【摘要】 采用溶胶-凝胶法制备出超细CuO-CaO/SiO2催化剂,用XRD、BET、TEM、XPS、TPR对催化剂结构进行了表征.将催化剂用于糠醛催化加氢反应,制备2-甲基呋喃,研究了活性组分负载量对催化剂结构及性能的影响.结果表明,载体对活性组分的分散能力随着负载量的减少而增大;催化剂的比表面积和孔体积随负载量的增加而减小,而孔径逐渐增大;活性组分与载体之间存在较强的相互作用.催化剂在糠醛加氢反应中表现出很高的活性;选取适宜的活性组分负载量,可高选择性制取2-甲基呋喃.更多还原

【Abstract】 CuO\|CaO/SiO\-2 ultrfine catalysts were prepared by sol\|gel technique. The structure of the catalysts was characterized by XRD, BET, TEM, XPS and TPR. The catalysts were applied for selective hydrogenation of furfural to 2\|methylfuran. Influence of copper content on the structure and catalytic performance of Catalysts was discussed. The results show that the active components disperse highly on the support surface when copper content is lower. The specific surface area and pore volume decrease with the increasing of copper content. But pore diameter increases gradually. There is more powerful interaction between active component and support. The catalysts exhibit excellent activity in the hydrogenation reaction of furfural. The high selectivity of 2\|methylfuran is received at suitable copper content.更多还原