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Home  >  Journal list  >  Journal of the Ceramic Society of Japan ( 2003 - 2007 )  >  Vol.114  No.1329 (May) (2006)  >  pp.392-394

Journal of the Ceramic Society of Japan ( 2003 - 2007 )
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Low Temperature Recycling Process for Barium Titanate Based Waste

Koichi KIKUTA1), Yasumitsu SHIMIZU1), Masayoshi MORIYA1), Toshiaki YAMAGUCHI1), Shin-ichi HIRANO1), Yoshinori SAITO2), Toshiyuki MIYOSHI2), Hiroshi YAMAMOTO2) and Yukio SAKABE2)
1) Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
2) Murata Manufacturing Co., Ltd.


  A recycling process was developed for barium titanate based waste material, which is produced in the large scale industrial production of ceramic capacitors and related devices. Barium titanate powder was first dissolved in a concentrated aqueous HCl solution, followed by dilution with water and heating to 100°C, which resulted in the precipitation of a white crystalline titania powder. The crystalline phase of the prepared titania can be controlled by the preparation conditions, i.e., heating rate, and this process successfully produced pure anatase powder with good photo-catalytic activity. The barium ion, another main component, was also separated as barium sulfate by a simple precipitation process.



Keyword:
Recycle process, Barium titanate, Photocatalyst, Anatase, Rutile

Received: February 21, 2006
Accepted: March 16, 2006 , Published online: May 01, 2006
Copyright (c) 2006 The Ceramic Society of Japan

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