采用表面反应改性法制备了ZrO2 SiO2(ZrSiO)表面复合物,用等体积浸渍法制备了ZrSiO负载的Ni Cu双金属催化剂,并用IR、TPD、TPSR和微反技术考察了CH4、H2O和O2在催化剂表面上的化学吸附及反应性能。结果表明,在Ni Cu ZrSiO催化剂上存在着...采用表面反应改性法制备了ZrO2 SiO2(ZrSiO)表面复合物,用等体积浸渍法制备了ZrSiO负载的Ni Cu双金属催化剂,并用IR、TPD、TPSR和微反技术考察了CH4、H2O和O2在催化剂表面上的化学吸附及反应性能。结果表明,在Ni Cu ZrSiO催化剂上存在着Ni Cu金属位,Lewis酸位Znn+和碱位Zr O-三类活性中心;CH4和H2O在金属位和Lewis酸位Znn+和碱位Zr O-的协同作用下可形成解离吸附态;CH4、H2O和O2在Ni Cu ZrSiO催化剂表面上的主要反应产物为H2和CO2,选择性均在95%以上。展开更多
The La-Ni complex oxide catalyst was prepared by solid state reactions under microwave.The structure and reducibility of the catalyst were characterized by using TG-DTA,XRD,TEM and TPR methods.At the same time the cat...The La-Ni complex oxide catalyst was prepared by solid state reactions under microwave.The structure and reducibility of the catalyst were characterized by using TG-DTA,XRD,TEM and TPR methods.At the same time the catalytic activity of oxidative dehydrogenation of ethylbenzene to styrene with carbon dioxide over the complex oxide nanoparticle was investigated.The results show that the product is K2NiF4 nanoparticles,and the size is 13 nm.The complex oxide sample had high activity for the oxidative dehydrogenation of ethylbenzene to styrene.展开更多
文摘采用表面反应改性法制备了ZrO2 SiO2(ZrSiO)表面复合物,用等体积浸渍法制备了ZrSiO负载的Ni Cu双金属催化剂,并用IR、TPD、TPSR和微反技术考察了CH4、H2O和O2在催化剂表面上的化学吸附及反应性能。结果表明,在Ni Cu ZrSiO催化剂上存在着Ni Cu金属位,Lewis酸位Znn+和碱位Zr O-三类活性中心;CH4和H2O在金属位和Lewis酸位Znn+和碱位Zr O-的协同作用下可形成解离吸附态;CH4、H2O和O2在Ni Cu ZrSiO催化剂表面上的主要反应产物为H2和CO2,选择性均在95%以上。
文摘The La-Ni complex oxide catalyst was prepared by solid state reactions under microwave.The structure and reducibility of the catalyst were characterized by using TG-DTA,XRD,TEM and TPR methods.At the same time the catalytic activity of oxidative dehydrogenation of ethylbenzene to styrene with carbon dioxide over the complex oxide nanoparticle was investigated.The results show that the product is K2NiF4 nanoparticles,and the size is 13 nm.The complex oxide sample had high activity for the oxidative dehydrogenation of ethylbenzene to styrene.
