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Title: A study of AlPO4 by 27Al and 31P MAS NMR spectroscopy
Authors: Prabakar, S
Rao, K J
Rao, C N R
Keywords: phosphates
Issue Date: Aug-1991
Publisher: Pergamon-Elsevier Science Ltd
Citation: Materials Research Bulletin 26(8), 805-812 (1991)
Abstract: In order to understand the structure of aluminum phosphates, prepared by the sol-gel method, 27AI and MAS NMR spectroscopy has been employed. The evolution of structure during the gel-glass-crystal transformation has been followed as a function of both temperature and compostion. Aluminum is octahedrally coordinated in the xerogel and on heating it is partially converted into tetrahedrally coordinated A1 in the gel glass. Phosphorous is present in metaphosphate units. The structure of crystalline AIPO4 is shown to consist of an ordered covalent network involving [PO4/2 ]+ and [A104/2]- units.
Description: Restricted Access
Other Identifiers: 0025-5408
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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