国产凹凸棒土的研究

对几种国产凹凸捧土进行研究，为该土的应用提供了一些基础性数据．结果表明，盱眙、明光凹凸棒上的纯度高于六合土，热稳定性、酸稳定性较好，只有少量Ｌ磁，无Ｂ酸，与美国佐治亚典型凹凸棒土相比，具有富镁贫铝及高表面积的特点，是较好的催化剂载体。

Study on Chinese Attapulites

The physical aidchemical properties of several Chinese attapulgites have been studied by XRD,SEM,DTA,BET and IR etc. techniques. The results show that both the attapulgites in the areas of Mingguang,Anhui province and Xuyi,Jiangsu province have a higher purity than that originated from Luhe,Nan-jing.Both the Minguang and Xuyi clays get fairly good thermal and acid stability.The IR spectra of pyridine adsorption results show that the raw clay or acid treat-ed clay has only Lewis acid sites and no Bronsted acid sites are observed.The Mingguang and Xuyi clays give the inrichment of magnesium. poor aluminum and high surface area as compared with the attapulgite of Georgia,U. S.A,They can be used as a potential carrier for a catalyst.