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RSC Adv

Title:		MnO (x) dispersed on attapulgite derived Al-SBA-15: a promising catalyst for volatile organic compound combustion
Author(s):		Meng J; Fang F; Feng N; Wan H; Guan G;
Address:		"State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for AdvancedMaterials, Jiangsu Collaborative Innovation Center for Advanced Inorganic FunctionComposites, Nanjing Tech University Nanjing 210009 P. R. China guangf@njtech.edu.cn wanhui@njtech.edu.cn +86 25 83587198"
Journal Title:		RSC Adv
Year:		2020
Volume:		20200114
Issue:		5
Page Number:		2472 - 2482
DOI:		10.1039/c9ra08157g
ISSN/ISBN:		2046-2069 (Electronic) 2046-2069 (Linking)
Abstract:		"To improve the catalytic activity when utilizing metal oxides for the combustion of VOCs, Mn/Al-SBA-15 catalysts have been successfully synthesized through an emerging wetness impregnation technique involving Mn(NO(3))(2) on Al-SBA-15, which has been directly prepared from attapulgite by a hydrothermal method. Compared to Mn/SBA-15, which is prepared with TEOS as its silicon source, all the as-prepared Mn/Al-SBA-15 catalysts demonstrated enhanced catalytic performance in the oxidation of toluene. From this research, the 8% Mn/Al-SBA-15 catalyst presented the best catalytic performance, due to the high efficiency resulting from the high chemical valence of Mn(4+). When the concentration of toluene was 2000 ppm, and the space velocity was 60 000 mL (g h)(-1), 8% Mn/Al-SBA-15 could effectively reduce the T (50) and T (90) values of toluene to 201 and 278 degrees C, respectively; while the 8% Mn/SBA-15 catalyst could reduce the T (50) and T (90) values of toluene to 223 and 298 degrees C, respectively. A systematic investigation has been conducted to reveal the synergistic effects of Al doping and manganese loading on the enhanced catalytic performance. The experiments showed impressive results, demonstrating that Al doping can not only increase the surface acidity of SBA-15, but it can also be beneficial for achieving a uniform dispersion of MnO (x) on the surface and in the pores of Al-SBA-15, resulting in the enhancement of the catalytic performance"
Keywords:
Notes:		"PubMed-not-MEDLINEMeng, Jie Fang, Fan Feng, Nengjie Wan, Hui Guan, Guofeng eng England 2020/01/14 RSC Adv. 2020 Jan 14; 10(5):2472-2482. doi: 10.1039/c9ra08157g. eCollection 2020 Jan 14"