Roberto Scattolin

Giuseppe Bellussi

Angela Carati

Marcello Marella

Michele Tomaselli

Stefano Zanardi

Maria Federica Gagliardi

Alberto Renato De Angelis

Paolo Pollesel

New sulfided metal catalysts are described, containing a metal X selected from Ni, Co and mixtures thereof, a metal Y selected from Mo, W and mixtures thereof, an element Z selected from Si, Al and mixtures thereof, and possibly an organic residue, obtained by the sulfidation of mixed oxide precursors, also new, having general formula (A)XYZOC&#x2003;&#x2003;(A) Said catalysts can be used as hydrotreating catalysts.

Mixed oxides of transition metals, hydrotreatment catalysts obtained therefrom, and preparation process comprising sol-gel processes

New sulfided metal catalysts are described, containing a metal X selected from Ni, Co and mixtures thereof, a metal Y selected from Mo, W and mixtures thereof, an element Z selected from Si, Al and mixtures thereof, and possibly an organic residue, obtained by the sulfidation of mixed oxide precursors, also new, having general formula (A) XYZO.pC (A) possibly shaped without a binder, or by sulfidation of mixed oxides having formula (A), in shaped form with a binder, wherein X is selected from Ni, Co and mixtures thereof, Y is selected from Mo, W and mixtures thereof, Z is selected from Si, Al and mixtures thereof, O is oxygen, C is selected from: a nitrogenated compound N, an organic residue deriving from the partial calcination of the nitrogenated compound N, said nitrogenated compound N, when present, being selected from: a) an alkyl ammonium hydroxide having formula (I) RRRRNOH (I) wherein the groups R-R, the same or different, are aliphatic groups containing from 1 to 7 carbon atoms, b) an amine having formula (II) RRRN (II) wherein Ris a linear, branched or cyclic alkyl, containing from 4 to 12 carbon atoms, and Rand R, the same or different, are selected from H and a linear, branched or cyclic alkyl, containing from 4 to 12 carbon atoms, said alkyl being equal to or different from R, a, b, c, d are the number of moles of the elements X, Y, Z, O, respectively, p is the weight percentage of C with respect to the total weight of the precursor having formula (A), a, b, c, d are higher than 0 a/b is higher than or equal to 0.3 and lower than or equal to 2, (a+b)/c is higher than or equal to 0.3 and lower than or equal to 10, preferably varying from 0.8 to 10 d=(2a+6b+Hc)/2 wherein H=4 when Z=Si H=3 when Z=Al and p is higher than or equal to 0 and lower than or equal to 40%. Said catalysts can be used as hydrotreating catalysts.

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Martellago, Italy

Roberto Scattolin