4A分子筛吸脱水特性研究  

Characteristic Study on Water Absorption and Dehydration of 4A Molecular Sieve

作　　者：王洪亮[1,2] 张震 张勇平 胡宏杰[1,2] 刘红召[1,2] 王威 Wang Hongliang;Zhang Zhen;Zhang Yongping;Hu Hongjie;Liu Hongzhao;Wang Wei(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,China National Engineering Research Center for Utilization of Industrial Minerals,Key Laboratory for Polymetallic Ores'Evaluation and Utilization,MNR,Engineering Technology Innovation Center for Development and Utilization of High Purity Quartz,Key Laboratory of Comprehensive Utilization of Gold Resource in Henan Province,Zhengzhou,Henan,China;Northwest China Center for Geosience Innovation,Xi’an,Shaanxi,China;China Astronaut Research and Training Center,Beijing,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,国家非金属矿资源综合利用工程技术研究中心,自然资源部多金属矿综合利用评价重点实验室,自然资源部高纯石英资源开发利用工程技术创新中心,河南省黄金资源综合利用重点实验室,河南郑州450006 [2]西北地质科技创新中心,陕西西安710054 [3]中国航天员科研训练中心,北京100094

出　　处：《矿产综合利用》2023年第3期161-164,180,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家重点研发计划项目(2022YFC2904804)。

摘　　要：这是一篇陶瓷复合材料领域的论文。为了解4A分子筛在吸水脱水过程中水含量分布特征,采用高温脱水与低温吸水计算方法,探讨了不同脱附温度与气氛下4A分子筛水含量分布,结果表明,脱附温度为200~230℃时,在非真空气氛脱附时,有效残留水含量为4%~5%,有效脱附水含量达到了24%~25%,吸水率为83%~87%;在真空气氛下脱附时,有效残留水含量为1%~2%,有效脱附水含量达到了27%~28%,吸水率为93%~97%。为了使有效残留水含量低于2%,较佳脱附再生条件为真空气氛、脱附温度不低于200℃。采用差热失重法可以估算分子筛在非真空气氛下的有效脱水含量与有效残余水含量。真空脱附后样品吸水速率大于非真空脱附的吸水速率。This is a paper in the field of ceramics and composites.In order to understand the water content distribution characteristics of 4A molecular sieve in the process of water absorption and dehydration,the calculation methods of high temperature dehydration and low temperature water absorption were used to discuss the water content distribution of 4A molecular sieve under different desorption temperature and atmosphere.The results showed that when the desorption temperature was 200~230℃,the effective residual water was 4%~5%,the effective desorption water was 24%~25%and the water absorption was 83%~87%in the non vacuum air desorption under vacuum,the effective residual water was 1%~2%,the effective desorption water was 27%~28%,and the water absorption is 93%~97%.In order to make the effective residual water content less than 2%,the best desorption regeneration conditions are vacuum atmosphere and desorption temperature not less than 200℃.The effective dewater and residual water of molecular sieve in non vacuum atmosphere can be estimated by differential thermal analysis.The water absorption rate of the sample after vacuum desorption is higher than that of the sample without vacuum desorption.

关 键 词：4A分子筛 陶瓷及复合材料 真空脱附 有效吸附水 有效残留水 有效脱附水 

分 类 号：TD989[矿业工程—选矿] TQ028.15[化学工程]