Selective oxidation of hydrocarbons on V- and/or Co-containing aluminophosphate (MeAPO-5) using molecular oxygen

被引:83
作者
Concepcion, P
Corma, A
Nieto, JML
PerezPariente, J
机构
[1] UNIV POLITECN VALENCIA, CSIC, INST TECNOL QUIM, E-46071 VALENCIA, SPAIN
[2] INST CATALISIS & PETROLEOQUIM, MADRID 28049, SPAIN
关键词
MeAPO-5; (Me=Mg; Co); MeVAPO-5; vanadium oxide supported on MgO or Al2O3; ethane oxidative dehydrogenation; cyclohexane to cyclohexanol/cyclohexanone oxidation;
D O I
10.1016/0926-860X(96)00068-3
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
MeAPO-5 (Me = V, Co, Mg) and MeVAPO-5 (Me = Co, Mg) were prepared by hydrothermal synthesis and they were characterized by N-2 adsorption, XRD, FTIR of piridine adsorption/desorption, TPR and UV-visible spectroscopy. For comparative purpose, MgO- and Al2O3-supported vanadium catalysts were also prepared. Their catalytic properties for the oxidative dehydrogenation (ODH) of ethane and the oxidation of cyclohexane were studied. The ODH of ethane was studied, at atmospheric pressure, in the 500-600 degrees C temperature interval, with an ethane/oxygen/helium molar ratio of 4/8/88. The oxidation of cyclohexane was studied at 125 degrees C and an oxygen pressure of 10 kg/cm(2). Different catalytic behaviour was observed depending on the transition metal incorporated, the catalyst structure and the reaction studied. The importance of the redox and the acid character of the catalysts on their catalytic properties is discussed.
引用
收藏
页码:17 / 28
页数:12
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