Dr., Mahendra Patel and Dr., Paul Rabette and Dr., Denise Delafosse and Dr., , Maggy Kermarec (1983) Reactivity and structure of nickel-exchanged Prayssac vermiculite. Journal of the Chemical Society Faraday Transactions 1: Physical Chemistry in Condensed Phases, 79.

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Abstract

The reduction of both lattice Fe3+ and interlayer Ni2+ ions in Prayssac vermiculite is shown to be governed by the same diffusional process, with the removal of water during the reduction assumed to be the rate-determining step. The collapsed structure of the vacuum-activated samples accounts for the difficulty in eliminating water and agrees with the inhibiting effect observed during the reduction. The Fe3+→ Fe2+ transformation is shown to be a redox process. The very weak reactivity of Ni0 particles towards C2H4 hydrogenation agrees with the assumption that most of Ni0 are encaged as atoms in the ditrigonal cavities.

Item Type:	Article
Subjects:	CSIR-800 > Environmental Studies/Chemistry
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	23 Aug 2013 07:34
Last Modified:	23 Aug 2013 07:34
URI:	http://ampri.csircentral.net/id/eprint/480

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