Correlation between the surface acidity and activity of bismuth tungstate catalysts |
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| Authors: | P K Sinhamahapatra S K Bhattacharyya and S Sinhamahapatra |
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| Institution: | (1) Department of Chemistry, Faculty of Science, Banaras Hindu University, 221005 Varanasi, India;(2) Oil Technology Division, Department of Applied Chemistry, University College of Science and Technology, 700009 Calcutta, India;(3) Present address: Catalyst Section, Indian Institute of Petroleum, P.O. I.I.P., Mohkampur, Dun-248005 Dehra, (U. P.), India |
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| Abstract: | The surface acid strength distribution in bismuth tungstate catalysts with Bi/W ratios of 2/3, 1/1, 2/1 and 6/1 has been investigated. The results are interpreted attributing higher acidities to W–O–W bonds and lower acidities to W=O bonds. An apparent correlation is observed between the surface acidities of the catalysts and their activities in the oxidation and ammoxidation of propylene and 1-butene.
                        Bi/W, 2/3, 1/1, 2/1 6/1.   ,  W–O–W W=O.    1-.
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