典型文献
Establishment of nucleation and growth model of silica nanostructured particles and comparison with experimental data
文献摘要：
A mathematical model is developed for the calculation of the nucleation and growth process of silica nanostructured particles prepared by using the drop-by-drop method,and the calculation results of the proposed model is compared with the experimental value obtained from SAXS data.The model pro-vides a non-ideal improvement in the supersaturation calculation and considers the impact of both mass transfer and surface reaction on the particle growth rate.The nucleation and growth rates are coupled depending on the change in monomer concentration over time,based on which the particle size and dis-tribution are calculated.The growth curve of the silica particles from 3 nm to 20 nm and the change in particle number from 0 to over 1020 are calculated,which are consistent with the experimental values,establishing the reliability of the model.The calculations of the growth rate reveal that mass transfer con-trols the growth of silica particles before 10 min and the surface reaction is the rate-determining step after 10 min.The changes in the model parameters obtained by fitting with the SAXS data under different reaction conditions indicate the sensitivity of the corresponding process to different conditions.Moreover,the relationship between the particle growth rate and monomer concentration change is ana-lyzed using the proposed model.
文献关键词：
中图分类号：
作者姓名：
Yubai Liu;Zhiyuan Yu;Thomas Pelster;Ting-Tai Lee;Yujun Wang;Guangsheng Luo
作者机构：
State Key Lab of Chemical Engineering,Department of Chemical Engineering,Tsinghua University.Beijing 100084,China;Evonik Operations GmbH,Brühler Stra?e 2,Wesseling 50389,Germany;Evonik Specialty Chemicals(Shanghai)Co.,Ltd.,Shanghai 201108,China
文献出处：
引用格式：
[1]Yubai Liu;Zhiyuan Yu;Thomas Pelster;Ting-Tai Lee;Yujun Wang;Guangsheng Luo-.Establishment of nucleation and growth model of silica nanostructured particles and comparison with experimental data)[J].中国化学工程学报（英文版）,2022(10):379-388
A类：
B类：
Establishment,nucleation,growth,model,silica,nanostructured,particles,comparison,experimental,data,mathematical,developed,process,prepared,by,using,drop,method,results,proposed,compared,obtained,from,SAXS,vides,ideal,improvement,supersaturation,considers,impact,both,mass,transfer,surface,reaction,rates,coupled,depending,monomer,concentration,which,size,dis,tribution,calculated,curve,number,consistent,values,establishing,reliability,calculations,reveal,that,trols,before,determining,step,after,changes,parameters,fitting,under,different,conditions,indicate,sensitivity,corresponding,Moreover,relationship,between,ana,lyzed
AB值：
0.424957
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