Formation of novel Al                         2                         O                         3                          surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water

S. Kameoka; M. Kuroda; K. Aoyagi; S. Ito; K. Kunimori

doi:10.1016/S0169-4332(97)00329-2

Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water

S. Kameoka, M. Kuroda, K. Aoyagi, S. Ito, K. Kunimori

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

4 Citations (Scopus)

Abstract

NH ₃ was produced by the reaction of plasma-excited nitrogen with surface OH groups on Al ₂ O ₃ . The surface of the Al ₂ O ₃ formed by the N ₂ plasma treatment was different from the dehydroxylated surface (Al ⁺ + Al-O ^- ), which is obtained by usual thermal treatment, and may be changed to an excess oxygen phase; i.e., the formation of a novel Al ₂ O ₃ surface (designated by Al-O (black star)). The Al-O (black star) surface was restored by the water treatment, which was accompanied with O ₂ generation. The amount of generated O ₂ well correlated with the amount of ammonia produced. We proposed that an uphill reaction (N ₂ + 3H ₂ O → 2NH ₃ + 3/2O ₂ ) takes place on the Al ₂ O ₃ surface by means of N ₂ plasma treatment followed by water treatment at room temperature.

Original language	English
Pages (from-to)	351-354
Number of pages	4
Journal	Applied Surface Science
Volume	121-122
DOIs	https://doi.org/10.1016/S0169-4332(97)00329-2
Publication status	Published - 1997 Nov
Externally published	Yes

Keywords

Formation of novel Al O surface
NH formation
O formation
Plasma-excited nitrogen treatment
Uphill reaction

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/S0169-4332(97)00329-2

Cite this

Kameoka, S., Kuroda, M., Aoyagi, K., Ito, S., & Kunimori, K. (1997). Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water Applied Surface Science, 121-122, 351-354. https://doi.org/10.1016/S0169-4332(97)00329-2

Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water . / Kameoka, S.; Kuroda, M.; Aoyagi, K. et al.

In: Applied Surface Science, Vol. 121-122, 11.1997, p. 351-354.

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

Kameoka, S, Kuroda, M, Aoyagi, K, Ito, S & Kunimori, K 1997, ' Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water ', Applied Surface Science, vol. 121-122, pp. 351-354. https://doi.org/10.1016/S0169-4332(97)00329-2

Kameoka S, Kuroda M, Aoyagi K, Ito S, Kunimori K. Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water Applied Surface Science. 1997 Nov;121-122:351-354. doi: 10.1016/S0169-4332(97)00329-2

Kameoka, S. ; Kuroda, M. ; Aoyagi, K. et al. / Formation of novel Al ₂ O ₃ surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water In: Applied Surface Science. 1997 ; Vol. 121-122. pp. 351-354.

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title = " Formation of novel Al 2 O 3 surface (Al-O(black star)) by plasma-excited nitrogen and its catalytic application - Production of ammonia and oxygen from nitrogen and water ",

abstract = " NH 3 was produced by the reaction of plasma-excited nitrogen with surface OH groups on Al 2 O 3 . The surface of the Al 2 O 3 formed by the N 2 plasma treatment was different from the dehydroxylated surface (Al + + Al-O - ), which is obtained by usual thermal treatment, and may be changed to an excess oxygen phase; i.e., the formation of a novel Al 2 O 3 surface (designated by Al-O (black star)). The Al-O (black star) surface was restored by the water treatment, which was accompanied with O 2 generation. The amount of generated O 2 well correlated with the amount of ammonia produced. We proposed that an uphill reaction (N 2 + 3H 2 O → 2NH 3 + 3/2O 2 ) takes place on the Al 2 O 3 surface by means of N 2 plasma treatment followed by water treatment at room temperature.",

keywords = "Formation of novel Al O surface, NH formation, O formation, Plasma-excited nitrogen treatment, Uphill reaction",

author = "S. Kameoka and M. Kuroda and K. Aoyagi and S. Ito and K. Kunimori",

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AU - Ito, S.

AU - Kunimori, K.

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N2 - NH 3 was produced by the reaction of plasma-excited nitrogen with surface OH groups on Al 2 O 3 . The surface of the Al 2 O 3 formed by the N 2 plasma treatment was different from the dehydroxylated surface (Al + + Al-O - ), which is obtained by usual thermal treatment, and may be changed to an excess oxygen phase; i.e., the formation of a novel Al 2 O 3 surface (designated by Al-O (black star)). The Al-O (black star) surface was restored by the water treatment, which was accompanied with O 2 generation. The amount of generated O 2 well correlated with the amount of ammonia produced. We proposed that an uphill reaction (N 2 + 3H 2 O → 2NH 3 + 3/2O 2 ) takes place on the Al 2 O 3 surface by means of N 2 plasma treatment followed by water treatment at room temperature.

AB - NH 3 was produced by the reaction of plasma-excited nitrogen with surface OH groups on Al 2 O 3 . The surface of the Al 2 O 3 formed by the N 2 plasma treatment was different from the dehydroxylated surface (Al + + Al-O - ), which is obtained by usual thermal treatment, and may be changed to an excess oxygen phase; i.e., the formation of a novel Al 2 O 3 surface (designated by Al-O (black star)). The Al-O (black star) surface was restored by the water treatment, which was accompanied with O 2 generation. The amount of generated O 2 well correlated with the amount of ammonia produced. We proposed that an uphill reaction (N 2 + 3H 2 O → 2NH 3 + 3/2O 2 ) takes place on the Al 2 O 3 surface by means of N 2 plasma treatment followed by water treatment at room temperature.

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