Experimental study of continuous ultrasonic reactors for mixing and precipitation of nanoparticles

被引：34

作者：

Pohl, B. ^{[1
]}

Jamshidi, R. ^{[2
]}

Brenner, G. ^{[2
]}

Peuker, U. A. ^{[1
]}

机构：

[1] TU Bergakademie Freiberg, Inst Mech Porc Engn & Mineral Proc, D-09599 Freiberg, Germany

[2] Tech Univ Clausthal, Inst Appl Mech, D-38678 Clausthal Zellerfeld, Germany

来源：

CHEMICAL ENGINEERING SCIENCE | 2012年 / 69卷 / 01期

关键词：

Mixing; Precipitation; Particle formation; Design; Cavitation; Sono-chemical flow reactors; BARIUM-SULFATE; MICROMIXING EFFICIENCY; SONOCHEMICAL REACTIONS; REACTION SYSTEM; MODEL REACTION; CAVITATION; FREQUENCY;

D O I：

10.1016/j.ces.2011.10.058

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Nanoparticles can be synthesized by precipitation. State-of-the-art is the precipitation of nanoparticles in stirred tanks or high-pressure T-mixers. The study presents two new reactor concepts for continuous precipitation of nanoparticles. Both of them utilize ultrasonic sound as a mixing accelerator. The first reactor has a conical chamber (10 mL), which is used to study the micromixing quality, the cavitation intensity and the precipitation of barium sulfate nanoparticles. The second reactor has a so-called cavitational chamber (2.5 mL), which is an optimized conical reactor. Both reactors are compared with each other with respect to the properties of the products. Additionally, the influence of the ultrasonic output from the transducer to the liquid and the feed rate are demonstrated. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：365 / 372

页数：8

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