CAJ | 학술논문

以等体积超声浸渍法制备负载型 Fe2O3/γ-Al2O3催化剂，采用 XRD、SEM、N2吸附仪对催化剂结构进行表征．研究非均相催化剂 Fe2O3/γ-Al2O3催化 H2O2氧化愈创木酚的降解反应，分别考察催化剂铁的负载量、催化剂加入量、H2O2加入量、初始 pH 对愈创木酚去除效果的影响．结果表明：该催化剂对降解愈创木酚具有较好的效果，在愈创木酚质量浓度100,mg/L、反应温度75,℃、催化剂加入量6,g/L、H2O2(质量分数30%)加入量0.030,5,mol/L、pH 6.10、反应时间80,min的条件下，愈创木酚的去除率高达92.6%．此外，该非均相体系在pH 3.0～9.0范围内都有较高的催化活性，这表明该催化剂克服了某些类 Fenton 催化剂在中性、碱性环境低效率的问题．催化剂重复5次使用后稳定性高，铁浸出较低，对反应影响可以忽略．
이등체적초성침지법제비부재형 Fe2O3/γ-Al2O3최화제，채용 XRD、SEM、N2흡부의대최화제결구진행표정．연구비균상최화제 Fe2O3/γ-Al2O3최화 H2O2양화유창목분적강해반응，분별고찰최화제철적부재량、최화제가입량、H2O2가입량、초시 pH 대유창목분거제효과적영향．결과표명：해최화제대강해유창목분구유교호적효과，재유창목분질량농도100,mg/L、반응온도75,℃、최화제가입량6,g/L、H2O2(질량분수30%)가입량0.030,5,mol/L、pH 6.10、반응시간80,min적조건하，유창목분적거제솔고체92.6%．차외，해비균상체계재pH 3.0～9.0범위내도유교고적최화활성，저표명해최화제극복료모사류 Fenton 최화제재중성、감성배경저효솔적문제．최화제중복5차사용후은정성고，철침출교저，대반응영향가이홀략．
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.