CAJ | 학술논문

采用并流共沉淀法制备了一系列CuO/ZnO/Al2O3催化剂;利用正交设计实验考察了铜锌摩尔比、铝含量、沉淀 pH、沉淀温度、老化时间、焙烧温度等因素对催化剂平均孔径的影响.研究表明:6个因素对CuO/ZnO/Al2O3催化剂孔径影响的主次顺序为:铝含量>焙烧温度>沉淀温度>沉淀 pH>铜锌摩尔比>老化时间;)在实验考察的因素和水平范围内,以平均孔径作为主要实验指标,选出CuO/ZnO/Al2O3催化剂的最佳制备条件:铜锌摩尔比为1︰1,铝含量为5%,沉淀pH为6.0,沉淀温度为60℃,老化时间为90 min,焙烧温度为400℃.
채용병류공침정법제비료일계렬CuO/ZnO/Al2O3최화제;이용정교설계실험고찰료동자마이비、려함량、침정 pH、침정온도、노화시간、배소온도등인소대최화제평균공경적영향.연구표명:6개인소대CuO/ZnO/Al2O3최화제공경영향적주차순서위:려함량>배소온도>침정온도>침정 pH>동자마이비>노화시간;)재실험고찰적인소화수평범위내,이평균공경작위주요실험지표,선출CuO/ZnO/Al2O3최화제적최가제비조건:동자마이비위1︰1,려함량위5%,침정pH위6.0,침정온도위60℃,노화시간위90 min,배소온도위400℃.
A series of ternary CuO/ZnO/Al2O3 catalysts were prepared by the conventional co-precipitation method, and influence of preparation conditions including Cu/Zn ratio (A), aluminum content (B), pH (C), precipitation temperature (D) , aging time (E) and calcination temperature (F) on the pore size of the catalysts was investigated by orthogonal design. The experimental results show that the sequence of the importance of these factors is B>F>D>C>A>E. Further, it is suggested that the optimized conditions are as follows:Cu/Zn ratio 1:1, Al(mol%) 5%, pH 6.0, precipitation temperature 60 ℃, aging time 90 min, calcination temperature 400 ℃