不同CuO负载量CuO/SBA-16对CO催化活性的影响

Effect of different CuO loading for CuO/SBA-16 in CO oxidation

以SBA-16作为惰性材料载体,制备了不同CuO负载量的CuO/SBA-16催化剂,通过小角XRD、广角XRD、BET比表面积、DRUV-VIS、H_(2)-TPR表征及活性测试,发现不同CuO负载量的CuO/SBA-16催化剂中,CuO均作为活性物种,并以高分散的形式存在,在相对低温(<360℃)时,活性最好的为CuO负载量20%的样品,在相对高温(>360℃)时,活性最好的为CuO负载量10%的样品。

Different CuO loading for CuO/SBA-16 catalysts were prepared using SBA-16 support.XRD,BET,DRUV-VIS,H_(2)-TPR and the catalytic tests showed that the high dispersed CuO was the main active species in all CuO/SBA-16 catalysts,20%CuO/SBA-16 catalysts displayed the best activity at relatively low temperature(<360℃),and 10%CuO/SBA-16 catalysts displayed the best activity at relatively high temperature(>360℃).