| 2种催化剂在甲苯燃烧反应中的催化性能 |
| 摘要点击 715 全文点击 1759 投稿时间：1996-05-14 |
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| 中文关键词 甲苯有机废气燃烧反应 蜂窝陶瓷整体催化剂 热稳定性 起燃温度 |
| 英文关键词 combustion reaction of toluene exhaust honeycomb ceramic monolith catalyst thermal stability light-off temperature |
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| 中文摘要 |
| 利用甲苯有机废气为指标反应,在常压连续流动反应装置上研究了贵金属和非贵金属峰窝陶瓷整体催化剂的催化性能。考察了甲苯浓度、氧含量、反应空速及床层线速度对催化剂活性的影响及其耐高温性能。表明不同条件下贵金属催化剂的活性均优于非贵金属催化剂。催化剂经600℃处理3h后,非贵金属催化剂上甲苯有机废气的起燃温度比贵金属催化剂高50℃。当催化剂经900℃处理3h后,甲苯有机废气在贵金属催化剂上的起燃温度与600℃处理催化剂相比仅提高了3℃。而相同处理条件下,非贵金属催化剂上甲苯有机废气起燃温度却提高了87℃。 |
| 英文摘要 |
| Toluene organic exhausts were regarded as index reaction in evaluating the catalytic performance of honeycomb ceramic monolith catalysts consisting of noble metals and non-noble metals respectively by means of a continuous system with a fixed bed of catalysts. The effect of toluene concentration and oxygen content in the exhaust,space velocity,linear velocity on toluene reaction,and the thermal stability of catalysts were investigated.It is found that the activity of noble metal catalyst is superior than that of non-noble metal catalyst under different conditions.The light-off tempe rature of toluene exhaust on non-noble metal catalyst is by 50℃ higher than that on noble metal catalyst after catalysts calcine at 600℃ for 3h.Meanwhile,after catalysts calcine at 900℃ for 3h,the light-off temperature of toluene exhaust on noble metal catalyst increases only by 3℃ as compared with the calcination of 600℃ for 3h. But under same condition,the light-off temperature of toluene exhaust on non-noble metal catalyst increases by 87℃. |
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