Lanthanide Metal Coordination Polymers For Catalytic Conversion Of Sugers To 5-HMF

As an important platform compound,5-hydroxymethylfurfural(HMF)has been widely used in fine chemicals,energy,medicine,etc.In recent years,the produce of HMF has received extensive attention.Glucose and fructose are considered to be the most suitable raw materials for the preparation of HMF.Porous coordination polymer materials are widely used in heterogeneous catalysis because of their unique structural characteristics.In this paper,taurine-CePCP was synthesized by a simple method using taurine,trimesic acid and cerium nitrate as raw materials.The taurine-CePCP was characterized by scanning electron microscopy.It was found that the addition of taurine significantly changed the morphology of taurine-CePCP compared with the morphology of CePCP.A series of characterizations prove that taurine-CePCP is a mesoporous material containing-sulfonic acid groups.The effects of different factors on the performance of taurine-CePCP catalyzed fructose conversion reaction were investigated.When the reaction performed in ethanol and water,67.2%of HMF yield and 11.6%of EMFyield can be achieved within 1 h.The catalyst was reused five times,and the yield of HMF was not significantly reduced,indicating that the catalytic performance of the catalyst was stable.In order to prepare HMF from glucose,SnxLaPCP(x is the molar ratio of Sn to La)was prepared with solvothermal method.A series of characterizations demonstrate that the catalyst is a bifunctional microporous/mesoporous material.When the reaction performed in THF and water,58.2%of HMF yield and 81.7%of glucose conversion can be achieved.The catalyst was recycled 5 times,and the measured change in HMF yield was small,indicating that Sn4LaPCPhas stable catalytic activity.