文献类型：期刊文献

英文题名：Energy-efficient pyrolysis strategy driven by acid-base synergy for selective production of value-added oxygenates from biomass waste

作者：Zhu, Xiaojian[1,2,3];Xia, Shengpeng[2,3];Liu, Yide[1];Liang, Junming[4];Hao, Yusi[1];Li, Zhifeng[1];Chen, Dongyu[1];Zhao, Kun[2,3];Zhao, Zengli[2,3];Zheng, Anqing[2,3]

机构：[1]Shenyang Agr Univ, Coll Engn, Shenyang 110866, Peoples R China;[2]Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China;[3]Univ Sci & Technol China, Sch Energy Sci & Engn, Guangzhou 510640, Peoples R China;[4]Guangdong Ocean Univ, Sch Mech Engn, Zhanjiang 524088, Peoples R China

年份：2026

卷号：193

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：SCI-EXPANDED(收录号：WOS:001622319500002)、、WOS

基金：The authors acknowledge the National Key Research and Development Program of China (Grant 2025YFE0112600) , Key Research and Development Program of Guangzhou (Grant 2023B03J1330) , Guangdong Basic and Applied Basic Research Foundation (Grants 2023B1515020048 and 2023B1515020093) , Liaoning Province Department of Education fund (YTMS20231282) , Ministry of Agriculture and Rural Affairs Key Laboratory Open Project (KLERUAR2022-03) , and Key Laboratory of Energy Resource Utilization, MARA, P. R. China for their financial supports of this work.

语种：英文

外文关键词：Biomass; Pyrolysis; Pretreatment; Anhydrosugar; AAEMs

外文摘要：Developing energy-efficient pyrolysis strategies for the selective conversion of biomass into value-added oxygenated chemicals remains a significant challenge. Herein, an innovative pyrolysis strategy is proposed, leveraging the synergy between the inherent alkali and alkaline earth metals (AAEMs) in biomass and trace exogenous inorganic acids to reduce activation energy, thereby enabling the efficient and directional low-temperature conversion of biomass into anhydrosugars. The effects of inorganic acid types, loading amounts, and operating conditions on the product distribution from the low-temperature pyrolysis of Salix psammophila were systematically investigated, and the pyrolysis reaction kinetics and mechanism were also explored. The results showed that loading 1 wt% sulfuric acid or 1.25 wt% phosphoric acid onto Salix psammophila enabled its directional pyrolysis at 320 degrees C, increasing the yield of levoglucosan from < 0.5 wt% to a maximum of 13.24 wt%. Kinetic analysis and mechanistic investigation revealed that sulfuric acid exhibited lower activation energy compared to phosphoric acid, acting as an acid catalyst to selectively convert cellulose into levoglucosan at low temperatures, while the presence of AAEMs suppressed further dehydration reaction to form levoglucosenone. These findings provide a simple and energy-efficient strategy for the selective and efficient production of value-added oxygenated chemicals from waste biomass.