CAJ | 학술논문

采用羟基磷灰石和镁铝水滑石两种固体碱为载体制备了Ru催化剂，通过N2物理吸附、扫描电子显微镜、高分辨透射显微镜、X 射线衍射分析表征了形貌和物理化学性能，并与纳米碳纤维负载的Ru催化剂（Ru/CNFs）在无碱促进剂及有碱促进剂存在下催化山梨醇氢解制备二元醇的活性进行了比较。结果表明，固体碱负载的 Ru催化剂，在无碱促进剂的条件下在山梨醇氢解中均表现出与 Ru/CNFs 相当的催化活性。其中镁铝水滑石负载的Ru 催化剂在优化的制备条件下，其催化活性优于加入碱促进剂的 Ru/CNFs催化体系，乙二醇和丙二醇等目标产物选择性更高，副产物减少，同时还免除了碱助剂的后续分离和回收，具有良好的应用前景。
채용간기린회석화미려수활석량충고체감위재체제비료Ru최화제，통과N2물리흡부、소묘전자현미경、고분변투사현미경、X 사선연사분석표정료형모화물이화학성능，병여납미탄섬유부재적Ru최화제（Ru/CNFs）재무감촉진제급유감촉진제존재하최화산리순경해제비이원순적활성진행료비교。결과표명，고체감부재적 Ru최화제，재무감촉진제적조건하재산리순경해중균표현출여 Ru/CNFs 상당적최화활성。기중미려수활석부재적Ru 최화제재우화적제비조건하，기최화활성우우가입감촉진제적 Ru/CNFs최화체계，을이순화병이순등목표산물선택성경고，부산물감소，동시환면제료감조제적후속분리화회수，구유량호적응용전경。
Hydrogenolysis of biomass-derived sorbitol into ethylene and propylene glycols, an alternative route for petroleum based process, usually takes place over metal catalyst with a base promoter. The presence of soluble bases introduces additional problems for their separation and recovery, increasing the complexity and operating cost of the process. Sometimes, these base additives result in the formation of more side-products. Ru supported on various solid bases to facilitate catalyst recovery and recycle was investigated. Ru catalysts supported on 2 solid bases, hydrotalcite (HT) and hydroxyapatite, were prepared and investigated for sorbitol hydrogenolysis activity in base-free aqueous solution, and their performance was compared with that of Ru catalyst supported on carbon nanofibers (Ru/CNFs), with and without promotion by CaO. The physico-chemical properties of both supports and the supported Ru catalysts were characterized by SEM, N2 physisorption, XRD, TEM and CO2-TPD. The results indicate that Ru particles well disperse on the basic support and show as good activity as Ru/CNFs catalysts in sorbitol hydrogenolysis. The Ru catalyst using HT calcined at 500°C as a support shows the best catalytic performance with promoted sorbitol conversion, higher selectivity to desired glycols and fewer byproducts. As a result, Ru/HT is believed to be a promising catalyst for sorbitol hydrogenolysis without added base. This is relevant to the development of a green process to produce glycols from biomass.