New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Sulfuric Acid Catalytic Conversion to Levulinic Acid from Cellulosic Biomass

섬유소계 바이오매스로부터 황산 촉매를 이용한 레블린산 생산

  • Hyeong-Gyun Ahn (Department of Chemical Engineering, Kyonggi University) ;
  • Seungmin Lee (Department of Chemical Engineering, Kyonggi University) ;
  • Yi-Ra Lim (Department of Chemical Engineering, Kyonggi University) ;
  • Hyunjoon Kim (Department of Chemical Engineering, Kyonggi University) ;
  • Jun Seok Kim (Department of Chemical Engineering, Kyonggi University)
  • Received : 2023.11.14
  • Accepted : 2023.11.24
  • Published : 2023.12.25
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Abstract

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℃ to 200℃, 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℃ 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℃ and with reaction time of 30 minutes.

Keywords

Acknowledgement

본 연구는 산업통산자원부의 'MTHF 생산을 위한 중간체(르블린산, 퍼퓨랄 등) 생산 기술 개발'의 일환으로 수행되었습니다(과제 번호 : RS-2022-00156181).

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