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The role of diffusion in the nucleation of calcium carbonate

文献类型：期刊论文

作者Dou, Xiangyu1,2,3; Huang, Haoyang1,2; Han, Yongsheng1,2
刊名CHINESE JOURNAL OF CHEMICAL ENGINEERING
出版日期2022-03-01
卷号43页码:275-281
关键词Calcium carbonate Nucleation Simulation Diffusion Dynamics
ISSN号1004-9541
DOI10.1016/j.cjche.2021.03.039
英文摘要Nucleation widely exists in nature, from cloud formation to haze generation. The classical nucleation theory (CNT) was created to describe the nucleation process, but it fails to predict many experimental phenomena due to the short consideration of nanoscale phenomena and macroscale dynamics. Although the attachment and detachment of monomers are considered in the developed model of nucleation, the diffusion of chemicals in the bulk is not valued as supersaturation in the nucleation process so far. Here we employ simulation and experimental approaches to investigate how the diffusion of ions affects the nucleation of calcium carbonate. The diffusion of ions is regulated by the viscosity of solvents and the sonication imposed on the solution. It is found that the nucleation rates increased exponentially with the diffusion coefficient of ions, which is beyond the prediction of CNT. This abnormal finding might be ascribed to the involvement of cluster aggregation in the nucleation of calcium carbonate. This study highlights the significance of chemical diffusion in the nucleation process, which may help to revise the nucleation theory and develop solutions for the rational synthesis of materials, as well as for the control of air pollution. (c) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
WOS关键词DYNAMICAL NUCLEATION ; AQUEOUS-SOLUTION ; FORCE-FIELD ; WATER ; TIME ; TEMPERATURE ; SIMULATION ; GLYCEROL ; SILICA ; GROWTH
资助项目National Natural Science Foundation of China[91934302] ; National Natural Science Foundation of China[21978298] ; National Natural Science Foundation of China[U1862117] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-01] ; MPCS Facility Upgradation Program
WOS研究方向Engineering
语种英语
WOS记录号WOS:000788133800015
出版者CHEMICAL INDUSTRY PRESS CO LTD
资助机构National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; State Key Laboratory of Multiphase Complex Systems ; MPCS Facility Upgradation Program
源URL[http://ir.ipe.ac.cn/handle/122111/53044]  
专题中国科学院过程工程研究所
通讯作者Han, Yongsheng
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Dou, Xiangyu,Huang, Haoyang,Han, Yongsheng. The role of diffusion in the nucleation of calcium carbonate[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2022,43:275-281.
APA Dou, Xiangyu,Huang, Haoyang,&Han, Yongsheng.(2022).The role of diffusion in the nucleation of calcium carbonate.CHINESE JOURNAL OF CHEMICAL ENGINEERING,43,275-281.
MLA Dou, Xiangyu,et al."The role of diffusion in the nucleation of calcium carbonate".CHINESE JOURNAL OF CHEMICAL ENGINEERING 43(2022):275-281.

入库方式： OAI收割

来源：过程工程研究所

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