其中，用甲醇和水处理后二次干燥获得较多的孔。主要分布在10-50nm之

Among them, more pores were obtained by second drying after treatment with methanol and water. Mainly distributed between 10-50nm, this result is consistent with the pore volume result mentioned above. That is, the sample after the methanol treatment contains many pores of 50 nm or less.

Among them, with methanol and water treatment after secondary drying to obtain more holes. Mainly distributed between 10-50nm, this result is consistent with the hole volume results mentioned above. That is, the methanol treated sample contains more capillary holes of less than 50 nanometers.

Among them, more pores were obtained by secondary drying after treatment with methanol and water. It is mainly distributed in the range of 10-50nm, which is consistent with the pore volume results mentioned above. That is to say, the samples treated with methanol contain more pores less than 50 nm.<br>