Selective wet-air oxidation of diluted aqueous ammonia solutions over supported Ni catalysts

被引：22

作者：

Kaewpuang-Ngam, S ^{[1
]}

Inazu, K ^{[1
]}

Kobayashi, T ^{[1
]}

Aika, KI ^{[1
]}

机构：

[1] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Environm Chem & Engn, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

WATER RESEARCH | 2004年 / 38卷 / 03期

关键词：

selective wet-air oxidation; supported nickel catalyst; nickel aluminate; ammonia removal;

D O I：

10.1016/j.watres.2003.10.025

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Wet-air oxidation (WAO) of diluted aqueous ammonia solutions over Ni supported on Al2O3 catalysts was investigated. A nitrogen selectivity of similar to90% was achieved by the WAO of ammonia over the 20-wt% Ni/Al2O3 catalyst at 503 K, a reaction time of 2 It and air-feed pressure of 2.0 MPa without the dissolution of Ni during the reaction. Ni/Al2O3 pretreated by calcinations in air at 1173 K for 4h showed high stability due to the formation of a NiAl2O4 phase. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：778 / 782

页数：5

共 7 条

[1]

Amblard M, 1999, APPL CATAL B-ENVIRON, V22, pL159

[2] WET OXIDATION OF AMMONIA CATALYZED BY CERIUM-BASED COMPOSITE OXIDES [J].