Methane Decomposition on La2O3-Promoted Raney-Type Fe Catalysts

被引：28

作者：

Cunha, A. F. ^{[1
]}

Mahata, N. ^{[1
]}

Orfao, J. J. M. ^{[1
]}

Figueiredo, J. L. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, Dept Engn Quim, Lab Catalise & Mat,Lab Associado LSRE LCM, P-4200465 Oporto, Portugal

来源：

ENERGY & FUELS | 2009年 / 23卷 / 08期

关键词：

FILAMENTOUS CARBON; NICKEL NANOPARTICLES; HYDROGEN; HYDROCARBON; NANOFIBERS; MECHANISM; OXIDES; IRON; XPS;

D O I：

10.1021/ef900385e

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The catalytic decomposition of methane into hydrogen and carbon was studied on La2O3-promoted Raney-type Fe catalysts. Promoted catalysts were synthesized by in situ thermal treatment of physical mixtures of Raney Fe and La2O3. The catalysts were characterized by particle size measurement, Brunauer-Emmett-Teller method (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). La2O3 acts as a textural promoter. XPS reveals charge transfer from La2O3 to Fe. Promoted Raney Fe catalyst with an optimum loading of La2O3 exhibited good performance in methane decomposition.

引用

页码：4047 / 4050

页数：4

共 26 条

[1] Chemical state quantification of iron and chromium oxides using XPS: the effect of the background subtraction method [J].

Aronniemi, M ;

Sainio, J ;

Lahtinen, J .

SURFACE SCIENCE, 2005, 578 (1-3) :108-123

[2] Cobalt catalysts of methane decomposition: accumulation of the filamentous carbon [J].

Avdeeva, LB ;

Kochubey, DI ;

Shaikhutdinov, SK .

APPLIED CATALYSIS A-GENERAL, 1999, 177 (01) :43-51

[3] SURFACE-ANALYSIS OF RANEY CATALYSTS [J].

BIRKENSTOCK, U ;

HOLM, R ;

REINFANDT, B ;

STORP, S .

JOURNAL OF CATALYSIS, 1985, 93 (01) :55-67

[4]

BIRKENSTOCK U, 1992, Patent No. 5090997

[5] Synthesis of carbon nanofibers:: effects of Ni crystal size during methane decomposition [J].

Chen, D ;

Christensen, KO ;

Ochoa-Fernández, E ;

Yu, ZX ;

Totdal, B ;

Latorre, N ;

Monzón, A ;

Holmen, A .

JOURNAL OF CATALYSIS, 2005, 229 (01) :82-96

[6] Catalytic decomposition of methane on Raney-type catalysts [J].

Cunha, A. F. ;

Orfao, J. J. M. ;

Figueiredo, J. L. .

APPLIED CATALYSIS A-GENERAL, 2008, 348 (01) :103-112

[7] Decomposition of methane over iron catalysts at the range of moderate temperatures: The influence of structure of the catalytic systems and the reaction conditions on the yield of carbon and morphology of carbon filaments [J].

Ermakova, MA ;

Ermakov, DY ;

Chuvilin, AL ;

Kuvshinov, GG .

JOURNAL OF CATALYSIS, 2001, 201 (02) :183-197

[8] Catalytic conversion of methane and CO2 to synthesis gas over a La2O3-modified SiO2 supported Ni catalyst in fluidized-bed reactor [J].

Gao, Jing ;

Hou, Zhaoyin ;

Guo, Jianzhong ;

Zhu, Yinghong ;

Zheng, Xiaoming .

CATALYSIS TODAY, 2008, 131 (1-4) :278-284

[9]

Haussinger P., 2009, ULLMANNS ENCY IND CH, DOI DOI 10.1002/14356007.A13_297

[10]

Jiang P., 2003, J. Natur. Gas Chem, V12, P183

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