考察了超高温焙烧的Ni/Al2O3对甲烷部分氧化反应的催化性能,发现该催化剂经还原后对甲烷部分氧化反应表现出较高的催化活性. X射线衍射结果显示, Ni/Al2O3催化剂在超高温(1?200～1?400 ℃)下焙烧后生成了NiAl2O4, 且无相转移,进一步经950 ℃还原后催化剂中绝大部分Ni以单质Ni0形式存在. 透射电子显微镜测试结果表明,不同超高温焙烧的催化剂经950 ℃还原后Ni晶粒的大小无明显差异. 这说明超高温焙烧的Ni/Al2O3对甲烷部分氧化从Φ母呋钚钥晒榻嵛狽iAl2O4的可还原性以及还原后Ni0相似的晶粒尺寸. 同时还发现,焙烧温度越高,生成的NiAl2O4的还原温度越高.
参考文献
| [1] | Kikuchi E;Chen Y .[J].Studies in surface science and catalysis,1998,119:441. |
| [2] | Ruckenstein E;Wang H Y .[J].Journal of Catalysis,1999,187(01):151. |
| [3] | Wang H.Y.;Ruckenstein E. .Partial Oxidation of Methane to Synthesis Gas over MgO-and SiO_2-Supported Rhodium Catalysts[J].Journal of Catalysis,1999(1):181-187. |
| [4] | Ruckenstein E.;Wang HY. .Partial oxidation of methane to synthesis gas over MgO-supported Rh catalysts: the effect of precursor of MgO[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2000(1/2):33-41. |
| [5] | Ruckenstein E.;Wang H.Y. .Temperature-Programmed Reduction and XRD Studies of the Interactions in Supported Rhodium Catalysts and Their Effect on Partial Oxidation of Methane to Synthesis Gas[J].Journal of Catalysis,2000(1):32-38. |
| [6] | 马迪 .[D].成都:四川大学,2006. |
| [7] | Dissanayake D;Rosynek M P;Kharas K C C .[J].Journal of Catalysis,1991,132(01):117. |
| [8] | Choudhary V R;Rajput A M;Prabhakar B .[J].Journal of Catalysis,1993,139(01):326. |
| [9] | Chu Y L;Li Sh B;Lin J Zh;Gu J F Yang Y L .[J].Applied Catalysis A:General,1996,134(01):67. |
| [10] | De Groote A M;Froment G F .[J].Catalysis Today,1997,37(03):309. |
| [11] | Lu Y.;Shen SK.;Liu Y. .Design of stable Ni catalysts for partial oxidation of methane to synthesis gas[J].Journal of Catalysis,1998(2):386-388. |
| [12] | 沈师孔;李春义;余长春 .[J].催化学报,1998,19(04):300. |
| [13] | Takeguchi T;Furukawa S-n;Inoue M .[J].Journal of Catalysis,2001,202(01):14. |
| [14] | Takehira K;Shishido T;Kondo M .[J].Journal of Catalysis,2002,207(02):307. |
| [15] | Xu Sh;Zhao R;Wang X L .[J].Fuel Processing Technology,2004,86(02):123. |
| [16] | 鲁辉,佟建华,楚文玲,杨维慎,林励吾.加压条件下BaNi0.3Al11.7O19-δ催化剂上甲烷部分氧化制合成气[J].催化学报,2005(08):683-687. |
| [17] | Requies J;Cabrero M A;Barrio V L;Cambra J F Guemez M B Arias P L La Parola V Pena M A Fierro J L G .[J].Catalysis Today,2006,116(03):304. |
| [18] | Guo C L;Zhan X L;Zhang J L;Wang Y P .[J].Journal of Molecular Catalysis A:Chemical,2007,269(1-2):254. |
| [19] | Choudhary VR.;Mamman AS.;Uphade BS. .OXIDATIVE CONVERSION OF METHANE TO SYNGAS OVER NICKEL SUPPORTED ON COMMERCIAL LOW SURFACE AREA POROUS CATALYST CARRIERS PRECOATED WITH ALKALINE AND RARE EARTH OXIDES[J].Journal of Catalysis,1997(2):281-293. |
| [20] | Loong C-K;Richardson J W Jr;Ozawa M .[J].Journal of Alloys and Compounds,1997,250(1-2):356. |
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