Nanoscale Metal Oxide Particles/Clusters as Chemical Reagents. Synthesis and Properties of Ultrahigh Surface Area Magnesium Hydroxide and Magnesium Oxide

Suchada Utamapanya; Kenneth J. Klabunde; John R. Schlup

doi:10.1021/cm00013a036

Nanoscale Metal Oxide Particles/Clusters as Chemical Reagents. Synthesis and Properties of Ultrahigh Surface Area Magnesium Hydroxide and Magnesium Oxide

Suchada Utamapanya, Kenneth J. Klabunde, John R. Schlup

Research output: Contribution to journal › Article › peer-review

369 Scopus citations

Abstract

A modified autoclave hypercritical drying procedure has been used to prepare a hydrated form of MgO from Mg(OCH₃)₂ in a methanol-toluene solvent mixture. This material was prepared with 1000 m²/g surface area and 35-Å crystallite size. Heat treatment of this precursor at 500 °C under vacuum yielded the dehydrated MgO with 500 m²/g surface area and 45-Å crystallite size. The samples were further characterized by Fourier transform infrared/photoacoustic spectroscopy (FT-IR/PAS), X-ray diffraction, scanning electron microscopy, and chemical analyses. The hydrated precursor contained some residual -OCH₃ groups and was much less crystalline in appearance than conventionally prepared MgO-Mg(OH)₂ samples. The dehydrated material was free of -OCH₃ groups and was made up of much smaller crystallites than conventionally prepared MgO.

Original language	English (US)
Pages (from-to)	175-181
Number of pages	7
Journal	Chemistry of Materials
Volume	3
Issue number	1
DOIs	https://doi.org/10.1021/cm00013a036
State	Published - Jan 1 1991
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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abstract = "A modified autoclave hypercritical drying procedure has been used to prepare a hydrated form of MgO from Mg(OCH3)2 in a methanol-toluene solvent mixture. This material was prepared with 1000 m2/g surface area and 35-{\AA} crystallite size. Heat treatment of this precursor at 500 °C under vacuum yielded the dehydrated MgO with 500 m2/g surface area and 45-{\AA} crystallite size. The samples were further characterized by Fourier transform infrared/photoacoustic spectroscopy (FT-IR/PAS), X-ray diffraction, scanning electron microscopy, and chemical analyses. The hydrated precursor contained some residual -OCH3 groups and was much less crystalline in appearance than conventionally prepared MgO-Mg(OH)2 samples. The dehydrated material was free of -OCH3 groups and was made up of much smaller crystallites than conventionally prepared MgO.",

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AU - Utamapanya, Suchada

AU - Klabunde, Kenneth J.

AU - Schlup, John R.

PY - 1991/1/1

Y1 - 1991/1/1

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AB - A modified autoclave hypercritical drying procedure has been used to prepare a hydrated form of MgO from Mg(OCH3)2 in a methanol-toluene solvent mixture. This material was prepared with 1000 m2/g surface area and 35-Å crystallite size. Heat treatment of this precursor at 500 °C under vacuum yielded the dehydrated MgO with 500 m2/g surface area and 45-Å crystallite size. The samples were further characterized by Fourier transform infrared/photoacoustic spectroscopy (FT-IR/PAS), X-ray diffraction, scanning electron microscopy, and chemical analyses. The hydrated precursor contained some residual -OCH3 groups and was much less crystalline in appearance than conventionally prepared MgO-Mg(OH)2 samples. The dehydrated material was free of -OCH3 groups and was made up of much smaller crystallites than conventionally prepared MgO.

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Nanoscale Metal Oxide Particles/Clusters as Chemical Reagents. Synthesis and Properties of Ultrahigh Surface Area Magnesium Hydroxide and Magnesium Oxide

Abstract

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