Highly Enhanced Selectivity and Easy Regeneration for the Separation of CO2 over N2 on Melamine-Based Microporous Organic Polymers

Autor:	Jin-Gui Wang, Hao Shang, Jing-Xiu Hu, Weidong Zhu, Qiang Xiao, Liang Luo, Yijun Zhong
Rok vydání:	2014
Předmět:	chemistry.chemical_classification Langmuir General Chemical Engineering General Chemistry Polymer Microporous material Industrial and Manufacturing Engineering chemistry.chemical_compound Adsorption chemistry Polymerization Chemical engineering Organic chemistry Selectivity Melamine Porosity
Zdroj:	Industrial & Engineering Chemistry Research. 53:11828-11837
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie501736t
Popis:	Melamine based microporous organic polymers (MBMOPs) have been prepared via a one-pot polymerization using the Schiff base reaction. Various techniques such as FT-IR, Ar adsorption, SEM, TEM, and TG have been used to characterize the textural structure, porosity, and stability of the synthesized MBMOPs. The adsorption isotherms of CO2 and N2 on MBMOPs have been accurately measured at pressures up to 118 kPa and different temperatures. Ascribed to the specific affinity of amine groups for CO2, the robust microporous MBMOPs display excellent CO2 adsorption performance in terms of both capacity, up to 2.8 mmol g–1 at 273 K and 118 kPa, and selectivity over N2. Dual-site Langmuir (DSL) or single-site Langmuir (SSL) model describes well the equilibrium data for the adsorption of CO2 or N2 on MBMOPs, respectively. The binary gas adsorption isotherms predicted by the ideal adsorbed solution theory (IAST) show that the prepared MBMOPs exhibit very high selectivities for CO2 over N2, up to 83.7, for equimolar mixt...
Databáze:	OpenAIRE
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