High-Temperature Synthesis of Materials: Glycothermal Synthesis of Alpha Aluminum Oxide

Nelson S. Bell, Seung Beom Cho, James Hansell Adair

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A technology for the glycothermal synthesis of α-Al2O3 particles of controlled size and shape has been developed. This technique allows for the production of anisometrically shaped particles with controlled morphology and size distribution. Morphological control of particle shape is described as a function of reaction conditions in which platelet morphologies are produced at high shear rates and polyhedra are formed at low shear rates. Particle size control is also investigated via the use of seed materials which promote epitaxial growth, thereby reducing the surface energy contribution to the nucleation barrier. α-Al2O3 seed materials can be used to form particle sizes as small as 100-200 nm without agglomeration. α-Fe2O3 seeds have similar effects in comparison with the α-Al2O3 seeds, but require higher values of seed number concentration to achieve equivalent particle size effects. Morphological control is unaffected by seeding additions.

Original languageEnglish (US)
Pages (from-to)120-133
Number of pages14
JournalACS Symposium Series
Volume681
StatePublished - Dec 1 1998

Fingerprint

Aluminum Oxide
Seed
Aluminum
Oxides
Particle size
Shear deformation
Temperature
Platelets
Epitaxial growth
Interfacial energy
Nucleation
Agglomeration

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

@article{837f620f4bf840408f39e915645cb02f,
title = "High-Temperature Synthesis of Materials: Glycothermal Synthesis of Alpha Aluminum Oxide",
abstract = "A technology for the glycothermal synthesis of α-Al2O3 particles of controlled size and shape has been developed. This technique allows for the production of anisometrically shaped particles with controlled morphology and size distribution. Morphological control of particle shape is described as a function of reaction conditions in which platelet morphologies are produced at high shear rates and polyhedra are formed at low shear rates. Particle size control is also investigated via the use of seed materials which promote epitaxial growth, thereby reducing the surface energy contribution to the nucleation barrier. α-Al2O3 seed materials can be used to form particle sizes as small as 100-200 nm without agglomeration. α-Fe2O3 seeds have similar effects in comparison with the α-Al2O3 seeds, but require higher values of seed number concentration to achieve equivalent particle size effects. Morphological control is unaffected by seeding additions.",
author = "Bell, {Nelson S.} and Cho, {Seung Beom} and Adair, {James Hansell}",
year = "1998",
month = "12",
day = "1",
language = "English (US)",
volume = "681",
pages = "120--133",
journal = "ACS Symposium Series",
issn = "0097-6156",
publisher = "American Chemical Society",

}

High-Temperature Synthesis of Materials : Glycothermal Synthesis of Alpha Aluminum Oxide. / Bell, Nelson S.; Cho, Seung Beom; Adair, James Hansell.

In: ACS Symposium Series, Vol. 681, 01.12.1998, p. 120-133.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-Temperature Synthesis of Materials

T2 - Glycothermal Synthesis of Alpha Aluminum Oxide

AU - Bell, Nelson S.

AU - Cho, Seung Beom

AU - Adair, James Hansell

PY - 1998/12/1

Y1 - 1998/12/1

N2 - A technology for the glycothermal synthesis of α-Al2O3 particles of controlled size and shape has been developed. This technique allows for the production of anisometrically shaped particles with controlled morphology and size distribution. Morphological control of particle shape is described as a function of reaction conditions in which platelet morphologies are produced at high shear rates and polyhedra are formed at low shear rates. Particle size control is also investigated via the use of seed materials which promote epitaxial growth, thereby reducing the surface energy contribution to the nucleation barrier. α-Al2O3 seed materials can be used to form particle sizes as small as 100-200 nm without agglomeration. α-Fe2O3 seeds have similar effects in comparison with the α-Al2O3 seeds, but require higher values of seed number concentration to achieve equivalent particle size effects. Morphological control is unaffected by seeding additions.

AB - A technology for the glycothermal synthesis of α-Al2O3 particles of controlled size and shape has been developed. This technique allows for the production of anisometrically shaped particles with controlled morphology and size distribution. Morphological control of particle shape is described as a function of reaction conditions in which platelet morphologies are produced at high shear rates and polyhedra are formed at low shear rates. Particle size control is also investigated via the use of seed materials which promote epitaxial growth, thereby reducing the surface energy contribution to the nucleation barrier. α-Al2O3 seed materials can be used to form particle sizes as small as 100-200 nm without agglomeration. α-Fe2O3 seeds have similar effects in comparison with the α-Al2O3 seeds, but require higher values of seed number concentration to achieve equivalent particle size effects. Morphological control is unaffected by seeding additions.

UR - http://www.scopus.com/inward/record.url?scp=0345867431&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345867431&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0345867431

VL - 681

SP - 120

EP - 133

JO - ACS Symposium Series

JF - ACS Symposium Series

SN - 0097-6156

ER -