Abstract
To develop a carbothermal reduction process for the conversion of oxides to nitrides, a montmorillonite-polyacrylonitrile (PAN) intercalation compound was applied as a precursor. Montmorillonite-carbon mixtures were heated as well as the intercalation compound in N2 at 1100 to 1500° C for comparison. From the intercalation compound, β-sialon, AIN and SiC were mainly formed. Oxides were reduced without their crystallization. On the other hand, in the reactions of the mixtures, some oxides and other kinds of nitride were obtained as principal products in addition to these phases. Furthermore, the intercalation compound was more favourable than the mixtures having a larger amount of carbon in terms of the reduction of oxides and the formation of nitrides. These observations suggest that the layered structure of the intercalation compound led to an effective and specific carbothermal reduction process.
| Original language | English |
|---|---|
| Pages (from-to) | 3572-3577 |
| Number of pages | 6 |
| Journal | Journal of Materials Science |
| Volume | 23 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1988 Oct |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
Cite this
The carbothermal reduction process of a montmorillonite-polyacrylonitrile intercalation compound. / Sugahara, Yoshiyuki; Kuroda, Kazuyuki; Kato, Chuzo.
In: Journal of Materials Science, Vol. 23, No. 10, 10.1988, p. 3572-3577.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The carbothermal reduction process of a montmorillonite-polyacrylonitrile intercalation compound
AU - Sugahara, Yoshiyuki
AU - Kuroda, Kazuyuki
AU - Kato, Chuzo
PY - 1988/10
Y1 - 1988/10
N2 - To develop a carbothermal reduction process for the conversion of oxides to nitrides, a montmorillonite-polyacrylonitrile (PAN) intercalation compound was applied as a precursor. Montmorillonite-carbon mixtures were heated as well as the intercalation compound in N2 at 1100 to 1500° C for comparison. From the intercalation compound, β-sialon, AIN and SiC were mainly formed. Oxides were reduced without their crystallization. On the other hand, in the reactions of the mixtures, some oxides and other kinds of nitride were obtained as principal products in addition to these phases. Furthermore, the intercalation compound was more favourable than the mixtures having a larger amount of carbon in terms of the reduction of oxides and the formation of nitrides. These observations suggest that the layered structure of the intercalation compound led to an effective and specific carbothermal reduction process.
AB - To develop a carbothermal reduction process for the conversion of oxides to nitrides, a montmorillonite-polyacrylonitrile (PAN) intercalation compound was applied as a precursor. Montmorillonite-carbon mixtures were heated as well as the intercalation compound in N2 at 1100 to 1500° C for comparison. From the intercalation compound, β-sialon, AIN and SiC were mainly formed. Oxides were reduced without their crystallization. On the other hand, in the reactions of the mixtures, some oxides and other kinds of nitride were obtained as principal products in addition to these phases. Furthermore, the intercalation compound was more favourable than the mixtures having a larger amount of carbon in terms of the reduction of oxides and the formation of nitrides. These observations suggest that the layered structure of the intercalation compound led to an effective and specific carbothermal reduction process.
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U2 - 10.1007/BF00540497
DO - 10.1007/BF00540497
M3 - Article
VL - 23
SP - 3572
EP - 3577
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 10
ER -