制备了介孔分子筛MSU-1,γ-A12O3,AC(活性炭)和MgO负载的CrOx催化剂,并考察了其催化CO2氧化异丁烷脱氢制异丁烯反应性能.结果表明,各催化剂活性的顺序为:CrOx/MSU-1 ＞CrOx/A12O3＞ CrOx/AC＞ CrOJMgO.其中在CrOx/MSU-1催化剂上,异丁烷的转化率和异丁烯的收率分别为59.2％和39.5％.同时,利用N2吸附-脱附、X射线衍射、X射线光电子能谱和程序升温脱附对催化剂进行了表征.结果表明,载体的比表面积对相应催化剂的初始活性有一定的影响；当CrOx负载量较低时,以单层分散于载体上,且含有较多孤立状态Cr6+时催化剂的活性更高.另外,催化剂表面的弱酸性也会影响其活性；而碱性位的存在可提高催化剂稳定性.
参考文献
| [1] | Heracleous, E.;Lemonidou, A.A. .Ni-Me-O mixed metal oxides for the effective oxidative dehydrogenation of ethane to ethylene - Effect of promoting metal Me[J].Journal of Catalysis,2010(1):67-75. |
| [2] | 李建辉,李仁贵,汪彩彩,黄传敬,翁维正,万惠霖.介孔Ni基催化剂上乙烷氧化脱氢制乙烯[J].催化学报,2009(08):714-716. |
| [3] | Lobera M P;Tellez C;Herguido J;Menendez M .[J].Industrial and Engineering Chemistry Research,2008,47:9314. |
| [4] | Kondratenko EV;Ovsitser O;Radnik J;Schneider M;Kraehnert R;Dingerdissen U .Influence of reaction conditions on catalyst composition and selective/non-selective reaction pathways of the ODP reaction over V2O3, VO2 and V2O5 with O-2 and N2O[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2007(0):98-110. |
| [5] | 王茂功,钟顺和.CO2氧化异丁烷制异丁烯用Pd/V2O5-SiO2催化剂[J].催化学报,2007(02):124-130. |
| [6] | 丁彦;潘霞;薛锦珍;杨得信 李树本 .[J].分子催化,1999,13:373. |
| [7] | Ogonowski J;Skrzynska E .[J].Catalyst Communication,2009,11:132. |
| [8] | 陈桂芳,李静,杨向光.V2O5/Al2O3上异丁烷脱氢反应研究[J].工业催化,2007(09):30-32. |
| [9] | 柳海涛,李会泉,杨玮娇,王兴瑞,张懿.Cr/MSU-1催化剂中Cr含量对CO2氧化丙烷脱氢反应催化性能的影响[J].化学学报,2009(15):1749-1753. |
| [10] | Kocon, M;Michorczyk, P;Ogonowski, J .Effect of supports on catalytic activity of chromium oxide-based catalysts in the dehydrogenation of propane with CO2[J].Catalysis Letters,2005(1/2):53-57. |
| [11] | Michorczyk P;Ogonowski J .[J].Reaction Kinetics and Catalysis Letters,2003,78:41. |
| [12] | Ogonowski J;Skrzynska E .[J].Catalysis Letters,2006,111:79. |
| [13] | Liu L C;Li H Q;Zhang Y .[J].Catalysis Today,2006,115:235. |
| [14] | Liu L C;Li H Q;Zhang Y .[J].Catalyst Communication,2007,8:565. |
| [15] | Ogonowski J;Skrzynska E .[J].Reaction Kinetics and Catalysis Letters,2006,88:293. |
| [16] | Ogonowski J;Skrzynska E .[J].Reaction Kinetics and Catalysis Letters,2007,92:267. |
| [17] | Shimada H;Akazawa T;Ikenaga N;Suzuki T .[J].Applied Catalysis A:General,1998,168:243. |
| [18] | Sugino MO.;Turuda T.;Miura H.;Ikenaga N.;Suzuki T.;Shimada H. .OXIDATIVE DEHYDROGENATION OF ETHYLBENZENE WITH CARBON DIOXIDE[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,1995(1):125-137. |
| [19] | Grabowski R;Grzybowska B;Sloczynski J;Wcislo K .[J].Applied Catalysis A:General,1996,144:335. |
| [20] | Shi X J;Ji S F;Wang K;Li C Y .[J].Energy & Fuels,2008,22:3631. |
| [21] | Derossi S;Ferraris G;Fremiotti S;Garrone E Ghiotti G Campa M C Indovina V .[J].Journal of Catalysis,1994,148:36. |
| [22] | 何松波,赖玉龙,毕文君,杨旭,荣欣,孙承林.K助剂对Pt-Sn-K/γ-Al_2O_3催化剂上C_（16）正构烷烃脱氢反应的影响[J].催化学报,2010(04):435-440. |
| [23] | 黄彦;王国甲;于剑锋;杨洪茂 吴通好 姜玉子 .[J].分子催化,1997,11:221. |
| [24] | 李荣生;甄开吉;王国甲.催化作用基础[M].北京:科学出版社,1990:174. |
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%