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Title: Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites

Abstract

The role of Lewis (L) and Broensted (B) acid centers on the H-form of high-silica zeolite in n-hexane cracking has been studied. Active centers were identified by IR spectroscopy in diffusely scattered light. It was established that increasing the L-center concentration in dehydroxylating the H form increases the yield of C/sub 1/-C/sub 2/ paraffins and hydrogen. It was concluded that the role of L centers is to initiate cracking by dehydrogenation or by cleavage of methane from paraffin molecules. The B centers take part in the subsequent conversions of the olefins thus formed.

Authors:
; ; ;
Publication Date:
Research Org.:
N. D. Zelinskii Institute of Organic Chemistry, Moscow (USSR)
OSTI Identifier:
7044588
Resource Type:
Journal Article
Journal Name:
Kinet. Catal. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 28:4; Other Information: Translated from Kinet. Katal; 28: No. 4, 965-969(Jul-Aug 1987)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HEXANE; HETEROGENEOUS CATALYSIS; LEWIS ACIDS; CATALYTIC EFFECTS; ZEOLITES; ALKANES; ALKENES; CATALYSTS; CATALYTIC CRACKING; CHEMICAL REACTION YIELD; DEHYDROGENATION; HYDROGEN; INFRARED SPECTRA; MATERIALS TESTING; METHANE; MORDENITE; SILICA; TEMPERATURE DEPENDENCE; CATALYSIS; CHALCOGENIDES; CHEMICAL REACTIONS; CRACKING; DECOMPOSITION; ELEMENTS; HYDROCARBONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; MINERALS; NONMETALS; ORGANIC COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS; SILICATE MINERALS; SILICON COMPOUNDS; SILICON OXIDES; SPECTRA; TESTING; THERMOCHEMICAL PROCESSES; YIELDS; 400201* - Chemical & Physicochemical Properties

Citation Formats

Zholobenko, V L, Kustov, L M, Borovkov, V Yu, and Kazanskii, B V. Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites. United States: N. p., 1988. Web.
Zholobenko, V L, Kustov, L M, Borovkov, V Yu, & Kazanskii, B V. Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites. United States.
Zholobenko, V L, Kustov, L M, Borovkov, V Yu, and Kazanskii, B V. 1988. "Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites". United States.
@article{osti_7044588,
title = {Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites},
author = {Zholobenko, V L and Kustov, L M and Borovkov, V Yu and Kazanskii, B V},
abstractNote = {The role of Lewis (L) and Broensted (B) acid centers on the H-form of high-silica zeolite in n-hexane cracking has been studied. Active centers were identified by IR spectroscopy in diffusely scattered light. It was established that increasing the L-center concentration in dehydroxylating the H form increases the yield of C/sub 1/-C/sub 2/ paraffins and hydrogen. It was concluded that the role of L centers is to initiate cracking by dehydrogenation or by cleavage of methane from paraffin molecules. The B centers take part in the subsequent conversions of the olefins thus formed.},
doi = {},
url = {https://www.osti.gov/biblio/7044588}, journal = {Kinet. Catal. (Engl. Transl.); (United States)},
number = ,
volume = 28:4,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 1988},
month = {Mon Feb 01 00:00:00 EST 1988}
}