Preparation of Ultrafine Barium Sulfate in Impinging Streams Microreactor

doi:10.3724/SP.J.1077.2006.01079

Journal of Inorganic Materials

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Preparation of Ultrafine Barium Sulfate in Impinging Streams Microreactor

WU Guo-Hua, ZHOU Hong-Zhao, ZHU Shen-Lin

Department of Chemical Engineering, State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2005-09-19 Revised:2005-12-23 Published:2006-09-20 Online:2006-09-20

Abstract

Abstract:

PAANH₄ was used as dispersant to improve the dispersibility of particles. The velocity and angle of the impinging streams were investigated to obtain the optimum conditions. Ultrafine barium sulfate particles were prepared in the impinging streams microreactor. The ultrafine particles were characterized by XRD, TEM, and BET. The results indicate that micromixing and homogeneous supersaturation of the reaction are enhanced by impinging streams. The product is obtained as particles with mean size of 100nm and specific surface area of 60m^2·g^-1.

Key words: impinging streams, microreactor, ultrafine barium sulfate

CLC Number:

TQ027
TF12

WU Guo-Hua,ZHOU Hong-Zhao,ZHU Shen-Lin. Preparation of Ultrafine Barium Sulfate in Impinging Streams Microreactor[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2006.01079.

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Preparation of Ultrafine Barium Sulfate in Impinging Streams Microreactor

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