Methane steam reforming activity, stability and characterization of nickel supported catalysts

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5502549

Al-Ubaid, A S

In this thesis the steam reforming of methane catalyzed by nickel supported on various supports was investigated. The supports used in this work differ both in structural and surface nature, and they were selected on the basis of acidity and reactivity towards nickel for thermal stabilization. The kinetics studies were carried out using a differential reactor and the activity studies were carried out in a fixed bed reactor. The effects of various parameters (loading technique, cation present, steam methane ratio, steaming, and nickel loading) were investigated. Characterization was done with H/sub 2/-chemisorption measurements, BET area measurements, IR, XRD, and XPS; these results were used to identify the causes of deactivation. The Ni/SiO/sub 2/ catalysts suffered fast permanent deactivation at high steam methane ratio reaction. Characterization results suggest that deactivation is due to oxidation, sintering, and formation of a nickel hydrosilicate. The Ni supported on Y-zeolite catalysts also deactivated at high steam methane ratio but the deactivation was partially reversible. The characterization results identified oxidation and sintering as responsible for deactivation.

• Research Organization: Notre Dame Univ., IN (USA)
• OSTI ID: 5502549
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKANES
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
ELEMENTS
FABRICATION
HYDROCARBONS
HYDROGEN IONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
KINETICS
MATERIALS
METALS
METHANE
MINERALS
NICKEL
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SILICON COMPOUNDS
SILICON OXIDES
SINTERING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZEOLITES