KR20110031880A - 탄산세륨계 화합물의 제조 방법, 산화세륨의 제조 방법 및 결정성 산화세륨 - Google Patents
탄산세륨계 화합물의 제조 방법, 산화세륨의 제조 방법 및 결정성 산화세륨 Download PDFInfo
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Abstract
상기 탄산세륨계 화합물의 제조 방법은 승온 하에서, 란타나이트 세륨을 반응시켜, 사방정계 세륨 옥시카보네이트 하이드레이트(Ce2O(CO3)2·H2O) 또는 육방정계 세륨 하이드록시 카보네이트(Ce(OH)·(CO3))를 포함한 탄산세륨계 화합물을 형성하는 단계를 포함한다.
Description
도 13은 실시예 1 내지 12에서 얻은 탄산세륨 전구체의 XRD 분석 결과이다.
도 14 내지 16는 실시예 23, 16 및 비교예 2에서 얻은 산화세륨의 전자 현미경 사진(SEM 사진)이다.
도 17은 실시예에서 얻은 산화세륨 분말의 XRD 분석 결과이다.
원료량 | 증류수량 | 반응온도 | 반응시간 | 결정구조(부피비) | |
실시예1 | 1 | 5 | 100℃ | 12hr | 사방정계(100부피%) |
실시예2 | 3 | 5 | 100℃ | 12hr | 사방정계(100부피%) |
실시예3 | 1 | 5 | 150℃ | 6hr | 육방정계(100부피%) |
실시예4 | 1 | 5 | 180℃ | 6hr | 육방정계(100부피%) |
실시예5 | 1 | 5 | 230℃ | 2hr | 육방정계(100부피%) |
실시예6 | 1 | 5 | 250℃ | 4hr | 육방정계(100부피%) |
실시예7 | 2 | 5 | 180℃ | 6hr | 육방정계(100부피%) |
실시예8 | 3 | 5 | 180℃ | 6hr | 육방정계(100부피%) |
실시예9 | 5 | 5 | 180℃ | 6hr | 육방정계(100부피%) |
실시예10 | 4 | 5 | 80℃ | 15hr | 사방정계(100부피%) |
실시예11 | 4 | 5 | 150℃ | 30min | 육방정계(100부피%) |
실시예12 | 4 | 5 | 130℃ | 3hr | 사방정계/육방정계(부피비 = 1/2) |
탄산세륨 종류(실시예 번호) | 투입량 | 소성온도 | 결정크기 | 결정립크기 | |
실시예13 | 사방정계(실시예 1) | 7kg/hr | 800℃ | 51nm | 약 60~80nm |
실시예14 | 사방정계(실시예 1) | 7kg/hr | 825℃ | 53nm | 약 55~75nm |
실시예15 | 사방정계(실시예 1) | 7kg/hr | 850℃ | 64nm | 약 65~90nm |
실시예16 | 사방정계(실시예 1) | 7kg/hr | 900℃ | 70nm | 약 70~100nm |
실시예17 | 사방정계(실시예 1) | 7kg/hr | 925℃ | 75nm | 약 80~125nm |
실시예18 | 사방정계(실시예 2) | 7kg/hr | 850℃ | 58nm | 약 100~130nm |
실시예19 | 사방정계(실시예 2) | 5kg/hr | 850℃ | 61nm | 약 65~80nm |
실시예20 | 육방정계(실시예 3) | 7kg/hr | 900℃ | 50nm | 약 100~140nm |
실시예21 | 육방정계(실시예 3) | 7kg/hr | 850℃ | 47nm | 약 90~130nm |
실시예22 | 육방정계(실시예 3) | 7kg/hr | 800℃ | 42nm | 약 65~100nm |
실시예23 | 육방정계(실시예 4) | 7kg/hr | 900℃ | 48nm | 약 180~200nm |
산화세륨(실시예 번호) | 평균 입경 | 연마결과 | |
실시예25 | 실시예14 | 86nm | 4594Å/min |
실시예26 | 실시예15 | 86nm | 4772Å/min |
실시예27 | 실시예16 | 86nm | 4710Å/min |
실시예28 | 실시예17 | 86nm | 4965Å/min |
비교예3 | 란타나이트 세륨으로부터 바로 제조된 산화세륨 | 86nm | 4330Å/min |
Claims (21)
- 50℃ 이상의 온도에서 란타나이트 세륨을 반응시켜, 사방정계 세륨 옥시카보네이트 하이드레이트(Ce2O(CO3)2·H2O), 육방정계 세륨 하이드록시 카보네이트(Ce(OH)·(CO3)) 또는 이들의 혼합물을 포함한 탄산세륨계 화합물을 형성하는 단계를 포함하는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 액상 매질 내에서 진행되는 탄산세륨계 화합물의 제조 방법.
- 제 2 항에 있어서, 상기 액상 매질은 물, 에탄올, 메탄올, 디메틸포름아미드(DMF) 및 디메틸술폭사이드(DMSO)로 이루어진 그룹에서 선택된 1종 이상의 용매를 포함하는 탄산세륨계 화합물의 제조 방법.
- 제 3 항에 있어서, 수용매에 분산된 란타나이트 세륨을 반응시키는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 50 ~ 300℃의 온도 하에 진행되는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 상압 내지 100bar의 압력 하에 개시되는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 0.5~100 시간 동안 진행되는 탄산세륨계 화합물의 제조 방법.
