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Titolo:
THE CREATION OF ACID CARBON SURFACES BY TREATMENT WITH (NH4)(2)S2O8
Autore:
MORENOCASTILLA C; CARRASCOMARIN F; MUEDEN A;
Indirizzi:
UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN,GRP INVEST CARBONES E-18071 GRANADA SPAIN
Titolo Testata:
Carbon
fascicolo: 10-11, volume: 35, anno: 1997,
pagine: 1619 - 1626
SICI:
0008-6223(1997)35:10-11<1619:TCOACS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACTIVATED CARBONS; PORE TEXTURE; NITRIC-ACID; ADSORPTION; AIR; ADSORBENTS; COMPLEXES; CHEMISTRY; OXIDATION; COAL;
Keywords:
ACTIVATED CARBON; CHEMICAL TREATMENT; OXIDATION; FUNCTIONAL GROUPS; SURFACE PROPERTIES;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
C. Morenocastilla et al., "THE CREATION OF ACID CARBON SURFACES BY TREATMENT WITH (NH4)(2)S2O8", Carbon, 35(10-11), 1997, pp. 1619-1626

Abstract

Two activated carbons with different degree of activation, 20 and 46%burn-off, were obtained from olive stones by steam activation. These samples were oxidized with a concentrated solution of (NH4)(2)S2O8 fordifferent periods of time, up to a maximum of 24 hours, studying the variation in surface area, pore texture and surface chemistry during the oxidation process. The surface area and porosity was studied by N-2and CO2 adsorption, mercury porosimetry, and helium and mercury densities. The surface complexes were characterized by temperature programmed desorption and FTIR techniques, selective neutralization, and mass titration. Detailed studies are made of the kinetics of the formation of CO and CO2-evolving groups and of their nature and structure. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/10/20 alle ore 05:00:34