蜂窝陶瓷型La_0_8_Sr_0_2_MnO_3催化剂VOCs催化燃烧反应活性.pdfVIP

第37 卷第1 期 Vol. 37 No. 1 2009 年2 月 JOURNAL OF ZHEJIANG UNIVERSITY OF TECH NOLOGY Feb. 2009 La0. 8 Sr0. 2 MnO3 VOCs , , , , ( , 310032) : 以堇青石( CH) 为第一载体, 六铝酸盐( HA) 为第二载体( w ashcoat) , La0. 8 Sr0. 2 MnO3 ( LSM) 为活性物种, 制备了LSM/ HA/ CH 催化剂. XRD 表征发 , LSM 具有完善的钙钛矿晶型. SEM 观 察表明, 活性物种在涂层表面分散均匀. 通过对苯甲苯二甲苯乙酸乙酯丙酮和乙醇六种有机物 的性能测试, 发 LSM/ HA/ CH 对上述六种有机物均具有很好的催化活性, 特别是对乙酸乙酯等 含氧有机物表 出更好的燃烧性能, 在 10 000 h- 1 空速下, 反应温度为240 时即可将含氧有机物 完全燃烧. : 蜂窝陶瓷; La0. 8 Sr0. 2 MnO3 ; 六铝酸盐; 催化燃烧; VOCs : T Q426. 61 : A : 2009) 0100220 Catalytic combustion of volatile organic compounds on honeycomb ceramic La0. 8 Sr0. 2 MnO3 GU AN Fang, LU Hanfeng, ZHANG yan, LIU Huayan, CHEN Yinfei ( State Key Laboratory Breeding Base of Gr een ChemistrySynthese Technology, Zhejiang University of Technology, H angzhou 310032, China) Abstract La0. 8 Sr0. 2 MnO3 ( LSM) w as coated on the surface of the cordierite ( CH ) , w hich w as precoated w ith hexaaluminate ( HA ) , by impregnation. T he obtained catalyst w as characterized by XRD and SEM . The results show ed that the prepared La0. 8 Sr0. 2 MnO3 perfect perovskite crystalline phase, w ell dispersed and strongly adhered to w ashcoat. The catalytic combustion of benzene, toluene, xylene, ethyl acetate, acetone and ethanol over the catalyst w ere investigated. The catalyst exhibited high catalytic activity, especially for oxygenatedvolatile organic compounds such as ethyl acetate, acetone and ethanol, w hich can be totally converted below 240 at GHSV= 10 000 h- 1 . Key words honeycomb ceramic; La0. 8 Sr0. 2 MnO3 ; hexaaluminate; catalytic combustion; VOCs