KR970074655A - Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin - Google Patents

Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin Download PDF

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Publication number
KR970074655A
KR970074655A KR1019960019777A KR19960019777A KR970074655A KR 970074655 A KR970074655 A KR 970074655A KR 1019960019777 A KR1019960019777 A KR 1019960019777A KR 19960019777 A KR19960019777 A KR 19960019777A KR 970074655 A KR970074655 A KR 970074655A
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KR
South Korea
Prior art keywords
alumina
kaolin
beta
solid electrolyte
batteries
Prior art date
Application number
KR1019960019777A
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Korean (ko)
Inventor
강효경
Original Assignee
박희찬
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Application filed by 박희찬 filed Critical 박희찬
Priority to KR1019960019777A priority Critical patent/KR970074655A/en
Publication of KR970074655A publication Critical patent/KR970074655A/en

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Abstract

본 발명은 카올린으로부터 건전지용 고체전해질인 베타-알루미나를 제조하는 방법.에 관한 것인데 상기의 베타-알루미나의 제조방법.으로는 출발원료를 단순한 계기적인 혼합을 통해서 행하는 방법.과 졸-겔(Sol-gel)법과 옥살레이트(Oxalte)법 등의 방법.이 있다. 그런데 기계적인 혼합은 불순물의 도입가능성이 높고 원료 조성의 불균질성이 발생하기 쉬우며, 졸-겔( Sol-gel)방법.과 옥살레이트(Oxalte)방법.은 반응조건의 복잡성, 재현성, 원료공급 및 가격면에서 많은 어려운 문제점을 가지고 있다. 이에 본 발명은 대량으로 매장되어 있는 카올린을 산처리하여 경제적인 침전법으로 균일한 입도 분포 및 균일한 조성을 가진 고체전해질인 베타-알루미나의 분말을 제조하는 방법을 제공한다.The present invention relates to a method for producing beta-alumina, a solid electrolyte for batteries from kaolin. The method for preparing beta-alumina, as described above, is a method for performing starting materials through simple instrumental mixing. -gel method and oxalate method. However, mechanical mixing is highly likely to introduce impurities, and heterogeneity of raw material composition is likely to occur, and the sol-gel method and the oxalte method have complex reaction conditions, reproducibility, raw material supply and There are many difficult problems in price. Accordingly, the present invention provides a method for producing a powder of beta-alumina, which is a solid electrolyte having a uniform particle size distribution and a uniform composition, by acid treatment of a large amount of buried kaolin.

Description

카올린으로부터 건전지용 고체전해질인 베타-알루미나를 제조하는 방법.Method for producing beta-alumina, a solid electrolyte for batteries from kaolin.

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명으로 얻은 침전물의 X-선 회절 분석표1 is an X-ray diffraction table of the precipitate obtained by the present invention

Claims (1)

카올린을 700-900℃에서 3시간 정도 하소하고, 하소된 분말을 10-40중량% 황산 용액에 넣은 후, 이를 항온조에서 반응온도를 50-90℃로 하여 1-5시간반응 시킨 다음, 산처리함으로서 얻은 용액에 수산화나트륨(NaOH)을 Na2O: Al2O3mole비로 1: 0. 5내지 1: 5의 범위내로 투입하고, 투입된 수산화나트륨(NaOH)이 완전히 용해될도록 까지 계속하여 교반시키며 이에 따라 완전히 용해된 용액을 침전제인 에탄올(C2H5OH)에 교반하면서 투입한 후 24시간정도숙성하고 여과하여서 베타-알루미나의 분말을 얻을 수 있음을 특징으로 하는 카올린으로부터 건전지용 고체전해질인 베타-알루미나를 제조하는 방법.Kaolin was calcined at 700-900 ° C. for about 3 hours, and the calcined powder was placed in a 10-40 wt% sulfuric acid solution, which was then reacted in a thermostat at 50-90 ° C. for 1-5 hours, followed by acid treatment. Sodium hydroxide (NaOH) was added to the solution obtained in the range of 1: 0.5 to 1: 5 in a ratio of Na 2 O: Al 2 O 3 , and stirring continued until the added sodium hydroxide (NaOH) was completely dissolved. Thus, a fully dissolved solution was added to ethanol (C 2 H 5 OH) as a precipitant while stirring, and then aged for about 24 hours and filtered to obtain a powder of beta-alumina. Process for preparing phosphorous beta-alumina. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960019777A 1996-05-30 1996-05-30 Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin KR970074655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960019777A KR970074655A (en) 1996-05-30 1996-05-30 Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960019777A KR970074655A (en) 1996-05-30 1996-05-30 Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin

Publications (1)

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KR970074655A true KR970074655A (en) 1997-12-10

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KR1019960019777A KR970074655A (en) 1996-05-30 1996-05-30 Method for preparing beta-alumina, a solid electrolyte for batteries from kaolin

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388028B1 (en) * 1998-12-21 2003-09-19 주식회사 포스코 Method for producing high purity gamma alumina from kaolinite
KR100399758B1 (en) * 2000-11-17 2003-09-29 한국에너지기술연구원 The Manufacture Method of Beta - Alumina Solid Electrolyte for Alkali Metal Thermal to Electric Converter
KR100920231B1 (en) * 2007-09-28 2009-10-05 한국전력공사 Extraction method and apparatus of high pure alumina from fly ash using microwave

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388028B1 (en) * 1998-12-21 2003-09-19 주식회사 포스코 Method for producing high purity gamma alumina from kaolinite
KR100399758B1 (en) * 2000-11-17 2003-09-29 한국에너지기술연구원 The Manufacture Method of Beta - Alumina Solid Electrolyte for Alkali Metal Thermal to Electric Converter
KR100920231B1 (en) * 2007-09-28 2009-10-05 한국전력공사 Extraction method and apparatus of high pure alumina from fly ash using microwave

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