金属助剂改性MnO2/γ-Al2O3催化空气氧化含硫废水  

Catalytic oxidation of sulfur wastewater with MnO2/γ-Al2O3 modified by metal

作　　者：崔雯谣 张旭琦 王品航 吴迪 程宝箴 吕树祥 CUI Wenyao;ZHANG Xuqi;WANG Pinhang;WU Di;CHENG Baozhen;LV shuxiang(College of Chemical Engineering and Materials Science,Tianjin University of Science&Technology,Tianjin 300457,China)

机构地区：[1]天津科技大学化工与材料学院,天津300457

出　　处：《中国皮革》2020年第2期57-63,共7页China Leather

摘　　要：采用等体积浸渍法对MnO2/γ-Al2O3催化剂进行金属助剂改性。采用XRD、SEM、N2-吸附、脱附和H2-TPR对催化剂进行表征。在常温常压下、以空气为氧化剂、Cu-MnO2/γ-Al2O3为催化剂,催化氧化含硫废水来评价其脱硫性能。结果表明:在反应温度25℃,催化剂用量1.0g/L时,催化氧化硫离子含量为960mg/L的皮革脱毛废水2.5h后脱硫率达到90%,催化剂重复使用5次后催化活性并没有明显的降低。MnO2/γ-Al2O3 catalyst was modified with metal by equal volume impregnation method.The catalysts were characterized by x-ray diffraction(XRD),scanning electron microscope(SEM),N2-adsorption desorption and H2 programmed temperature reduction method(H2-TPR),respectively.The desulfurization performance of sulfurcontaining wastewater was evaluated by catalytic oxidation with air as oxidant and MnO2/γ-Al2O3 as catalyst at room temperature and atmospheric pressure.The results show that the amount of catalyst is 1.0 g/L,the desulfurization rate of leather unhairing wastewater of sulfur ion(960 mg/L)can reach 90%at 25°C in 2 h,and the catalytic activity does not decrease significantly after the catalyst is reused for 5 times.

关 键 词：MnO2/γ-Al2O3 金属改性 催化氧化 皮革 脱毛废水 

分 类 号：TS59[轻工技术与工程—皮革化学与工程]