A process for modifying various inorganic compounds defined by the formula: M(OH).sub.z (HQO.sub.4).sub.2 -z/2 . xH.sub.2 O wherein M is a metal ion selected from Groups IVA and IVB of the Periodic Table of Elements, Q is an anion selected from Groups VA and VIB of the Periodic Table of Elements, z is any value from 0 to 2 and x is a number of from 0 to 8, by replacing a hydrogen in the inorganic compound with a metal cation. Suitable cations include those elements selected from Groups IA, IIA, IIIA, IVA, IB, IIB, IIIB including the lanthanide and activide series, IVB, VB, VIB, VIIB and VIII of the Periodic Table of Elements and ammonium. Thereafter, elevation of the temperature causes modification of the crystalline structure of the exchanged compound and provides various novel crystalline phases. Substitution of dissimilar metal cations for those present in the heat modified structure, with or without subsequent washing with acid, or washing out of the original metal cations, creates still other crystalline phases.
一种用于改性各种无机化合物的方法,其定义为:M(OH).sub.z(HQO.sub.4).sub.2-z/2.xH.sub.2 O,其中M是从元素周期表的IVA和IVB组中选择的
金属离子,Q是从元素周期表的VA和VIB组中选择的负离子,z是从0到2的任意值,x是从0到8的数字,通过用
金属阳离子替换无机化合物中的氢来进行。适当的阳离子包括从元素周期表的IA,IIA,IIIA,IVA,IB,IIB,IIIB(包括
镧系和
锕系),IVB,VB,VIB,VIIB和VIII中选择的元素以及
铵离子。随后,提高温度会改变交换化合物的晶体结构,并提供各种新的晶体相。用不同的
金属阳离子替换热修改结构中存在的阳离子,是否使用酸进行后续洗涤,或清除原始
金属阳离子,可以创建其他晶体相。