液相法制备稀土氧化物研究现状

由于稀土材料的优异性能和不可替代性，越来越多的稀土材料被应用到现代社会各个领域。虽然我国稀土资源的储量大、种类丰富，使我国在稀土领域的研究应用具有得天独厚的优势，但是在稀土资源开发利用过程中存在着稀土开采技术低、低端产品过剩、高端产品不足等问题制约着国家科技的发展。稀土氧化物的生产及应用已经成为当今稀土资源研究应用的一个热点。由于液相法制备稀土氧化物具有合成温度低、生产成本低以及可以精确控制产物组成的优势被广泛应用到稀土氧化物的制备。本文综述了液相法制备稀土氧化物的工艺方法，对液相法制备产物的形貌、粒度等特性和工艺的优缺点进行了阐述分析，对稀土氧化物制备工艺未来的发展趋势进行了展望。 

Research status of preparation of rare earth oxides by liquid phase method

More and more rare earth materials have been applied to various fields of modern society due to their excellent performance and irreplaceability. Since China's rare earth resources are large in reserves and rich in types, it has unique advantages in their research and application. However, in their development and utilization, there are also problems such as low rare earth mining technology, surplus of low-end products, and insufficient high-end products, which restrict the progress and development of national science and technology. The production and application of rare earth oxides have become a hot issue in the research and application of rare earth resources. These oxides prepared by liquid-phase method have the advantages low synthesis temperature, low production cost and accurate control of product composition so that they have been widely used in their preparations. This article reviewed the process of preparing rare earth oxides by liquid phase method, and analyzed the characteristics of morphology, particle size of the products prepared by the method, and advantages and disadvantages of the process. The future development trend in rare earth oxide preparation process was prospected.