OZONE DECOMPOSITION AND CO OXIDATION ON CEO2

被引：103

作者：

NAYDENOV, A

STOYANOVA, R

MEHANDJIEV, D

机构：

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1995年 / 98卷 / 01期

关键词：

CARBON MONOXIDE; CERIUM DIOXIDE; DECOMPOSITION; OZONE;

D O I：

10.1016/1381-1169(94)00060-3

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 reactions of ozone decomposition and CO oxidation by ozone on CeO2 have been investigated. Kinetic experiments were carried out in a gradientless reactor. Ozone decomposition and CO oxidation were found to proceed in the temperature range 10-70 degrees C. Using EPR, TPD and XPS spectroscopy, two different kinds of oxygen species are observed on the oxide surface, one of them being identified as O-3(-). It has been established that both oxygen species do not participate in CO oxidation. The oxidant in the low-temperature oxidation of CO is highly reactive atomic oxygen (probably O-), which is produced by ozone decomposition on the oxide surface.

引用

页码：9 / 14

页数：6

共 26 条

[1]

Harrison, Diwell, Hallett, Platinum Met. Rev., 32, (1988)

[2]

Shido, Iwasawa, J. Catal., 136, pp. 493-503, (1992)

[3]

Nuhan, Cohn, Donner, Catal. Today, 114, pp. 277-291, (1992)

[4]

Binet, Jadi, Lavalley, J. Chim. Phys. Phys.-Chim. Biol., 89, pp. 1779-1797, (1992)

[5]

Schwartz, Schmidt, J. Catal., 138, pp. 283-293, (1992)

[6]

Zafiris, Gorte, Surf. Sci., 276, pp. 86-94, (1992)

[7]

Mendelovici, Tzehoval, Steinberg, The adsorption of oxygen and nitrous oxide on platinum ceria catalyst, Applications of Surface Science, 17, (1983)

[8]

Soria, Martinez-Arias, Conesa, Munuera, Gonzales-Elipe, Effect of chlorine impurities on the properties of CeO2, Surface Science, 251-252, pp. 990-994, (1991)

[9]

Krzyzanowski, J. Chem. Soc., Faraday Trans. I, 72, (1976)

[10]

Imamura, Ikebata, Ito, Ogita, Ind. Eng. Chem. Res., 30, pp. 217-221, (1991)

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