LASER-ENHANCED H-2 CHEMISORPTION ON NI1-YO CATALYSTS FOR CO2 REDUCTION

Authors
IVANA E LACATUSU V CRAIU M CHELU M FENIC C DABU R STRATAN A NISTOR L DRAGULINESCU D CHIS I MARGINEAN P
Citation
E. Ivana et al., LASER-ENHANCED H-2 CHEMISORPTION ON NI1-YO CATALYSTS FOR CO2 REDUCTION, Applied surface science, 106, 1996, pp. 198-204
Citations number
23
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
106
Year of publication
1996
Pages
198 - 204
Database
ISI
SICI code
0169-4332(1996)106:<198:LHCONC>2.0.ZU;2-7
Abstract
The H-2 adsorption on Ni1-yO (y is the bulk stoichiometry deviation) s amples, obtained by Ni(OH)(2) calcination at 450 degrees C, 900 degree s C and 1200 degrees C, is investigated by the temperature programmed desorption (TPD) method.Two types of specific sites fur H-2 chemisorpt ion are identified on the surface of the NiO450 sample. The H-2 adsorp tions are associated with surface excess oxygen (over equilibrium). Th e UV laser radiation strongly influences the H-2 adsorption on the hig hly defective surface of the NiO450 sample (over equilibrium). The rea ctivity with hydrogen decreases as the stoichiometry rises (NiO900 and NiO1200 samples).