摘要
以蜂窝状堇青石为载体,采用改性氧化铝浆液涂覆载体,再负载活性组分Pt和Pd,制备了丙烷催化燃烧催化剂,优化了催化剂制备工艺条件。研究表明:Si与CexZr1-xO的添加明显提高了涂层的耐高温性能,CexZr1-xO/SiO2-Al2O3涂层在高温下保持了较高的比表面积;活性组分Pt和Pd在其表面分散均匀;本实验制备的催化剂在430℃和20 000 h-1空速条件下,对含丙烷废气的总烃去除率可以达到90%以上。
The catalyst for catalytic combustion of propane was prepared by supporting Pt-Pd on honeycomb-like cordierite with modified-Al2O3 coating. The preparation conditions were optimized. The results show that the addition of Si and CexZr1-xO can improve the thermal stability of the catalyst coating. CexZr1-xO/Si O2-Al2O3 coating has high specific surface area, and the active components can be evenly dispersed on the surface. Under the space velocity of 20 000 h-1 and the inlet temperature of 430 ℃,the total hydrocarbon removal rate is more than 90% for VOCs containing propane.
出处
《当代化工》
CAS
2015年第2期249-252,共4页
Contemporary Chemical Industry
基金
中国石油化工集团公司资助项目
项目编号:312048
关键词
催化氧化
丙烷
改性
铈锆氧化物
Catalytic oxidation
Propane
Modification
Cerium-zirconium oxide
