Short channeled Zr-Ce-SBA-15 supported palladium catalysts for toluene catalytic oxidation

被引：28
作者：
Wang, Fang [1 ]
Li, Jiansheng [1 ]
Yuan, Jinfang [1 ,2 ]
Sun, Xiuyun [1 ]
Shen, Jinyou [1 ]
Han, Weiqing [1 ]
Wang, Lianjun [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Key Lab Jiangsu Prov Chem Pollut Control & Resour, Nanjing 210094, Peoples R China
[2] Henan Univ, Inst Fine Chem & Engn, Kaifeng 475001, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Short channeled; Mesoporous silica; Pd; Toluene; Catalytic oxidation; MESOPOROUS SBA-15; DEEP OXIDATION; FUNCTIONALIZED SBA-15; SILICA; TIO2; SIZE;
D O I：
10.1016/j.catcom.2011.05.021
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：
Short channeled Zr-Ce-SBA-15 (ZCS) mesoporous materials were synthesized through hydrothermal routes without addition of mineral acids. 0.5 wt.% palladium was loaded on ZCS and SBA-15 via an ethanol reduction approach. Pd/ZCS possesses unique hexagonal platelet morphologies with short channels running parallel to the thickness in the range of 400-500 nm, while Pd/SBA-15 has a fibrous macrostructure with channels at the micrometer scale. Palladium species present in supports as well dispersed PdO nanocrystals with diameter of ca. 5-6 nm. Comparing with Pd/SBA-15, Pd/ZCS shows enhanced catalytic activity for toluene oxidation, which is ascribed to short channeled supports facilitating the molecular diffusion. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：1415 / 1419
页数：5
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