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Komal N. Patil,Divya Prasad,Vilas K. Manoorkar,Jayesh T. Bhanushali,Arvind H. Jadhav,Bhari Mallanna Nagaraja 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Production of c-butyrolactone (GBL) from vapour-phase dehydrocyclization of biomass derived 1,4-butanediol is considered as more sustainable and significantly commercial industrial process. In thisregards, Cu-based catalyst was designed with ZnAl2O4 spinel support and CeO2 as a promoter to obtainCu/ZnAl2O4-CeO2 catalyst with different Cu:Ce mass ratio. The catalysts were characterized by XRD,H2-TPR, FT-IR, CO2-TPD, FE-SEM and BET analysis and then tested for the production of cbutyrolactone(GBL) by dehydrocyclization of 1,4-butanediol (BDO). Further, various reaction parameterswere optimized and their effects on the catalytic activity were studied to obtain maximum yield towardsdesired product at ambient reaction conditions. The results revealed that metallic Cu species and CeO2 asa promoter were highly dispersed on ZnAl2O4 support with appreciable surface area. Additionally, CeO2as a promoter prevented agglomeration, increased the basic character of catalyst to selectively obtain GBLas a major product. 10 wt% Cu/ZnAl2O4-10 wt% CeO2 catalyst exhibited excellent yield (94%) towards GBLproduct with tetrahydrofuran (THF) as the only by-product and demonstrated consistent activity andselectivity during 26 h time on stream. Further, the optimized catalyst displayed appreciable recyclabilityperformance up to seven recycles without much loss in its catalytic performance making the catalyst feasibleat industrial scale.