采用共沉淀法制备了TiO2-ZrO2复合氧化物和单一的TiO2、ZrO2粉体,不同温度下煅烧后得到样品.用N2吸附、X-射线衍射仪、热重-差示扫描量热法对样品进行了表征.考察了单一组分与复合氧化物结构性能的差别以及煅烧温度对复合氧化物性能的影响.结果表明:550 ℃煅烧2 h后,单一TiO2、ZrO2分别是结晶良好的锐钛矿和单斜相(含少量四方相),而TiO2-ZrO2复合氧化物依然是无定型结构且具有较大的比表面积(190.15 m2/g).600 ℃煅烧后TiO2-ZrO2复合氧化物中出现了ZrTiO4晶型.随煅烧温度的升高,复合氧化物的比表面积出现了明显的下降(190.15～19.16 m2/g).DSC-TG曲线给出了TiO2、ZrO2以及TiO2-ZrO2的相转变温度,分别为440.2 ℃、445.7 ℃、713.5 ℃.
参考文献
| [1] | 方明,高基伟,申乾宏,王平,杨辉.锐钛矿晶型TiO2溶胶的精细结构及其光催化活性[J].硅酸盐学报,2006(04):438-441. |
| [2] | Padmanabha Reddy Ettireddy;Neeraja Ettireddy;Sergey Mamedov .Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(1/2):123-134. |
| [3] | 高志华,黄伟,郝利峰,谢克昌.浆态床用CuO/ZrO2催化剂的完全液相法合成及其对CO加氢的催化性能[J].催化学报,2006(01):86-90. |
| [4] | 毛东森,卢冠忠,陈庆龄.钛锆复合氧化物的制备及催化性能的研究[J].工业催化,2005(04):1-6. |
| [5] | M.E.Manriquez;T.Lopez;R.Gomez;J.Navarrete .Preparation of TiO_2-ZrO_2 mixed oxides with controlled acid-basic properties[J].Journal of molecular catalysis, A. Chemical,2004(2):229-237. |
| [6] | Daturi M;Cremona A;Milella F et al.Characterisation of zirconia-titania powders prepared by coprecipitation[J].Journal of the European Ceramic Society,1998,18(08):1079-1087. |
| [7] | H.Zou;Y.S.Lin .Structural and surface chemical properties of sol-gel derived TiO_2-ZrO_2 oxides[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2004(1):35-42. |
| [8] | M.E.Manriquez;T.Lopez;R.Gomez;J.Navarrete .Preparation of TiO_2-ZrO_2 mixed oxides with controlled acid-basic properties[J].Journal of molecular catalysis, A. Chemical,2004(2):229-237. |
| [9] | Daly F P;Ando H;Schmitt J L et al.Hydrodesulfuri-zation over a TiO2-ZrO2-supported CoO-MoO3 catalyst[J].Journal of Catalysis,1987,108(02):401-408. |
| [10] | Mehran Ghiaci;Hamidreza Aghaei;Alireza Abbaspur .Size-controlled synthesis of ZrO_2-TiO_2 nanoparticles prepared via reverse micelle method Investigation of particle size effect on the catalytic performance in vapor phase Beckmann rearrangement[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(5):1255-1262. |
| [11] | Ito K;Kakino S;Ikeue K;Machida M .NO adsorption/desorption property of TiO2-ZrO2 having tolerance to SO2 poisoning[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(1/2):137-143. |
| [12] | Perez-Hernandez R;Mendoza-Anaya D;Fernandez ME;Gomez-Cortes A .Synthesis of mixed ZrO2-TiO2 oxides by sol-gel: Microstructural characterization and infrared spectroscopy studies of NOx[J].Journal of molecular catalysis, A. Chemical,2008(1/2):200-206. |
| [13] | Gregg S J;Sing K S W;高敬琮.吸附、比表面与孔隙率[M].北京:化学工业出版社,1989:124-128. |
| [14] | 赵振国.界面化学基础[M].北京:化学工业出版社,1996:345-346. |
| [15] | 林涛,李伟,龚茂初,喻瑶,杜波,陈耀强.ZrO2-TiO2-CeO2的制备及其在NH3选择性催化还原NO中的应用[J].物理化学学报,2007(12):1851-1856. |
| [16] | 丁光辉,蒋晓原,王月鹃,郑小明.CuO/Ti0.5Zr0.5O2催化剂对NO+CO反应的催化作用[J].无机化学学报,2004(07):805-811. |
| [17] | Das D.;Mishra HK.;Parida KM.;Dalai AK. .Preparation, physico-chemical characterization and catalytic activity of sulphated ZrO2-TiO2 mixed oxides[J].Journal of molecular catalysis, A. Chemical,2002(2):271-282. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%