Oxidative dehydrogenation of ethane and propane over Ca-Co-P catalysts

被引：1

作者：

Aaddane, A ^{[1
]}

Kacimi, M ^{[1
]}

Ziyad, M ^{[1
]}

机构：

[1] Fac Sci Rabat, Dept Chim, Lab Physicochim Mat & Catalyse, Rabat, Morocco

来源：

JOURNAL DE PHYSIQUE IV | 2005年 / 123卷

关键词：

D O I：

10.1051/jp4:2005123025

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Different compositions of calcium-cobalt phosphate Ca3-xCOx(PO4)(2) (0 <= x <= 3) were synthesized by the precipitation method. The X-ray diffraction patterns showed that in the range 0 <= x <= 0.3 the solid displays a whitlockite-type structure which belongs to rhombohedral symmetry with the space group R3c (Z = 6). U.V.-visible investigations showed that Co2+ ions occupy the M(5) sites of the phosphate. The same technique revealed that all cobalt cations exist under the +II oxidation state. Pure tricalcium phosphate beta-Ca-3(PO4)(2) was found inactive in the ODH reactions of ethane and propane. An increase of Co2+ concentration in the catalysts improved the performances.

引用

页码：151 / 154

页数：4

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