Layered K2Pr2Ti3O10 is prepared by stearic acid method at lower temperature,and its acid-exchanging process is investigated.
采用硬脂酸法在相对较低的温度下制备了K2Pr2Ti3O10层状化合物,并研究了该化合物的酸交换过程。
The results showed that the input of hydrogen ions into soils could transform into positive charges, soluble Al and exchangeable acidity.
研究结果表明，氢离子输入土壤后可以转化为表面正电荷、可溶性铝和可交换性酸。
Cu-Al-MCM-41 catalysts with different copper ion-exchanged degree were investigated for the reduction of NO by propylene under lean-burn conditions.
利用程序升温反应技术考察了Cu交换度对Cu Al MCM 41上NO选择性还原反应性能的影响 ,同时结合XRD ,N2 吸附等温线 ,NMR ,ICP AES ,TPD和TPR等技术对催化剂的结构特征和化学吸附性能进行了表征 。
