采用一种简便的水热法合成了一系列ZrO2,并采用沉积-沉淀法制得相应1.0％ Au/ZrO2催化剂,在模拟甲醇重整气气氛下评价了它们的低温水煤气变换(WGS)反应催化性能.结果发现,于150℃水热合成的ZrO2负载的Au催化剂活性最佳,240℃反应时CO转化率达87％,明显高于相同反应条件下Au负载量较高的Au/Fe2O3,Au/CeO2及Au/CeZrO4催化剂.采用X射线衍射、原子吸收光谱、N2物理吸脱附及扫描电子显微镜等手段对样品进行了表征.结果表明,Au/ZrO2催化剂的总孔体积及平均孔径越大、圆形片状形貌越规整,其低温WGS催化活性就越高.
参考文献
| [1] | Song Ch Sh .[J].Catalysis Today,2002,77:17. |
| [2] | Bond G C;Louis C;Thompson D T.Catalysis by Gold[M].London:Imperial College Press,2006:272. |
| [3] | Ghenciu A F .[J].Current Opinion in Solid State and Materials Science,2002,6:389. |
| [4] | Ratnasamy C;Wagner J P .[J].Catalysis Review:Science and Engineering,2009,51:325. |
| [5] | Tabakova T;Idakiev V;Andreeva D;Mitov I .[J].Applied Catalysis A:General,2000,202:91. |
| [6] | Hua J M;Wei K M;Zheng Q;Lin X Y .[J].Applied Catalysis A:General,2004,259:121. |
| [7] | Zhang F L;Zheng Q;Wei K M;Lin X Y Zhang H H Li J W Cao Y N .[J].Catalysis Letters,2006,108:131. |
| [8] | Fu Q;Kudriavtseva S;Saltsburg H;Flytzani-Stephanopoulos M .[J].Chemical Engineering Journal,2003,93:41. |
| [9] | Zhang, Q;Zhan, YY;Lin, XY;Zheng, Q .The effect of La on Au-ceria catalyst for water gas shift reaction[J].Catalysis Letters,2007(3/4):143-147. |
| [10] | E1-Moemen A A;Karpeako A;Denkwitz Y;Behm R J .[J].Journal of Power Sources,2009,190:64. |
| [11] | 杨申永,詹瑛瑛,陈崇启,曹彦宁,林性贻,郑起.稀土氧化物对水煤气变换催化剂Au/CeO2性能的影响[J].催化学报,2009(07):666-672. |
| [12] | Ma Zh;Yin H F;Dai Sh .[J].Catalysis Letters,2010,136:83. |
| [13] | Tabakova T;Idakiev V;Tenchev K;Boccuzzi F;Manzoli M;Chiorino A .Pure hydrogen production on a new gold-thoria catalyst for fuel cell applications[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(1/2):94-103. |
| [14] | 余育生;孙伟华;詹瑛瑛;林性贻 郑起 .[J].催化学报,2011,32:1220. |
| [15] | Fonseca A A;Fisher J M;Ozkaya D;Shannon M D Thompsett D .[J].Topics in Catalysis,2007,44:223. |
| [16] | 廖卫平,董园园,金明善,何涛,索掌怀.Au/Ce1-xZrxO2催化剂的制备、表征及其在CO氧化和水煤气变换反应中的催化性能[J].催化学报,2008(02):134-140. |
| [17] | 何振亮 .[D].福州:福州大学,2007. |
| [18] | Li J;Chen JL;Song W;Liu JL;Shen WJ .Influence of zirconia crystal phase on the catalytic performance of Au/ZrO2 catalysts for low-temperature water gas shift reaction[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2008(1/2):321-329. |
| [19] | Li J;Ta N;Song W;Zhan E Sh Shen W J .[J].Gold Bulletin,2009,42:48. |
| [20] | Menegazzo F;Pinna F;Signoretto M;Trevisan V Boccuzzi F Chiorino A Manzoli M .[J].ChemSusChem,2008,1:320. |
| [21] | Zane F;Trevisan V;Pinna F;Signoretto M Menegazzo F .[J].Applied Catalysis B:Environmental,2009,89:303. |
| [22] | Manzoli M;Boccuzzi F;Trevisan V;Menegazzo F Signoretto M Pinna F .[J].Applied Catalysis B:Environmental,2010,96:28. |
| [23] | Idakiev V;Tabakova T;Naydenov A;Yuan ZY;Su BL .Gold catalysts supported on mesoporous zirconia for low-temperature water-gas shift reaction[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(3/4):178-186. |
| [24] | Zhang X;Wang H;Xu B Q .[J].Journal of Physical Chemistry B,2005,109:9678. |
| [25] | 施尔畏;陈之战;元如林;郑燕青.水热结晶学[M].北京:科学出版社,2004:86. |
| [26] | Si R;Flytzani-Stephanopoulos M .[J].Angewandte Chemie International Edition,2008,47:2884. |
| [27] | Xie X W;Li Y;Liu Zh Q;Haruta M Shen W J .[J].Nature,2009,458:746. |
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%