Examination of catalyst for α-metylstyrene oligomerization “Phosphoric Acid on Sibunit” under conditions of laboratory and industrial application

Examination of catalyst for α-metylstyrene oligomerization “Phosphoric Acid on Sibunit”... A catalyst obtained by impregnation of a mesoporous carbon carrier sibunit with orthophosphoric acid is examined under conditions of pilot plant manufacturing for producing α-methylstyrene dimer. The produced catalyzate (the product obtained with catalysis, 300 ton) containing ca. 70% of targeted 2,4-diphenyl-4-methyl-1-penetene at 95% conversion was after filtration used for control of molecular mass at producing polystyrene of different sorts. Consumption of the catalyst under optimal conditions of exploitation of the installation was ca. 1.5 kg per 1 ton of dimer at temperature ca. 50°C and volume rate ∼ 0.5 h−1. Content of 2,4-diphenyl-4-methyl-1-pentene in the dimer can be elevated to 80% by significant decreasing conversion (∼50%) and by application of solvents. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Examination of catalyst for α-metylstyrene oligomerization “Phosphoric Acid on Sibunit” under conditions of laboratory and industrial application

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Publisher
Springer Journals
Copyright
Copyright © 2008 by MAIK Nauka
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Chemistry/Food Science, general
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427208030397
Publisher site
See Article on Publisher Site

Abstract

A catalyst obtained by impregnation of a mesoporous carbon carrier sibunit with orthophosphoric acid is examined under conditions of pilot plant manufacturing for producing α-methylstyrene dimer. The produced catalyzate (the product obtained with catalysis, 300 ton) containing ca. 70% of targeted 2,4-diphenyl-4-methyl-1-penetene at 95% conversion was after filtration used for control of molecular mass at producing polystyrene of different sorts. Consumption of the catalyst under optimal conditions of exploitation of the installation was ca. 1.5 kg per 1 ton of dimer at temperature ca. 50°C and volume rate ∼ 0.5 h−1. Content of 2,4-diphenyl-4-methyl-1-pentene in the dimer can be elevated to 80% by significant decreasing conversion (∼50%) and by application of solvents.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: May 9, 2008

References

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