Reversible hydrogen adsorption on MoS sub 2 studied by temperature-programmed desorption and temperature-programmed reduction

The adsorption and desorption of hydrogen on MoS{sub 2} were studied using a combination of temperature-programmed desorption (TPD) and temperature-programmed reduction (TPR) with a control of the maximum temperature. Reversible hydrogen adsorption was observed in the temperature range of 375-500 K....

Full description

Saved in:
Bibliographic Details
Published in:Journal of catalysis 1992-10, Vol.137:2
Main Authors: Li, X.S., Xin, Q., Guo, X.X., Grange, P., Delmon, B.
Format: Article
Language:English
Subjects:
01 COAL, LIGNITE, AND PEAT
010402 - Coal, Lignite, & Peat- Purification & Upgrading
02 PETROLEUM
020400 - Petroleum- Processing
400201 - Chemical & Physicochemical Properties
ADSORPTION
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESORPTION
DESULFURIZATION
ELEMENTS
HYDROGEN
HYDROGENATION
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NONMETALS
REDUCTION
REFRACTORY METAL COMPOUNDS
SORPTION
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
TEMPERATURE CONTROL
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENT COMPOUNDS
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The adsorption and desorption of hydrogen on MoS{sub 2} were studied using a combination of temperature-programmed desorption (TPD) and temperature-programmed reduction (TPR) with a control of the maximum temperature. Reversible hydrogen adsorption was observed in the temperature range of 375-500 K. MoS{sub 2} samples reduced in hydrogen at different temperatures behaved distinctively towards reversible hydrogen adsorption. The amount of the reversible hydrogen adsorption decreased when the sample was reduced in hydrogen at the medium temperature, reversible hydrogen adsorption almost disappeared. In the TPR pattern, a reverse peak corresponding to hydrogen desorption was observed in the 500-673 K range. Based on these facts, the nature of the reversible hydrogen is discussed. The dependence of the reversible hydrogen adsorption on surface structure is also discussed.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(92)90166-F