Platinum Nanoparticles Supported on Hierarchically Porous Aluminosilicate Nanospheres for Low-Temperature Catalytic Combustion of Volatile Organic Compounds

被引：24

作者：

Hao, Yu ^{[1
]}

Chen, Shaohua ^{[1
]}

Wang, Huan ^{[1
]}

Chen, Rui ^{[1
]}

Sun, Pingchuan ^{[2
]}

Chen, Tiehong ^{[1
]}

机构：

[1] Nankai Univ, Sch Mat Sci & Engn, Inst New Catalyt Mat Sci, Key Lab Adv Energy Mat Chem MOE, Tianjin 300350, Peoples R China

[2] Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat MOE, Tianjin 300071, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2020年 / 3卷 / 08期

基金：

中国国家自然科学基金;

关键词：

VOCs; catalytic combustion; hierarchically porous; Pt nanoparticles; acidity; TETRALIN HYDROGENATION; MESOPOROUS MATERIALS; ENHANCED ACTIVITY; TOTAL OXIDATION; TOLUENE; PERFORMANCE; PD; BENZENE; ADSORPTION; ZEOLITES;

D O I：

10.1021/acsanm.0c02001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The hierarchically porous silica (NKM-5) and aluminosilicate (Al-NKM-5) supported platinum nanoparticles catalysts were prepared and investigated for the catalytic combustion of toluene and ethanol. The Pt/NKM-5 and Pt/Al-NISI-5 catalysts displayed the submicrometer spherical morphology and the hierarchical pore structure, and the Pt nanoparticles were uniformly distributed. The Pt/NKM-5 and Pt/Al-NKM-5 showed excellent low-temperature catalytic activity and CO2 selectivity, and the hierarchical pores were beneficial to the catalytic combustion of toluene. With the increase of Al content, the catalytic activity of Pt/Al-NKM-5 increased gradually; the Pt/Al-NKM-5-5 catalyst with Si/Al = 5 showed the most excellent catalytic activity with 90% toluene conversion at 146 degrees C and 90% ethanol conversion at 138 degrees C. The NMR and NH3-TPD showed that the incorporation of Al could increase the acidity of support, which could promote the distribution of Pt and the adsorption of toluene as characterized by UV-vis, TEM, CO pulse chernisorption, and FTIR. The excellent catalytic activity of Pt/Al-NKM-5-5 could be ascribed to the hierarchically porous structure, more acidic sites, and higher Pt dispersity.

引用

页码：8472 / 8482

页数：11

共 67 条

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