[發明專利]一種鈦酸鋰粉末的制備方法無效
| 申請號: | 201010503891.4 | 申請日: | 2010-10-12 |
| 公開(公告)號: | CN101948134A | 公開(公告)日: | 2011-01-19 |
| 發明(設計)人: | 李運姣;趙中偉;陳愛良;霍廣生;劉旭恒 | 申請(專利權)人: | 中南大學 |
| 主分類號: | C01G23/00 | 分類號: | C01G23/00 |
| 代理公司: | 長沙市融智專利事務所 43114 | 代理人: | 鄧建輝 |
| 地址: | 410083 湖南*** | 國省代碼: | 湖南;43 |
| 權利要求書: | 查看更多 | 說明書: | 查看更多 |
| 摘要: | |||
| 搜索關鍵詞: | 一種 鈦酸鋰 粉末 制備 方法 | ||
技術領域
本發明涉及一種鈦酸鋰粉末的制備方法。
背景技術
鈦酸鋰(Li2TiO3)具有優異的化學穩定性和與結構材料良好的相容性,以及良好的氚低溫釋放性能,被公認為是一種綜合性能優良的最有前途的聚變堆用固體氚增殖材料(參見Ceramic?breederresearch?and?development:Progress?and?focus.Journal?ofNuclear?Materials,2000,283-287,99-109、New?synthesis?methodof?advanced?lithium?titanate?with?Li4TiO4?additives?for?ITER-TBM.Fusion?Engineering?and?Design.2009,84(2-6),956-959、Preparation?of?spherical?particles?of?Li2TiO3(with?diametersbelow?100μm)by?sol-gel?process.Fusion?Engineering?and?Design,2009,84(2-6),681-684、A?polymer?solution?technique?for?thesynthesis?of?nano-sized?Li2TiO3?ceramic?breeder?powders.Journal?of?Nuclear?Materials,2008,373(1-3),194-98、Sol-gelsynthesis?and?sintering?of?nano-size?Li2TiO3?powder.MaterialsLetters,2008,62(6-7),837-839.)。其研究與開發對促進我國核能技術和清潔能源工業的可持續性發展具有重要意義。
固態氚增殖劑鈦酸鋰(Li2TiO3)的制備通常由兩個過程組成:粉末的制備和粉末的成型與燒結。目前,國內外Li2TiO3的制備還處于研究和開發階段,我國Li2TiO3制備基本處于起步階段,僅個別研究者報道過Li2TiO3小球制備工藝方面的研究(參見Sol-gel?synthesis?andsintering?of?nano-size?Li2TiO3?powder.Materials?Letters,2008,62(6-7),837-839、Fabrication?of?Li2TiO3?pebbles?by?water-basedsol-gel?method.Fusion?Engineering?and?Design,2008,83(1),112-116、Optimization?of?a?wet?chemistry?method?for?fabricationof?Li2TiO3?pebbles.Journal?of?Nuclear?Materials,2008,373(1-3),206-211.)。歐洲和日本在氚增殖材料方面已經完成了Li4SiO4和Li2TiO3小球制備工藝的半工業化(參見聚變堆用氚固體增殖材料的研究進展。第三屆反應堆物理與核材料學術研討會論文摘要集,中國北京,2007),但還未見有工業報道。迄今為止,文獻報道的Li2TiO3粉末的制備方法主要有固相法和液相法(如溶膠-凝膠法、溶液燃燒法等)。固相法多以Li2CO3或LiOH·2H2O為鋰源,以商品TiO2為鈦源,按比例混合后經500-700℃煅燒約20h合成Li2TiO3粉末(參見Newsynthesis?method?of?advanced?lithium?titanate?with?Li4TiO4additives?for?ITER-TBM,Fusion?Engineering?and?Design.2009,84(2-6),956-959、Fabrication?of?Li2TiO3?pebbles?by?theextrusion-spheronisation-sintering?process.Journal?ofNuclear?Materials?2002,307-311,803-806、Electricalconductivity?of?Li2TiO3?ceramics.Solid?State?Ionics,2007,178,35-41、Behaviour?of?Li2ZrO3?and?Li2TiO3?pebblesrelevant?to?theirutilization?as?ceramic?breeder?for?the?HCPB?blanket.Journalof?Nuclear?Materials?2000,283-287,1361-1365.),所得粉末壓制成型后在1000-1200℃下燒結5-20h獲得Li2TiO3小球。雖然固相法合成粉末流程較短,但后續燒結過程所需溫度高,燒結時間長,能耗高;且產品性能不夠理想。相對而言,以溶膠-凝膠法(參見Preparationof?spherical?particles?of?Li2TiO3(with?diameters?below?100μm)by?sol-gel?process.Fusion?Engineering?and?Design,2009,84(2-6),681-684、Sol-gel?synthesis?and?sintering?of?nano-sizeLi2TiO3?powder.Materials?Letters,2008,62(6-7),837-839、Fabrication?of?Li2TiO3?pebbles?by?water-based?sol-gel?method.Fusion?Engineering?and?Design,2008,83(1),112-116、Optimization?of?a?wet?chemistry?method?for?fabrication?ofLi2TiO3?pebbles.Journal?of?Nucle?ar?Materials,2008,373(1-3),206-211、Lithium?titanate?pebbles?reprocessing?by?wet?chemistry.Journal?of?Nuclear?Materials,2001,289,303-307、Developmentof?wet?process?with?substitution?reaction?for?the?massproduction?of?Li2TiO3?pebbles.Journal?of?Nuclear?Materials,2000,283-287,1380-1384.)和溶液燃燒法[參見Synthesis?of?Li2MO3(M=Ti?or?Zr)by?the?combustion?method.Solid?State?Sciences.2006,8,470-475、Characterizations?of?Li2TiO3?prepared?by?asolution?combustion?synthesis?and?fabrication?of?sphericalparticles?by?dry-rolling?granulation?process.FusionEngineering?and?Design?2006,81,1039-1044、Sinteringcharacterization?of?Li2TiO3?ceramic?breeder?powders?prepared?bythe?solution?combustion?synthesis?process.Journal?of?NuclearMaterials?2005,341,148-152]為代表的濕化學法以其產品性能優良等獨特優勢頗受國內外研究者的關注。
該專利技術資料僅供研究查看技術是否侵權等信息,商用須獲得專利權人授權。該專利全部權利屬于中南大學,未經中南大學許可,擅自商用是侵權行為。如果您想購買此專利、獲得商業授權和技術合作,請聯系【客服】
本文鏈接:http://www.szxzyx.cn/pat/books/201010503891.4/2.html,轉載請聲明來源鉆瓜專利網。





