新疆膨润土改性及MCM-41的制备研究  

Xinjiang Bentonite Modification and Preparation of MCM-41

作　　者：赵越[1] 贾汉忠[2] 汪立今[1] 陈红霞[1] 

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830000 [2]中国科学院新疆理化技术研究所,新疆乌鲁木齐830000

出　　处：《非金属矿》2015年第2期31-33,36,共4页Non-Metallic Mines

基　　金：国家自然科学基金(41462002)

摘　　要：以新疆某地钠基膨润土为原料,通过膨润土与氢氧化钠混合,经过碱溶处理,提取出膨润土中的主要成分Si和Al,生成硅酸钠和偏铝酸钠,加入十六烷基三甲基溴化铵,调节p H值分别为7.5、8.5、9.5、10.5,水热温度分别为80℃、100℃、120℃、140℃,高温煅烧温度分别为450℃、550℃、650℃、750℃,通过对比分析得出最合适的制备条件,成功制备出介孔分子筛MCM-41,并运用X射线衍射,傅里叶红外光谱,N2吸附-脱附等手段对材料进行表征,分析材料的稳定性。In this study, bentonite from Xinjiang Province was used as silicate and acuminate sources to mix with sodium hydroxide by adopting an alkaline fusion process to extract both silicon and aluminum which are main components in bentonite. We carried out the synthesis of MCM-41 from bentonite using the supernatants which are in the form of sodium silicate and sodium aluminates and then accommodate p H value for 7.5, 8.5, 9.5, 10.5 by adding sixteen alkyl three methyl bromide and hydrothermal temperature at 80 ℃,100 ℃120 ℃,140 ℃ by the hydrothermal method separately, calcinations＇ temperature were 450 ℃, 550 ℃, 650 ℃, 750 ℃ respectively. Compared with the experimental conditions for synthesis of MCM-41, we synthesized mesoporous molecular sieve MCM-41 from bentonite. On the basis of the data obtained from powder X-ray diffraction（XRD）, fourier transforms infrared spectroscopy and N2 adsorption and desorption, we analyzed stability of materials.

关 键 词：膨润土 介孔分子筛 稳定性 表征 

分 类 号：TD985[矿业工程—选矿] TQ424.25[化学工程]