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Back matter

Journal of the Chemical Society, Faraday Transactions 1 Vol - 85 Issue - 5

Journal of the Chemical Society, Faraday Transactions 1 Vol - 85 Issue - 4

Journal of the Chemical Society, Faraday Transactions 1 Vol - 85 Issue - 3

Journal of the Chemical Society, Faraday Transactions 1 Vol - 85 Issue - 2

Journal of the Chemical Society, Faraday Transactions 1 Vol -79

Journal of the Chemical Society, Faraday Transactions 1 Vol -69

Reactivity of AlPO₄-5 and the origin of its hydrophilic property

Content Provider	Royal Society of Chemistry (RSC)
Author	Endoh, Akira Tsutsumi, Kazuo Mizoe, Kiyoshi Takaishi, Tetsuo
Copyright Year	1989
Abstract	The reactivity of AlPO4-5 was measured through the isotope exchange reaction of 18O between C18O2 and the framework oxygen, and its hydrophilicity was investigated by measuring the heat of adsorption of water. About 25% of the framework oxygen atoms were exchanged, and one quarter of them (ca. 6% of the total oxygen atoms) was highly reactive. The differential molar heat of adsorption, calorimetrically determined, was ca. 86 kJ mol–1 at the initial stage and suddenly dropped to ca. 50 kJ mol–1. This tendency is characteristic of hydrophobic zeolites, and indicates the existence of special hydrophilic sites. It is concluded, through quantitative analyses, that the highly reactive oxygen atoms and hydrophilic sites originate from defects, and that the concentrations of the defects, estimated from each of the above two, are in good agreement.
Starting Page	1327
Ending Page	1335
Page Count	9
File Format	PDF
ISSN	03009599
Volume Number	85
Issue Number	6
Journal	Journal of the Chemical Society, Faraday Transactions 1
DOI	10.1039/F19898501327
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Oxygen Reactive oxygen species Isotope Adsorption Oxygen-18 Hydrophile Hydrophobe
Content Type	Text
Resource Type	Article
Subject	Chemistry

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