【摘要】 采用高纯氮气保护 ,用傅立叶变换红外光谱 -程序升温脱附 (FTIR TPD)方法对凹凸棒土的表面性质进行研究。与重水的交换实验表明 ,凹凸棒土上有活泼羟基 ;吸附吡啶的FTIR -TPD实验表明 ,凹凸棒土上存在三种B酸中心 ,且吡啶还与凹凸棒土中的碱金属阳离子形成PY M+ ;吸附甲酸的FTIR TPD实验表明 ,凹凸棒土上有较强的碱性中心。更多还原

【Abstract】 Under an atmosphere of pure nitrogen, the surface properties of surface hydroxyl on the attapulgites were studied by means of FTIR TPD Active hydroxyls on the attapulgite were found in the experiment exchanging D 2O And it was shown that 3 types of B acid sites existed by adsorbing pyridine Moreover, the interaction of cations in the attapulgite with pyridine formed the bond of PY M + The results showed that basic sites existed by adsorbing methane acid更多还原