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Continuous Synthesis of High-surface-area Aluminum Hydroxide Methoxide Nano- and Microparticles in Supercritical Methanol and their Conversion Into γ-Al2O3

High-surface-area aluminum hydroxide methoxide (CH4Al2O4) nano- and microparticles are synthesized
continuously in supercritical methanol (scMeOH). The properties of the particle synthesized in scMeOH are
compared with those synthesized in supercritical water (scH2O). The XRD analysis reveals that the particles
synthesized in scMeOH retain aluminum hydroxide methoxide crystalline structure while the particles
synthesized in supercritical water retain boehmite (AlOOH) crystalline structure. Plate-shape particles are
synthesized in scH2O while highly porous, flake-like particles are synthesized in scMeOH. Due to the porous
structure, the CH4Al2O4 particles have much higher BET surface area (314 m2/g) than that of the boehmite
particles (35.9 m2/g). The FT-IR analysis indicates that aliphatic, carbonyl, and hydroxyl groups are present on the surface of the CH4Al2O4 particles. When heat treated at 800 °C, the CH4Al2O4 phase is converted to γ-Al2O3 phase with a BET surface area of 164 m2/g.

Ketersediaan

Informasi Detail

Judul Seri

MATERIALS LETTERS; Vol.65, No.4, Feb 2011

No. Panggil

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Penerbit

Amsterdam : Elsevier., 2011

Deskripsi Fisik

p. 772 - 774

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

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Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

Y-AL2O3
NANO- AND MICROPARTICLES
NANOCRYSTALLINE MATERIALS
SUPERCRITICAL METHANOL
ALUMINIUM HYDROXIDE METHOXIDE

Info Detail Spesifik

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Pernyataan Tanggungjawab

Bambang Veriansyah, Ratna F. Susanti, Agung Nugroho, Byoung Koun Min, Jaehoon Kim

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