Simulation of Nucleation, Growth, and Aggregation of Nonaparticles in Supercritical Water
A simulation model was developed for predicting the particle size evolution in hydrothermal synthesis of nanoparticles in supercritical water.Four elementary kinetic processes, including hydrothermal synthesis reaction, nucleation, growth, and aggregation, were involved based on the population balance equations (PBEs).The homogenous nucleation of metal oxide nanoparticles started at the operation time of 3.72μs.When the rate constant of hydrothermal synthesis reaction Ink increased from 2.8 to 6.16, the nucleation rate increased by three orders of magnitude (1021-1024particles/m3·s) and the nucleation period reduced from 0.2s to less than 0.02s.The APS decreased by approximately half when a ten-fold smaller growth rate constant was adopted in the range of 10-1-10-8.
supercritical water nonaparticles numerical simulation particle size distribution
LU Zhou Shuzhong Wang Honghe Ma
School of Energy and Power Engineering, Xian Jiaotong University, Xian 710049, China
国际会议
杭州
英文
1071-1074
2013-01-18（万方平台首次上网日期，不代表论文的发表时间）