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Titolo:
Low-temperature isomerization of 1-butene on Mo2N/gamma-Al2O3 catalyst studied by in situ FT-IR spectroscopy
Autore:
Wu, ZL; Li, C; Ying, PL; Wei, ZB; Xin, Q;
Indirizzi:
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China Chinese Acad Sci Dalian Peoples R China 116023 n 116023, Peoples R China
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 38, volume: 105, anno: 2001,
pagine: 9183 - 9190
SICI:
1520-6106(20010927)105:38<9183:LIO1OM>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLYBDENA-ALUMINA CATALYSTS; TRANSITION-METAL CARBIDES; BUTENE ISOMERIZATION; ADSORPTION; NITRIDE; SURFACE; HYDRODESULFURIZATION; METATHESIS; MECHANISM; ETHYLENE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Li, C Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, POB 110,Dalian 116023, Peoples R China Chinese Acad Sci POB 110 Dalian Peoples R China 116023 ples R China
Citazione:
Z.L. Wu et al., "Low-temperature isomerization of 1-butene on Mo2N/gamma-Al2O3 catalyst studied by in situ FT-IR spectroscopy", J PHYS CH B, 105(38), 2001, pp. 9183-9190

Abstract

The adsorption and reaction of 1-butene on Mo2N/gamma -Al2O3 catalyst havebeen studied by in situ FT-IR spectroscopy at low temperatures, 145 K to room temperature (RT). The adsorbed 1-butene can be converted to cis- and trans-2-butenes below 201 K on Mo2N/gamma -Al2O3 catalyst. The result of coadsorption of 1-butene with CO indicates that 1-butene is mainly adsorbed on the surface Mo sites of the nitrided catalyst. No isomerization of adsorbed1-butene and 2-butenes on reduced passivated Mo2N/gamma -Al2O3 sample below RT is observed. It is suggested that the double-bond migration (DBM) of 1-butene is mainly proceeded via an alkyl species on the surface cus Mo sites of Mo2N/gamma -Al2O3 catalyst. This resembles the behaviors of Group VIIImetals in the isomerization of butenes. The incorporated nitrogen atoms are proposed to devote to both the valence state of surface Mo sites and the interaction between 1-butene and the nitrided catalyst. A possible path from 1-butene conversion to 2-butenes on Mo2N/gamma -Al2O3 catalyst is proposed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 07:02:55