Mechanism of nanoparticle generation by high-temperature methods

被引:6
作者
Balabanova, E [1 ]
机构
[1] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria
关键词
nanoparticles; modelling; free-molecule coagulation; coalescence; thermal plasma;
D O I
10.1016/S0042-207X(00)00166-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The mechanism of silica nanoparticle generation by high-temperature (flame and thermal are plasma) methods is studied by modelling. Processes responsible for particle formation and growth are considered. Parameters such as temperature, characteristic coagulation and coalescence time and residence time-influencing particle structure are investigated. It is found that the thermal are plasma method allows production of unaggregated particles while the flame method creates large particle aggregates. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:174 / 182
页数:9
相关论文
共 21 条
[1]  
[Anonymous], 1955, MEKHANIKA AEROZOLEI
[2]  
Balabanova E. G., 1997, High Temperatures - High Pressures, V29, P711, DOI 10.1068/htec399
[3]   MODELING OF THE PROCESSES OF ULTRAFINE SIO2 PRODUCTION UNDER THERMAL PLASMA CONDITIONS [J].
BALABANOVA, EG ;
LEVITSKY, AA ;
OLIVER, DH .
CZECHOSLOVAK JOURNAL OF PHYSICS, 1994, 44 (02) :139-152
[4]   Role of the mixing process in a flow plasma reactor for ultrafine powder production [J].
Balabanova, EG .
HIGH TEMPERATURES-HIGH PRESSURES, 1998, 30 (04) :493-500
[5]  
Barthel H., 1998, SILICA 98, VI, P323
[6]  
David Kingery W., 1976, INTRO CERAMICS, V17
[7]  
DEFAUX DP, 1995, COMBUST FLAME, V10, P350
[8]  
Edelstein A. S., 1996, NANOMATERIALS SYNTHE, DOI 10.1201/9781482268591
[9]  
FAUCHAIS P, 1983, TOP CURR CHEM, V107, P59
[10]  
Frenkel J., 1945, J. Phys. (USSR), V9, P385