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On the interaction of light amines and alcohols with alkali metal exchanged X zeolites

Paper ID Volume ID Publish Year Pages File Format Full-Text
44682 46052 2006 10 PDF Available
Title
On the interaction of light amines and alcohols with alkali metal exchanged X zeolites
Abstract

Adsorption of ammonia, methylamine and 1-propylamine on alkali cation exchanged X zeolites was investigated using in situ IR spectroscopy and compared to sorption of water, ethanol and 1-propanol. Amines and alcohols formed similar primary adsorption complexes in the supercages of alkali cation exchanged zeolite X. Three elements contribute to the bonding, i.e., (i) the polar sorbate interacts with alkali metal cations via the lone electron pair of its electronegative atom, (ii) the protons of the functional groups of the sorbate form hydrogen bonds with the negatively charged oxygen atoms of the framework, and (iii) the hydrogen of the alkyl groups interact with the lattice oxygen. Amines form only primary adsorption complexes and do not exhibit sorbate–sorbate interactions as observed for alcohols.

Keywords
Alkali cation exchanged zeolite X; Alcohol adsorption; Amine adsorption; IR-spectroscopy
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On the interaction of light amines and alcohols with alkali metal exchanged X zeolites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 307, Issue 1, 12 June 2006, Pages 108–117
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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