higher concentration and strength of acid sites.

Synthesis of a Catalyst for Isobutane/Butylenes Alkylation Promising for Industrial Application

Gerzeliev, I. M. / Temnikova, V. A. / Saitov, Z. A. / Asylbaev, D. F. / Baskhanova, M. N.

A comparative study of two methods of ion exchange of a NaX zeolite molded with a binder is performed. The first method (I) consists in the successive treatment of the zeolite with solutions of calcium, lanthanum, and ammonium nitrates at 80°C under stirring over granules with the use of intermediate dryings and calcinations after each ion exchange. The second method (II) involves the successive hydrothermal treatment of the zeolite with the solutions of the salts at 140°C with intermediate rinsings. It is found that an almost complete replacement of sodium cations in the zeolite lattice (no more than 0.6 wt % of residual Na₂O) requires a threefold ion exchange by method II and a fourfold ion exchange by method I. Comparing the physicochemical and catalytic properties of the obtained samples shows the advantage of ion exchange by method II due to preservation of the initial structural characteristics of the zeolite and, hence, higher concentration and strength of acid sites.

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Title:

Synthesis of a Catalyst for Isobutane/Butylenes Alkylation Promising for Industrial Application

Additional title:

Pet. Chem.

Contributors:

Gerzeliev, I. M. (author) / Temnikova, V. A. (author) / Saitov, Z. A. (author) / Asylbaev, D. F. (author) / Baskhanova, M. N. (author)

Published in:

Petroleum Chemistry ; 60 ; 1170-1175

Publication date:

2020-10-01

Size:

6 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544120100035

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

catalyst synthesis unit , ion exchange , NaX zeolite , heterogeneous alkylation catalyst , alkylation of isobutane with butylenes Chemistry , Industrial Chemistry/Chemical Engineering , Chemistry and Materials Science

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