Catalytic oxidation of naphthalene over CeO2-ZrO2 mixed oxide catalysts

被引：38

作者：

Bampenrat, Asawin ^{[2
]}

Meeyoo, Vissanu ^{[1
]}

Kitiyanan, Boonyarach ^{[2
]}

Rangsunvigit, Pramoch ^{[2
]}

Rirksomboon, Thirasak ^{[2
]}

机构：

[1] Mahanakorn Univ Technol, Ctr Adv Mat & Environm Res, Bangkok 10530, Thailand

[2] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 14期

关键词：

naphthalene oxidation; kinetics; CeO2; ZrO2;

D O I：

10.1016/j.catcom.2008.05.029

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：

In this study, the vapor phase catalytic oxidation of naphthalene was studied over CeO2-ZrO2 mixed oxide catalysts prepared via urea hydrolysis. The Ce0.75Zr0.25O2 solid solution catalyst exhibits the highest activity for the naphthalene oxidation, and the extent of the activity is related to its degree of reducibility. Moreover, the Ce0.75Zr0.25O2 catalyst shows a high selectivity towards CO2 with no formation of by-products. Kinetic studies show that the reaction rates strongly depend on both naphthalene and oxygen concentrations. From the power law model, the reaction orders of naphthalene and oxygen were estimated to equally be ca. 0.5. The Mars-van Krevelen mechanism is in good agreement with the experimental results. The estimated activation energy of the reaction is ca. 90 kJ/mol. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2349 / 2352

页数：4

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