采用浸渍法制备了2个系列的Ru/Mn-Ce/TiO2及Ru/TiO2催化剂,并用XRD、TEM、BET等方法对催化剂进行表征.在T=270℃和Po2=1.5MPa条件下,在间歇式反应釜中对丁二酸进行降解实验.结果表明60min内丁二酸降解的总有机碳(TOC)去除率为80%～99.8%;在钌含量相同的情况下,Ru/Mn-Ce/TiO2催化剂的催化活性高于Ru/TiO2催化剂;Ru含量较低的情况下,Mn、Ce对提高催化活性有很大作用,但Ru含量增加时Mn、Ce的作用减弱;氢还原的温度对Ru/TiO2系列催化剂的催化氧化活性有明显影响,500℃还原钌所得催化剂对丁二酸的催化氧化活性优于350℃.
Two series of catalysts composed of Ru/Mn-Ce/TiO2 and Ru/TiO2 were prepared by impregnating method and characterized with XRD, TEM and BET. Degradation of succinic acid in aqueous solution was carried out using a slurry autoclave at T=270℃ and Po2=1.5MPa. The results showed that TOC abatements for succinic acid were at the range of 80.0%～99.8% within 60 min. Ru/Mn-Ce/TiO2 catalysts exhibited higher catalytic activity than that of Ru/TiO2 catalysts when loading the same content of Ru, Mn and Ce played a very important role for increasing catalytic activity for lower Ru loading catalysts, however the effectiveness of Mn and Ce became weak when a higher content of Ru was loaded. The catalytic activity of series Ru/TiO2 catalysts was obviously influenced by hydrogen reduction temperature. Catalysts obtained by reduction of Ru at 500℃ were superior to that at 350℃ in succinic acid catalytic oxidation.
参考文献
| [1] | Vedprakash S. Mishra;Vijaykumar V. Mahajani;Jyeshtharaj B. Joshi .Wet Air Oxidation[J].Industrial & Engineering Chemistry Research,1995(1):2-48. |
| [2] | Luck F .A review of industrial catalytic wet air oxidation process[J].Catalysis Today,1996,27:195-202. |
| [3] | Zhong Yi Ding;Michael A. Frisch;Lixiong Li;Earnest F. Gloyna .Catalytic Oxidation in Supercritical Water[J].Industrial & Engineering Chemistry Research,1996(10):3257-3279. |
| [4] | Levec J .Wet oxidation processes for treating industrial wastewaters[J].Chemical and Biochemistry Engineering Quarterly,1997,11(01):47-58. |
| [5] | Gloyna E F;Li L .Supercritical water oxidation research and development update[J].Environmental Progress,1995,14(03):182-192. |
| [6] | Qin J;Zhang Q;Chuang K T .[J].Applied Catalysis B:Environmental,2001,29:115-123. |
| [7] | Delanoe F;Acedo B;Karpel N .Relationship between the structure of Ru/CeO2 catalysts and their activity in the catalytic ozonation of succinic acid aqueous solution[J].Applied Catalysis B:Environmental,2001,29:315-325. |
| [8] | Yan Liu;Mengfei Luo;Zhaobin Wei;Qin Xin;Pinliang Ying;Can Li .Catalytic oxidation of chlorobenzene on supported manganese oxide catalysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2001(1):61-67. |
| [9] | Prousek J .Advanced oxidation processes for water treatment. chemical processes[J].Chemicke Listy,1996,90:229-237. |
| [10] | Laetitia Oliviero;Jacques Barbier Jr;Daniel Duprez;Haifa Wahyu;Jack W.Ponton;Ian S.Metcalfe;Dionissions Mantzavinos .Wet air oxidation of aqueous solutions of maleic acid over Ru/CeO_2 catalysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2001(1):1-12. |
| [11] | Gallezot P.;Perrard A.;Isnard P.;Chaumet S. .CATALYTIC WET AIR OXIDATION OF ACETIC ACID ON CARBON-SUPPORTED RUTHENIUM CATALYSTS[J].Journal of Catalysis,1997(1):104-109. |
| [12] | Duprez D;Delanoe F;Barbier J J .Catalytic oxidation of organic compounds in aqueous media[J].Catalysis Today,1996,29:317-322. |
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