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Title: Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts

Abstract

Industrial solid wastes (fly ash and red mud, a by-product of the aluminium industry) have been employed as supports for preparation of Ru-based catalysts. Physical and chemical treatments on red mud were conducted and these modified supports were also used for preparation of Ru-based catalysts. Those Ru catalysts were characterized by various techniques such as N2 adsorption, H{sub 2} adsorption, XRD, XPS, and temperature-programmed reduction (TPR), and were then tested for catalytic ammonia decomposition to hydrogen. It was found that red-mud-supported Ru catalyst exhibits higher ammonia conversion and hydrogen production than fly-ash-supported catalyst. Heat and chemical treatments of the red mud greatly improve the catalytic activity. Moreover, a combination of acid and heat treatments produces the highest catalytic conversion of ammonia. 35 refs., 4 figs., 4 tabs.

Authors:
; ; ; ; ;  [1]
  1. University of Queensland, St Lucia, Qld. (Australia). ARC Functional Nanomaterials
Publication Date:
OSTI Identifier:
20905843
Resource Type:
Journal Article
Resource Relation:
Journal Name: Environmental Science and Technology; Journal Volume: 41; Journal Issue: 10; Other Information: johnz@cheque.uq.edu.au
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; RUTHENIUM; CATALYSTS; AMMONIA; DECOMPOSITION; FLY ASH; CATALYST SUPPORTS; HYDROGEN; COAL; WASTE PRODUCT UTILIZATION; ALUMINIUM OXIDES; BY-PRODUCTS; CATALYTIC EFFECTS; ADSORPTION; CALCINATION; HEAT TREATMENTS; PH VALUE; SURFACE PROPERTIES; X-RAY DIFFRACTION; SILICA; HYDROGEN PRODUCTION

Citation Formats

Pei Fang Ng, Li Li, Shaobin Wang, Zhonghua Zhu, Gaoqing Lu, and Zifeng Yan. Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts. United States: N. p., 2007. Web.
Pei Fang Ng, Li Li, Shaobin Wang, Zhonghua Zhu, Gaoqing Lu, & Zifeng Yan. Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts. United States.
Pei Fang Ng, Li Li, Shaobin Wang, Zhonghua Zhu, Gaoqing Lu, and Zifeng Yan. Tue . "Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts". United States. doi:.
@article{osti_20905843,
title = {Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts},
author = {Pei Fang Ng and Li Li and Shaobin Wang and Zhonghua Zhu and Gaoqing Lu and Zifeng Yan},
abstractNote = {Industrial solid wastes (fly ash and red mud, a by-product of the aluminium industry) have been employed as supports for preparation of Ru-based catalysts. Physical and chemical treatments on red mud were conducted and these modified supports were also used for preparation of Ru-based catalysts. Those Ru catalysts were characterized by various techniques such as N2 adsorption, H{sub 2} adsorption, XRD, XPS, and temperature-programmed reduction (TPR), and were then tested for catalytic ammonia decomposition to hydrogen. It was found that red-mud-supported Ru catalyst exhibits higher ammonia conversion and hydrogen production than fly-ash-supported catalyst. Heat and chemical treatments of the red mud greatly improve the catalytic activity. Moreover, a combination of acid and heat treatments produces the highest catalytic conversion of ammonia. 35 refs., 4 figs., 4 tabs.},
doi = {},
journal = {Environmental Science and Technology},
number = 10,
volume = 41,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}