Ti-MCM-41 as catalyst for α-pinene oxidation: Study of the effect of Ti content and H2O2 addition on activity and selectivity

✍ Scribed by Sandra G. Casuscelli; Griselda A. Eimer; Analia Canepa; Angelica C. Heredia; Carlos E. Poncio; Mónica E. Crivello; Celso F. Perez; Alfredo Aguilar; Eduardo R. Herrero

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 448 KB
• Volume: 133-135
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/j.cattod.2007.12.104

✦ Synopsis

Ti containing mesoporous materials with a MCM-41 structure were applied as heterogeneous catalysts for the liquid phase oxidation of apinene with hydrogen peroxide at 343 K. The catalysts were characterized by N 2 adsorption, XRD and DRUV-Vis. The results obtained by varying the Ti content showed slight changes in the a-pinene conversion. The major products were verbenol, verbenone and campholenic aldehyde with a conversion about 12-16%. The yield of the reaction products was duplicated when an additional amount of H 2 O 2 was added after 1 h of reaction. A high selectivity was obtained for the products of the allylic oxidation. A reaction mechanism was proposed in order to explain the obtained results.