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섬유소계 바이오매스로부터 황산 촉매를 이용한 레블린산 생산
안형균(Hyeong-Gyun Ahn),이승민(Seungmin Lee),임이라(Yi-Ra Lim),김현준(Hyunjoon Kim),김준석(Jun Seok Kim) 한국신재생에너지학회 2023 신재생에너지 Vol.19 No.4
Levulinic acid (LA) derived from cellulosic biomass, serves a crucial intermediate that can be used in various chemical conversions. This study focused on optimizing the production of LA using two types of pretreated rice husk (de-ashed and delignificated cellulosic biomass) in a batch reaction system through catalytic conversion with sulfuric acid. To determine the optimal conditions, the conversions of glucose and α-cellulose were examined to compare the effects of pretreatment on the rice husk. The experimental parameters covered a broad spectrum, including temperatures ranging from 140°C to 200°C, a reaction time was up to 600 minutes, and a substrate to catalyst (acid solution) ratio of 100 g/L. The highest LA yield was 44.8%, achieved from de-ashed rice husk with 3.0 wt.% of sulfuric acid at 180°C and with a reaction time of 180 minutes. In the case of the delignificated rice husk, a LA yield of 43.6% was obtained with 3.0 wt.% of sulfuric acid at 200°C and with reaction time of 30 minutes.