Manganese oxide hollow structures with different phases: Synthesis, characterization and catalytic application

被引：31

作者：

Fu, Xiaobo ^{[1
,2
]}

Feng, Jiyun ^{[1
]}

Wang, Huan ^{[1
,2
]}

Ng, Ka Ming ^{[1
,2
]}

机构：

[1] Nano & Adv Mat Inst Ltd, Hong Kong, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Hong Kong, Hong Kong, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 14期

关键词：

Manganese oxide; Hollow structure; Calcination; Aerobic oxidation; Cinnamyl alcohol; AEROBIC OXIDATION; ALCOHOLS; EFFICIENT; DIOXIDE; CARBON; WATER; REDUCTION; ALDEHYDES; KETONES; URCHINS;

D O I：

10.1016/j.catcom.2009.06.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Manganese oxide hollow structures with different phases were synthesized by calcination using a gamma-MnO2 hollow structure as a precursor. Our results revealed that the as-synthesized beta-MnO2 and Mn2O3 Still maintained the morphology of the precursor. Compared with the MnO2 reported and conventional MnO2. both the gamma-MnO2 and beta-MnO2 hollow structures showed a higher catalytic activity and an excellent selectivity in the aerobic oxidation of cinnamyl alcohol to cinnamyl aldehyde. The TPR experiments demonstrated that the reduced size of crystallite, hollow nature and higher BET specific surface area were responsible for their higher catalytic activity. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1844 / 1848

页数：5

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