Role of vanadium in Ni:Al2O3 catalysts for carbon dioxide reforming of methane

被引：59

作者：

Valentini, A

Carreño, NLV

Probst, LFD

Lisboa-Filho, PN

Schreiner, WH

Leite, ER

Longo, E

机构：

[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

[2] UFSCar, Dept Quim, CMDMC, LIEC, BR-13565905 Sao Carlos, SP, Brazil

[3] UPPR, Dept Fis, Curitiba, Parana, Brazil

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 255卷 / 02期

关键词：

methane; CO2; reforming; V-promoted Ni/Al2O3; coke deposition;

D O I：

10.1016/s0926-860x(03)00560-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The CO2 reforming of CH4 was performed over V-promoted Ni/Al2O3 catalysts similarly prepared by the polymeric precursor method. The H-2 chemisorption, X-ray diffraction (XRD) and X-ray photoemission spectroscopy (XPS) analyses show that a low V wt.% addition suppresses the NiAl2O4 formation. Moreover, the CHN results point out to a low carbon deposition and the surface area (BET) abruptly increases upon the addition of 0.8 wt.% V. On the other hand, the sample with high V wt.% presented the highest carbon deposition, what was attributed to the CH4 decomposition increase promoted by the V. (C) 2003 Elsevier B.V All rights reserved.

引用

页码：211 / 220

页数：10

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