关于聚合物提纯?After 24 h, the reaction mixture was filtered through a pad of silica gel to remove the coppercomplex. The filtrate was concentrated and then poured into a large amount of acetonitrile. Theprecipitate was purified by reprecipitation with DMF/acetonitrile and was then dried under reducedpressure to give poly-1 as a black powder.请问有大牛知道上述中的??a pad of silica gel??这个是啥意思, 是什么过滤用的器具???查看更多2个回答 . 16人已关注