Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Deactivation of the metal and acidic functions for Pt, Pt-Sn and Pt-Sn-K using physically mixed catalysts
Autore:
Srihiranpullop, S; Praserthdam, P; Mongkhonsi, T;
Indirizzi:
Chulalongkorn Univ, Dept Chem Engn, Bangkok 10330, Thailand Chulalongkorn Univ Bangkok Thailand 10330 Engn, Bangkok 10330, Thailand
Titolo Testata:
KOREAN JOURNAL OF CHEMICAL ENGINEERING
fascicolo: 5, volume: 17, anno: 2000,
pagine: 548 - 552
SICI:
0256-1115(200009)17:5<548:DOTMAA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
REFORMING CATALYSTS; PORE STRUCTURE; ISOBUTANE DEHYDROGENATION; HYDROGEN MORDENITE; COKE FORMATION; COKING; PLATINUM; SELECTIVITY; DEPOSITS; OLEFINS;
Keywords:
deactivation; Pt-based catalyst; Pt-based catalyst modified with Sn and/or K; physically mixed catalyst;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Srihiranpullop, S Chulalongkorn Univ, Dept Chem Engn, Bangkok 10330, Thailand Chulalongkorn Univ Bangkok Thailand 10330 30, Thailand
Citazione:
S. Srihiranpullop et al., "Deactivation of the metal and acidic functions for Pt, Pt-Sn and Pt-Sn-K using physically mixed catalysts", KOR J CHEM, 17(5), 2000, pp. 548-552

Abstract

The effect of K addition on the amount and dispersion of carbon depositionon metal sites and support sites was investigated on a physical mixture for hexane dehydrogenation. TPO, BET and ESR experiments were used for characterization. The K addition significantly decreases catalyst deactivation involving the amount of coke deposits and the density of carbon radicals on the metal and support sites because of ensemble and electronic effects, especially on the metal sites. Coke on the metal sites associated with carbonaceous species rich in hydrogen is less polymerized than coke on the support sites. corresponding to a more graphitic-like carbon.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 03:38:33