- 제 2 항에 있어서, 상기 란타나이트 세륨의 반응은 란타나이트 세륨 : 액상 매질의 중량비가 1 : 0.5 ~ 1 : 20로 되는 양의 액상 매질 내에서 진행되는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 50~130℃의 온도 하에 진행되며, 사방정계 세륨 옥시카보네이트 하이드레이트(Ce2O(CO3)2·H2O)를 포함한 탄산세륨계 화합물을 형성하는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 110~300℃의 온도 하에 진행되며, 육방정계 세륨 하이드록시 카보네이트(Ce(OH)·(CO3))를 포함한 탄산세륨계 화합물을 형성하는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 50℃ 이상 110℃ 미만의 온도 하에 진행되며, 50 부피% 이상의 사방정계 세륨 옥시카보네이트 하이드레이트(Ce2O(CO3)2·H2O)를 포함한 탄산세륨계 화합물을 형성하는 탄산세륨계 화합물의 제조 방법.
- 제 1 항에 있어서, 상기 란타나이트 세륨의 반응은 130℃ 초과 300℃ 이하의 온도 하에 진행되며, 50 부피% 이상의 육방정계 세륨 하이드록시 카보네이트(Ce(OH)·(CO3))를 포함한 탄산세륨계 화합물을 형성하는 탄산세륨계 화합물의 제조 방법.
- 제 1 항 내지 제 12 항 중 어느 한 항에 기재된 방법으로 얻어지는 탄산세륨계 화합물.
- 제 13 항에 있어서, 사방정계 세륨 옥시카보네이트 하이드레이트(Ce2O(CO3)2·H2O) 또는 육방정계 세륨 하이드록시 카보네이트(Ce(OH)·(CO3))가 50 부피% 이상으로 포함된 탄산세륨계 화합물.
- 제 1 항 내지 제 12 항 중 어느 한 항의 방법으로 탄산세륨계 화합물을 제조하는 단계; 및 상기 탄산세륨계 화합물을 소성하는 단계를 포함하는 산화세륨의 제조 방법.
- 제 15 항에 있어서, 상기 소성 단계는 300 내지 1500℃에서 진행되는 산화세륨의 제조 방법.
- 복수의 산화세륨 입자를 포함하고,
각각의 산화세륨 입자 상에는 복수의 결정립(crystal grain)을 정의하는 경계(boundary)가 형성되어 있으며,
각각의 결정립은 하나 이상의 산화세륨 결정을 포함하는 결정성 산화세륨.
- 제 17 항에 있어서, 상기 결정립은 20 내지 300nm의 크기를 가지며, 상기 산화세륨 결정은 10 내지 300nm의 결정 크기를 갖는 결정성 산화세륨.
- 제 17 항에 있어서, 수용매에 분산된 상태에서 0.5~5㎛의 부피 평균 입경을 갖는 결정성 산화세륨.
- 제 17 항 내지 제 19 항 중 어느 한 항에 의한 결정성 산화세륨의 분말을 연마재로 포함하는 CMP용 슬러리.
- 제 20 항에 있어서, 수용매에 분산된 연마재 및 고분자 분산제를 포함하는 CMP용 슬러리.
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JP2012529652A JP5449561B2 (ja) | 2009-09-21 | 2010-08-18 | 炭酸セリウム系化合物の製造方法、酸化セリウムの製造方法及び結晶性酸化セリウム |
PCT/KR2010/005459 WO2011034287A2 (ko) | 2009-09-21 | 2010-08-18 | 탄산세륨계 화합물의 제조 방법, 산화세륨의 제조 방법 및 결정성 산화세륨 |
EP10817356.8A EP2481709B1 (en) | 2009-09-21 | 2010-08-18 | Method for preparing a cerium carbonate compound and method for preparing cerium oxide |
CN201080042134.XA CN102596810B (zh) | 2009-09-21 | 2010-08-18 | 碳酸铈类化合物的制备方法和氧化铈的制备方法 |
TW099131642A TWI450864B (zh) | 2009-09-21 | 2010-09-17 | 碳酸鈰之製法、氧化鈰與晶質氧化鈰之製法 |
US12/886,821 US20110067315A1 (en) | 2009-09-21 | 2010-09-21 | Method for preparing cerium carbonate, method for cerium oxide prepared and crystalline cerium oxide |
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US9233863B2 (en) | 2011-04-13 | 2016-01-12 | Molycorp Minerals, Llc | Rare earth removal of hydrated and hydroxyl species |
CN102796493A (zh) * | 2012-08-24 | 2012-11-28 | 内蒙古大学 | 一种球形单分散高铈抛光粉及其制备方法 |
EP3110549B1 (en) * | 2014-02-26 | 2023-07-05 | The University of British Columbia | Methods of preparing metal / metal oxide materials from nanostructured substrates and uses thereof |
CN106457073A (zh) | 2014-03-07 | 2017-02-22 | 安全自然资源有限公司 | 具有杰出的砷去除性质的氧化铈(iv) |
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CN115605435B (zh) * | 2020-03-20 | 2025-02-07 | 加利福尼亚大学董事会 | 碳酸铈(iii)颗粒的水性分散体 |
CN112094646B (zh) * | 2020-10-30 | 2022-08-26 | 淮北师范大学 | 一种白光荧光粉及其制备方法 |
CN112875741B (zh) * | 2021-01-28 | 2022-08-12 | 浙江师范大学 | 一种宽带水合碳酸氧铈微波吸收剂及其制备工艺与应用 |
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FR2741869B1 (fr) * | 1995-12-04 | 1998-02-06 | Rhone Poulenc Chimie | Oxyde de cerium a pores de structure lamellaire, procede de preparation et utilisation en catalyse |
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TWI450864B (zh) | 2014-09-01 |
EP2481709A4 (en) | 2015-09-16 |
US20110067315A1 (en) | 2011-03-24 |
CN102596810A (zh) | 2012-07-18 |
WO2011034287A3 (ko) | 2011-07-21 |
KR101050789B1 (ko) | 2011-07-20 |
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