为丰富稀土产品,拓展稀土应用领域,以现有稀土产品之一的碳酸钆为原料,通过水热结晶,直接合成水合碳酸钆薄壁纳米管,用粉末X射线衍射、热分析、透射电镜技术表征了样品的结构、形貌和热稳定性.水合碳酸钆纳米管长为数百纳米至1.5μm,管径为50～200 m,在680℃以上分解后可得体心立方晶系的氧化钆纳米管,尺寸和形貌未发生显著变化.该法条件温和,流程短,可作为现有湿法冶金工艺的一个部分,直接生产碳酸钆和氧化钆纳米管,而且克服了立方相氧化物不易可控生长的缺点.%Nanotubes of gadolinium carbonate hydrate were prepared through a simple hydrothermal crystallization method with commercial carbonate as precursor for the purpose of enriching rare earth products and enhancement of their applications. The nanotubes are hundreds nanometers to one and a half micrometers long and 50 ～ 200 nm wide with thin walls. The sample can easily bedecomposed into body - centered cubic oxide crystalline nanotubes with almost no changes of both the size and the morphology at a lower temperature of about 680 ℃.
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