Catalytic ammonia decomposition over industrial-waste-supported Ru catalysts

Journal Article · Tue May 15 00:00:00 EDT 2007 · Environmental Science and Technology

OSTI ID:20905843

Ng, Pei Fang; Li, Li; Wang, Shaobin; Zhu, Zhonghua; Lu, Gaoqing; Yan, Zifeng ^[1]

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1. University of Queensland, St Lucia, Qld. (Australia). ARC Functional Nanomaterials

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.

• OSTI ID: 20905843
• Journal Information: Environmental Science and Technology, Vol. 41, Issue 10; Other Information: [e-mail]; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

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