以机械混合法、浸渍法和共沉淀法分别制备了4%Ni-Al2O3催化剂,并用X射线衍射、程序升温还原、紫外-可见漫反射光谱和N2吸附等方法对催化剂的体相和表面结构进行了表征,系统考察了制备方法及焙烧温度对Ni-Al2O3催化剂催化丙烷选择性还原NO性能的影响. 结果表明, Ni-Al2O3中存在NiO和NiAl2O4两种镍相,前者是丙烷氧化活性中心,后者是NO选择性催化还原的活性中心. 共沉淀法制备的催化剂活性最好, 550 ℃焙烧的Ni-Al2O3催化剂在反应温度为450和500 ℃时NO转化率接近100%.
参考文献
| [1] | Yan JY.;Sachtler WMH.;Kung HH.;Kung MC. .CO/AL2O3 LEAN NOX REDUCTION CATALYST[J].Journal of Catalysis,1997(1):178-186. |
| [2] | Kung M C;Park P W;Kim D W;Kung H H .[J].Journal of Catalysis,1999,181(01):1. |
| [3] | Liotta L F;Pantaleo G;Macaluso A;Di Carlo G,Deganello G .[J].Applied Catalysis A:General,2003,245(01):167. |
| [4] | 尉继英,朱月香,谢有畅.制备方法对新型锡锆固溶体催化剂结构及其选择催化一氧化氮还原性能的影响[J].催化学报,2003(02):137-142. |
| [5] | 孟明;林培琰;伏义路 .[J].催化学报,1998,19(01):70. |
| [6] | Shimizu K;Maeshima H;Satsuma A;Hattori T .[J].Applied Catalysis B:Environmental,1998,18(1-2):163. |
| [7] | Efthimiadis E A;Lionta G D;Christoforou S C;Vasalos I A .[J].Catalysis Today,1998,40(01):15. |
| [8] | Bolt PH.;Geus JW.;Habraken FHPM. .ON THE ROLE OF A NIAL2O4 INTERMEDIATE LAYER IN THE SINTERING BEHAVIOR OF NI/ALPHA-AL2O3[J].Journal of Catalysis,1995(2):300-306. |
| [9] | Scheffer B;Heijeinga J J;Moulijn J A .[J].Journal of Physical Chemistry,1987,91(18):4752. |
| [10] | Cimino A;Jacono M Lo;Schiavello M .[J].Journal of Physical Chemistry,1971,75(08):1044. |
| [11] | Okazaki N.;Shiina Y.;Tada A.;Iwamoto M.;Katoh Y. .SELECTIVE SUPPRESSION OF UNDESIRABLE COMPETITIVE OXIDATION DURING SELECTIVE CATALYTIC REDUCTION OF NITROGEN MONOXIDE BY ETHENE IN EXCESS OXYGEN OVER METAL-LOADED ALUMINAS[J].Chemistry Letters,1997(9):889-890. |
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%