Prediction of Adsorption Equilibrium of VOCs onto Hyper-Cross-Linked Polymeric Resin at Environmentally Relevant Temperatures and Concentrations Using Inverse Gas Chromatography
| Autor: | Qiuyi Shi, Lijuan Jia, Jiakai Ma, Chao Long |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chromatography
Gas Polymers Inorganic chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Adsorption medicine Acetone Inverse gas chromatography Environmental Chemistry Organic chemistry Benzene Dichloromethane Temperature General Chemistry Microporous material 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Volume (thermodynamics) Swelling medicine.symptom 0210 nano-technology |
| Zdroj: | Environmental sciencetechnology. 51(1) |
| ISSN: | 1520-5851 |
| Popis: | Hyper-cross-linked polymeric resin (HPR) represents a class of predominantly microporous adsorbents and has good adsorption performance toward VOCs. However, adsorption equilibrium of VOCs onto HPR are limited. In this research, a novel method for predicting adsorption capacities of VOCs on HPR at environmentally relevant temperatures and concentrations using inverse gas chromatography data was proposed. Adsorption equilibrium of six VOCs (n-pentane, n-hexane, dichloromethane, acetone, benzene, 1, 2-dichloroethane) onto HPR in the temperature range of 403–443 K were measured by inverse gas chromatography (IGC). Adsorption capacities at environmentally relevant temperatures (293–328 K) and concentrations (P/Ps = 0.1–0.7) were predicted using Dubinin–Radushkevich (DR) equation based on Polany’s theory. Taking consideration of the swelling properties of HPR, the volume swelling ratio (r) was introduced and r·Vmicro was used instead of Vmicro determined by N2 adsorption data at 77 K as the parameter q0 (limit... |
| Databáze: | OpenAIRE |
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