一种新型润滑油抗磨添加剂的研究 I. 溶胶-凝胶-超临界干燥法制备纳米TiO_2  

STUDY ON AN ANTI-WEAR ADDITIVES IN LUBE OIL Ⅰ. Nanosized TiO_2 Particles Prepared by the Sol-Gel-Surpercritical Fluid Drying Process

作　　者：蒋晓明[1] 王晓勇[1] 陈月珠[1] 

机构地区：[1]石油大学重质油加工国家重点实验室,北京102200

出　　处：《石油学报（石油加工）》2001年第6期24-29,共6页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：选用钛酸丁酯为原料 ,用溶胶 凝胶 超临界干燥法合成了TiO2 纳米粒子。结果表明 ,在c(Ti4 + ) =0 3～1 0mol/l,c(H2 O) /c(Ti4 + ) =2～ 12 ,c(HAc) =0 3～ 2 4mol/l这一较宽的范围内均可以得到TiO2 醇凝胶 ,经过适当老化时间后 ,进行超临界干燥 ,得到的TiO2 纳米粒子粒径是 2 0～ 30nm ,为球形。Nanosized TiO 2 particles were prepared by the sol gel surpercritical fluid drying processing from tetrabutyl titanate. The concentrations of reactants were confirmed as c (Ti 4+ )=0 3～1 0 mol/l, c (H 2O)/ c (Ti 4+ )=2～12 , c (HAc)=0 3～2 4 mol/l. Aging time and supercritical fluid drying processing were investigated as well. The result showed that the products were spherical, amorphous and fine, which sizes were of 20 nanometer.

关 键 词：纳米粒子 润滑油抗磨添加剂 溶胶-凝胶 超临界干燥法 二氧化钛 

分 类 号：TE624.81[石油与天然气工程—油气加工工程] TQ134.11[化学工程—无机化工]