CAJ | 학술논문

在无酸、无溶剂条件下，以[C16H33N(CH3)3]3[PO4(WO3)4]为反应控制相转移催化剂，研究各因素对脂肪酸甲酯（FAME）环氧化反应的影响。结果表明，水相pH对环氧化反应的影响最大，反应适宜pH为4；适宜反应条件为过氧化氢与脂肪酸甲酯中双键摩尔比为1.05：1，反应温度50～60℃，反应时间5 h。在此反应条件下催化剂循环5次不失活，产品环氧值大于4.0%，碘值小于5 g I·(100 g)?1。并通过元素分析与红外光谱，研究了催化剂在反应过程中的变化，认为磷钨杂多阴离子的分解是导致催化剂失活的关键原因。
재무산、무용제조건하，이[C16H33N(CH3)3]3[PO4(WO3)4]위반응공제상전이최화제，연구각인소대지방산갑지（FAME）배양화반응적영향。결과표명，수상pH대배양화반응적영향최대，반응괄의pH위4；괄의반응조건위과양화경여지방산갑지중쌍건마이비위1.05：1，반응온도50～60℃，반응시간5 h。재차반응조건하최화제순배5차불실활，산품배양치대우4.0%，전치소우5 g I·(100 g)?1。병통과원소분석여홍외광보，연구료최화제재반응과정중적변화，인위린오잡다음리자적분해시도치최화제실활적관건원인。
The influence of reaction conditions on epoxidation of unsaturated fatty acid methyl ester (FAME) under acid and solvent free conditions with [C16H33N(CH3)3]3[PO4(WO3)4] as a reaction controlled phase transfer catalyst was investigated. The results indicated that pH of the aqueous phase was the most important factor and the proper pH value of solution was 4. With molar ratio of hydrogen peroxide to double bond in FAME is 1.05:1, reaction at 50—60℃ for 5 h, the catalyst could be recycled 5 times without deactivation, and epoxy value of the product was more than 4.0%, while iodine value was less than 5 g I·(100 g)?1. Change of catalyst during the epoxidation process was investigated with IR spectroscopy and elemental analysis, and the result indicated that decomposition of heteropolyphosphatotungstate anion was the key reason for catalyst deactivation.