利用溶胶-凝胶法制备不同尺寸的疏水型SiO2纳米微粒的研究(英文)  

Preparation of hydrophobic silica nanoparticles with different size by sol-gel technology

作　　者：罗健辉[1] 张雨露[2] 杨博文[2] 叶龙强[2] 丁彬[1] 江波[2] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]四川大学化学学院,四川成都610064

出　　处：《化学研究与应用》2013年第8期1136-1139,共4页Chemical Research and Application

基　　金：中国石油天然气集团公司课题(2011A-1001)资助

摘　　要：本文利用溶胶-凝胶(sol-gel)技术并在Stber法的基础上,制备了粒径尺寸在20 nm到90 nm可控的SiO2纳米微粒。通过控制氨水的起始浓度可较为便捷的调控粒子的尺寸。六甲基二硅氮烷(HMDS)用做疏水改性剂,以调整纳米微粒的润湿性。改性粒子的红外光谱亦证明了HMDS的成功引入。这些疏水亲油的纳米微粒可望用于纳米液中,以增大注水量并最终提高油层采收率。Silica nanoparticles with particle size ranged from about 20 nm to 90 nm were prepared by sol-gel technology based on Stber method.The particle size could be controlled conveniently by varying the initial concentration of ammonia.Hexamethyldisilazane（HMDS） was used to modify the wettability of these silica nanoparticles and FTIR spectral demonstrated that HMDS was successfully introduced in the surface of silica particles.The obtained hydrophobic and lipophilic nanoparticles are expected for the use of nanofluids,which could improve the water injection and therefore enhance oil recovery.

关 键 词：SiO2纳米微粒 溶胶-凝胶技术 六甲基二硅氮烷 可湿性 油层采收率 

分 类 号：O613.72[理学—无机化学]