Synthesis gas production by partial oxidation of methane on Pt/Al2O3, Pt/Ce-ZrO2 and Pt/Ce-ZrO2/Al2O3 catalsts

被引：0
|
作者：
Silva, PP
Silva, FDA
Lobo, AG
de Souza, HP
Passos, FB
Hori, CE
Mattos, LV
Noronha, FB
机构：
[1] UFU, FEQUI, BR-38400902 Uberlingen, Brazil
[2] INT, BR-20081310 Rio De Janeiro, RJ, Brazil
[3] Univ Fed Fluminense, BR-24210240 Niteroi, RJ, Brazil
来源：
NATURAL GAS CONVERSION VII | 2004年 / 147卷
关键词：
D O I：
暂无
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The partial oxidation of methane was studied on Pt/Al2O3, Pt/Ce-ZrO2 and Pt/Ce-ZrO2/Al2O3 catalysts. The oxygen transfer capacity of the samples and the degree of coverage of the alumina surface were evaluated by oxygen storage capacity (OSC) and infrared spectroscopy of adsorbed CO2, respectively. Pt/Ce0.75Zr0.25O2 catalyst was more active and stable than Pt/Al2O3 and Pt/Ce0.75Zr0.25O2/Al2O3 catalysts on partial oxidation of methane. These results were explained by the high oxygen storage/release capacity Of Pt/Ce0.75Zr0.25O2 catalyst, which allowed a removal of carbonaceous deposits from the active sites. Pt/Ce0.75Zr0.25O2/Al2O3 catalyst also presented a high oxygen exchange capacity. However, this sample deactivated during the reaction. The low degree of coverage of alumina surface obtained for this catalyst avoided the occurrence of the redox mechanism of carbon removal.
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页码：157 / 162
页数：6
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