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Title: Shape selectivity and carbon formation in zeolites

Abstract

The reaction of a feed of equal weights of n-hexane (NC6), 3-methylpentane (3MP), 2,3-dimethylbutane, benzene, and toluene at 427/sup 0/C, 200 psig, and a 3:1 hydrogen-hydrocarbon ratio was studied on Y zeolites, L zeolites, mordenites, ferrierite, and a large number of zeolites of the ZSM series. The coke yields, which varied from approx. 0.02 g to approx. 2.0 g per 100 g paraffin converted, were directly related to the zeolite shape selectivity as measured by the ratio of the first-order rate constants of the disappearance of NC6 to 3MP. The effects of composition and crystal size of the zeolites were minor compared with the pore-structure effect, as was found in previous studies.

Authors:
;
Publication Date:
Research Org.:
Mobil Res. Dev. Corp.
OSTI Identifier:
6922943
Alternate Identifier(s):
OSTI ID: 6922943
Resource Type:
Journal Article
Journal Name:
J. Catal.; (United States)
Additional Journal Information:
Journal Volume: 56:1
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HYDROGENATION; CATALYSTS; ZEOLITES; CATALYTIC EFFECTS; COMPARATIVE EVALUATIONS; BENZENE; BUTANE; CHEMICAL COMPOSITION; CHEMICAL FEEDSTOCKS; CRYSTAL STRUCTURE; EXPERIMENTAL DATA; HEXANE; HIGH TEMPERATURE; MEDIUM PRESSURE; MORDENITE; PENTANE; REACTION KINETICS; TOLUENE; YIELDS; ALKANES; AROMATICS; CHEMICAL REACTIONS; DATA; HYDROCARBONS; INFORMATION; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; KINETICS; MATERIALS; MINERALS; NUMERICAL DATA; ORGANIC COMPOUNDS; SILICATE MINERALS 400201* -- Chemical & Physicochemical Properties; 400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)

Citation Formats

Rollmann, L.D., and Walsh, D.E. Shape selectivity and carbon formation in zeolites. United States: N. p., 1979. Web. doi:10.1016/0021-9517(79)90099-X.
Rollmann, L.D., & Walsh, D.E. Shape selectivity and carbon formation in zeolites. United States. doi:10.1016/0021-9517(79)90099-X.
Rollmann, L.D., and Walsh, D.E. Mon . "Shape selectivity and carbon formation in zeolites". United States. doi:10.1016/0021-9517(79)90099-X.
@article{osti_6922943,
title = {Shape selectivity and carbon formation in zeolites},
author = {Rollmann, L.D. and Walsh, D.E.},
abstractNote = {The reaction of a feed of equal weights of n-hexane (NC6), 3-methylpentane (3MP), 2,3-dimethylbutane, benzene, and toluene at 427/sup 0/C, 200 psig, and a 3:1 hydrogen-hydrocarbon ratio was studied on Y zeolites, L zeolites, mordenites, ferrierite, and a large number of zeolites of the ZSM series. The coke yields, which varied from approx. 0.02 g to approx. 2.0 g per 100 g paraffin converted, were directly related to the zeolite shape selectivity as measured by the ratio of the first-order rate constants of the disappearance of NC6 to 3MP. The effects of composition and crystal size of the zeolites were minor compared with the pore-structure effect, as was found in previous studies.},
doi = {10.1016/0021-9517(79)90099-X},
journal = {J. Catal.; (United States)},
number = ,
volume = 56:1,
place = {United States},
year = {1979},
month = {1}
}