火法制备硫化亚锡的反应机理与产物稳定性研究  

Reaction mechanism and product stability of SnS prepared by pyro-synthesis

作　　者：尹天骅 李光强[1,2] 马江华[1,2] 袁文来 YIN Tianhua;LI Guangqiang;MA Jianghua;YUAN Wenlai(State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Huangshi Jinchaoyang Powder Materials Co.,Ltd.,Huangshi 405006,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [3]黄石金朝阳粉末材料有限责任公司,湖北黄石405006

出　　处：《武汉科技大学学报》2024年第1期11-19,共9页Journal of Wuhan University of Science and Technology

基　　金：湖北省教育厅科学研究计划指导项目(B2021010)。

摘　　要：本文结合热力学分析和实验,研究了火法制备SnS时,原料配比、反应条件对产物纯度、稳定性的影响机理。结果表明,当反应温度超过440℃,S和Sn反应较快,主要产物为SnS;当反应温度为440℃,S与Sn配料的初始摩尔比在1.2~1.4之间时,所制SnS呈现层状结构,产物主要成分是SnS,含有少量Sn2S3和极少量Sn;随着原料中S比例增加,产物中SnS含量先增加后减小,在硫锡摩尔比为1.25时达到最高值92.95%,此时Sn2S3含量为5.48%,Sn含量为1.57%;合成产物在微氧气氛中,在约350℃时开始产生Sn(SO4)O2杂质,温度升高到700℃,产物中的Sn(SO4)O2和Sn2S3会先后分解,分解的最终产物为SnS。Through a combination of thermodynamic analysis and experimental work,the influencing mechanism of raw material ratios and reaction conditions on the purity and stability of SnS produced via a pyro-synthesis was explored.The results indicate that when the reaction temperature exceeds 440℃,S and Sn react rapidly,predominantly forming SnS.At a reaction temperature of 440℃and an initial molar ratio of S to Sn ranging from 1.2 to 1.4,the synthesized SnS exhibits a layered structure,and the main component of the product is SnS with a minor presence of Sn 2 S 3 and a trace amount of Sn.As the proportion of S in the raw materials increases,the SnS content in the product first rises and then decreases,reaching a peak of 92.95%at a S to Sn molar ratio of 1.25;at this ratio,the contents of Sn 2 S 3and Sn are 5.48%and 1.57%,respectively.The synthetic product begins to form Sn(SO 4)O 2 impurities in a slightly oxygenated atmosphere at about 350℃.As the temperature rises to 700℃,Sn(SO 4)O 2 and Sn 2S 3in the product decompose sequentially,with SnS being the final decomposition product.

关 键 词：SNS 火法合成 硫锡摩尔比 纯度 产物稳定性 

分 类 号：TQ134.32[化学工程—无机化工]