三齿吡啶型希夫碱钼（VI）配合物催化合成 环氧大豆油

Catalytic Synthesis of Epoxidized Soybean Oil by Tridentate Pyridine Schiff-base Molybdenum(VI) Complex

摘要:

“一锅法”合成了2-吡啶甲醛缩邻氨基酚希夫碱钼（VI）配合物MoO2(L)(EtOH)（L= 2-吡啶甲醛缩邻氨基酚），采用红外光谱（FTIR）、热重(TG)、光电子能谱(XPS)、元素分析、电感耦合等离子体发射光谱（ICP）对配合物的结构、金属含量进行表征。研究了该配合物在合成环氧大豆油中的催化活性，考察了反应温度、时间、催化剂用量、氧化剂与大豆油摩尔比对大豆油转化率、环氧产物选择性的影响。结果表明：在80℃，2-吡啶甲醛缩邻氨基酚希夫碱钼（VI）30 mg，大豆油与叔丁基过氧化氢是1:1.5(物质的量的比)，反应10 h的条件下，大豆油转化率为69.7%，环氧产物的选择性62.9%。

Abstract:

The molybdenum complex of pyridine Schiff-base, [MoO2(L)(EtOH)] [L=2-(pyridin-2-ylmethylidene)aminophenol] was synthesized using one-pot reaction. The complex was characterized the methods of by FTIR, TG, XPS, elemental analysis and ICP. The catalytic activity for the epoxidation of soybean oil by tert-butyl hydroperoxide was studied. The influencing factors of reaction were studied such as the reaction temperature, reaction time, mass of catalyst, soybean oil and oxidant molar ratio. Under the conditions of molar ratio of soybean oil to tert-butyl hydroperoxide = 1:1.5, dosage of catalyst = 30 mg, reaction temperature at 80℃ and reaction time = 10 h, the conversion of soybean oil is 69.7% and the selectivity of epoxidized soybean oil is 62.9%.