摘要
Selective conversion of fructose to 1,2-propanediol(1,2-PDO)is considered as a sustainable and cost-effective alternative to petroleum-based processes,however,this approach still faces challenges associated with low efficiency and harsh reaction conditions.Here,we have successfully synthesized a novel bifunctional Ru-WO_(x)-MgO_(y) catalyst through a facile'one-pot'solvothermal method.Remarkably,this catalyst exhibits exceptional catalytic performances in the conversion of fructose to 1,2-PDO under mild reaction conditions.The yield of 1,2-PDO is up to 56.2%at 140°C for 4 h under an ultra-low hydrogen pressure of only 0.2 MPa,surpassing the reported results in recent literature(below 51%).Comprehensive characterizations and density functional theory(DFT)calculations reveal that the presence of oxygen vacancies in the Ru-WO_(x)-MgO_(y) catalyst,serving as active acidic sites,facilitates the chemoselective cleavage of C-C bonds in fructose,which leads to the generation of active intermediates and ultimately resulted in the high yield of 1,2-PDO.
基金
the financial support from the Natural Science Foundation of Chongqing(CSTB2022NSCQ-MSX0458)
the State Key Laboratory of Coal Mine Disaster Dynamics and Control(2011DA105287-MS202203)
the Joint Fund for Innovation and Development of Chongqing(CSTB2022NSCQ-LZX0030)
the financial support from the National Natural Science Foundation of China(22168027 and 22308169)
the financial support from the Natural Science Foundation of Chongqing(cstc2021jcyj-msxmX0741)
the financial support from the National Natural Science Foundation of China(22105028)
the Natural Science Foundation of Chongqing(cstc2021jcyj-msxmX0572)。
