摘要
江大学西溪校区催化研究所，杭州３１００２８ 摘要 运用微反技术考察了 ＣｒＯｘ负载型（ＺｒＯ_２载体）催化剂对 ＣＯ＋Ｏ_２和 ＣＯ＋ＮＯ反应的催化活性。研究了微量 Ｐｄ加入 Ｃｒｏｘ基双组元催化剂对上述反应的催化活性、中间产物 Ｎ_２Ｏ生成和 Ｎ_２生成的影响。结果表明， Ｐｄ、 Ｃｒ双组元催化剂活性明显优于单组元的催化剂，催化剂的氧化和还原活性顺序为 Ｐｄ－Ｃｒｏｘ／ＺｒＯ_２＞Ｐｄ／ＺｒＯ_２＞Ｃｒｏｘ／ＺｒＯ_２ 。微量 Ｐｄ的加入能改善ＣｒＯＸ／ＺｒＯ_２催化剂的催化性能，加速Ｎ_２Ｏ的生成速度。
The catalytic activity of ZrO_2 -supported Cr catalyst for CO +O_2 reaction and NO+CO reaction was investigated by fixed bed microreaction process. The effects of the Crox/ZrO_2 added trace Pd on the catalytic activity and formation of N,O or N_2 were also studied. The results showed that additon of trace Pd led to a dramatic increase in the catalytic activity of Crox/zZrO_2. The activity order of catalysts was PdCr/ZrO_2>Pd/ZrO_2>Cr/ZrO_2.
出处
《环境污染与防治》
CAS
CSSCI
CSCD
北大核心
1999年第3期10-11,17,共3页
Environmental Pollution & Control
