论文部分内容阅读
以MCM-48为载体,采用新颖的负载方法(有机官能团化法)制备了铜基负载型催化剂.结果表明,活性组分以较高的负载量均匀地分散在载体MCM-48表面,且负载活性组分后,分子筛的结构未被明显破坏.本文首次将采用此负载方法制备的铜基MCM-48催化剂用于糠醛选择性加氢制糠醇反应,并得到了较高的活性、稳定性及糠醇选择性,该催化剂可以与商业催化剂相比,具有潜在的工业应用价值.与一维结构的MCM-41相比,三维孔道结构的MCM-48有效避免了孔堵塞,大大提高了催化剂的稳定性.引入助剂镧有利于羰基加氢,明显提高了糠醛的转化率.使用后的催化剂并未被氧化,催化剂失活的主要原因之一是积炭.
Based on MCM-48, Cu-based catalysts were prepared by a novel loading method (organofunctionalization method) .The results showed that the active components were uniformly dispersed on the surface of carrier MCM-48 at a higher loading and the loading After the active component, the molecular sieve structure was not significantly damaged.This paper for the first time using this load prepared copper-based MCM-48 catalyst for furfural selective hydrogenation of furfuryl alcohol reaction, and obtained a higher activity, stability and Furfuryl alcohol selectivity, the catalyst has potential industrial application value compared with the commercial catalyst.Compared with the one-dimensional structure MCM-41, the three-dimensional pore structure MCM-48 effectively avoids pore clogging and greatly improves the stability of the catalyst The introduction of lanthanum is beneficial to the carbonyl hydrogenation, which obviously improves the conversion of furfural.After the catalyst is used, it is not oxidized, and one of the main reasons for catalyst deactivation is carbon deposition.