Synthesis and Catalytic Activity of Cu-Incorporated MCM-41 with Spheres-within-a-Sphere Hollow Structure

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2006,（11）
• 页码范围: 1653-1656
• 页数: 4页
• 语种: 英文

摘要

Cu-incorporated ordered hexagonal mesoporous silicates (Cu-MCM-41) with spheres-within-a-sphere hollow structure have been synthesized using thermoreversible polymer hydrogel methylcellulose (MC) and cationic surfactant as co-templates, which have been characterized by scanning electron micrograph (SEM), X-ray diffraction (XRD), ransmission electron micrograph (TEM), and N2 adsorption-desorption isotherms. The obtained results indicate that the morphology of Cu-incorporated MCM-41 materials is "spheres-within-a-sphere" hollow structure,which is very similar to that of the alveolus. In benzene hydroxylation with H2O2, the hollow spheres show much higher catalytic activity than particles of Cu-MCM-41.Keywords hollow sphere, MCM-41, mesoporous material, benzene hydroxylation, hydrogel, methylcellulose E-mail: fsxiao @mail.jlu.edu.cn; Tel.: [phone]; Fax: [phone]revised and accepted July 5, 2006.