N. Srinivas, M. R. Kishan, S. J. Kulkarni
Sep 1, 2000
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0
Influential Citations
17
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Journal
Microporous and Mesoporous Materials
Abstract
Abstract Silicoaluminophosphate (SAPO) and modified SAPOs, such as Sb–V-SAPO-5, Mo–V-SAPO-5 and Mn–V-SAPO-5, have been prepared. XRD and FT-IR were used to characterize the catalysts and confirm preservation of crystallinity after various treatments. The modified SAPOs are highly active (>90% yield) in the ammoxidation of 4-picoline and 3-picoline (>85%). The crystalline Sb–V-SAPO-5 was more active in the ammoxidation of 3-picoline compared to the amorphous catalysts in current use. The modification by vanadium, and antimony, molybdenum or manganese improved the yield of 4-cyano and 3-cyanopyridine. We have modified proposed V-SAPO-5 molecular sieve as the active catalyst for the ammoxidation of picolines.