Ru-La/SiO，催化甘油氢解合成乙二醇反应

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中图分类号：TQ032.4 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.03.009

Abstract：The hydrogenolysis of glycerol into high-value diols（ 1，2 -propanediol， 1，3 -propanediol and ethylene glycol）isveryatractive among theroutes for glycerolutilization.To improve theselectivityof ethyleneglycol，a series of Ru-based catalysts were prepared by impregnation methodfor thehydrogenolysis of glycerol using metal Ru as the main active component， SiO2 as the carrier，and different metal oxides as promoter.Based on this，the effcts of additive kindsand quantities，removal of Cl"，metal loading amount，reduction atmosphere and reduction temperature on the catalytic performance of the prepared catalysts were investigated.Further，these catalysts were characterized by H2 -TPR， CO2 -TPD，NH 3 -TPD，TEM，CO chemisorption and N2 adsorption-desorption． The resultsrevealed that the catalyst Ru-La/SiO 2 with Cl-removal by water washing possessed a superior catalytic performance：the selectivity of ethylene glycol reached 51.4% ，and the overall selectivity of diols was 91.3% over RuLa/SiO 2 prepared under its suitable conditions.La species can decrease the reduction temperature of Ru and alter theacidity/basicityof thecatalyst；theacidityandbasicityofthecatalystaecttheglycerolconversionand ethylene glycolselectivity，respectively；theparticlesizeoftheactivemetalRuisnegativelycorrelatedwithglycerolconversion but positively correlated with ethylene glycol selectivity.

Key words：bio-glycerol；catalytic hydrogenolysis；ethylene glycol； Ru based catalyst; structureeffective relationship

1前言

生物柴油作为化石燃料的替代品逐渐受到重视。（剩余13207字）