搜索结果: 1-2 共查到“工学 Nano-SiO2”相关记录2条 . 查询时间(0.049 秒)
页岩具有极低的渗透率和极小的孔喉尺寸,传统封堵剂难以在页岩表面形成有效的泥饼阻止液相侵入,只有纳米级颗粒才能封堵页岩的孔喉,阻止液相侵入地层,维持井壁稳定,保护储层。采用硅烷偶联剂KH570对纳米SiO2进行超声表面改性,引入乙烯基功能基团,80℃下使其与温敏性单体N-异丙基丙烯酰胺(NIPAm)、亲水性单体丙烯酸(AA)共聚,通过调节NIPAm、AA摩尔比制得不同最低共溶温度(LCST)值的温敏...
Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols（图）
Preyssler heteropolyacid silica esterification salicylic acid
2013/10/13
An efficient and environmentally benign procedure for the catalytic esterification of salicylic acid with aliphatic alcohols, CnH2n+1OH (n = 1–5) and benzylic alcohols, RC6H4CH2OH (R = H, NO2, OCH3, B...