Extremely Stable Sulfuric Acid Covalent Organic Framework for Highly Effective Ammonia Capture  

作　　者：Jinli Li Yun Xiao Feng Shui Mao Yi Zhiyuan Zhang Xiongli Liu Laiyu Zhang Zifeng You Rufeng Yang Shiqi Yang Baiyan Li Xian-He Bu 

机构地区：[1]School of Materials Science and Engineering,National Institute for Advanced Materials,TKL of Metal and Molecule-Based Material Chemistry,Nankai University,Tianjin,300350 China [2]General English Department,College of Foreign Languages,Nankai University,Tianjin,300071 China

出　　处：《Chinese Journal of Chemistry》2022年第20期2445-2450,共6页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21978138 and 22035003);the Funda-mental Research Funds for the Central Universities(Nankai University);the Haihe Laboratory of Sustainable Chemical Trans-formations(No.YYJC202101).

摘　　要：Ammonia(NH_(3))is one of the most important industrial feedstocks in the fields of fertilizers,drugs,explosives,ordnance,commercial cleanings,and so on.However,the features of ammonia such as high toxicity and corrosivity,and difficulty in handling would inevitably increase the risk of environmental damage and the deterioration of natural/public lands.Although sorts of solid adsorbents such as metal oxides,zeolites,organic polymers,activated carbons,and metal organic frameworks have been applied in NH_(3) capture,they still show low uptake capacity,low affinities,and instability.Herein,we developed the first case of a highly stable sulfuric acid covalent organic framework(COF),namely TpBD-(SO_(3)H)_(2),as NH_(3) capturer,in which sulfonic acid sites can strongly interact with NH_(3) molecules,and enhance the performance of NH_(3) sorption.As a result,TpBD-(SO_(3)H)_(2) shows high chemical stability under strong acid and water conditions,an important merit for the potential application in harsh environment.And it also exhibits high ammonia capacity of 11.5 mmol·g^(−1) at 298 K and 1.0 bar,making it one of the best in all chemically stable NH_(3) adsorbents up to date.This work thus develops sulfuric acid COF materials as a new platform for ammonia capture and storage.

关 键 词：AMMONIA Adsorption Ligand design Covalent organic framework(COF) TAUTOMERISM 

分 类 号：O64[理学—物理化学]