| 高比表面积介孔Cr2O3：制备及高效催化氧化去除甲苯 |
| Mesoporous Cr2O3 with High Surface Area：Preparation and Catalytic Activity Performance for Toluene Combustion |
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| 摘要: 采用Cr（NO3）3·9H2O作金属源，葡萄糖作模板剂，通过葡萄糖辅助固态热分解法制备得到高比表面积的虫孔状介孔Cr2O3，采用XRD、TEM、TPR和N2吸脱附技术表征其物理化学性质，并考察了介孔Cr2O3上催化氧化去除甲苯的性能。结果表明，经过500℃灼烧处理的m-Cr-5催化剂比表面积高达162m2·g-1，平均孔径为6.2nm，且具有优良的低温还原性和多价态铬物种并存，使其催化氧化去除甲苯的活性最好。 |
| 关键词: 介孔材料 过渡金属氧化物 热分解法 挥发性有机物消除 |
| 基金项目: 国家自然科学基金（No.21076026）资助项目。 |
| Abstract: High specific surface area worm-like mesoporous chromium oxides were fabricated using the glucose-assisted thermal decomposition approach with chromium nitrate as the metal source. The physicochemical properties of the materials were characterized by XRD, TEM, TPRand N2 adsorption-desorption techniques, and the catalytic activity was evaluated for the oxidation of the toluene. The m-Cr-5 catalyst via 500 ℃ calcination process exhibits the highest specific surface area of 162 m2·g-1, the average pore size of 6.2 nm, and the excellent low temperature reducibility and multiple oxidation-state chromium species coexistence. Compared to the bulk chromium oxide, the factors such as low temperature reducibility, high-surface area, and multiple oxidation-state chromium species coexistence are responsible for the excellent catalytic performance of m-Cr-5 in toluene combustion. |
| Keywords: mesoporous materials transition-metal oxide thermal decomposition method volatile organic compounds removal |
| 投稿时间：2013-08-15 修订日期：2013-11-06 |
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| 刘晶,夏云生,包德才,曾凌.高比表面积介孔Cr2O3：制备及高效催化氧化去除甲苯[J].无机化学学报,2014,30(2):353-358. |
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