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A Surface Organometallic Approach for Controlling the Pore Opening Size of Zeolites: the Case of Mordenite Modified via Grafting of Dineopentylmagnesium
Author(s) -
Théolier Albert,
Custodero Emmanuel,
Choplin Agnès,
Basset JeanMarie,
Raatz Francis
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199008051
Subject(s) - mordenite , grafting , adsorption , selectivity , zeolite , chemical engineering , hexane , chemistry , molecular sieve , materials science , catalysis , organic chemistry , polymer , engineering
The shape selectivity of zeolites toward guest molecules can be controlled by “grafting” organometallic compounds at the entrances to the pores on the surface and thus reducing the size of the pores in a defined way. For example, the adsorption capacity of a mordenite for isooctane is nearly lost upon reaction with dineopentylmagnesium, whereas its capacity for n ‐hexane decreases only slightly. Zeolites modified in this way can react still further: for example, oxide coatings can be generated.