载体ZrO2以四方相(t相)结构存在是WOx/ZrO2形成超强酸结构和高催化活性的必要条件. 研究表明,机械处理(研磨和压片)可导致WOx/ZrO2的载体发生四方相向单斜相的部分转变,从而降低Pt/WOx/ZrO2的正庚烷异构化活性. 添加Al助剂明显提高了载体四方相结构对机械应力的稳定性,从而维持了其催化活性.
参考文献
| [1] | Hino M;Arata K.[A].Canada:Calgary,1988:1727. |
| [2] | Iglesia E;Barton D G;Soled S L;Miseo S Baumgartner J E Gates W E Fuentes G A Meitzner G D .[J].Studies in Surface Science and Catalysis,1996,101:533. |
| [3] | Kuba S.;Lukinskas P.;Grasselli RK.;Gates BC.;Knozinger H. .Structure and properties of tungstated zirconia catalysts for alkane conversion[J].Journal of Catalysis,2003(1/2):353-361. |
| [4] | Li XB;Nagaoka K;Olindo R;Lercher JA .Synthesis of highly active sulfated zirconia by sulfation with SO3[J].Journal of Catalysis,2006(1):39-45. |
| [5] | Klose B S;Jentoft R E;Hahn A;Ressler T Krohnert J Wrabetz S Yang X B Jentoft F C .[J].Journal of Catalysis,2003,217(02):487. |
| [6] | 徐平,徐云鹏,滕飞,胡胜,谭明伟,徐竹生,田志坚.固体强酸催化剂Pd/WO3-ZrO2的制备及其对正庚烷异构化反应的催化性能[J].催化学报,2005(09):750-754. |
| [7] | Huang Y Y;Zhao B Y;Xie Y C .[J].Applied Catalysis A:General,1998,172(02):327. |
| [8] | Lebarbier V;Clet G;Houalla M .[J].Journal of Physical Chemistry B,2006,110(28):13905. |
| [9] | Garvie R C .[J].Journal of Physical Chemistry,1965,69(04):1238. |
| [10] | Gao Z;Xia Y D;Hua W M;Miao C X .[J].Topics in Catalysis,1998,6(1-4):101. |
| [11] | Moreno J A;Poncelet G .[J].Journal of Catalysis,2001,203(02):453. |
| [12] | 陈晓蓉,陈长林,徐南平,牟中原.Al2O3/WO3/ZrO2固体强酸催化剂对正丁烷异构化的催化性能[J].催化学报,2003(12):924-928. |
| [13] | Chen X R;Chen C L;Xu N P;Han S Mou C Y .[J].Catalysis Letters,2003,85(3-4):177. |
| [14] | 杜宇乔,陈晓蓉,陈长林,徐南平.Pt/Al2O3/WO3/ZrO2催化剂对正己烷异构化反应的催化性能[J].催化学报,2006(05):397-402. |
| [15] | Toraya H;Yoshimura M;Somiya S .[J].Journal of the American Ceramic Society,1984,67(06):C119. |
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%