Catalytic Of Ce-Modified Ru/HAP And One-Step Preparation Of 2,5-Furandicarboxylic Acid From Fructose

In present community,the claim for non-renewable natrual mine for instance fossil fuels keep on subjoin,and the non-renewable resources for instance petrifaction fuels are cut back day by day,making the chemical industry trust in fossil resources unable to uninterrupted shrinking.Thence,the becoming different and forthputting of renewable energy must be Salary even more an more heed by mickle commonwealth.Apart from them,the the becoming different and forthputting of biomass resources is the modern central issue in the development of renewable resources in the world.The primary reason is that it can be transform to a variety of compounds and has a wide-ranging of submission.2.5-Furandicarboxylic acid（FDCA）is a prospective bio-based compound.Owing to it has a structure semblance to terephthalic acid,it is deemed a reliant take the place of for petrochemical fuels and was stund by the United States in 2004.The U.S.Department of Energy has included one of 12 lofty worth-added biomass-based compounds.In this paper,Ce-Ru/HAP catalyst was squared away and characterized,the obverse of its catalytic oxidation to trim the FDCA was studied,and the hypotaxis both catalyst architecture and catalytic facade was quested.1.The Ru/HAP catalyst was readied by co-precipitation modus,and the affact of distinct burden prerequisites on the catalytic manifestation of the make ready catalyst was look into.XRD,XPS,BET,FTIR and NH₃-TPD were used to look into the architecture,morphology and exterior element fettles of the make ready catalyst.The study found that the loading of 0.75%wt Ru/HAP has good catalytic performance,the support structure is relatively complete,the concrete exterior division is larger and the distribution on the buttress is relevantly neat.2.On the foundation of the Ru/HAP catalyst,the catalyst was retrofitted by introducing from elsewhere the uncommon earth metal Ce by the sediment dethronement medium,and the affect of loading,response time,oxygen content and other requirements on the catalytic activity of the prepared catalyst were investigated.XRD,XPS,TEM and NH₃-TPD were used to cachet the structure,morphology and appearance element topsy-turvy of the square away catalyst.The results said that when the Ce loading is 8%,the catalytic result is the best.Moreover,the rare earth metal Ce is highly dispersed on the carrier HAP and the structure of the HAP is not exterminated;the composition Ce mainly being in two valency states:Ce³⁺and Ce⁴⁺.The alive of the elapsed makes the catalyst espial more oxygen tears,and both the electron metastasis between them can exaltation the circumstance of oxygen tears.3.Frame a appraise bend by HPLC,and cypher the productivity of FDCA using an outward criterion modus.Taking dimethyl sulfoxide deed the solvent,fructose as the reactant,and oxygen as the oxidant,FDCA was intended via the fructose one-step means outlay the superficies catalyst.The one-step method capable lessen the wear and tear of betwixt goods and omit more complicated separation processes.The study unearthing that what the time temperature is 160°C,the reaction time is 4 h,and the oxygen pressure is 0.2 MPa,the quantity of FDCA had the better.