Effects of inorganic cation templates on octahedral molecular sieves of manganese oxide

Journal Article · Wed Nov 30 04:00:00 EST 1994 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00103a018· OSTI ID:6737511

Shen, Y F; Suib, S L ^[1]; O'Young, C L ^[2]

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1. Univ. of Connecticut, Storrs, CT (United States)
2. Texaco, Inc., Beacon, NY (United States)

Five hydrated inorganic divalent cations, Mg[sup 2+], Co[sup 2+], Ni[sup 2+], Cu[sup 2+], and Zn[sup 2+], have successfully been used as templates for the synthesis of manganese oxide octahedral molecular sieves (OMS-1) having the todorokite structure. The OMS-1 samples have been well characterized by X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy/energy dispersive X-ray studies, inductively coupled plasma analysis, electron paramagnetic resonance, Fourier transform infrared spectroscopy, thiosulfate titration, and cyclohexane sorption. Catalytic CO oxidation and 2-propanol decomposition were carried out. Results show that these OMS-1 samples with a tunnel size of about 6.9 angstroms are crystalline and chemically pure. They have the following formulas: Mg[sub 3.17]Mn[sub 5.05]O[sub 12] [center dot] 4.52H[sub 2]O, Co[sub 1.84]Mn[sub 5.59]O[sub 12] [center dot] 3.45H[sub 2]O, Ni[sub 1.64]Mn[sub 5.75]O[sub 12] [center dot] 4.19H[sub 2]O, Cu[sub 3.50]Mn[sub 4.45]O[sub 12] [center dot] 5.33H[sub 2]O, and Zn[sub 3.55]Mn[sub 4.47]O[sub 12] [center dot] 2.59H[sub 2]O. Their thermal stability largely depends on the nature of the cations. 47 refs., 16 figs., 3 tabs.

• OSTI ID: 6737511
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 116:24; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400102 -- Chemical & Spectral Procedures
ADSORBENTS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
CALORIMETRY
CATALYSTS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL ANALYSIS
COBALT IONS
COHERENT SCATTERING
COMPILED DATA
COPPER IONS
CYCLOALKANES
CYCLOHEXANE
DATA
DIFFRACTION
ELECTRON MICROSCOPY
ELECTRON SPIN RESONANCE
GRAVIMETRIC ANALYSIS
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
IONS
MAGNESIUM COMPOUNDS
MAGNESIUM IONS
MAGNESIUM OXIDES
MAGNETIC RESONANCE
MICROSCOPY
MOLECULAR SIEVES
MOLECULAR STRUCTURE
NICKEL IONS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RESONANCE
SCANNING ELECTRON MICROSCOPY
SCATTERING
SPECTRA
SYNTHESIS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TITRATION
X-RAY DIFFRACTION
ZINC IONS