Catalytic combustion of soot on KNO3/ZrO2 catalysts. Effect of potassium nitrate loading on activity
Catalytic combustion of soot on KNO3/ZrO2 catalysts. Effect of potassium nitrate loading on activity
复制标题
DOI：
10.1021/ie020482i
复制
发表时间：
2003-01
影响因子：
4.2
通讯作者：
Alfredo L. Carrascull;M. Ponzi;E. Ponzi
中科院分区：
文献类型：
--
作者：
Alfredo L. Carrascull;M. Ponzi;E. Ponzi
制备了Co-KNO 3-ZrO 2和Co-ZrO 2。研究了硝酸钾浓度对烟尘氧化反应活性的影响。采用BET、XRD、DSC、TPR和SEM等技术对催化剂进行了表征，并在微量天平中测定了催化活性。在单独使用氧化锆的实验中观察到烟灰的燃烧温度的重要降低，并且在KNO 3/ZrO 2催化剂上烟灰的催化燃烧速率也显著增强。活性增加可归因于碱金属离子，也归因于熔融硝酸钾增加了催化剂/烟灰接触。
Co−KNO3−ZrO2 and Co−ZrO2 were prepared. The concentration effect of potassium nitrate on the activity was studied for the oxidation reaction of soot. Catalysts were characterized using the techniques BET, XRD, DSC, TPR, and SEM and the catalytic activity was measured in a microbalance. An important decrease of the combustion temperature of soot is observed in experiments carried out with zirconium oxide alone and also a significant enhancement of the catalytic combustion rate of soot on KNO3/ZrO2 catalysts. The activity increase can be attributed to the alkaline metal ion and also to the increase of the catalyst/soot contact by the molten potassium nitrate.