介孔二氧化硅SBA-16接枝含氨基的有机硅烷偶联剂APTES对于固载药物、吸附生物质及催化反应具有重要的意义。研究了SBA-16接枝γ-氨丙基-3-乙氧基硅烷（APTES）的最佳反应条件。将SBA-16高温活化后，在甲苯、异丙醇、乙腈及二甲基亚砜4种不同极性的反应介质中接枝APTES，通过XPS、FTIR、BET等手段表征了接枝前后的样品。结果表明，低极性反应介质中APTES接枝效果优于高极性反应介质，极性越小越有利于硅烷化反应。在4种反应介质中，甲苯为最佳反应溶剂。在低极性甲苯溶剂中，通过单因素实验和正交实验分析法确定SBA-16的质量为1 g，APTES用量为1 mL，反应温度为80℃，反应时间为8 h时，其相对接枝率达到最大。

Grafting (3-aminoproy) triethoxy silane (APTES) onto mesoporous silica SBA-16 is of great significance for supporting medicines,biomass adsorption and catalytic reaction.The optimal reaction conditions for grafting APTES onto SBA-16 are studied.After being activated at high temperature,SBA-16 is grafted with APTES by using toluene,isopropyl alcohol,acetonitrile and dimethyl sulfoxide as reaction media respectively,and then the grafted SBA-16 samples and the pure SBA-16 samples both are verified by XPS,FTIR,EDS and BET.The results show that low-polar reaction medium is more beneficial than high-polar one for grafting APTES onto SBA-16.Toluene is the best reaction medium.In toluene solvent,by means of single factor and orthogonal experiment,it is demonstrated that the relative grafting rate reaches the maximum when the specimen contains 1 g of SBA-16,1 mL of APTES,and the reaction temperature and time are 80℃ and 8 h respectively.

戴浩(1990-),男,硕士生,研究方向为化工过程开发,574093381@qq.com