采用等体积浸渍法制备了Ni/SiC甲烷化催化剂,研究了SiC载体表面氧化程度对催化剂低温活性和高温稳定性的影响,并采用热重-差示扫描量热、N2物理吸附、傅立叶变换红外光谱、氨程序升温脱附、X射线衍射、氢程序升温还原和氢化学吸附技术对样品进行了表征.结果表明,随着载体氧化温度的提高,催化剂的比表面积和镍分散度降低,但还原性和反应稳定性提高.未氧化载体所负载催化剂的高温稳定性最差,其原因在于载体对镍粒子的固定作用最弱.负载于500和700℃处理的SiC载体上的催化剂具有较好的低温活性和高温稳定性,这是因为适度氧化后的载体能较好地分散并固定镍粒子.900℃处理的载体因过度氧化形成了低活性的氧化层,使负载的镍粒子变大,因而催化剂的低温活性最差.
参考文献
[1] | Kopyscinski J;Schildhauer T J;Biollaz S M A .[J].Fuel,2010,89:1763. |
[2] | 刘志光,龚华俊,余黎明.我国煤制天然气发展的探讨[J].煤化工,2009(02):1-5,13. |
[3] | 李大尚.煤制合成天然气竞争力分析[J].煤化工,2007(06):1-3,7. |
[4] | MillsG A;Steffgen F W .[J].Catalysis Review:Science and Engineering,1973,8:159. |
[5] | 张罕,董云芸,方维平,连奕新.复合氧化物载体对镍基催化剂上CO甲烷化反应性能的影响[J].催化学报,2013(02):330-335. |
[6] | 田大勇;杨霞;秦绍东;孙守理 孙琦 .[J].化工进展,2012,31:229. |
[7] | 李霞,杨霞珍,唐浩东,刘化章.载体对合成气制甲烷镍基催化剂性能的影响[J].催化学报,2011(08):1400-1404. |
[8] | 朱瑞春.煤制天然气催化剂研究进展[J].现代化工,2012(08):33-36. |
[9] | [J].程工程学报,2011,11:880. |
[10] | 史俊高,田原宇,刘霞,邢仕杰.一氧化碳甲烷化反应的研究进展[J].现代化工,2012(07):43-46,48. |
[11] | 谭静,王乃继,肖翠微,周建明,李婷,宋春燕.煤制天然气镍基催化剂的研究进展[J].洁净煤技术,2011(02):43-45,53. |
[12] | 何忠;崔晓曦;范辉;常瑜 李忠 .[J].化工进展,2011,30:388. |
[13] | 路霞,陈世恒,王万丽,马紫峰.CO甲烷化Ni基催化剂的研究进展[J].石油化工,2010(03):340-345. |
[14] | Nguyen P;Pham C .[J].Applied Catalysis A:General,2011,391:443. |
[15] | 李星运,王发根,潘秀莲,包信和.Rh/CeO2-SiC催化乙醇部分氧化制氢[J].催化学报,2013(01):257-262. |
[16] | Kim S M;Woo S I .[J].ChemSusChem,2012,5:1513. |
[17] | Wang O;Sun W Z;Jin G O;Wang Y Y Guo X Y .[J].Applied Catalysis B:Environmental,2008,79:307. |
[18] | Leroi P;Madani B;Pham-Huu C;Ledoux M-J Savin-Poncet S Bousquet J L .[J].Catalysis Today,2004,91-92:53. |
[19] | Pesant L;Matta J;Garin F;Ledoux MJ;Bernhardt P;Pham C;Pham-Huu C .A high-performance Pt/P-SiC catalyst for catalytic combustion of model carbon particles (CPs)[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2004(1):21-27. |
[20] | Kizling M B;Stenius P;Andersson S;Frestad A .[J].Applied Catalysis B:Environmental,1992,1:149. |
[21] | Frind R;Borchardt L;Kockrick E;Mammitzsch L Petasch U Herrmann M Kaskel S .[J].CatalSci Technol,2012,2:139. |
[22] | Guo X N;Zhi G J;Yah X Y;Jin G O Guo X Y Brault P .[J].Catalysis Communications,2011,12:870. |
[23] | Nguyen P;Edouard D;Nhut J M;Ledoux M J Pham C Pham-Huu C .[J].Applied Catalysis B:Environmental,2007,76:300. |
[24] | Ledoux M J;Crouzet C;Pham-Huu C;Turines V Kourtakis K Mills P L Lerou J J .[J].Journal of Catalysis,2001,203:495. |
