Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Kinetic investigation of reaction between metallic silver and nitric acid solutions
Autore:
Ozmetin, C; Copur, M; Yartasi, A; Kocakerim, MM;
Indirizzi:
Ataturk Univ, Dept Chem Engn, TR-25240 Erzurum, Turkey Ataturk Univ Erzurum Turkey TR-25240 Chem Engn, TR-25240 Erzurum, Turkey
Titolo Testata:
CHEMICAL ENGINEERING & TECHNOLOGY
fascicolo: 8, volume: 23, anno: 2000,
pagine: 707 - 711
SICI:
0930-7516(200008)23:8<707:KIORBM>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Ozmetin, C Ataturk Univ, Dept Chem Engn, TR-25240 Erzurum, Turkey Ataturk Univ Erzurum Turkey TR-25240 TR-25240 Erzurum, Turkey
Citazione:
C. Ozmetin et al., "Kinetic investigation of reaction between metallic silver and nitric acid solutions", CHEM ENG TE, 23(8), 2000, pp. 707-711

Abstract

In this study, the reaction kinetics between metallic silver and nitric acid solutions was investigated by taking into consideration the parameters of temperature, solid-to-liquid ratio, stirring speed, nitric acid concentration, particle size and addition of sodium nitrite. It was determined that the dissolution rate of the process increased with decreasing particle sizeand solid-to-liquid ratio, and increasing nitric acid concentration, reaction temperature and the amount of the sodium nitrite in the solution. In addition, it was observed that the stirring speed had more effect on the dissolution rate at low stirring speeds than at high stirring speeds. In the present study, the examination of shrinking core models of fluid-solid systems showed that the dissolution of metallic silver in the nitric acid solutions was controlled by the reaction on the surface. A semiempirical model, which represented well the process, was developed by statistical methods. Theactivation energy of the process was found to be 57.66 kJ mol(-1).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:01:41