化工学报2025，Vol.76Issue(5)：2327-2336,10.DOI:10.11949/0438-1157.20241223
MIL-101(Cr)批量化生产中的絮凝工艺研究
Study on flocculation techniques in the large-scale production of MIL-101(Cr)
摘要
Abstract
In recent years,metal-organic frameworks(MOF)have garnered significant attention due to their large specific surface area,highly tunable pore sizes,and diverse functionalities.These characteristics render MOF promising materials for applications in gas adsorption and separation,catalysis,and sensing.However,the majority of MOF materials remain confined to small-scale synthesis in laboratories.The large-scale production of MOF faces numerous challenges,including stringent synthesis conditions,low yields,and difficult post-processing,limiting their widespread application.Among the various MOF materials,MIL-101(Cr)has gained particular favor from researchers due to its exceptional thermal stability,chemical stability,and ultra-high porosity and specific surface area.MIL-101(Cr)can be synthesized via a simple hydrothermal method using relatively low-cost terephthalic acid and chromium salts,demonstrating significant potential for industrial applications.Nevertheless,in the conventional hydrothermal synthesis process,the small particle size of MIL-101(Cr)leads to difficulties in sedimentation and requires multiple washing steps,which limit the production efficiency.To address this issue,we introduced a flocculant and optimized the flocculation process by adjusting the types and amounts of flocculant used,thereby reducing filtration time and improving production efficiency.Importantly,after adding flocculants,the thermal stability of MIL-101(Cr)was maintained,the BET specific surface area reached 3211 m²/g,and the carbon dioxide adsorption reached 40 cm³/g,and the performance was well maintained.关键词
金属有机骨架材料/绿色规模化生产/絮凝剂/快速沉降/提升效率Key words
metal-organic frameworks/green scaled production/flocculating agent/rapid sedimentation/improved efficiency分类
化学化工引用本文复制引用
宁丹东,李建惠,陈杨,李晋平,李立博..MIL-101(Cr)批量化生产中的絮凝工艺研究[J].化工学报,2025,76(5):2327-2336,10.基金项目
国家重点研发计划项目(2022YFB3806800) （2022YFB3806800）
国家自然科学基金项目(22278287,22278288,22090062) （22278287,22278288,22090062）
