Synthesis of Submicrometer-sized Sn-MCM-41 Particles and Their Catalytic Performance in Baeyer-Villiger Oxidation

doi:10.1007/s40242-014-4204-x

Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (1): 138-143.doi: 10.1007/s40242-014-4204-x

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Synthesis of Submicrometer-sized Sn-MCM-41 Particles and Their Catalytic Performance in Baeyer-Villiger Oxidation

CHEN Na², JIANG Yanqiu^1,2, CHENG Wenjing², LIN Kaifeng^1,2, XU Xianzhu²

1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, P. R. China;
2. Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, P. R. China

Received:2014-05-28 Revised:2014-07-25 Online:2015-02-01 Published:2014-08-04
Contact: LIN Kaifeng, E-mail:linkaifeng@hit.edu.cn;XU Xianzhu, E-mail:xuxianzhu@hit.edu.cn E-mail:linkaifeng@hit.edu.cn;xuxianzhu@hit.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21303031), the Natural Science Foundation of Heilongjiang Province of China(No.B201010), the Open Project of State Key Laboratory of Urban Water Resource and Environment of HIT, China(No.QA201021), the Fundamental Research Funds for the Central Universities, China(No.HIT. NSRIF. 2013058), the Talent Program for Innovation of Science and Technology of Harbin City, China(No.2013RFQXJ004) and the China Postdoctoral Science Foundation(Nos.2012T50334, 20100480991).

Abstract

Abstract:

Submicrometer-sized tin-containing MCM-41 particles with a size of several hundred nanometers(Sn-MCM-41/SMPs) were rapidly prepared with tin chloride as tin source and tetraethyl orthosilicate as silicon source via a dilute solution route in sodium hydroxide medium at room temperature. The characterization results show the highly ordered hexagonal mesopores and tetrahedral Sn species in Sn-MCM-41/SMPs. The material proved to be active and selective for Baeyer-Villiger oxidation of adamantanone with aqueous H₂O₂. Notably, Sn-MCM-41/ SMPs displayed a higher initial reaction rate and turnover number(TON) than common micrometer-sized Sn-MCM-41 large particles(Sn-MCM-41/LPs), mainly attributed to the accelerated diffusion of the reactants and enhanced accessibility to the catalytic Sn species via shorter mesopore channels in Sn-MCM-41/SMPs. Furthermore, Sn-MCM-41/SMPs could be reused without the loss of activity after five runs, indicating that Sn active sites in the submicrometer-sized particles are remarkably stable. The study shows that decreasing particle size of Sn-MCM-41 in submicrometer scale is an effective way to achieve catalysts for Baeyer-Villiger oxidations with improved catalytic performance.

Key words: Sn-MCM-41, Submicrometer-sized particle, Shorter mesopore channel, Baeyer-Villiger oxidation

CHEN Na, JIANG Yanqiu, CHENG Wenjing, LIN Kaifeng, XU Xianzhu. Synthesis of Submicrometer-sized Sn-MCM-41 Particles and Their Catalytic Performance in Baeyer-Villiger Oxidation[J]. Chemical Research in Chinese Universities, 2015, 31(1): 138-143.

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Synthesis of Submicrometer-sized Sn-MCM-41 Particles and Their Catalytic Performance in Baeyer-Villiger Oxidation

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