硅铝层柱累托土的合成与表征  

Preparation and characterization of Si-Al-pillared rectorite

作　　者：王廷海 王学丽 韩燕 李耀 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2013年第6期470-472,共3页Petrochemical Technology & Application

摘　　要：以钠基累托土为原料,氯化铝和氢氧化钠配合物为铝交联剂,十六烷基三甲基溴化铵溶液(CTAB)为改性剂,正硅酸乙酯(TEOS)为硅源,分别制备了铝层柱累托土(Al-REC)、改性Al-REC和硅铝层柱累托土(Si-Al-REC),并借助X射线衍射仪(XRD)和傅里叶变换红外光谱仪(FTIR)对试样进行了表征。结果表明,在改性Al-REC中加入TEOS,有助于累托土层间的膨胀。Si-Al-REC的(001)晶面层间距为3.05 nm,较Al-REC(2.75 nm)有所提高。Si-Al-REC经600℃的100%水蒸气处理2 h后,比表面积保留率为79.2%,表明试样具有较高的水热稳定性。Aluminum pillared rectorite （Al - REC）, modified Al- REC and silicon- aluminum pillared rectorite （ Si - Al - REC ） were synthesized with sodium based rectorite as material,the mixture of aluminium chloride and sodium hydroxide as alu- minum crosslinker, cetyl trimethyl ammonium bro- mide （CATB） solution as modifier, and tetraethox- ysilane（TEOS）as silicon source. The three kinds of rectorite above mentioned were characterized by X - ray diffraction or/and Fourier transform infrared spectroscopy. The results showed that the introduceof TEOS was of benefit to the expansion between the layers of modified Al - REC. The interplanar （001） spacing of Si - Al - REC was 3.05 nm, larger than that of Al- REC （2.75 nm）. After having been treated in 100% steam 600 ℃ for 2 h,Si-Al- REC retained 79.2% of specific surface area, impl- ying that it had high hydrothermal stability.

关 键 词：累托土 铝层柱累托土 改性 硅铝层柱累托土 傅里叶变换红外光谱 X射线衍射 

分 类 号：TE624.91[石油与天然气工程—油气加工工程]