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Titolo:
THERMAL-DESORPTION OF CHLOROPHENOLS FROM ACTIVATED CARBONS WITH DIFFERENT POROSITY
Autore:
FERROGARCIA MA; JOLY JP; RIVERAUTRILLA J; MORENOCASTILLA C;
Indirizzi:
UNIV LYON 1,INST SCI MAT,APPLICAT CHIM & ENVIRONNEM LAB,ESCIL,BAT 308F-69622 VILLEURBANNE FRANCE UNIV LYON 1,INST SCI MAT,APPLICAT CHIM & ENVIRONNEM LAB,ESCIL F-69622VILLEURBANNE FRANCE UNIV GRANADA,DEPT QUIM INORGAN E-18071 GRANADA SPAIN
Titolo Testata:
Langmuir
fascicolo: 7, volume: 11, anno: 1995,
pagine: 2648 - 2651
SICI:
0743-7463(1995)11:7<2648:TOCFAC>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
REGENERATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Ferrogarcia et al., "THERMAL-DESORPTION OF CHLOROPHENOLS FROM ACTIVATED CARBONS WITH DIFFERENT POROSITY", Langmuir, 11(7), 1995, pp. 2648-2651

Abstract

The thermal behavior of two active carbons both saturated with o- andm-chlorophenols has been studied by differential thermogravimetry (DTG) and by mass spectrometric temperature-programmed desorption (TPD-MS). These two active carbons differed mainly by their surfaces and porosities. The comparison of the results of both techniques showed that the desorption may be divided into three steps, i.e., first, desorptionof physisorbed chlorophenol; second, evolution of oxygen containing light gases; and third polymerization with evolution of hydrogen. Diffusional resistance did not affect our DTG or TPD-MS spectra. The amountof initially adsorbed chlorophenol, the bonding strength of physisorbed chlorophenol initially present on the surface of the carbon, and the transformation of physisorbed chlorophenol into chemisorbed species appeared to play an important role in the thermal degradation of adsorbed chlorophenols. The production of light gases depends on a particular chemical property of the surface of carbon which is likely the amount of involved oxygen groups.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:56:52