Synthesis of cis-Dioxomolybdenum(VI)-tridentate Schiff Base Complexes and Its Catalytic Activity on the Epoxidation of Soybean Oil

被引：4

作者：

Zhang Shu-Yuan ^{[1
]}

Jiang Ping-Ping ^{[1
]}

Leng Yan ^{[1
]}

Xu Yu-Cheng ^{[2
]}

Mo Guan-Tian ^{[2
]}

Bian Gang ^{[1
]}

机构：

[1] Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Food Colloids & Biotechnol, Minist Educ, Wuxi 214122, Peoples R China

[2] Guangzhou Xinjinlong Chem Addit Co Ltd, Guangzhou 510800, Guangdong, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2013年 / 34卷 / 07期

关键词：

cis-Dioxomolybdenum(VI)-tridentate schiff base complex; Catalyst; Epoxidation; Soybean oil; Reaction mechanism; DIOXOMOLYBDENUM(VI) COMPLEXES; ORGANIC HYDROPEROXIDES; VEGETABLE-OILS; LIGANDS; ACID;

D O I：

10.7503/cjcu20121093

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The tridentate Schiff base ligand salicylaldehyde-2-hydroxyanil(H(2)SAP) was obtained via a Schiff base condensation reaction between salicylaldehyde and o-aminophenol in ethanol medium. cis-Dioxomolybdenum(VI)-tridentate Schiff base complex MoO2 (SAP) (EtOH) was synthesized by mixing H(2)SAP with a solution of MoO2(acac)(2) in ethanol. MoO2(SAP) (EtOH) was characterized and its catalytic activity was examined for epoxidation of soybean oil(SBO). The effects of types of oxidants, reaction temperature, time, solvent and additives on the epoxidation of SBO were discussed in detail. The conversion and selectivity of epoxidized soybean oil (ESO) reach 43.0% and 67.2%, respectively, at 80 degrees C for 4 h, with tert-butyl hydroperoxide (65% TBHP, mass fraction) as oxidant. Meanwhile, the epoxide yield was related to the nature of additives. The yield of ESO reduced dramatically by adding strong coordinating ligands such as imidazole. The mechanism of interaction between the catalyst and oxidant was also investigated.

引用

页码：1703 / 1708

页数：6

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