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Titolo:
Influence of the acid-base properties of solid catalysts derived from hydrotalcite-like compounds on the condensation of formaldehyde and acetaldehyde
Autore:
Dumitriu, E; Hulea, V; Chelaru, C; Catrinescu, C; Tichit, D; Durand, R;
Indirizzi:
Tech Univ Iasi, Catalysis Lab, Iasi 6600, Romania Tech Univ Iasi Iasi Romania 6600 Iasi, Catalysis Lab, Iasi 6600, Romania ENSCM,lier,Materiaux Catalyt & Catalyse Chim Organ, CNRS, UMR 5618, Montpel ENSCM Montpellier France & Catalyse Chim Organ, CNRS, UMR 5618, Montpel
Titolo Testata:
APPLIED CATALYSIS A-GENERAL
fascicolo: 2, volume: 178, anno: 1999,
pagine: 145 - 157
SICI:
0926-860X(19990322)178:2<145:IOTAPO>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE ALDOL CONDENSATION; LAYERED DOUBLE HYDROXIDES; METAL-OXIDE SURFACES; PHYSICOCHEMICAL PROPERTIES; ALUMINUM HYDROTALCITES; CALCINED HYDROTALCITES; ANIONIC CLAYS; ZEOLITES; DECOMPOSITION; ISOPROPANOL;
Keywords:
hydrotalcite-like materials; acid-base properties; aldol condensation; acrolein; formaldehyde; acetaldehyde;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Dumitriu, E Tech Univ Iasi, Catalysis Lab, 71 D Mangeron Ave, Iasi 6600, Romania Tech Univ Iasi 71 D Mangeron Ave Iasi Romania 6600 0, Romania
Citazione:
E. Dumitriu et al., "Influence of the acid-base properties of solid catalysts derived from hydrotalcite-like compounds on the condensation of formaldehyde and acetaldehyde", APP CATAL A, 178(2), 1999, pp. 145-157

Abstract

The vapor-phase aldol condensation of formaldehyde with acetaldehyde was studied using various oxide mixtures obtained in situ from hydrotalcite-likematerials as catalysts. All samples exhibited catalytic activity, but the selectivity to both the aldol condensation and the acrolein formation is governed by the balance of acidic and basic properties. The oxides containingMg and Al or Co and Al showed a high selectivity to aldol condensation (90% at 300 degrees C) as well as to cross-condensation (80% at 300 degrees C). The effects of both the reaction variables (temperature, mole ratio of reagents) and the catalyst variables (nature of cations, nature of anions) were studied. (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 06/07/20 alle ore 05:53:42