The direct epoxidation of propene by molten salts

被引：31

作者：

Nijhuis, TA ^{[1
]}

Musch, S ^{[1
]}

Makkee, M ^{[1
]}

Moulijn, JA ^{[1
]}

机构：

[1] Delft Univ Technol, Dept Chem Engn, NL-2628 BL Delft, Netherlands

来源：

APPLIED CATALYSIS A-GENERAL | 2000年 / 196卷 / 02期

关键词：

propene; propene oxide; oxidation; epoxidation; molten salt; mechanism;

D O I：

10.1016/S0926-860X(99)00476-7

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 epoxidation of propene using molten salts has been investigated. This manner of direct propene epoxidation has been developed by Olin, claiming propene oxide selectivities of up to 65% at 15% propene conversion. A number of different molten salt mixtures were applied and several components were added in an attempt to increase selectivity. By comparing the epoxidation results in the molten salts to experiments using the same, but empty reactors, an attempt was made to clarify the mode of operation of the salt. It was concluded that the salt acts as a catalyst in the formation of free radicals, necessary for the homogeneous gas-phase oxidation taking place in the gas bubbles present in the molten salt medium. The salt, therefore, does not actually take part in the oxidation reaction, but only acts as an initiator to the radical reaction process. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：217 / 224

页数：8

共 13 条

[1] THE OXIDATION OF ETHYLENE AND PROPYLENE IN THE GAS PHASE [J].

BURGOYNE, JH ;

COX, RA .

JOURNAL OF THE CHEMICAL SOCIETY, 1953, (MAR) :876-883

[2] A KINETIC MODELING STUDY OF PROPENE OXIDATION IN JS']JSR AND FLAME [J].

DAGAUT, P ;

CATHONNET, M ;

BOETTNER, JC .

COMBUSTION SCIENCE AND TECHNOLOGY, 1992, 83 (4-6) :167-185

[3]

FULLINGTON MC, 1992, Patent No. 09588

[4]

GRIGORYAN RR, 1986, KINET CATAL+, V27, P673

[5]

Hayashi T., 1996, AM CHEM SOC DIV PETR, V41, P71

[6] Direct epoxidation of propene using gold dispersed on TS-1 and other titanium-containing supports [J].

Nijhuis, TA ;

Huizinga, BJ ;

Makkee, M ;

Moulijn, JA .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (03) :884-891

[7]

OLIN CORP, 1991, Patent No. 4992567

[8]

PENNINGTON BT, 1988, Patent No. 0268870

[9]

PRALUS M, 1979, FUNDAMENTAL RES HOMO, P327

[10]

SHLEDON RA, 1981, METAL CATALYZED OXID, P33

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