粉煤灰沸石碱性活化方法研究  

Study on alkali-activated fly ash methods for zeolite

作　　者：邓慧[1] 郭畅[1] 姜虎生[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《无机盐工业》2014年第11期1-4,共4页Inorganic Chemicals Industry

摘　　要：粉煤灰是一种主要成分为硅铝酸盐的工业废弃物,粉煤灰沸石合成转化是其高值化应用的一个发展方向。利用碱性试剂活化粉煤灰是粉煤灰合成沸石的重要途径,研究比较了粉煤灰碱性活化合成沸石的干法和湿法工艺,包括水热法、高温熔融水热法和盐熔法的现状、特点、合成机理,并对碱性活化剂氢氧化钠、硅铝比、煅烧条件等影响因素做了分析研究。Fly ash is a kind of industrial solid waste whose major component is crystal aluminum-silicate.Synthesizing zeolite from fly ash is a development trend for high-value application.The alkali-activation of fly ash is an important way for synthesis of zeolite.The dry and wet technologies of alkali-activation of fly ash for synthesis of zeolite were summarized.Current study situation, characteristics, and reaction mechanism of hydrothermal process, high temperature fusion followed by hydrothermal process and alkaline molten-salt process were researched, respectively.The factors, such as NaOH （alkaline activating agent）, ratio of SiO2 to A1203, and calcination conditions, were also studied and analyzed.

关 键 词：粉煤灰 沸石 合成 碱活化 

分 类 号：TQ127.2[化学工程—无机化工]