偏岭石结构研究  

The Study on Pianlinite Structure

作　　者：陈济舟[1] 刘长龄[2] 刘钦甫[3] 王俊桥[1] 张鹏飞[3] 陈新邦 

机构地区：[1]天津理工学院材料物理所,天津300191 [2]天津地质研究院,天津300061 [3]中国矿业大学(北京校区地质系),北京100083

出　　处：《沉积学报》2001年第2期309-314,共6页Acta Sedimentologica Sinica

基　　金：国家自然科学基金!(批准号 :4980 2 0 1 0 );天津市"材料物理与化学"重点学科资助

摘　　要：用广角度X射线散射 (WAXS)和由它得到的径向分布函数 (RDF)研究了偏岭石的结构。偏岭石是一种以非晶组份为主的部分有序的中间序性物质。构成偏岭石的结构单元是四面体 [MO4 ](M =Si,Al)和八面体 [AlO6](O =O ,OH)。偏岭石结构中近邻四面体与四面体共顶连接构成M—O层 ,八面体与八面体共棱或共面连接构成Al—O层 ;而四面体与八面体通过不规则的共顶连接构成近程层状结构。它的近程结构将不随序性或结晶性变化。它的微结构及其随热处理温度的变化主要决定于结构基元之间的关系和序性。Using the wide angle x ray scattering (WAXS) and radial distribution function (RDF), the structure of pianlinite occuring in China,has been discussed. It is shown that pianlinite is mainly composed of amorphous phase,with less amount of order phase. The structural units constructing pianlinite are tetrahedron [MO 4]( M=Si,Al) and octahetron[AlO 6] (O=O,OH).The connecting of neighbour tetrahedran with common vertex angle forms M—O layer(M=Al,Si),and the connection of neighbour octahedran with common edge or plane forms Al—O layer. The structure of pianlinite is formed from the such kind layers .Its structure change with temperatures is mainly caused by that of the correlation or order between structural units,and its structure in neighbour range is nearly unchanged.Pianlinite is a clay rock with the structure different from that of the metakaolinites.

关 键 词：偏岭石 结构 径向分布函数 广角度X射线衍射 热处理温度 

分 类 号：P578.964[天文地球—矿物学]