制备了一系列Mo/La-Co-O催化剂,考察了催化剂对甲烷选择氧化制甲醇反应的催化性能,并用BET,XRD,LRS,H2-TPR和XPS等技术研究了催化剂的结构和性质. 结果表明,在n(CH4)∶n(O2)∶n(N2)=10∶1∶1,SV=14.4 L/(g*h),p=4.2 MPa和θ=420 ℃的反应条件下,7%Mo/La-Co-O催化剂表现出较好的催化性能,甲醇选择性为60%,甲醇收率为6.7%. Mo负载于La-Co-O上以后,Mo-O物种以无定形的状态存在于La-Co-O表面,并与La-Co-O发生相互作用. Mo的负载量影响Mo-O物种的结构及催化剂的性质. 催化剂的还原性和表面O-/O2-比影响催化剂上甲烷选择氧化制甲醇反应的性能.
参考文献
[1] | Foster N R .[J].Applied Catalysis,1985,19(01):1. |
[2] | Hall T J;Hargreaves J S J;Hutchings G J;Joyner R W,Taylor S H .[J].Fuel Processing Technology,1995(42):151. |
[3] | Foulds G A;Gray B F .[J].Fuel Processing Technology,1995(42):129. |
[4] | Tabata K;Teng Y;Takemoto T;Suzuki E,Banares M A,Pena M A,Fierro J L G .[J].Catalysis Review-Science and Engineering,2002,44(01):1. |
[5] | 韩占生;潘卫;潘违雄;赵炀,李晋鲁,朱起明,田金忠,黄宁表 .[J].催化学报,1998,19(05):406. |
[6] | 吴越.催化化学[M].北京:科学出版社,1998 |
[7] | Arai H;Yamada T;Eguchi K;Seiyama T .[J].Applied Catalysis,1986(26):265. |
[8] | Slagtern A;Olsbye U .[J].Applied Catalysis A:General,1994,110(01):99. |
[9] | 李然家,余长春,代小平,沈师孔.钙钛矿型La0.8Sr0.2FeO3中的晶格氧用于甲烷选择氧化制取合成气[J].催化学报,2002(06):549-554. |
[10] | Hayakawa T;Andersen A G;Orita H;Shimizu M,Takehira K .[J].Catalysis Letters,1992,16(04):373. |
[11] | Sinquin G;Petit C;Hindermann J P;Kiennemann A .[J].Catalysis Today,2001,70(1-3):183. |
[12] | Li J;Coville N J .[J].Applied Catalysis A:General,1999,181:201. |
[13] | Daturi M;Busca G;Willey R J .[J].Chemistry of Materials,1995,7(11):2115. |
[14] | Medema J;van Stam C;De Beer V H J;Konings A J A,Koningsberger D C .[J].Journal of Catalysis,1978,53(03):386. |
[15] | Dixit L;Gerrard D L;Bowley H J .[J].Applied Spectroscopy Review,1986(22):189. |
[16] | Dufresne P;Payen E;Grimblot J;Bonnelle J P .[J].Journal of Physical Chemistry,1981,85(16):2344. |
[17] | Kim D S;Segawa K;Soeya T;Wachs I E .[J].Journal of Catalysis,1992,136(02):539. |
[18] | Knozinger H;Jeziorowski H .[J].Journal of Physical Chemistry,1978,82(18):2002. |
[19] | Lago R.;Pena MA.;Fierro JLG.;Bini G. .PARTIAL OXIDATION OF METHANE TO SYNTHESIS GAS USING LNCOO(3) PEROVSKITES AS CATALYST PRECURSORS[J].Journal of Catalysis,1997(1):198-209. |
[20] | Crespin M;Hall W K .[J].Journal of Catalysis,1981,69(02):359. |
[21] | Qiu X;Tsubaki N;Fujimoto K .[J].Japanese Journal of Chem Eng,2001,34(11):1366. |
[22] | Arena F;Parmaliana A .[J].Journal of Physical Chemistry,1996(100):19994. |
[23] | Moulder J F;Stickle W F;Sobol P E.[A].Eden Prairier:Perkin-Elmer Corporation,1992 |
[24] | ZHU Y F;Tan R Q;Feng J;Ji Sh Sh,Cao L L .[J].Applied Catalysis A:General,2001,209:71. |
[25] | Wang W;Zhang H B;Lin G D .[J].Applied Catalysis B:Environmental,2000,24(01):219. |
[26] | Wan H L;Zhou X P;Weng W Zh;Long R Q,Chao Z Zh,Zhang W D,Chen M Sh,Luo J Zh,Zhou Sh Q .[J].Catalysis Today,1999,51(01):161. |
[27] | Tabata K;Matsumoto I;Kohiki S .[J].Journal of Materials Science,1987,22(05):1882. |
[28] | 岩本正和 .[J].化学技术志(日本),1980(20):79. |
[29] | Kaliaguine S L;Shelimov B N;Kazansky V B .[J].Journal of Catalysis,1978,55:384. |
[30] | Anderson J R;Tsai P.[J].Journal of the Chemical Society,Chemical Communications,1987(19):1435. |
[31] | Otsuka K;Yamanaka I;WANG Y .[J].Studies in surface science and catalysis,1998,119:15. |
[32] | Banares M A;Rodrigue-Ramos I;Gueereo-Ruize A.[A].Budapest,1992:1131. |
[33] | Kasztelan S;Moffat J B .[J].Journal of Catalysis,1987,106(02):512. |
[34] | Moffat J B;Kasztelan S .[J].Journal of Catalysis,1988,109(01):206. |
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