GIP-GAS-DYNAMICALLY INDUCED NANOPARTICLE PRODUCTION
The variety of processes for gas-phase nanoparticle synthesis can be reduced down to just a small number, if high mass throughputs are desired (flame reactors, hot wall reactors, plasma reactors). An innovative concept of a high throughput gas phase particle reactor has been proposed by Dannehl et al. (2007), in which both the initiation of the chemical reaction and the quenching of the high-temperature gas flow are realized by gas-dynamic shocks in a reactor with two supersonic nozzles. (Fig. 1). The quenching of the high-temperature particle loaded gas flow is achieved by accelerating the flow from subsonic to supersonic speed which decreases the static temperature below the sinter temperature of the particles. Because of the homogeneous flow field, adjustable residence times and high heating and quenching rates, a tuneable size distribution and aggregation is achieved (Grzona et. al., 2009, Goertz et al. 2010). Therefore the described method is a powerful alternative for manufacturing nano-scaled and monodispersed material.
Manfred Dannehl Yves-Gorat Stommel Manfred Nagel Michael Roeck
Evonik Degussa GmbH, Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang, Germany
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
23-24
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）