[25] | Methivier C.;Brun M.;Massardier J.;Bertolini JC.;Beguin B. .Pd/SiC catalysts - Characterization and catalytic activity for the methane total oxidation[J].Journal of Catalysis,1998(2):374-382. |
[26] | Xie S;Tong X L;Jin G Q;Qin Y Guo X Y .[J].J Mater Chem A,2013,1:2104. |
[27] | Lü H F;Mu S C;Cheng N C;Pan M .[J].Applied Catalysis B:Environmental,2010,100:190. |
[28] | Vannice M A;Chao Y L;Friedman R M .[J].Applied Catalysis,1986,20:91. |
[29] | Yu Y;Jin G O;Wang Y Y;Guo X Y .[J].Fuel Processing Technology,2011,92:2293. |
[30] | Zhang G Q;Sun T J;Peng J X;Wang S Wang S D .[J].Applied Catalysis A:General,2013,462-463:75. |
[31] | de la Osa A R;De Lucas A;Diaz-Maroto J;Romero A Valverde J L Sanchez P .[J].Catalysis Today,2012,187:173. |
[32] | Lacroix M;Dreibine L;de Tymowski B;Vigneron F Edouard D Bégin D Nguyen P Pham C Savin-Poncet S Luck F Ledoux M J Pham-Huu C .[J].Applied Catalysis A:General,2011,397:62. |
[33] | Liu H T;Yang D X;Gao R X;Chen L Zhang S B Wang X L .[J].Catalysis Communications,2008,9:1302. |
[34] | Pham-Huu C;Bouchy C;Dintzer T;Ehret G Estournes C Ledoux M J .[J].Applied Catalysis A:General,1999,180:385. |
[35] | Xu J;Liu Y M;Xue B;Li Y X Cao Y Fan K N .[J].Physical Chemistry Chemical Physics,2011,13:10111. |
[36] | Harlin M E;Krause A O I;Heinrich B;Pham-Huu C Ledoux M J .[J].Applied Catalysis A:General,1999,185:311. |
[37] | Florea I;Ersen O;Hirlimann C;Roiban L Deneuve A Houlle M Janowska I Nguyen P Pham C Pham-Huu C .[J].Nanoscale,2010,2:2668. |
[38] | Moene R;Makkee M;Moulijn J A .[J].Applied Catalysis A:General,1998,167:321. |
[39] | Guerfi K;Lagerge S;Meziani MJ;Nedellec Y;Chauveteau G .Influence of the oxidation on the surface properties of silicon carbide[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2005(1/2):140-149. |
[40] | García-Vargas J M;Valverde J L;de Lucas-Consuegra A;Gómez-Monedero B Sáánchez P Dorado F .[J].Applied Catalysis A:General,2012,431:49. |
[41] | Pedersen K;Skov A;Rostrup-Nielsen J R .[J].American Chemical Society Division of Fuel Chemistry Preprints,1979,25:89. |
[42] | Haryanto A;Fernando S D;To S D F;Steele P H Pordesimo L Adhikari S .[J].Energy and Fuels,2009,23:3097. |
[43] | Andersson M P;Abild-Pedersen F;Remediakis l N;Bligaard T Jones G Engbaek J Lytken O Horch S Nielsen J H Sehested J Rostrup-Nielsen J R Norskov J K Chorkendorff I .[J].Journal of Catalysis,2008,255:6. |
[44] | Rostrup-Nielsen J R;Pedersen K;Sehested J .[J].Applied Catalysis A:General,2007,330:134. |
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%