Metal Organic Frameworks as Solid Acid Catalysts for Acetalization of Aldehydes with Methanol
作者:Amarajothi Dhakshinamoorthy、Mercedes Alvaro、Hermenegildo Garcia
DOI:10.1002/adsc.201000537
日期:2010.11.22
Room temperature acetalization of aldehydes with methanol has been carried out using metal organic frameworks (MOFs) as solid heterogeneous catalysts. Of the MOFs tested, a copper-containing MOF [Cu3(BTC)2] (BTC=1,3,5-benzenetricarboxylate) showed better catalytic activity than an iron-containing MOF [Fe(BTC)] and an aluminium containing MOF [Al2(BDC)3] (BDC=1,4-benzenedicarboxylate). The protocol
已使用金属有机骨架(MOF)作为固体多相催化剂对醛进行了甲醇的室温乙缩醛化反应。在测试的MOF中,含铜的MOF [Cu 3(BTC)2 ](BTC = 1,3,5-苯三羧酸酯)显示出比含铁的MOF [Fe(BTC)]和含铝的MOF更好的催化活性。 [Al 2(BDC)3](BDC = 1,4-苯二甲酸)。该方案已针对一系列芳族和脂族醛进行了验证,可用于将各种醛以良好的收率保护成重要的乙缩醛,而无需除水。此外,还证明了该催化体系的可重用性和非均质性。通过粉末X射线衍射,Brunauer-Emmett-Teller表面积测量和用于转化为大量苯甲醛的失活催化剂的傅里叶变换红外光谱分析,进一步研究了MOF的结构稳定性。铜MOF作为缩醛化催化剂的性能与其他常规均相和非均相催化剂(如氯化锌,沸石和粘土)的性能相比具有优势。