Isomerization of Norbornadiene to Quadricyclane Using Ti-Containing MCM-41 as Photocatalysts

• Published in: Catalysis letters Vol. 124; no. 1-2; pp. 139 - 145
• Main Authors: Zou, Ji-Jun, Zhang, Ming-Yue, Zhu, Bin, Wang, Li, Zhang, Xiangwen, Mi, Zhentao
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.08.2008; Springer; Springer Nature B.V
• Subjects: Catalysis; Catalytic activity; Chemistry; Chemistry and Materials Science; Colloidal state and disperse state; Crystallites; Dispersion; Exact sciences and technology; General and physical chemistry; Industrial Chemistry/Chemical Engineering; Isomerization; Organic chemistry; Organometallic Chemistry; Photocatalysis; Photochemistry; Physical Chemistry; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Porous materials; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Titanium; Titanium dioxide; Quadricyclane; Photocatalyst; Ti–MCM-41; Isomerization; Norbornadiene; Heterogeneous catalysis; Photocatalysis; Ti¯MCM-41; Porous material; Mesoporosity; Norbornadiene˙ Quadricyclane ˙ Isomerization
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-008-9441-5

Heterogeneous Ti-containing MCM-41 materials were prepared for the photocatalytic isomerization of norbornadiene to quadricyclane with the aim of replacing homogeneous sensitizers. Chemical grafting produces quantum-size TiO 2 crystallites highly dispersed in the pore of MCM-41. Isomorphous substitution generates Ti species in the framework of MCM-41, but some non-framework species are formed with increasing Ti content. It is found that Ti-containing MCM-41 materials show significantly higher photocatalytic activity than bulk TiO 2 , and the framework Ti species are more active than the surface-dispersed species.