Catalysis Communications ( IF 3.4 ) Pub Date : 2018-11-09 , DOI: 10.1016/j.catcom.2018.11.004 Xue Li , Mei Xiang , Dongfang Wu
Hierarchically porous SAPO-11 zeolite (M-SAPO-11) was synthesized and used as support to prepare a series of Cu or/and Ni catalysts. Hydrogenolysis of glycerol was then conducted over the prepared metal-acid bifunctional catalysts. An M-SAPO-11-supported bimetallic catalyst with the Cu/Ni ratio of 2/1 shows extraordinary catalytic activity. The mesopores generated in M-SAPO-11 alleviate the diffusion barriers of reactants that are present in conventional SAPO-11 microporous channels during the liquid-phase reaction. Besides, the added Ni promotes the formation of highly dispersed Cu active phase, which makes the bimetallic catalyst superior to monometallic one. Furthermore, temperature has a greater impact on glycerol conversion in various technological parameters.
中文翻译:
甘油的氢解在双金属铜NI C atalysts支承在分级多孔SAPO-11沸石
合成了多孔多孔SAPO-11沸石(M-SAPO-11),并用作载体来制备一系列Cu或/和Ni催化剂。然后在制备的金属-酸双官能催化剂上进行甘油的氢解。Cu / Ni比为2/1的M-SAPO-11-负载双金属催化剂显示出非凡的催化活性。M-SAPO-11中产生的中孔减轻了液相反应期间常规SAPO-11微孔通道中存在的反应物的扩散壁垒。此外,添加的镍促进了高度分散的铜活性相的形成,这使得双金属催化剂优于单金属催化剂。此外,温度在各种技术参数中对甘油转化的影响更大。