Preparation of γ-butyrolactone by catalytic oxidation of tetrahydrofurfuryl alcohol with mesoporous carbon nitride supported by vanadium
Carbonyl groups are important oxygen-containing functional groups in organic chemistry,and many organic chemical raw materials contain carbonyl functional groups(in-cluding aldehydes,ketones,acids,etc.).The selective oxidative cleavage reaction of C-C and C-H bonds is one of the important pathways for generating carbonyl functional groups.In this paper,molecular oxygen was used as oxidant,and tetrahydrofurfuryl alcohol was used as substrate for selective oxidation to prepare γ-butyrolactone(GBL),a new system for catalytic oxidation of butyrolactone to prepare carbonyl compounds has been developed.Ex-plored the effects of reaction temperature,reaction pressure,and reaction time on catalytic activity and the cyclic stability of catalyst use.Under the action of V/MCN catalyst,the con-version rate of tetrahydrofurfuryl alcohol and the selectivity of GBL reached 84.6%and 92.8%,respectively.After 20 cycles of use,there was no significant decrease in catalyst ac-tivity.The test results indicate that the active center of the catalyst is a dispersed vanadium oxide species,and MCN material as an alkaline carrier can effectively inhibit the deep oxi-dation of GBL.
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