Rh-Ni/CeO2-Al2O3 catalysts for methane dry reforming

被引：119

作者：

Ocsachoque, Marco ^{[1
]}

Pompeo, Francisco ^{[1
]}

Gonzalez, Gloria ^{[1
]}

机构：

[1] Univ Nacl La Plata, Ctr Invest & Desarrollo Proc Catalit, RA-47257 La Plata, Buenos Aires, Argentina

来源：

CATALYSIS TODAY | 2011年 / 172卷 / 01期

关键词：

Rh-Ni catalysts; Methane dry reforming; CeO2-alpha-Al2O3; support; Carbon deposition; Synthesis gas; CARBON-DIOXIDE; PARTIAL OXIDATION; NICKEL-CATALYSTS; RH; STEAM; DEPOSITION; CONVERSION; KINETICS; SULFUR; METAL;

D O I：

10.1016/j.cattod.2011.02.057

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of Ni and Rh-Ni catalysts supported on Al2O3 modified by CeO2 (3 and 5 wt%, Ce) was studied for CO2 reforming of methane. Catalysts were characterized by hydrogen chemisorption, TPR, XRD, XPS, BET, TEM and dry reforming reaction tests. The influence of calcination temperature and Ce loading on activity and stability of mono and bimetallic samples was studied. The effect of Rh and Ce addition to Ni/a-Al2O3 catalyst improves the activity. Results show that the catalyst content 3% w/w Ce calcined at 650 degrees C, present higher reforming activity and stability than the unpromoted catalyst. The higher catalytic activity is attributed to the interaction between Rh and Ce phases, which has been verified by TPR experiments that improve the Rh dispersion and increase the catalyst active surface. The Rh addition on Ce-Al2O3 support increases the resistance to deactivation by carbon deposition. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：226 / 231

页数：6

共 30 条

[1] The role of carbon deposition on precious metal catalyst activity during dry reforming of biogas [J].

Barrai, Federico ;

Jackson, Tracy ;

Whitmore, Noah ;

Castaldi, Marco J. .

CATALYSIS TODAY, 2007, 129 (3-4) :391-396

[2] CARBON-DIOXIDE REFORMING OF METHANE OVER LANTHANUM-MODIFIED CATALYSTS IN A FLUIDIZED-BED REACTOR [J].

BLOM, R ;

DAHL, IM ;

SLAGTERN, A ;

SORTLAND, B ;

SPJELKAVIK, A ;

TANGSTAD, E .

CATALYSIS TODAY, 1994, 21 (2-3) :535-543

[3] CO2 reforming of CH4 [J].

Bradford, MCJ ;

Vannice, MA .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1999, 41 (01) :1-42

[4] CO2 reforming of CH4 over supported Pt catalysts [J].

Bradford, MCJ ;

Vannice, MA .

JOURNAL OF CATALYSIS, 1998, 173 (01) :157-171

[5] KINETICS OF CARBON FORMATION FROM CH4-H2 MIXTURES ON NICKEL ALUMINA CATALYST [J].

DEMICHELI, MC ;

PONZI, EN ;

FERRETTI, OA ;

YERAMIAN, AA .

CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL, 1991, 46 (03) :129-136

[6] DEACTIVATION OF STEAM-REFORMING MODEL CATALYSTS BY COKE FORMATION .1. KINETICS OF THE FORMATION OF FILAMENTOUS CARBON IN THE HYDROGENOLYSIS OF CYCLOPENTANE ON NI/AL2O3 CATALYSTS [J].

DUPREZ, D ;

DEMICHELI, MC ;

MARECOT, P ;

BARBIER, J ;

FERRETTI, OA ;

PONZI, EN .

JOURNAL OF CATALYSIS, 1990, 124 (02) :324-335

[7] Effect of H2S on the reaction of methane with carbon dioxide over supported Rh catalysts [J].

Erdohelyi, A ;

Fodor, K ;

Szailer, T .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 53 (03) :153-160

[8] Effect of Ce-doping on Rh/ZrO2 catalysts for partial oxidation of methane [J].

Eriksson, S. ;

Rojas, S. ;

Boutonnet, M. ;

Fierro, J. L. G. .

APPLIED CATALYSIS A-GENERAL, 2007, 326 (01) :8-16

[9] Spectroscopic studies of interfacial structures of CeO2-TiO2 mixed oxides [J].

Fang, Jun ;

Bi, Xinzhen ;

Si, Dejun ;

Jiang, Zhiquan ;

Huang, Weixin .

APPLIED SURFACE SCIENCE, 2007, 253 (22) :8952-8961

[10] Studies on H2S adsorption and carbon deposition over Mo-Ni/Al2O3 catalysts [J].

González, MG ;

Ponzi, EN ;

Ferretti, OA ;

Quincoces, CE ;

Marecot, P ;

Barbier, J .

ADSORPTION SCIENCE & TECHNOLOGY, 2000, 18 (06) :541-550

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