油页岩灰渣酸法制备纳米白炭黑控制粒径的工艺研究

Preparation and size control of nano-silica using acid leaching method by oil shale ash

以茂名油页岩灰渣为原料,采用酸溶碱溶二步法制备白炭黑,考察了乙酸乙酯的用量、分散剂的种类、分散剂的加入量、反应的温度等因素,对白炭黑粒度的影响。结果表明,当乙酸乙酯加入量为3m L·g-1;采用PEG-6000分散剂,添加量为3.5%;反应温度40℃时,白炭黑的粒径最小为54nm。

Nano-silica was prepared by acid-alkaline two steps using the oil shale ash as the raw material.The effect of parameters on the size of nano-silica were discussed including acetic ether quantity, species and dosage of dispersant agent, reaction temperature. And the results showed that when 3m L·g^-1acetic ether, 3.5%（W/W）PEG-6000 were added to silica liquid at 40℃, the particle size of silica was smallest and the size was 54 nm.