Layered double hydroxides and their pillared derivatives - Materials for solid base catalysis; synthesis and characterization

Attila Béres, I. Pálinkó, I. Kiricsi, János B. Nagy, Yoshimichi Kiyozumi, Fujio Mizukami

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Mg-Al and Zn-Al L(ayered) D(ouble) H(ydroxide)s have been prepared and characterized. Thermal and dehydration/ rehydration behaviour was studied by thermoanalytical methods (TG, DTG, DTA) and 27Al M(agic) A(ngle) S(pinning) NMR spectroscopy, X-ray diffractometry (XRD) and S(canning) E(lectron) M(icroscopy). Acid-base properties of the calcined samples were investigated by T(emperature) P(rogrammed) D(esorption) of preadsorbed CO2 and the double-bond isomerization reaction of 1-butene. Heat treatment destroyed the layered structure, which could be only partially reconstituted by rehydration. On calcination mixed oxide with the predominance of basic sites were formed. Pillaring of the LDHs with organic (terephtalate, dodecyl sulphate) as well as inorganic (oxometallate, ferrocyanide) anions were also performed. The materials were characterized by infrared (IR) spectroscopy, XRD and BET measurements. Heat stabilities of the pillared substances were investigated too. Pillaring by various methods proved to be successful, however, decreased heat resistance was found in the intercalated materials relative to the host LDHs.

Original languageEnglish
Pages (from-to)237-247
Number of pages11
JournalApplied Catalysis A: General
Volume182
Issue number2
Publication statusPublished - Jun 21 1999

Fingerprint

Hydroxides
X ray diffraction analysis
Catalysis
Canning
Derivatives
Isomerization
Butenes
Dehydration
Heat resistance
Calcination
Differential thermal analysis
Oxides
Nuclear magnetic resonance spectroscopy
Anions
Infrared spectroscopy
Negative ions
Heat treatment
Acids
Hot Temperature

Keywords

  • Acid-base properties
  • Dehydration/rehydration and stability characterization
  • Layered double hydroxides
  • Pillared layered double hydroxides
  • Thermal behaviour

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Layered double hydroxides and their pillared derivatives - Materials for solid base catalysis; synthesis and characterization. / Béres, Attila; Pálinkó, I.; Kiricsi, I.; Nagy, János B.; Kiyozumi, Yoshimichi; Mizukami, Fujio.

In: Applied Catalysis A: General, Vol. 182, No. 2, 21.06.1999, p. 237-247.

Research output: Contribution to journalArticle

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