Abstract: Organic base-functionlized periodic mesoporous organosilicas(PMO) molecular sieves were synthesized by the direct co-condensation synthesis process.Powder X-ray diffractions confirmed that the structures resembled those of the mesoporous silica material.FTIR showed that the base sites existed separately on the surface of PMOs.The results of thermogravimetric analysis(TGA) showed that the base sites were still stable at temperatures higher than 300 ℃; and the ethane group in the framework was stable at temperatures below 500 ℃.These novel solid base catalysts were used for the esterifiaction of oleic acid with methanol.The conversion of oleic acid increased as the base strength and base sites number increased.Their activities changed as PMO-DN>PMO-Py>PMO-N.The XRD intensities after reaction were much higher than before reaction.It might be attributed to the fact that the base-ethanol solution could not remove all the structure-directing agent from samples.

摘要： 采用水热法直接合成出表面含有机碱中心的介孔有机硅分子筛PMOs催化剂.XRD分析结果表明，3种有机碱改性的催化剂都具有介孔分子筛的完整晶体结构.红外光谱IR分析结果证明了在分子筛的表面含有机碱基团.热失重（TGA）分析认为各种有机碱中心在有机介孔分子筛表面的热稳定性高于300 ℃，骨架中的乙烷基在低于500 ℃下保持稳定.甲醇与十八碳烯酸的酯化反应结果表明，十八碳烯酸的转化率随碱强度和碱中心数增加而升高，催化剂活性的顺序为PMO-DN>PMO-Py>PMO-N；3个催化剂反应后的XRD衍射强度比反应前都加强，分析认为与模板剂的脱除方法——碱化乙醇溶液有关.