Large-scale preparation of barium sulphate nanoparticles in a high-throughput tube-in-tube microchannel reactor

Large-scale preparation of barium sulphate nanoparticles in a high-throughput tube-in-tube microchannel reactor
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高通量管中管微通道反应器大规模制备纳米硫酸钡

DOI:
10.1016/j.cej.2009.02.018
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发表时间:
2009-07
影响因子:
15.1
通讯作者:
Wang, Qi-An
Wang, Qi-An
中科院分区:
工程技术1区
文献类型:
--
作者:
An, Yong-Tao;Chen, Jian-Feng;Wang, Jie-Xin;Gu, Lin;Li, Min;Shao, Lie;Wang, Qi-An

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提出了一种提高微反应器生产率的方法,而不需要计数过程,通过使用新提出的微孔管中管微通道反应器(MTMCR),具有高通量的9 L/min。硫酸钡纳米粒子的平均粒径为37 nm,窄尺寸分布成功地在MTMCR。硫酸钡颗粒的尺寸强烈依赖于反应物在微通道中的流速,并且高流速有利于产生小颗粒。此外,通过改变反应物浓度和内管表面的粒径,可以将平均粒径控制在30 ~ 150 nm的范围内。平均粒径随反应物浓度和总流量的增加或粒径的减小而减小。分散相流速和混合距离对颗粒尺寸影响不大。所提出的微反应器概念被证实是有效的,并有前途的纳米粒子的工业生产。
One method for increasing productivity of a microreactor is presented without demanding numbering-up processes by using a newly proposed microporous tube-in-tube microchannel reactor (MTMCR) with a high throughput of 9L/min. Barium sulphate nanoparticles with an average size of 37nm and a narrow size distribution were successfully produced in MTMCR. The size of barium sulphate particles was strongly dependent on the flow rate of the reactants in the microchannel and high flow rate was beneficial for producing small particles. Furthermore, it was possible to control the average particle size in the range from 30 to 150nm by changing the reactant concentrations and the micropore size on the surface of the inner tube. The average particle size decreased by increasing the total flow rate and reactant concentrations or decreasing the micropore size. The dispersed-phase flow rate and mixing distance exhibited little effects on the particle size. The proposed microreactor concept was confirmed to be valid and promising for the industrial production of nanoparticles.
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发表时间: 2003-02-01
期刊: NANO LETTERS
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