Intercalation of hydrotalcite-like anionic clays with boron anions and their effect on cyclohexanone oxime isomerization

Intercalated boron anions in hydrotalcite-like compounds (B-HTlc) were obtained by ionic-exchange of an adipate-containing hydrotalcite and coprecipitation. Catalysts have been characterized by X-ray diffraction and scanning electron microscopy (SEM). The ionic exchange method seems to allow a great...

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Bibliographic Details
Published inMicroporous and mesoporous materials Vol. 107; no. 1; pp. 39 - 45
Main Authors Forni, L., Fornasari, G., Trifirò, F.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier Inc 2008
Elsevier
Subjects
Boron anions
Catalysis
Chemistry
Colloidal state and disperse state
Coprecipitation
Cyclohexanone oxime
Exact sciences and technology
General and physical chemistry
HTlc
Ionic exchange
Porous materials
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Boron anions
HTlc
Cyclohexanone oxime
Coprecipitation
Ionic exchange
Clay
Heterogeneous catalysis
Boron
Hydrotalcite
Lamellar compound
Isomerization
Oxime
HT1c
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Summary:Intercalated boron anions in hydrotalcite-like compounds (B-HTlc) were obtained by ionic-exchange of an adipate-containing hydrotalcite and coprecipitation. Catalysts have been characterized by X-ray diffraction and scanning electron microscopy (SEM). The ionic exchange method seems to allow a greater distribution of boron oxides on the outer surface than the coprecipitated sample. Catalytic tests – on the rearrangement of cyclohexanone oxime into caprolactam, on exchanged and coprecipitated samples compared with a catalyst obtained by impregnation of a Mg/Al oxide – clearly indicate that caprolactam formation is strictly related to the surface features of these materials.
ISSN:1387-1811
1873-3093
DOI:10.1016/j.micromeso.2007.05.048