研究了Ni-Cu/CeO2催化剂在乙醇水蒸气重整反应中的催化性能.以具有高比表面积的CeO2为载体,用沉积沉淀法制备了一系列不同担载量的Ni, Cu双组分催化剂,采用X射线衍射、程序升温还原和透射电子显微镜对催化剂的晶相组成、还原性能和形貌进行了表征.结果表明, CuO, NiO和CeO2的相互作用明显改善了NiO的分散.适量CuO的加入使NiO分散度增大,颗粒明显变小,从而使催化剂具有更好的催化性能,但过多CuO的加入反而降低了催化剂的活性.Ni和Cu的催化性能差异较大, Ni具有优异的断裂C - C键性能,在低温下即可实现乙醇的完全转化,而在高温区则具有很好的甲烷重整性能,可获得很高的氢气产率;Cu在低温区倾向于使乙醇脱氢生成乙醛以及进一步脱羰基生成丙酮,在高温区也具有一定的乙醇裂解性能.
参考文献
| [1] | Fishtik I;Alexander A;Datta R;Geana D .[J].International Journal of Hydrogen Energy,2000,25(01):31. |
| [2] | Vasudeva K;Mitra N;Umasankar P;Dhingra S C .[J].International Journal of Hydrogen Energy,1996,21(01):13. |
| [3] | Fatsikostas A N;Verykios X E .[J].Journal of Catalysis,2004,225(02):439. |
| [4] | Fatsikostas A N;Kondarides D I;Verykios X E .[J].Catalysis Today,2002,75(1-4):145. |
| [5] | Akande AJ;Idem RO;Dalai AK .Synthesis, characterization and performance evaluation of Ni/Al2O3 catalysts for reforming of crude ethanol for hydrogen production[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2005(2):159-175. |
| [6] | Marino F;Boveri M;Baronetti G;Laborde M .[J].International Journal of Hydrogen Energy,2001,26(07):665. |
| [7] | 杨宇,吴绯,马建新.载体对镍催化剂催化乙醇水蒸气重整制氢反应性能的影响[J].催化学报,2005(02):131-137. |
| [8] | Zhang B C;Tang X L;Li Y;Cai W J Xu Y D Shen W J .[J].Catalysis Communications,2006,7(06):367. |
| [9] | Li YD.;Chang L.;Qin YN.;Chen JL. .The doping effect of copper on the catalytic growth of carbon fibers from methane over a Ni/Al2O3 catalyst prepared from Feitknecht compound precursor[J].Journal of Catalysis,1998(1):76-83. |
| [10] | Li J Z;Lu G X;Li K;Wang W P .[J].Journal of Molecular Catalysis A:Chemical,2004,221(1-2):105. |
| [11] | Vargas J C;Libs S;Roger A C;Kiennemann A .[J].Catalysis Today,2005,107-108:417. |
| [12] | Salge J R;Deluga G A;Schmidt L D .[J].Journal of Catalysis,2005,235(01):69. |
| [13] | Reshetenko TV.;Avdeeva LB.;Ismagilov ZR.;Chuvilin AL.;Ushakov VA. .Carbon capacious Ni-Cu-Al2O3 catalysts for high-temperature methane decomposition[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2003(1):51-63. |
| [14] | Trovarelli A .[J].Catalysis Review-Science and Engineering,1996,38(04):439. |
| [15] | Shan WJ.;Luo MF.;Ying PL.;Shen WJ.;Li C. .Reduction property and catalytic activity of Ce1-XNiXO2 mixed oxide catalysts for CH4 oxidation[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2003(1):1-9. |
| [16] | 杨咏来,徐恒泳,李文钊.Ni/CeO2-Al2O3催化剂上CH4-CO2转化积炭性能的研究[J].高等学校化学学报,2002(11):2112-2116. |
| [17] | 谭晓燕,ZHANG Wen-hua,张文华,童冬梅,胡常伟.金属与CeO2、TiO2相互作用的研究[J].天然气化工,2001(03):1-6. |
| [18] | Tang X L;Zhang B C;Li Y;Xu Y D Xin Q Shen W J .[J].Catalysis Today,2004,93-95:191. |
| [19] | Flytzan-Stephanopoulos M;Meldon J;Qi X M.Water-Gas Shift with Integrated Hydrogen Separation Process:Annual Report September 1,2000-August 31,2001[M].Washington,DC:US Department of Energy (DOE),2001 |
| [20] | Nishiguchi T;Matsumoto T;Kanai H;Utani K;Matsumura Y;Shen WJ;Imamura S .Catalytic steam reforming of ethanol to produce hydrogen and acetone[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2005(1/2):273-277. |
| [21] | Fatsikostas A N;Kondarides D I;Verykios X E.[J].Chemical Communications,2001(09):851. |
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%