Activity of modified SnO2 catalysts for acid-catalysed reactions

✍ Scribed by A. Y. Jogalekar; R. G. Jaiswal; R. V. Jayaram

• Book ID: 101263182
• Publisher: Wiley (John Wiley & Sons)
• Year: 1998
• Tongue: English
• Weight: 308 KB
• Volume: 71
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/(sici)1097-4660(199803)71:3<234::aid-jctb804>3.0.co;2-5

✦ Synopsis

The e †ect of Lewis and acid modiÐcation on the catalytic BrÔnsted behaviour of was studied. ModiÐed and were SnO 2 AlCl 3 , FeCl 3 , ZnCl 2 H 2 SO 4 used for this purpose. Catalytic activity was tested for FriedelÈCrafts alkylation, acylation and Pechmann condensation. It was observed that the alkylation activity of was improved upon treatment with Lewis acids and acids. SnO 2 BrÔnsted However the acylation activity was observed only when was treated with SnO 2 Moderate improvement in the activity for Pechmann condensation reac-H 2 SO 4

. tion was observed in the case of all the modiÐed catalysts. It was inferred that this method of modiÐcation resulted in an increase in acid strength as well as acidity of the parent oxide catalyst.

1998 SCI (