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Titolo:
Dynamic reaction characteristics affected by water molecules during the methanol to olefin conversion on NiAPSO-34 catalysts
Autore:
Kang, M; Inui, T;
Indirizzi:
Kyoto,Univ, Grad Sch Engn, Dept Energy & Hydrocarbon, Sakyo Ku, Kyoto 60601 Kyoto Univ Kyoto Japan 60601 Energy & Hydrocarbon, Sakyo Ku, Kyoto 60601
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
fascicolo: 1, volume: 140, anno: 1999,
pagine: 55 - 63
SICI:
1381-1169(19990319)140:1<55:DRCABW>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICKEL SILICOALUMINOPHOSPHATE CATALYST; LIGHT OLEFINS; SIEVES; SAPO-34; ETHENE; NMR;
Keywords:
NiAPSO-34; methanol conversion; ethylene synthesis; effect of H2O addition; Bronsted acid sites; structural change;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Inui, T 5-43,1 Chome, Uji, Kyoto 6110012, Japan 5-43,1 Chome Uji Kyoto Japan 6110012 e, Uji, Kyoto 6110012, Japan
Citazione:
M. Kang e T. Inui, "Dynamic reaction characteristics affected by water molecules during the methanol to olefin conversion on NiAPSO-34 catalysts", J MOL CAT A, 140(1), 1999, pp. 55-63

Abstract

As a method of more stable and quantitative ethylene synthesis at completemethanol conversion: water addition in the reaction was dens. The presenceof water affected on the coordination of Al or P, and it consequently led to the structural change of NiAPSO-34 crystals. Ln spite of the partial structural change, the water addition with a proper concentration into the methanol conversion reaction was effective for the increase of selectivity to ethylene, and kept the activity at a constant level. From the results of NH3-TPD and TR spectra, it was certified that the amounts of Bronsted acid sites in the catalyst was affected by the steam, and this was adopted to the improvement in the catalytic performance of the methanol conversion. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:02:37