Tetralin oxidation over chromium-containing molecular sieve catalysts

✍ Scribed by R.A. Shaikh; G. Chandrasekar; Kalidas Biswas; Jung-Sik Choi; Won-Jin Son; Soon-Yong Jeong; Wha-Seung Ahn

• Book ID: 104009860
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 590 KB
• Volume: 132
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/j.cattod.2007.12.003

✦ Synopsis

A series of catalysts in which a transition metal (Fe, Co, and Cr) is incorporated into MCM-41, hexagonal mesoporous aluminophosphate (HMA), and AlPO 4 -5 matrix was prepared and tested for liquid phase oxidation of tetralin using tert-butyl hydroperoxide as an oxidizing agent. In general, chromium-containing catalysts showed higher catalytic activity as well as higher a-tetralone selectivity than iron or cobalt-incorporated catalysts. In addition, HMA proved more effective as a support material than MCM-41. CrHMA was the most active (64.9% conversion) and selective (80% a-tetralone selectivity) catalyst, but developed metal leaching due to its amorphous pore walls. CrAlPO 4 -5, having a crystalline structure, showed higher resistance to metal leaching than CrHMA.