Preparation And Application In Hydroformylation Of Higher Olefins Of Metal Organic Frameworks MOF-5 Supported Novel Metal Catalysts

Hydroformylation is one of the most important homogeneous catalytic reaction in chemical industry.The main products can be used as the key materials for the preparation of various solvents,plasticizers,surfactants and so on.In recent years,Rh and Co homogeneous catalytic systems are often used in industrial production,which have high reaction activity and selectivity,but there is still a difficult problem of separation and recovery of catalyst,especially for hydroformylation of higher olefins.Therefore,it is of great significance to study the catalytic system of hydroformylation of higher olefins.Metal-organic framework is the field of nano porous materials in the research and developed fast in these years.It has excellent physical and chemical properties such as multi-dimensional network structure,large surface area and regular pore structure which can be functionalized.These excellent characteristics make it a carrier of many guest molecules,and thus the active center of the catalyst becomes an excellent catalytic material.In this paper,the application of the most representative MOFs—MOF-5 supported noble metal in hydroformylation was studied.A series of catalysts were prepared by loading different metal particles.Besides,their catalytic performance was tested in hydroformylation of olefins.Using high-purity MOF-5 as catalyst support,the monometallic catalyst Rh@MOF-5 was prepared on rhodium.Rh-Ni@MOF-5 bimetallic catalyst was prepared from rhodium and nickel and the Rh-Cu@MOF-5 catalyst was prepared from rhodium and copper.These catalysts were characterized by XRD,FTIR,TG,SEM,TEM,EDS and so on.In order to study the catalytic performance,which were applied in the 1-hexene,1-octene and 1-decene hydroformylation.The results showed that the catalyst prepared by metal particles can maintain a complete MOF-5 crystal structure,which has obvious lattice characteristics and strong thermal stability.It can be seen that the bimetallic catalyst has higher catalytic activity than the single metal.The cyclic performance of the catalysts was tested,and the three kinds of catalysts could maintain great catalytic activity.It is beneficial to reduce the cost of industrial application.