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Structure and Activity of NiO/α-Al_2O_3 and NiO/ZrO_2 Calcined at High Temperatures I. Structure

Gavalas, G. R. and Phichitkul, C. and Voecks, G. E. (1984) Structure and Activity of NiO/α-Al_2O_3 and NiO/ZrO_2 Calcined at High Temperatures I. Structure. Journal of Catalysis, 88 (1). pp. 54-64. ISSN 0021-9517. doi:10.1016/0021-9517(84)90049-6.

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A series of NiO/α-Al_2O_3 and NiO/ZrO_2 catalysts were prepared by impregnation and calcination in air between 750 and 1050 °C. Examination of the catalysts by means of nitrogen adsorption, H_2 chemisorption, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy showed marked variations in physical and chemical properties as a function of calcination temperature. The results indicate that NiO does not interact with ZrO_2 whereas NiO-Al_2O_3 interaction is extensive at the interface between NiO and Al_2O_3 when the calcination temperature exceeds 850 °C. When the calcined samples of NiO/ZrO_2 were reduced in hydrogen, extensive redispersion of the metal was observed.

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Gavalas, G. R.0000-0003-1468-6835
Additional Information:© 1984 by Academic Press, Inc. Received December 13, 1982; revised February 14, 1984.
Issue or Number:1
Record Number:CaltechAUTHORS:20151104-143219052
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61844
Deposited By: Ruth Sustaita
Deposited On:05 Nov 2015 02:44
Last Modified:10 Nov 2021 22:54

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