Highly effective ammonia removal in a series of Brønsted acidic porous polymers: investigation of chemical and structural variations

Chemical Science
Gokhan BarinJeffrey R Long

Abstract

Although a widely used and important industrial gas, ammonia (NH3) is also highly toxic and presents a substantial health and environmental hazard. The development of new materials for the effective capture and removal of ammonia is thus of significant interest. The capture of ammonia at ppm-level concentrations relies on strong interactions between the adsorbent and the gas, as demonstrated in a number of zeolites and metal-organic frameworks with Lewis acidic open metal sites. However, these adsorbents typically exhibit diminished capacity for ammonia in the presence of moisture due to competitive adsorption of water and/or reduced structural stability. In an effort to overcome these challenges, we are investigating the performance of porous polymers functionalized with Brønsted acidic groups, which should possess inherent structural stability and enhanced reactivity towards ammonia in the presence of moisture. Herein, we report the syntheses of six different Brønsted acidic porous polymers exhibiting -NH3Cl, -CO2H, -SO3H, and -PO3H2 groups and featuring two different network structures with respect to interpenetration. We further report the low- and high-pressure NH3 uptake in these materials, as determined under dry and hum...Continue Reading

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Citations

Nov 11, 2017·Angewandte Chemie·Weiyi ZhangJiayin Yuan
Sep 25, 2020·Angewandte Chemie·Dae Won KimChang Seop Hong
Feb 17, 2021·ACS Applied Materials & Interfaces·Dahee JungOmar K Farha
Dec 22, 2020·Advanced Science·Dong Won KangChang Seop Hong
Mar 7, 2021·Journal of the American Chemical Society·Naneki C McCallumNathan C Gianneschi
Apr 23, 2021·Journal of the American Chemical Society·Christopher MarshMartin Schröder
Feb 10, 2018·Journal of the American Chemical Society·Adam J Rieth, Mircea Dincă
Dec 17, 2020·ACS Applied Materials & Interfaces·Rodrigo J S LimaHeloisa N Bordallo
Jul 6, 2018·ACS Central Science·Adam J Rieth, Mircea Dincă
Mar 25, 2020·Chemical Reviews·Timur IslamogluOmar K Farha
May 19, 2020·ACS Sustainable Chemistry & Engineering·Leilah KrounbiJohannes Lehmann
Nov 3, 2021·ChemSusChem·Venkata Swaroopa Datta DevulapalliEric Borguet
Jan 5, 2022·Chemical Communications : Chem Comm·Xiaoxin TianJianji Wang

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Methods Mentioned

BETA
infrared spectroscopy

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