南华大学学报（自然科学版）2026，Vol.40Issue(2)：32-40,48,10.DOI:10.19431/j.cnki.1673-0062.2026.02.004
La-Ce改性生物炭催化剂的制备及在甲苯催化氧化中的应用
Catalytic oxidation of toluene over La-Ce co-modified porous biochar catalysts
摘要
Abstract
A suite of La-Ce co-ameliorated three-dimensionally hierarchical porous(3-DHP)biochar catalysts were manufactured by immersion method for toluene abatement.SO2 and H2 O imposed negative effects on toluene removal efficiency(Etoluene)and CO2 se-lectivity(SCO2),whereas O2 exhibited a positive influence on them.18%La0.33Ce0.67/BAC combines the physicochemical properties of 18%La0.33Ce0.67/BAP and 18%La0.33Ce0.67/WSP to form a favorable 3-DHP structure,enlarging reaction contact areas and enhancing active sites along with reinforcing the mass transfer and diffusion,thereby strengthening tol-uene abatement.In comparison with 18%La/BAC and 18%Ce/BAC,18%La0.33Ce0.67/BAC rendered better catalytic behaviors benefitting from the cooperative effect between La and Ce oxides,which resulted in higher proportion of Ce3+,enhanced redox performance,more oxygen vacancies and reactive oxygen species(ROSs),good reactive oxygen migra-tion and superior metal oxide dispersion.关键词
多孔生物炭/甲苯催化氧化/CO2选择性/镧铈氧化物/活性氧物种Key words
hierarchical porous biochar/catalytic oxidation of toluene/CO2 selectivity/La-Ce oxides/reactive oxygen species分类
资源环境引用本文复制引用
谭宇恒,孙铖,高磊,解金柯,李彩亭,全裕凯,白若涛,张敬硕..La-Ce改性生物炭催化剂的制备及在甲苯催化氧化中的应用[J].南华大学学报（自然科学版）,2026,40(2):32-40,48,10.基金项目
湖南省自然科学基金项目(2024JJ5335) （2024JJ5335）
湖南省教育厅科研重点项目(24A0312) （24A0312）
