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“超高纯稀土氧化物的制备和分析研究”是中国科学院“八五”重大科研项目的研究课题之一,经过二年多的努力,已由长春应用化学研究所完成了16种纯度>99.9999%稀土氧化物的制备工艺,于1995年6月15日由中科院应用研究与发展局在长春主持召开了成果鉴定会.会议邀请了国内稀土界主要的科研、设计、开发、生产和高校的著名专家和教授组成鉴定委员会,与会专家对该成果进行了认真的讨论,并给予充分的肯定和恰如其份的评价.专家们一致认为,该项成果应用多种现代分离技术同时研制成功16种纯度为99.9999~99.99999%超高纯稀土氧化物,这在国际上还是首次.其中首次采用环烷酸分馏萃取等工艺获得纯度为
“Preparation and Analysis of Ultra-high Purity Rare Earth Oxides” is one of the research topics of the “August 5” major scientific research project of Chinese Academy of Sciences. After more than two years of hard work, 16 kinds of purity> 99.9999 have been completed by Changchun Institute of Applied Chemistry % Rare earth oxide preparation process, in June 15, 1995 by the Chinese Academy of Sciences Institute of Applied Research and Development held in Changchun fruit appraisal meeting was held in the meeting invited the main rare earth research, design, development, production and the famous university Experts and professors formed an appraisal committee, the experts discussed the outcome of a serious discussion, and give full affirmation and appropriate assessment.Experts agreed that the results of the application of a variety of modern separation technology developed at the same time the success of 16 kinds of purity 99.9999 ~ 99.99999% of ultra-high purity rare earth oxides, which is the first time in the world. One of the first naphthenic acid fractionation extraction process to obtain the purity of