Regeneration of Catalysts WOx/Al2O3 and MoOx/Al2O3 used during skeletal isomerization of 1-butene

V. M. BENITEZ; N. S. FÍGOLI

CATALYSIS COMMUNICATIONS

Elsevier

Lugar: Amsterdan; Año: 2003 vol. 3 p. 571 - 577

1566-7367

The regeneration of W and Mo supported on c and a–hAl2O3 catalysts used during 1-butene skeletal isomerization, was studied. The regenerated catalysts were characterized by several techniques and the results compared with those of the fresh catalysts. It was found that it is necessary a 15 h at 465 ºC treatment to completely eliminate coke on W/gA and Mo/gA, both catalysts recovering the initial activity and selectivity. Using this procedure, the properties of the catalysts were not modified. The same treatment did not allow the activity recovery in W/aq-A, due to differences in the nature of coke, that is aromatic or pregraphitic, and could not be totally removed.