Preparation of Terbium Sesquisulfide and Holmium Sesquisulfide by Suffurization of Their Oxide Powders Using CS2 Gas
Preparation of Terbium Sesquisulfide and Holmium Sesquisulfide by Suffurization of Their Oxide Powders Using CS2 Gas
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CS2气体硫化三硫化二铽和三硫化钬氧化物粉末制备
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
KazuyoshiShimakage
中科院分区：
文献类型：
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作者：
YuanHaibin;MichihiroOhta;ShinjiHirai;ToshiyukiNishimura;KazuyoshiShimakage
研究了在673 ~ 1323 K温度范围内，用CS2气体对氧化粉末进行硫化合成的倍半硫化铽（Zb2S3）和倍半硫化钬（Ho2S3）的生成行为。在Tb4O7粉末的硫化过程中，反应初期生成Tb2O3和Zb2OES，在较高温度下最终生成α-Tb2S3。在1323 K下，长时间硫化8 h，可合成单相α-Tb2S3。在用CS2气体硫化Ho2O3粉末的过程中，只形成Ho2O2S作为中间产物。在873 K以上的硫化温度下，反应初期生成Ho2O2S， 1323 K下反应8 h生成单相δ-Ho2S3代替Ho2O2S。此外，还研究了炭黑的加入对Ho2O3粉末在CS2气体中硫化的影响，结果表明炭黑的加入略微加速了反应。
The formation behaviors of terbium sesquisulfide( Zb2S3 )and holmium sesquisulfide( Ho2S3 )synthesized via the sulfurization of their oxide powders using CS2 gas in the range of temperature 673 to 1323 K were investigated. In the sulfurization of Tb4O7 powder, Tb2O3 and Zb2OES were formed in the initial stage of reaction, and α-Tb2S3 was finally formed at higher temperature. For long sulfurization time of 8 h, single-phase α-Tb2S3 could be synthesized at 1323 K. In the sulfurization of Ho2O3 powder using CS2 gas, only Ho2O2S was formed as an intermediate product. At a sulfurization temperature above 873 K, Ho2O2 S was formed in the initial stage of reaction, and single-phase δ-Ho2S3 was formed at 1323 K for 8 h instead of Ho2O2S. Furthermore, the influence of the addition of carbon black to the sulfurization of Ho2O3 powder using CS2 gas was investigated, and the result implied that the reactions were accelerated slightly by the addition of carbon black.