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Titolo:
ADSORPTION OF SO2 FROM FLOWING AIR BY ALKALINE-OXIDE-CONTAINING ACTIVATED CARBONS
Autore:
ALVAREZMERINO MA; CARRASCOMARIN F; MORENOCASTILLA C;
Indirizzi:
UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN,GRP INVEST CARBONES E-18071 GRANADA SPAIN UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN,GRP INVEST CARBONES E-18071 GRANADA SPAIN
Titolo Testata:
Applied catalysis. B, Environmental
fascicolo: 3-4, volume: 13, anno: 1997,
pagine: 229 - 240
SICI:
0926-3373(1997)13:3-4<229:AOSFFA>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Keywords:
SO2 ADSORPTION; ACTIVATED CARBON; ALKALINE OXIDE;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Alvarezmerino et al., "ADSORPTION OF SO2 FROM FLOWING AIR BY ALKALINE-OXIDE-CONTAINING ACTIVATED CARBONS", Applied catalysis. B, Environmental, 13(3-4), 1997, pp. 229-240

Abstract

Adsorption of SO2 under dynamic conditions from an SO2-air mixture at298 and 573 K on alkaline-oxide-containing activated carbons has beenstudied. The adsorption capacity of these samples at 298 K was, in general, lower than that in the original activated carbons and mainly governed by their microporosity accessible to benzene. However, at 573 K, the alkaline-oxide-containing activated carbons adsorbed a greater amount of SO2 than the original activated carbon, following the order Na greater than or equal to K > Rb. At both adsorption temperatures, part of the SO2 adsorbed formed H2SO4 and Me2SO4, where Me = Na, K or Rb. When the SO2 adsorption was carried out at 573 K, this gas fixed additional oxygen complexes that evolved as CO2 under heating up to 873 Kin He flow, probably by reaction of SO2 with carbon surface atoms of a basic nature that are not able to chemisorb oxygen from the air at the same conditions. (C) 1997 Elsevier Science B.V.

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Documento generato il 21/09/20 alle ore 06:36:19