天津科技大学学报Issue(4)：30-34,5.DOI:10.13364/j.issn.1672-6510.2014.04.007
非均相Fe2O3/γ-Al2O3催化降解木质素模型物愈创木酚
Catalytic Oxidation of Lignin Model Compound Guaiacol with Fe2O3/γ-Al2O3 Catalyst
摘要
Abstract
Fe2O3/γ-Al2O3 heterogeneous catalyst was prepared with wet impregnation method and was characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),and N2 adsorption. The catalyst was used for the catalytic oxi-dation of guaiacol. The effects of iron loading,catalyst dosage,initial concentration of hydrogen peroxide and initial pH on the removal efficiency of guaiacol were investigated. The results show that this new catalyst is highly effective for the degra-dation of guaiacol. With 100 mg/L of the initial concentration,an initial pH of 6.1,t=75,℃,6 g/L catalyst,0.030,5,mol/L hydrogen peroxide(30%),the removal efficiency of guaiacol reached 92.6%within 80,min. Moreover,the catalytic activity was very good when pH ranged 3.0-9.0. This indicates that the use of Fe2O3/γ-Al2O3 can deal with the problem of low effi-ciency of Fenton-like reaction when pH is neutral and even alkaline. Fe2O3/γ-Al2O3 exhibits low iron leaching,good struc-tural stability and no loss of performance after recycling five times.关键词
Fe2O3/γ-Al2O3/催化氧化/愈创木酚/过氧化氢Key words
Fe2O3/γ-Al2O3/catalytic oxidation/guaiacol/H2O2分类
资源环境引用本文复制引用
唐玲玲,卢明辉,高璐璐,吕树祥..非均相Fe2O3/γ-Al2O3催化降解木质素模型物愈创木酚[J].天津科技大学学报,2014,(4):30-34,5.基金项目
天津市应用基础与前沿技术研究重点资助项目(14JCZDJC40600)；天津科技大学科学研究基金资助项目(20110110) （14JCZDJC40600）
