采用水热法制备了Ce0.6Zr0.3 Y0.1O1.95固溶体.采用XRD、分子荧光光度仪及透射电镜对其进行了表征,结果表明,C0O Zr}0 Y0.O01.95具有立方萤石结构,形成了单相的纳米级复合氧化物固溶体.将其作为固体酸催化剂应用于乙酸、正丁醇的酯化反应,考察了酸醇比、反应时间和催化剂重复使用等因素对乙酸转化率的影响,确定最优反应条件是:酸醇比1∶1,反应时间2.5 h,乙酸转化率为43.20%.作为一种固体酸,它具有较高的酸催化活性.催化剂易与反应液分离.反复使用几次后,其催化活性基本保持不变.
参考文献
| [1] | Trovarelli A .Catalytic properties of cane and CeO2-containing materials[J].Catalysis Review:Science and Engineering,1996,38:439. |
| [2] | Yuan, Q.;Duan, H.-H.;Li, L.-L.;Sun, L.-D.;Zhang, Y.-W.;Yan, C.-H. .Controlled synthesis and assembly of ceria-based nanomaterials[J].Journal of Colloid and Interface Science,2009(2):151-167. |
| [3] | 胡玉才,冯长根,王丽琼,王大祥,张兴燕,李云.新一代三效催化剂的关键材料-CexZr1-xO2固溶体研究进展[J].环境科学与技术,2002(04):42-44,47. |
| [4] | 傅毛生,李永绣,邓苏君,胡建东.纳米CeO2及其复合氧化物的制备方法研究进展[J].材料导报,2008(08):44-47,56. |
| [5] | 胡玉才.铈锆氧化物固溶体的制备、表征及三效催化性能[J].材料科学与工艺,2005(01):34-37. |
| [6] | 冯长根,胡玉才,王丽琼.铈锆氧化物固溶体对全钯三效催化剂性能的影响[J].应用化学,2003(02):159-162. |
| [7] | 胡玉才.微波辐射铈锆固溶体催化合成乙酸丁酯的研究[J].应用化工,2005(08):482-483,489. |
| [8] | 胡玉才.铈锆镨氧化物固溶体在三效催化剂中的应用[J].稀有金属材料与工程,2005(08):1299-1301. |
| [9] | Hu Yucai,Yin Ping,Liang Tao,Jiang Wei,Liu Bing.Rare Earth Doping Effects on Properties of Ceria-Zirconia Solid Solution[J].稀土学报（英文版）,2006(z2):86-89. |
| [10] | Ncelia Guillébn-Hurtado;ldriss Atribak;Agusitn Bueno-σSpez;Avelina Carcia-Garcia .Influence of the cerium precursor on the physico-chemical features and NO to NO2 ouidation activity of ce-ria and ceria-zirconia catalysts[J].Journal of Molecular Cataly-sis A:Chemical,2010,323(1-2):52. |
| [11] | Aleseandro Trovarelli;Franceeca Zemar;Jordi Llorca;Carla de Leitenburg Giuliano Dolcetti Janas T Kiss .Nanophaee fluo-rite-structured CeO2-ZrO2 catalysts prepared by high-energy me-chanical milling[J].Journal of Catalysis,1997,169(02):490. |
| [12] | 杜玉成,张久兴,何洪.高比表面积纳米结构Ce0.7Zr0.3O2固溶体的模板组装[J].中国稀土学报,2003(z2):44-47. |
| [13] | Vadivulcaraei Raju;Stephen Jaeniclce;Ceilc-Khuan Chuah .Effect of hydrothermal treatment and silica on thermal stability and oxy-gen storage capacity of caria-zirconia[J].Applied Catalysis B:Environmental,2009,91(1-2):92. |
| [14] | 郑育英,黄慧民,李军,王俏运.铈锆氧化物固溶体前驱物热分解动力学的研究[J].稀有金属,2008(04):485-488. |
| [15] | Sureeh Kumar K;Tom Mathews .Sol-gel synthesis and micro-wave assisted sintering of zirconia-ceria solid solution[J].Journal of Alloys and Compounds,2005,391(1-2):177. |
| [16] | Weifan Chen;Fengsheng Li;Jiyi Yu;Leili Liu;Hailian Gao .Rapid synthesis of mesoporous ceria-zirconia solid solutions via a novel salt-assisted combustion process[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2006(12):2318-2324. |
| [17] | Specchia Stefania;Finacehio Elisabetta;Busca Guido;Pabnisano Pietro Specchia Vito .Surface chemistry and reactivity of ceria-zirconia-supported palladium oxide eatalysts for natural gas com-bustion[J].Journal of Catalysis,2009,263(01):134. |
| [18] | Masui Toshiyuki;Ozaki Tetsuya;Machida Ken-ichi;Adachi Gin-ya .Preparation of ceria-zirconia sub-catalysts for automotive ex-haust cleaning[J].Journal of Alloys and Compounds,2000,303-304:49. |
| [19] | 詹明军,吴介达,陆世鑫,黄忠良.络合法制备 CexZr1-xO2 固溶体及其表征[J].同济大学学报(自然科学版),2001(11):1331-1334. |
| [20] | 郑育英,黄慧民,李大光,邓淑华.CexZr1-xO2固溶体的制备方法[J].化工新型材料,2006(02):31-33,36. |
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%