Pt nanoparticles anchored on rare metal oxide coated on SBA-15: a highly active catalyst for synergistic catalytic hydrogenation of benzaldehyde

被引：8
|
作者：
Zhang Yanji [1 ]
Zhou Jicheng [1 ]
机构：
[1] Xiangtan Univ, Key Lab Green Catalysis & Chem React Engn Hunan P, Sch Chem Engn, Xiangtan 411105, Hunan, Peoples R China
来源：
NANOTECHNOLOGY | 2020年 / 31卷 / 29期
基金：
中国国家自然科学基金;
关键词：
synergistic effect; hybrid nanostructure; benzaldehyde hydrogenation; rare metal oxide; SBA-15; LIQUID-PHASE HYDROGENATION; SELECTIVE HYDROGENATION; CHEMOSELECTIVE HYDROGENATION; BENZYL ALCOHOL; NANOSTRUCTURED CATALYSTS; PHOTOCHEMICAL ROUTE; NANO-PD; ALDEHYDES; PERFORMANCE; SUPPORT;
D O I：
10.1088/1361-6528/ab81c4
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report a novel hybrid nano-structure Pt catalyst, by coating rare metal oxide (CeO2 or La2O3) on the surface of SBA-15, then anchoring Pt nanoparticles on the CeO2/SBA-15 or La2O3/SBA-15 via a photochemical route. For the hydrogenation of benzaldehyde, the Pt/@-CeO2/SBA-15 and Pt/@-La2O3/SBA-15 catalysts demonstrated outstanding activity and excellent selectivity, much higher than that of Pt/CeO2, Pt/La2O3 and Pt/SBA-15. In particular, the TOF of Pt/@-La2O3/SBA-15 reached 2324 h(-1), 2.3-fold higher than the atomically dispersed catalyst (Pd-1/TiO2, 1002 h(-1)) in the literature. The superior catalytic performance was attributed to the special structure and the synergistic effect between the Pt nanoparticles and CeO2/SBA-15(La2O3/SBA-15). The content of metal oxide played an important role in the reaction, as only a suitable content of metal oxide could ensure that this hybrid structure would show the best performance.
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页数：10
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