文献类型：期刊文献

英文题名：Mineralizing CO2 as MgCO3?3H2O Using Abandoned MgCl2 Based on a Coupled Reaction-Extraction-Alcohol Precipitation Process

作者：Chen, Guilan[1];Song, Xingfu[1];Dong, Chunhua[1];Sun, Shuying[1];Sun, Ze[1];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2016

卷号：30

期号：9

起止页码：7551

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20163902831083);WOS:【SCI-EXPANDED(收录号:WOS:000383641000073)】；

语种：英文

外文关键词：Magnesite - Ethanol - Carbon dioxide - Atmospheric pressure - Precipitation (chemical) - Chlorine compounds

摘要：A novel coupled reaction-extraction-alcohol precipitation process was proposed to mineralize CO2 as MgCO3 center dot 3H(2)O directly by abandoned MgCl2. Rod-like crystal MgCO3 center dot 3H(2)O was obtained, and the conversion rate of MgCl2 increased sharply by using this novel coupled reaction-extraction-alcohol precipitation process. The effect of an added C1-C3 alcohol precipitation agent on the conversion rate of MgCl2 was in the following order: ethanol > isopropanol > n-propanol > methanol. Moreover, the optimal conditions for the highest conversion rate of MgCl2 by single-factor experiments were obtained as follows: initial concentration of MgCl2 solution is 2 mol.L-1, volume ratio of ethanol and aqueous phase is 2, mole ratio of N235 and aqueous phase is 2, volume ratio of diluent and N235 is 0.5, with a stirring rate of 300 r.min(-1) at 298.15 K and at atmospheric pressure.