Tin Cerium Bimetallic Porous Coordination Polymers For Catalytic Conversion Of Glucose To 5-hydroxymethylfurfural

As a platform compound that can be prepared from carbohydrates,5-hydroxymethylfurfural(HMF)has a wide range of applications in many fields.Glucose is considered to be one of the most suitable raw materials for the preparation of HMF.In this work,tin porous coordination polymer(IMD-SIP-SnPCP)was synthesized with imidazole and 5-sulfoisophthalic acid as ligands.IMD-SIP-SnPCP has both microporous and mesoporous structures.Due to the simultaneous presence of Lewis acid and Br(?)nsted acid active sites,IMD-SIP-SnPCP can be applied to convert glucose to HMF.The effects of reaction temperature,solvent volume ratio,and catalyst dosage on the performance of conversion of glucose to HMF over IMD-SIP-SnPCP were investigated.The yield of HMF from glucose over IMD-SIP-SnPCP reached 49.8%in the biphasic solvent of water/tetrahydrofuran.IMD-SIP-SnPCP was recycled for 5 times and the results showed that it had stable catalytic activity.Tin-cerium bimetallic porous coordination polymers(SnxCePCP,x represents the molar ratio of Sn to Ce incorporated)were prepared.The tin-cerium bimetallic porous coordination polymers have both microporous and mesoporous structures.The bimetallic porous coordination polymers possess a multifunctional catalysis capability.The coordinated Tin and Ce can as Lewis acid active sites catalyzing the isomerization of glucose to fructose.The sulphonic acid groups of 5-sulfoisophthalic acid as Br(?)nsted acid active sites catalyzing the fructose dehydration to HMF.