Thiol-oxidation with zeolite encapsulated phthalocyanines: influence of the solid support

✍ Scribed by Frédéric Thibault-Starzyk; Mark Van Puymbroeck; Rudy F. Parton; Pierre A. Jacobs

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 411 KB
• Volume: 109
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(96)00026-x

✦ Synopsis

The catalytic activity of zeolite encapsulated cobalt-phthalocyanine for thiol autoxidation varies with the composition of the zeolite support. Different zeolites were compared with carbon supports. The Si/Al ratio in the zeolite appears to be the key factor: it determines the hydrophobicity of the support, and it influences the loading of active complex in the zeolite. Two different types of reaction were tested: in an aqueous alkaline medium, the activity increases with hydrophobicity of the support (thus giving carbon a substantial advantage), while in an organic medium, were the commonly used systems are less efficient, sodium Y zeolite is more active than the usual carbon support.