Mesoporous Catalytic Oxidation Of Benzoin And Its Approximation Of The Study

Benzil is an significant chemical materials, It's the major intermediate forsynthesis of medicine phenytoin, mesoporous catalyst of a new type catalyst was usedinto the oxidation of benzoin and its approximate compounds firstly. In theexperiment of oxidation of benzoin to benzil, We mainly investigationed theinfluences of reaction temperature, reaction time, amount of 30% H₂O₂ and catalyst,species of catalyst and solvent. Finally we obtained two the better oxidation systems:H₂O₂ - Co/MTiO₂- pyridine and H₂O₂ or Air-Co/MCM-41-acetic acid. The twobetter oxidation systems can highly selective oxidation of benzoin to benzilsuccessfully, The conversion rate of benzoin was arrived to 100% and the selectivityof benzil exceeded 80%. In the recovery test of catalyst Co/MCM-41 and Co/MTiO₂,it proved that the two catalysts had satisfactory recovery, and the catalytic activitynearly keep the same when it was used four times. The synthetic route about oxidationof benzoin to benzil over mesoporous catalyst as catalyst is the used,green, economic and simple method. In addition we founded H₂O₂ and mesoporouscatalyst can oxidate TMT (3,4,5-Trimethoxytoluene) into CoenzymeQ₀(2,3-Dimethoxy-5-methyl-1,4-benzoquinone) without any solvent. Eventually, weexplored initially the oxidation of xylene and p-toluic acid over mesoporous catalysts.