CAJ | 학술논문

将席夫碱锰配合物与硅钨酸结合制备出一种新颖的无机.有机杂化固体催化剂,通过红外光谱和热重表征数据推测出这种催化剂的组成和结构,并将其用于磷酸与等摩尔月桂醇酯化制备长链单烷基磷酸酯(MAP).结果表明,采用L~1-Mn-SiW(L~1:双水杨醛缩-1,6-己二胺)催化剂,在优化的反应条件下,酯化反应可获得93%的MAP收率和高达98%的MAP选择性.催化剂的重复使用测试表明,液-固多相酯化体系中该固体催化剂可方便地回收,且具有优异的稳定性,重复使用6次后催化剂活性未见下降,结构没有变化,是高效绿色催化剂.该催化剂作用下的磷酸酯化足固体碱催化过程.
장석부감맹배합물여규오산결합제비출일충신영적무궤.유궤잡화고체최화제,통과홍외광보화열중표정수거추측출저충최화제적조성화결구,병장기용우린산여등마이월계순지화제비장련단완기린산지(MAP).결과표명,채용L~1-Mn-SiW(L~1:쌍수양철축-1,6-기이알)최화제,재우화적반응조건하,지화반응가획득93%적MAP수솔화고체98%적MAP선택성.최화제적중복사용측시표명,액-고다상지화체계중해고체최화제가방편지회수,차구유우이적은정성,중복사용6차후최화제활성미견하강,결구몰유변화,시고효록색최화제.해최화제작용하적린산지화족고체감최화과정.
Inorganic-organic hybrids were prepared by combining Schiff base complexes of manganese with silicotungstic acid (SiW). The composition and structure of the hybrid L~1-Mn-SiW (L~1: N,N'-disalicylidene-1,6-hexanediamine) were characterized by infrared spectros-copy and thermogravimetry. They were used as solid catalysts in the esterifieation of phosphoric acid with equimolar lanryl alcohol to monoalkyl phosphate ester (MAP). Over the L~1-Mn-SiW catalyst, the yield and selectivity for MAP were 93% and 98%, respectively, at the optimal reaction conditions. The catalyst exhibited excellent recoverability during a six-cycle test without any observable change of the catalyst structure. A base-catalyzed reaction route was proposed.