Triazine-Based Microporous Polymers for Selective Adsorption of CO2

Autor:	Kwang S. Kim, Muhammad Saleh, Seung Bin Baek, Han Myoung Lee
Rok vydání:	2015
Předmět:	Chemistry Carbazole Inorganic chemistry Microporous material Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy Adsorption Polymerization Selective adsorption Specific surface area Physical and Theoretical Chemistry Selectivity Triazine
Zdroj:	The Journal of Physical Chemistry C. 119:5395-5402
ISSN:	1932-7455 1932-7447
DOI:	10.1021/jp509188h
Popis:	Propeller-shaped triazine was used to synthesize microporous polycarbazole materials through an inexpensive FeCl3-catalyzed reaction using direct oxidative coupling (PCBZ) and extensive cross-linking (PCBZL) polymerization routes. PCBZL has a Brunauer–Emmett–Teller specific surface area of 424 m2 g–1 and shows larger CO2 uptake (64.1 mg g–1 at 273 K, 1 atm). Selective adsorption of CO2 over N2 calculated using the ideal adsorbed solution theory shows that both PCBZ (125) and PCBZL (148) exhibit selectivity at 298 K, which is significantly higher than PCBZ (110) and PCBZL (82) at 273 K. These values of selectivity are among the highest reported for any triazine-based microporous material. By introducing the electron-rich carbazole structure into the nitrogen fertile triazine-based system, the adsorption enthalpy is increased drastically, which in turn contributes to high selective adsorption values. The larger existing binding energy between CO2 and propeller specifies more stable and favorable interaction...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c81bd6c320a5885dbfa7daef43cebfc https://doi.org/10.1021/jp509188h Zobrazit plný text záznamu