Trivalent metal ions M3+ in M0.02Cu0.4Mg5.6Al1.98(OH)16CO3 layered double hydroxide as catalyst precursors for the hydrogenolysis of glycerol

Trivalent metal ions M3+ in M0.02Cu0.4Mg5.6Al1.98(OH)16CO3 (M = Ru, Re) layered double hydroxides (LDHs) were successfully synthesized by coprecipitation. Bimetallic M-Cu/solid base catalysts with high metal dispersion were obtained after calcination and H2 reduction of these LDH precursors. These catalysts exhibited excellent performances for the hydrogenolysis of biomass-derived glycerol under mild conditions. The catalysts were stable when recycled five times. Characterizations indicated that the addition of Ru or Re enhanced the adsorption and activation of hydrogen on the surface of catalysts, which contributed to the high conversion of glycerol.

摘要采用共沉淀法合成了M0.02Cu0.4Mg5.6Al1.98(OH)16CO3 (M = Ru, Re)水滑石前驱体, 然后经焙烧和还原制备了铜分散度较高的双功能M-Cu/固体碱催化剂. 这些双功能催化剂在粗甘油氢解制备丙二醇反应中表现出了很好的催化活性. 表征结果证明, M的加入增强了催化剂表面氢的吸附和活化, 进而促进了甘油的转化.

Graphical AbstractTrivalent metal ions M3+ in M0.02Cu0.4Mg5.6Al1.98(OH)16CO3 (M = Ru, Re) layered double hydroxides (LDHs) derived M-Cu/solid base catalysts show excellent performance for the hydrogenolysis of biomass-derived glycerol under mild conditions.Figure optionsDownload as PowerPoint slide