Preparation of Highly Dispersed CaCO3 Nanoparticles in a Novel Membrane Dispersion Microreactor by a Chemical Coprecipitation Process

• DOI: 10.1021/acs.iecr.2c01114
• Publication Date: 2022-05-25T14:00:33Z
• Authors: Xin Wan; Duan Liu; Yi Ye; Jianhong Luo
• Keywords: Coprecipitation; Microreactor; Supersaturation

A chemical coprecipitation method has been developed for the preparation of CaCO3 nanoparticles using a novel membrane dispersion microreactor with calcium chloride, sodium carbonate, and hydroxide as reagents. Compared traditional process in stirred tank reactor, developed, which makes it easier to control crystal size. The effects supersaturation, reaction time, feed flow rate, temperature on size particles have investigated. Synthesized products are characterized by TGA, FT-IR, XRD, SEM, TEM, BET. results show that prepared this procedure reaches 18.8 nm, surface area 45.94 m2/g. methods, dispersed is important application value because its smaller mean particle size, lower cost, higher efficiency. Furthermore, scope more extensive no additional additives.