東北大学 · 공학
Haixin Guo 교수의 연구실은 지속 가능한 에너지와 화학물질을 위한 생물질 기반 촉매 기술 개발에 중점을 두고 있습니다. 특히, 셀룰로오스 및 당류를 활용한 5-하이드록시메틸프ور프랄(5-HMF) 및 5-에톡시메틸프루랄(5-EMF)과 같은 플랫폼 화학물질의 효율적 전환을 위한 고체 산 촉매 및 이온 액체 시스템의 개발을 주요 연구 방향으로 삼고 있습니다. 또한, 리파르크티브한 생물질 분해 및 리소스 재활용을 위한 환경 친화적 공정 기술, 예를 들어 딤큰화제를 이용한 리그닌 제거 및 레바리네이트 에스터 합성 등도 진행 중입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
A cellulose-derived carbonaceous solid acid catalyst that has superparamagnetism was synthesized by incomplete hydrothermal carbonization of cellulose followed by Fe3O4 grafting and –SO3H group functionalization. The as-prepared superparamagnetic carbon catalyst contained –SO3H, –COOH, and phenolic –OH groups and exhibited good catalytic activity for the hydrolysis of cellulose in either an ionic liquid phase or aqueous phase. A total reducing sugar (TRS) yield of 68.9% was obtained with ionic l
Hydrogen sulfate ionic liquid additives with aluminum chloride catalyst in ethanol were found to promote efficient (30 min) one-pot, one-step transformation of glucose into 5-ethoxymethylfurfural (5-EMF) in 37% yields. Spectroscopic measurements (FT-IR, 1H NMR) showed that ionic liquids form multiple hydrogen bonds with glucose and promote its ring opening through ionic liquid–AlCl3 complexes to enable formation of 5-EMF via 5-hydroxymethylfurfural (5-HMF). Reactions performed in dimethyl sulfox
As one of the substitutes for traditional fossil energy, the biomass resource has attracted extensive attention. Levulinate esters (LEs) are important green and high value-added chemical molecules. Catalytic routes based on acid catalysts are developed for the production of levulinate esters from various biomass-derived materials. In this review, the catalytic route for preparation of levulinate esters from C5/C6 carbohydrates is summarized. The effects of homogeneous and heterogeneous acid syst
La-based metal oxide materials are environmentally friendly and show promise for phosphate adsorption. A series of Al-doped perovskite oxides, such as LaFe<sub><i>x</i></sub>Al<sub>1-<i>x</i></sub>O<sub>3</sub>, were prepared using a facile citric acid-assisted sol-gel method. The characterization results demonstrated that with optimized Al doping, there was a significant increase in the specific surface area and increased defect content of perovskite oxide LaFe<sub><i>x</i></sub>Al<sub>1-<i>x</
Renewable resources must be upgraded to platform chemicals and biofuels, especially furanic compounds such as 5-hydroxymethylfurfural (5-HMF) and 5-ethoxymethylfurfural (5-EMF), to meet the needs of a sustainable society. This review examines chemocatalytic approaches to 5-EMF via alcoholysis of 5-(halomethyl)furfural or etherification of 5-HMF with attention being given to direct catalytic conversion of biomass-derived materials into 5-EMF. Emphasis is placed on the reaction mechanisms and path
Plant-based waste biomass with lignocellulose as an important component is produced in large quantities worldwide every year. The components of lignocellulose that typically exhibit high utilization value include cellulose and hemicellulose, as well as pentoses and hexoses derived from their hydrolysis. As a pretreatment for the hydrolysis process, delignification is a pivotal step to enhance cellulose/hemicellulose accessibility and achieve high yields of fermentable sugars. Additionally, deep
