摘要
以堇青石蜂窝陶瓷体为第一载体、γ-Al2O3为第二载体,制成的含稀土La和过渡金属元素的复合氧化物催化剂,在连续流动的反应体系上评价了催化剂对苯、氰氢酸、乙酸和氯苯等VOCs的氧化反应活性。结果表明:采用LaCuMn组合制备的催化剂,La的含量在7%-10%左右、Cu的含量在5.5%左右、Mn的含量在7.5%左右时,第二载体γ-Al2O3的负载以采用半胶、pH值4—5、加入某些活性剂、负载量以70%-10%、活化温度为400-500℃时制成的催化剂的活性最好,研制的 VOCs控制催化剂对各种VOCs均具有很高的催化活性。
In this paper, mixed-metal oxides catalysts were prepared through loading of La and several kinds of transition metal on cordierite honeycomb ceramics pre-supported with γ-Al2O3 as the second support. The reactivity of the catalysts to benzene, hydrogen cyanide, acetic acid and chlorobenzene was investigated in a continuous fluid reaction system. The result shows that when the contents of La and two kinds of
metal Cu and Mn were 6% - 10%, 5.5% and 7.5% respectively, after activation at 400 ℃, and γ-Al2O3 was supported with an half-colloid solution of pH 4 -5, the contents was 7% - 10% , adding with some additives simultaneously, the performance of the catalyst is the best, and reactivity of the catalyst to many kinds of VOCs is high enough.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2004年第4期571-574,共4页
Journal of the Chinese Society of Rare Earths
基金
国家科技部"863"资助项目(2001AA324050)
关键词
催化化学
VOCS
催化剂
稀土
catalytic chemistry
VOCs
catalyst
rare earths