The petroleum acids in crude oil were separated by extraction with column chromatogram and anion exchange resin. The sep......

为了探索合成fullerene二酯,特选用乙二醇与苯甲酸反应制取双酯作为模式获得成功。对酯化反应产物用核磁共振(NMR)、化学电离质谱(......

Naphthenic acids in petroleum are considered a class of biological markers. Their potential use in source correlation an......