文献类型：期刊文献

中文题名：累托石在水溶液中分散行为的研究

英文题名：Studies on the Dispersion Behavior of Rectorite in Suspensions

作者：柏子龙[1];陈漾[1];陈绍洲[1];常可怡[1]

机构：[1]华东理工大学石油加工研究所

年份：1998

卷号：24

期号：2

起止页码：157

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：中国石化总公司北京石油化工科学研究院资助

语种：中文

中文关键词：累托石;催化剂;流变学;分散;水溶液

外文关键词：rectorite; catalyst; rheology; dispersion

摘要：用流变学方法研究了累托石的稀溶液和浓溶液在聚合羟基铝离子溶液以及氟表面活性剂存在下的分散絮凝行为。累托石的稀溶液呈牛顿流体，颗粒间分散较好；而浓溶液中，颗粒间形成了连续的片架结构。聚合羟基铝离子的加入对累托石悬浮液中颗粒的絮凝有明显的促进作用，在浓的累托石悬浮液中形成了ＦＦ，ＥＦ，以及ＥＥ混合缔合结构。氟表面活性剂通过在累托石颗粒表面的吸附，对絮凝造成空间障碍，起到分散累托石颗粒的效果。
The dispersion and flocculation behaviors of rectorite in dilute and concentrated aqueous suspensions have been investigated by means of rheological measurements in the absence and presence of Al13 oligomer cation and a nonionic perfluoroether surfactant. Very dilute rectorite suspensions exhibit Newtonian flow and are deflocculated. At higher concentrations, the system behaves as a Bingham fluid and is thixotropic indicating that cardhouse network structure is formed. Increase of Al3+/clay ratio reduces considerably the viscosity and the Bingham yield value in concentrated suspensions and the particles aggregate to form a complex FF,EF,and EE flocculent structure. Perfluoroether is an efficient deflocculant for rectorite suspensions, adsorbed on the interface of rectorite to furnish steric hindrance to aggregation of particles.