A series of catalysts were prepared for sugar alcohols production to overcome the deficiencies of the previous reported catalysts,such as low yield of sugar alcohols,single functi on,in stability,and con troversial ro...A series of catalysts were prepared for sugar alcohols production to overcome the deficiencies of the previous reported catalysts,such as low yield of sugar alcohols,single functi on,in stability,and con troversial role of active sites.The role of each metal and their syn ergistic-cooperati on was discussed in detail with a combi nation of conditional experiments and characterizati ons.The results indicated that bifunctional Nig.ggFetAli.ss catalyst has unique structure with superparamagnetism and excellent activity.The(111)and(200)planes of metallic Ni are the hydrogenation active phases and preferentially exposed on Ni-Al-O_(x) spinel.The desired arabitol or mannitol was obtained by tuning the ratio of Bronsted and Lewis acid sites.The recycling tests indicated that the unique structure of the prepared Ni-based catalyst can suppress leaching and poisoning,which has high textural stability and activity.展开更多
基金supported by National Key Research and Development Program of China(Nos.2019YFB1503903,2019YFB1503904)the National Natural Science Foundation of China(Nos.21676223,21978248)the Natural Science Foun-datlon of Fujian Province of China(Nos.2019J06005,2019J01246).
文摘A series of catalysts were prepared for sugar alcohols production to overcome the deficiencies of the previous reported catalysts,such as low yield of sugar alcohols,single functi on,in stability,and con troversial role of active sites.The role of each metal and their syn ergistic-cooperati on was discussed in detail with a combi nation of conditional experiments and characterizati ons.The results indicated that bifunctional Nig.ggFetAli.ss catalyst has unique structure with superparamagnetism and excellent activity.The(111)and(200)planes of metallic Ni are the hydrogenation active phases and preferentially exposed on Ni-Al-O_(x) spinel.The desired arabitol or mannitol was obtained by tuning the ratio of Bronsted and Lewis acid sites.The recycling tests indicated that the unique structure of the prepared Ni-based catalyst can suppress leaching and poisoning,which has high textural stability and activity.
