复合催化剂CuO-MnO_2-CeO_2/13X制备及其对萘的催化性能  

PREPARATION OF CuO-MnO_2-CeO-_2/13X CATALYST AND ITS CATALYTIC PERFORMANCE FOR NAPHTHALENE

作　　者：单龙[1] 周宏仓[1] 何都良[1] 赵艳景[1] 徐菲菲[1] 

机构地区：[1]南京信息工程大学环境科学与工程学院江苏省大气环境监测与污染控制高技术研究重点实验室,南京210044

出　　处：《环境工程》2015年第10期95-100,151,共7页Environmental Engineering

基　　金：江苏省高校科研成果产业化推进项目(JHB 2011-14);江苏省"六大人才高峰"资助项目(2013-JNHB-021);南京信息工程大学科研预研基金项目(20110376);江苏高校优势学科建设工程资助项目

摘　　要：采用浸渍法制备出复合过渡金属氧化物催化剂Cu O-Mn O2-Ce O2/13X,并用氮吸附、SEM、XRD、TGA对其结构、组成及热稳定性进行了表征,同时在固定催化床中研究了Cu O-Mn O2-Ce O2/13X催化剂对萘的催化性能。BET分析表明6%Cu O-Mn O2-2%Ce O2/13X催化剂的比表面积达到了476 m2/g,平均孔径达到2.314 nm,SEM和XRD结果表明一定负载率下Cu O、Mn O2、Ce O2在13X表面呈高度分散状态,有利于催化剂的催化活性提高。催化降解实验结果表明助催化剂Ce O2的适量添加可以明显提高催化剂的性能,当催化剂的负载率为6%Cu O-Mn O2-2%Ce O2时其对萘的催化率达到了65%。The transition metal oxide catalyst Cu O-Mn O2-Ce O2/13 X was prepared by the impregnation method. The structure,compositions and thermal stability of the catalysts were characterized by N2 adsorption / desorption,SEM,XRD and TGA. The catalytic degradation property of Cu O-Mn O2-Ce O2/13 X for naphthalene was investigated in a fixed catalyst bed. BET analysis showed 6% Cu O-Mn O2-2% Ce O2/13 X catalyst＇s specific surface area was 476 m2/ g and its average pore size was 2. 314 nm.XRD and SEM results showed that Cu O,Mn O2 and Ce O2 at 13X surface was highly dispersed state under certain load rate,which could improve the catalytic activity of catalysts. Experimental results indicated that adding appropriate amount of cocatalyst Ce O2 could improve the performance of the catalysts. The catalytic rate of naphthalene reached 65% when the catalyst load factor was 6% Cu O-Mn O2-2% Ce O2.

关 键 词：萘 CuO-MnO2-CeO2/13X 催化降解 

分 类 号：X705[环境科学与工程—环境工程] O643.3[理学—物理化学]