Controllable Synthesis of Various CaCO3 Morphologies Based on a CCUS Idea

详细信息    查看全文

• 作者：Feng Sha ; Ning Zhu ; Yijia Bai ; Qiang Li ; Bo Guo ; Tianxiang Zhao ; Fei Zhang ; Jianbin Zhang
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：June 6, 2016
• 年：2016
• 卷：4
• 期：6
• 页码：3032-3044
• 全文大小：1032K
• 年卷期：0
• ISSN：2168-0485

文摘

A novel, green, and economic CaCO₃ synthesis method using a CO₂-storage material (CO₂SM) was developed based on the strategy of carbon capture, utilization, and storage (CCUS). In this process, CO₂SM was used as both a CO₂ source and a crystal modifier to regulate and control the crystallization of CaCO₃. 1,4-Butanediol (BDO) and/or 1,2-ethanediamine (EDA) from CO₂SM played unexpected roles as a surfactant, structure-directing agent, and/or pH modulator. The effects of CO₂SM concentrations, reaction temperatures, and reaction times were systematically investigated. Pure calcite (bundle-like and dumbbell-like) and pure vaterite (oblate spheroid and snowball-like) CaCO₃ products were obtained. Moreover, the CO₂SM was recycled to prepare same crystal phase CaCO₃ upon the addition of an appropriate amount of Ca(OH)₂ with 120 g·L^–1 CO₂SM concentration.