氢解
催化作用
铼
化学
钌
铑
X射线光电子能谱
选择性
无机化学
贵金属
多相催化
有机化学
化学工程
工程类
作者
Emanuel M. Virgilio,C.L. Padró,M.E. Sad
出处
期刊:Chemcatchem
[Wiley]
日期:2023-02-13
卷期号:15 (5)
被引量:4
标识
DOI:10.1002/cctc.202201618
摘要
Abstract This study reports the selective obtaining of butanediols, mainly 23BDO and 12BDO isomers, by C−O hydrogenolysis of erythritol on Ru (2 %wt.) supported on titania at 473 K and 25 bar H 2 and their modification with Re species that improve the selectivity to C−O hydrogenolysis over other reactions (C−C hydrogenolysis, dehydration, etc). The dependence of the catalytic activity with reaction temperature and reactants concentrations is also discussed. Characterization by XPS, TEM and TPR indicates that the surface of rhenium modified Ru is formed by small particles (<3 nm) of Ru 0 in contact with Re +IV (Re/Ru molar ratio ≈1). Over this catalyst (Ru/ReO x /TiO 2 ) close or even higher BDO yields than previous values reported on other noble metals were obtained, making it very attractive since Ru is more economical than Pt, Ir or Rh metal. Furthermore, we demonstrate that Ru/ReO x /TiO 2 was also stable and allowed to be reused in at least three consecutive reactions.
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