高镍含量二元金属柱撑粘土的制备

报道了一种制备多元金属柱撑粘土的新方法－生长法。将此法与通用的同晶取代法制得的样品进行比较，发现前者的镍含量远大于后者。此种交联物的底面间距约１．７ｎｍ，样品在ＩＲ谱中７４４ｃｍ＾－１处出现的吸收谱带可作为柱状物存在的标识，插入层间的柱状物中镍以六配位形式存在，是一种尖类晶石结构，处于这种状态的镍要比同晶取代进入Ｊｏｈａｎｓｓｏｎ离子中的镍更难于被还原。

Preparation of Bimetal Pillared Clays with More Amount of Nickel

Multi-metal pillared clay was prepared wih a new method--growth. The amountof nickel in the framework obtained from the said method was far more than that from the substitution. The layered spacing of the product was about 1. 7 nm. The band of 744 cm-1 on IR spectrum of sample may be a criterion for proving the presence of the pillar. The nickel ion in the pillar existed in a hexadentate form. The structure of the pillar was similar to the spinel. The nickel ion in this state was reduced more difficultly than that in Johansson ion.