Effect of Pt/Al2O3 catalyst preparation conditions upon its activity in nitric oxide reduction

 
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1995 (EN)

Effect of Pt/Al2O3 catalyst preparation conditions upon its activity in nitric oxide reduction (EN)

Grigoropoulou, HP (EN)
Philippopoulos, CJ (EN)
Svoronos, DG (EN)

A series of platinum catalysts supported on γ-alumina and prepared by using a wet impregnation procedure were characterized by hydrogen temperature-programmed desorption and steady-state CO-NO reaction tests. The impregnant pH was the crucial variable in the generation of five catalysts of 0.75-0.87% Pt load at initial pH from 2.15 to 4.65. The impregnant pH showed a clear impact on both hydrogen uptake and catalytic performance. The catalysts prepared under acidic conditions demonstrated a higher catalytic activity than those prepared under basic conditions, while hydrogen adsorption levels were of the same order of magnitude. Activation energies for the CO-NO reaction were found to depend on impregnant pH. © 1995 Elsevier Science B.V. All rights reserved. (EN)

journalArticle (EN)

Nitric oxide reduction (EN)
INCIPIENT WETNESS (EN)
METAL DISTRIBUTIONS (EN)
SUPPORTS (EN)
DESIGN PARAMETERS (EN)
ADSORPTION (EN)
Chemistry, Physical (EN)
POROUS CATALYSTS (EN)
Platinum/alumina (EN)
Engineering, Chemical (EN)
NICKEL-CATALYSTS (EN)
Engineering, Environmental (EN)
TEMPERATURE-PROGRAMMED DESORPTION (EN)
Catalyst preparation (acidity) (EN)


Applied Catalysis B, Environmental (EN)

English

1995 (EN)

4 (EN)
5 (EN)
ISI:A1995QU24000005 (EN)
328 (EN)
0926-3373 (EN)
319 (EN)
10.1016/0926-3373(94)00050-6 (EN)

ELSEVIER SCIENCE BV (EN)




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