燃料化学学报（中英文）2026，Vol.54Issue(8)：243-253,11.DOI:10.1016/S1872-5813(26)60717-7
甲酸原位供氢下碱木质素水热液化实验研究
Hydrothermal liquefaction of alkaline lignin with in situ hydrogen supply from formic acid
摘要
Abstract
Alkali lignin,a high-volume byproduct generated from pulp and paper manufacturing as well as biomass refining,represents a promising natural feedstock for aromatic hydrocarbon production in liquid fuels owing to its high energy density and abundant aromatic moieties.However,its highly cross-linked polymeric structure hinders its efficient valorization and high-value conversion.In this work,alkali lignin was used as the feedstock to investigate the catalytic conversion into bio-oil under in situ H2 supply from formic acid.A series of Ni-Mo/h-BN bimetallic catalysts with varied metal ratios were synthesized by the impregnation method,and their physicochemical properties were systematically characterized by XPS,XRD and other techniques.The effects of reaction parameters on H2 production via aqueous-phase reforming of formic acid were first evaluated.The optimal H2 yield was achieved at a formic acid-to-water molar ratio of 1∶10 and a Ni/Mo atomic ratio of 3∶1.The H2 yield increased monotonically with temperature in the range of 220-280 ℃,reaching a maximum of 38.48 mmol.Subsequently,the influences of reaction temperature and residence time on bio-oil production from alkali lignin were examined.The highest heavy bio-oil yield(18.93％)and the maximum relative content of aromatic hydrocarbons(13.81％)were both achieved at 280 ℃.Prolonged reaction time reduced the heavy bio-oil yield and the relative abundance of aromatic hydrocarbons,while favoring the formation of furan derivatives.This work demonstrates good synergy and consistency between in situ hydrogen generation from formic acid and lignin hydrogenation in the temperature range of 240-280℃.关键词
甲酸/碱木质素/水热液化/原位供氢/生物油Key words
formic acid/alkali lignin/hydrothermal liquefaction/in situ hydrogen/bio-oil分类
能源科技引用本文复制引用
李秉硕,刘龙飞,张博文,王志财,杨天华..甲酸原位供氢下碱木质素水热液化实验研究[J].燃料化学学报（中英文）,2026,54(8):243-253,11.基金项目
Supported by the National Natural Science Foundation of China(52576222). （52576222）
