制备凝胶后将其中溶剂替换这步怎么操作?我的理解就是把凝胶离心出来 然后浸泡在新溶剂一段时间 重复3~5次之后基本就可以认为置换好了不一定对哈,仅供参考。另外楼主也可以把原文更多的内容贴出来。 谢谢你的建议,我也是这样理解的,我是在一篇博士毕业论文上看到的,溶剂替换只在引言部分提到了上述两个地方,其中引用的一篇英文文献中有一段是这样的,“Silicate sols were prepared from tetraethoxysilane (TEOS) dissolved in ethanol using a two-step acid/base catalyzed procedure (referred to as B2). The gels were then subjected to a porefluid-exchange procedure using hexane, and the surface hydroxyls were partially replaced with organosilicon groups using a silylation procedure."没有具体的交换操作,我就先这样理解吧,查看更多