Production of propylene from an unconventional metathesis of ethylene and 2-pentene over Re2O7/SiO2-Al2O3 catalysts

被引：16

作者：

Phongsawat, Weena ^{[1
]}

Netivorruksa, Benjamas ^{[1
]}

Suriye, Kongkiat ^{[2
]}

Dokjampa, Siraprapha ^{[2
]}

Praserthdam, Piyasan ^{[1
]}

Panpranot, Joongjai ^{[1
]}

机构：

[1] Chulalongkorn Univ, Ctr Excellence Catalysis & Catalyt React Engn, Dept Chem Engn, Fac Engn, Bangkok 10330, Thailand

[2] SCG Chem CO LTD, Bangkok 10800, Thailand

来源：

JOURNAL OF NATURAL GAS CHEMISTRY | 2012年 / 21卷 / 01期

关键词：

metathesis; propylene production; 2-pentene; rhenium; silica-alumina; RHENIUM-BASED CATALYSTS; MESOPOROUS MOLECULAR-SIEVES; OLEFIN METATHESIS; ALUMINA CATALYST; OXIDE; DEACTIVATION; ALKENE; ISOMERIZATION; GAMMA-AL2O3; SELECTIVITY;

D O I：

10.1016/S1003-9953(11)60337-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

An unconventional metathesis of ethylene and 2-pentene over Re2O7/SiO2-Al2O3 catalysts has been studied as an alternative route for the production of propylene. Complete conversion of 2-pentene and propylene yield as high as 88 wt% were obtained under mild reaction conditions at 35 degrees C and atmospheric pressure. Unlike the conventional metathesis of ethylene and 2-butenes in which isomerization is a competing side reaction, the isomerization of 1-butene product from the unconventional metathesis of ethylene and 2-pentene to 2-butenes can further react with excess ethylene in the feed, resulting in additional increase in propylene yield. The secondary metathesis reaction was found to be favored under ethylene/2-pentene (E/2P) molar ratio >= 3 and gas hourly space velocity (GHSV) <= 1000 h(-1) at the reaction temperature of 35 degrees C. No catalyst deactivation was observed during the 455 min time-on-stream under the selected reaction conditions.

引用

页码：83 / 90

页数：8

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