Pore-size regulated zsm-5 zeolite for the synthesis of para-dia lkylbenzenes
Source
The Arabian Journal for Science and Engineering. Section C, Theme issues
Issue
Vol. 24, Issue 1C (30 Jun. 1999), pp.49-56, 8 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
1999-06-30
Country of Publication
Saudi Arabia
No. of Pages
8
Main Subjects
Abstract EN
-The dialkylbenzenes can be synthesized by alkylating monoalkylbenzene with an alkylating agent such as an olefin or alcohol over a Friedel-Craft or zeolite catalyst.
On all these catalysts, the dialkylbenzenes mixture produced consists of a thermodynamic equilibrium composition of ortho-, meta-, and para-isomers.
Among the various dialkylbenzenes, the para-isomers such as p-cymene,p-ethyltoluene,p-xylene,p-diethylbenzene are industrially important.
These chemicals are sources for various monomers.
Hence it is of significance to enhance the concentration of the para-isomer in the dialkylbenzenes mixture during alkylation of monoalkylbenzene.
Several techniques have been reported in the literature to modify the diffusion characteristics of the zeolite.
One of the techniques most drawing the attention of researchers is pore size regulation by chemical vapor deposition of tetraethyl orthosilicate.
This modification of the zeolite creates a barrier at the entrance to the zeolite pores, which dramatically enhances the diffusional resistance to the passage of bulkier molecules.
The applications of pore-size regulated zeolite for enhancing para-isomer concentration during ethylation of ethylbenzene and toluene are discussed in this pap
American Psychological Association (APA)
Yajnavalkya, Bhat S.. 1999. Pore-size regulated zsm-5 zeolite for the synthesis of para-dia lkylbenzenes. The Arabian Journal for Science and Engineering. Section C, Theme issues،Vol. 24, no. 1C, pp.49-56.
https://search.emarefa.net/detail/BIM-389744
Modern Language Association (MLA)
Yajnavalkya, Bhat S.. Pore-size regulated zsm-5 zeolite for the synthesis of para-dia lkylbenzenes. The Arabian Journal for Science and Engineering. Section C, Theme issues Vol. 24, no. 1C (Jun. 1999), pp.49-56.
https://search.emarefa.net/detail/BIM-389744
American Medical Association (AMA)
Yajnavalkya, Bhat S.. Pore-size regulated zsm-5 zeolite for the synthesis of para-dia lkylbenzenes. The Arabian Journal for Science and Engineering. Section C, Theme issues. 1999. Vol. 24, no. 1C, pp.49-56.
https://search.emarefa.net/detail/BIM-389744
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 65
Record ID
BIM-389744