快速、绿色机械化学合成UTSA-16(Zn)用于高效碳捕获★

doi:10.6023/A25120420

研究论文

快速、绿色机械化学合成UTSA-16(Zn)用于高效碳捕获^★

王炙韬^a,†, 林雨珂^a,†, 万妍^a, 黄鑫伟^a, 李云斌^a, 吉定豪^b,*, 项生昌^a,*, 张章静^a,*

^a福建师范大学化学与材料学院福州 350117;
^b中国航天员科研训练中心,人因工程全国重点实验室北京 100094

投稿日期:2025-12-25
作者简介:†共同第一作者. ^★框架材料化学专辑
基金资助:
国家杰出青年科学基金 (22425102); 国家自然科学基金 (22271046, 22373015, 22501044, W2431013); 人因工程重点实验室资金 (HFNKL2023WW04)资助

Rapid and Green Mechanochemical Synthesis of UTSA-16(Zn) for High-Performance CO₂ Capture

Wang Zhitao^a,†, Lin Yuke^a,†, Wan Yan^a, Huang Xinwei^a, Li Yunbin^a, Ji Dinghao^b,*, Xiang Shengchang^a,*, Zhang Zhangjing^a,*

^aFujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350117, China;
^bChina Astronaut Research and Training Center, No. 1 Yuanming-yuan West Road, Haidian District, Beijing 100094, China

Received:2025-12-25
Contact: *E-mail: jidh.2008@tsinghua.org.cn; scxiang@fjnu.edu.cn; zzhang@fjnu.edu.cn.
About author:†These authors contributed equally to this work.
Supported by:
National Science Fund for Distinguished Young Scholars of China (Grant No. 22425102), the National Natural Science Foundation of China (Grant No. 22271046, 22373015, 22501044 and W2431013) and the Foundation of National Key Laboratory of Human Factors Engineering (Grant No. HFNKL2023WW04).

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1. Supporting Information-A25120420.pdf(2342KB)

摘要/Abstract

针对金属有机框架(MOFs)在工业化应用中面临的高能耗与大量溶剂浪费这一关键瓶颈,本文报道了一种快速、绿色的机械化学合成策略,成功实现了高效CO₂吸附剂UTSA-16(Zn)的宏量制备。与传统溶剂热法相比,该工艺将合成时间从48小时缩短至6小时,使时空产率提升了48倍,同时减少了约90%的溶剂消耗。研究发现,引入三乙胺作为碱调节剂,对于调控反应体系pH值、抑制缺陷形成及确保产物的高结晶度至关重要。所得材料的结构与水热法样品高度一致（BET比表面积达817m²/g）,并完好保留了其优异的CO₂捕获性能。在296 K下,材料的CO₂吸附量达3.68 mmol/g,对CO₂/N₂混合气表现出388的超高IAST选择性。动态穿透实验进一步证实了该材料在模拟烟气条件下的卓越分离能力与循环稳定性。

关键词: UTSA-16, 金属有机框架, 分离, 机械化学合成, 二氧化碳捕获

Addressing the pressing challenge of high energy consumption and solvent waste in the industrial-scale production of metal-organic frameworks (MOFs), we report a rapid, green, and scalable mechanochemical strategy for the mass preparation of the highly efficient CO₂ adsorbent, UTSA-16(Zn). Unlike conventional solvothermal methods, this protocol using zinc acetate and potassium citrate dramatically shortens the synthesis time from 48 hours to just 6 hours. This achieves a remarkable 48-fold enhancement in space-time yield while reducing solvent consumption by approximately 90%. Crucially, we identify that the in-situ accumulation of acidic byproducts during grinding inhibits framework assembly. Precise pH modulation using 0.2 equivalents of triethylamine (TEA) is essential to buffer the reaction environment, preventing defect formation and ensuring high product crystallinity. The resulting material is structurally isomorphous to its hydrothermally synthesized counterpart, possessing a consistent pore environment with a high BET surface area of 817 m²/g. In terms of performance, the mechanochemically derived UTSA-16(Zn) exhibits exceptional CO₂ uptake (3.68 mmol/g at 296 K and 1 atm) and an ultra-high IAST selectivity of 388 for CO₂/N₂ mixtures, driven by a significant difference in isosteric heat of adsorption. Dynamic breakthrough experiments further validate a robust dynamic capacity of 1.94 mmol/g and stable recyclability under simulated flue gas conditions. This work not only provides a practical manufacturing route for UTSA-16(Zn) but also underscores the pivotal role of pH regulation in the green synthesis of advanced porous materials.

Key words: UTSA-16, MOFs, Separation, Mechanochemical Synthesis, Carbon Dioxide Capture

引用此文

王炙韬, 林雨珂, 万妍, 黄鑫伟, 李云斌, 吉定豪, 项生昌, 张章静. 快速、绿色机械化学合成UTSA-16(Zn)用于高效碳捕获^★[J]. 化学学报, doi: 10.6023/A25120420.

Wang Zhitao, Lin Yuke, Wan Yan, Huang Xinwei, Li Yunbin, Ji Dinghao, Xiang Shengchang, Zhang Zhangjing. Rapid and Green Mechanochemical Synthesis of UTSA-16(Zn) for High-Performance CO₂ Capture[J]. Acta Chimica Sinica, doi: 10.6023/A25120420.

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