Continuous synthesis of high-surface-area aluminum hydroxide methoxide nano- and microparticles in supercritical methanol and their conversion into γ-Al2O3

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

doi:10.1016/j.matlet.2010.11.048

Continuous synthesis of high-surface-area aluminum hydroxide methoxide nano- and microparticles in supercritical methanol and their conversion into γ-Al₂O₃

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

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

High-surface-area aluminum hydroxide methoxide (CH₄Al ₂O₄) 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 (scH ₂O). 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 CH ₄Al₂O₄ particles. When heat treated at 800°C, the CH₄Al₂O₄ phase is converted to γ-Al₂O₃ phase with a BET surface area of 164 m ²/g. Crown

Original language	English
Pages (from-to)	772-774
Number of pages	3
Journal	Materials Letters
Volume	65
Issue number	4
DOIs	https://doi.org/10.1016/j.matlet.2010.11.048
Publication status	Published - 2011 Feb 28

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Keywords

γ-AlO
Aluminum hydroxide methoxide
Nano- and microparticles
Nanocrystalline materials
Supercritical methanol

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanical Engineering
Mechanics of Materials

Cite this

Veriansyah, B., Susanti, R. F., Nugroho, A., Min, B. K., & Kim, J. (2011). Continuous synthesis of high-surface-area aluminum hydroxide methoxide nano- and microparticles in supercritical methanol and their conversion into γ-Al₂O₃ Materials Letters, 65(4), 772-774. https://doi.org/10.1016/j.matlet.2010.11.048

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title = "Continuous synthesis of high-surface-area aluminum hydroxide methoxide nano- and microparticles in supercritical methanol and their conversion into γ-Al2O3 ",

abstract = "High-surface-area aluminum hydroxide methoxide (CH4Al 2O4) 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 (scH 2O). 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 CH 4Al2O4 particles. When heat treated at 800°C, the CH4Al2O4 phase is converted to γ-Al2O3 phase with a BET surface area of 164 m 2/g. Crown",

keywords = "γ-AlO, Aluminum hydroxide methoxide, Nano- and microparticles, Nanocrystalline materials, Supercritical methanol",

author = "Bambang Veriansyah and Susanti, {Ratna F.} and Agung Nugroho and Min, {Byoung Koun} and Jaehoon Kim",

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AU - Min, Byoung Koun

AU - Kim, Jaehoon

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N2 - High-surface-area aluminum hydroxide methoxide (CH4Al 2O4) 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 (scH 2O). 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 CH 4Al2O4 particles. When heat treated at 800°C, the CH4Al2O4 phase is converted to γ-Al2O3 phase with a BET surface area of 164 m 2/g. Crown

AB - High-surface-area aluminum hydroxide methoxide (CH4Al 2O4) 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 (scH 2O). 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 CH 4Al2O4 particles. When heat treated at 800°C, the CH4Al2O4 phase is converted to γ-Al2O3 phase with a BET surface area of 164 m 2/g. Crown

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10.1016/j.matlet.2010.11.048