张立涛^1,2,苏一鑫³,李菊^1,2,李雲^1,2,郭宏飞^1,2,曹吉林^1,2

• 1:河北工业大学 化工学院，天津 300401
• 2:教育部海水资源高效利用化工技术工程研究中心，天津 300401
• 3:中化国际新材料(河北)有限公司，河北 石家庄 050000

摘要(Abstract)：

为实现脱硫石膏的高值化利用,利用微波-超声技术辅助,脱硫石膏在甘油-水体系中以MgCl₂作为晶型控制剂,快速合成α-CaSO₄·0.5H₂O纳米晶须。研究了反应温度和反应时间、超声功率、V(甘油)/V(水)以及MgCl₂添加量对产物的影响,探讨了微波-超声技术对α-CaSO₄·0.5H₂O纳米晶须合成过程的强化机制。实验结果表明,所得到的α-CaSO₄·0.5H₂O纳米晶须直径约为200 nm,长径比约为30。微波-超声可在短时间内溶解大量的脱硫石膏,产生大量晶核,形成更小尺寸的产物。同时,超声的分散作用避免合成的α-CaSO₄·0.5H₂O纳米晶须沿[100]方向的定向聚集。将α-CaSO₄·0.5H₂O纳米晶须用于油水分离,分离效率可达98%。经过油水分离后的固相产物可以重新合成α-CaSO₄·0.5H₂O纳米晶须,实现循环利用。

关键词(KeyWords)： 脱硫石膏;α-CaSO₄·0.5H₂O;纳米晶须;微波-超声;油水分离

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(22478095;22008049);河北省重点研发计划(22374101D);河北省研究生创新资助计划(CXZZSS2023032)。

作者(Author): 张立涛^1,2,苏一鑫³,李菊^1,2,李雲^1,2,郭宏飞^1,2,曹吉林^1,2

DOI: 10.3969/j.issn.1003-9015.2025.00.015

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