Benzene oxidation with ozone over MnOx/SBA-15 catalysts

被引：46

作者：

Jin, Mingshi ^{[1
,2
]}

Kim, Jung Hwan ^{[3
]}

Kim, Ji Man ^{[1
,2
]}

Jeon, Jong-Ki ^{[4
]}

Jurng, Jongsoo ^{[5
]}

Bae, Gwi-Nam ^{[5
]}

Park, Young-Kwon ^{[3
,6
]}

机构：

[1] Sungkyunkwan Univ, Dept Chem, Sch Chem Mat Sci BK21, Suwon 440746, South Korea

[2] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea

[3] Univ Seoul, Grad Sch Energy & Environm Syst Engn, Seoul 130743, South Korea

[4] Kongju Natl Univ, Dept Chem Engn, Cheonan 330717, South Korea

[5] Korea Inst Sci & Technol KIST, Ctr Environm Hlth & Welf Res, Seoul 136791, South Korea

[6] Univ Seoul, Sch Environm Engn, Seoul 130743, South Korea

来源：

CATALYSIS TODAY | 2013年 / 204卷

关键词：

MnOx/SBA-15; Catalytic oxidation; Benzene; Ozone; Mn acetate; Mn nitrate; SUPPORTED MANGANESE OXIDES; ALUMINA; DECOMPOSITION; REMOVAL;

D O I：

10.1016/j.cattod.2012.09.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic oxidation of benzene with ozone has been studied using manganese oxides with two different manganese precursors, Mn(NO3)(2) and Mn(CH3COO)(2), supported on SBA-15 (MnOx/SBA-15). The catalysts were characterized by X-ray diffraction, N-2 adsorption-desorption, Raman spectroscopy, and H-2-temperature programmed reduction. The manganese nitrate (MN) precursor primarily resulted in large particles on the silica support, while the manganese acetate (MA) precursor mainly resulted in a highly dispersed manganese oxide on the silica support. The catalytic activity was dependent upon ozone concentration, reaction times, and the amount of Mn loading. Higher benzene conversion, O-3 conversion, and COx yield were observed for MnOx-MA/SBA-15 catalyst over MnOx-MN/SBA-15, due to the highly dispersed manganese oxides on the supports, and the higher oxygen mobility. The 15 wt% MnOx-MA/SBA-15 catalyst shows the highest catalytic activity of all the catalysts considered in this study. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：108 / 113

页数：6

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