INTEQUI   20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
ACTIVITY AND STABILITY OF A CuO/CeO2 CATALYST IN
Autor/es:
FRANCO TINELLI; OSVALDO F. GORRIZ; LUIS A. ARRUA; MARIA C ABELLOCRISTINA ABELLO
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. xx p. 3 - 27
ISSN:
0926-860X
Resumen:
The activity and stability of copper supported on cerium oxide have been
investigated in the selective production of hydrogen via methanol steam
reforming. The catalytic runs were carried out under two different regimes:
continuous and discontinuous. The main products were H2 and CO2 and a minor
amount of CO (selectivity to CO was around 6% at 300°C). In all the cases, the
catalyst was initially very active and the activity was lost with the time on stream.
The catalyst under a continuous regime was easily regenerated by air at 400°C.
Under a discontinous mode, the catalyst was self-activated after the stop operation
and the initial conversion was almost recovered. The deactivation could be mainly
attributed to the adsorption of carbonaceous species which were easily desorbed
under an inert flow or by burning with air. The pre-reduction of catalyst should be
avoided to reach a higher stability.