Hydrocracking catalyst
AssigneeUnion Carbide Corporation
InventorsDonald F. Best, Gary N. Long, Regis J. Pellet, Jule A. Rabo, Edward T. Wolynic
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Abstract
Process for hydrocracking a crude oil feed, hydrocracking catalyst employed therein and the process for its preparation. The instant invention employs new aluminosilicate zeolite catalysts derived from a new zeolites denominated "LZ-210" which provide hydrocracking catalysts which demonstrate improved activity in first and/or second stage operation.
Claims58
The process for the preparation of a hydrocracking catalyst comprising treating a zeolitic aluminosilicate which has a mole ratio of oxides in the anhydrous state of
- (0.85-1.1) M.sub.2/n O:Al.sub.2 O.sub.3 ;
- xSiO.sub.2
- wherein M is a cation having a valence of "n";
- "x" has a value greater than 6.0 and equal to or less than 9.0, has an x-ray powder diffraction pattern having at least the d-spacings of Table A and has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra comprising:
- (a) treating the aluminosilicate by at least one of the following steps:
- (i) thermally treating the aluminosilicate at an effective temperature for an effective time;
- and (ii) treating the aluminosilicate with a solution containing at least one rare earth cation selected from the group consisting of Groups IIA and IIIA, cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof;
- with the proviso that each of the above steps may be carried out in any order for one or more times;
- and
- (b) providing an effective amount of at least one metal selected from the class consisting of Pt, Pd, Rh, Ru, Ni, W, Mo, Co, Ti, Cr and mixtures thereof.
The hydrocracking catalyst comprising a zeolitic aluminosilicate having a mole ratio of oxides in the dehydrated state of
- (0.85-1.1)M.sub.2/n O:Al.sub.2 O.sub.3 :xSiO.sub.2
- wherein M is a cation having a valence of "n";
- "x" has a value greater than 6.0 and equal to or less than 9.0;
- has an x-ray powder diffraction pattern having at least the d-spacings of Table A;
- has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra;
- wherein said zeolitic aluminosilicate has between about 5 ion-exchange percent and about 80 ion-exchange percent of the cations selected from the group consisting of Groups IIA, IIIA, cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and mixtures thereof, and between 0.05 and 30 percent by weight of at least one metal selected from the group consisting of Pt, Pd, Rh, Ru, Ni, W, Mo, Co, Ti, Cr and mixtures thereof.
A process for preparing a hydrocarbon conversion catalyst for conversion of a hydrocarbon feedstock under effective hydrocracking conditions in the presence of hydrogen to produce lower boiling hydrocarbons wherein the process comprises:
- (a) treating with an effective amount of at least one rare earth cation, a zeolitic aluminosilicate which has a mole ratio of oxides in the anhydrous state of
- (0.85-1.1)M.sub.2/n O:Al.sub.2 O.sub.3 :xSiO.sub.2
- wherein M is a cation having a valence of "n";
- "x" has a value greater than 6.0 and equal to or less than 9.0, has an X-ray powder diffraction pattern having at least the d-spacings of Table A and has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra;
- (b) thermally treating the product of step (a) at an effective temperature in the presence of an effective amount of steam;
- (c) ammonium-exchanging the product of step (b);
- and
- (d) providing the product of step (c) with an effective amount of at least one hydrogenation component selected from the group consisting of Pt, Pd, Rh, and Ru.
A hydrocracking catalyst for the conversion of a hydrocarbon feedstock under effective hydrocracking conditions in the presence of hydrogen to produce lower boiling hydrocarbons which is prepared by the following steps:
- (a) treating with an effective amount of at least one rare earth cation, a zeolitic aluminosilicate which has a mole ratio of oxides in the anhydrous state of
- (0.85-1.1)M.sub.2/n O:Al.sub.2 O.sub.3 :xSiO.sub.2
- wherein M is a cation having a valence of "n";
- "x" has a value greater than 6.0 and equal to or less than 9.0, has an X-ray powder diffraction pattern having at least the d-spacings of Table A and has extraneous silicon atoms in the crystal lattice in the form of framework SiO.sub.4 tetrahedra;
- (b) thermally treating the product of step (a) at an effective temperature in the presence of an effective amount of steam;
- (c) ammonium-exchanging the product of step (b);
- and
- (d) providing the product of step (c) with an effective amount of at least one hydrogenation component selected from the group consisting of Pt, Pd, Rh and Ru.
Dependencies are inferred from the claim text.