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Titolo:
Dendrimer liquid membranes: CO2 separation from gas mixtures
Autore:
Kovvali, AS; Sirkar, KK;
Indirizzi:
New Jersey Inst Technol, Dept Chem Engn Chem & Environm Sci, Newark, NJ 07102 USA New Jersey Inst Technol Newark NJ USA 07102 onm Sci, Newark, NJ 07102 USA
Titolo Testata:
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
fascicolo: 11, volume: 40, anno: 2001,
pagine: 2502 - 2511
SICI:
0888-5885(20010530)40:11<2502:DLMCSF>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-EXCHANGE MEMBRANES; FACILITATED TRANSPORT; CARBON-DIOXIDE; GLYCEROL MEMBRANES; AQUEOUS-SOLUTIONS; CO2-N-2 MIXTURES; TERTIARY-AMINES; PERMEATION; PREDICTION; SOLUBILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Sirkar, KK New Jersey Inst Technol, Dept Chem Engn Chem & Environm Sci, Newark, NJ 07102 USA New Jersey Inst Technol Newark NJ USA 07102 wark, NJ 07102 USA
Citazione:
A.S. Kovvali e K.K. Sirkar, "Dendrimer liquid membranes: CO2 separation from gas mixtures", IND ENG RES, 40(11), 2001, pp. 2502-2511

Abstract

A generation 0 poly(amidoamine) (PAMAM), dendrimer in the immobilized liquid membrane (ILM) configuration was studied using flat films and hollow fibers for CO2-N-2 separation. This dendrimer as a pure liquid functions as a CO2-selective molecular gate with highly humidified feed gas (Kovvali et al. J, Aml Chem. Sec. 2000, 122, 7594). The present work broadens:the range of relative humidity of the feed gas stream (RHf) by adding a small amount of glycerol to the pure dendrimer liquid. A 75% dendrimer-25% glycerol ILM was found to increase-the operating range of RHf substantially while maintaining the CO2 permeance and the selectivity (alpha (CO2/N2)) close to the levels observed with a pure dendrimer ILM. The performances of pure and 75% dendrimer ILMs were found to be superior or comparable to the highest reported alpha (CO2/N2); This behavior is explained in ter;lis of the charged environment in the dendrimer liquid membrane under humidified feed conditions and facilitated transport Of CO2.

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Documento generato il 11/07/20 alle ore 17:43:06