CA1062227A

CA1062227A - Hydrocarbon conversion process and method of preparing a catalytic composite for use therein

Info

Publication number: CA1062227A
Application number: CA233,132A
Authority: CA
Inventors: Edward Michalko
Original assignee: UOP LLC
Current assignee: Honeywell UOP LLC
Priority date: 1974-08-09
Filing date: 1975-08-08
Publication date: 1979-09-11
Also published as: ZA754661B

Abstract

ABSTRACT OF THE DISCLOSURE

A crystalline aluminosilicate is commingled with a soluble partial hydrolysis product of aluminium sulphate after which the hydrolysis is completed. The mixture is aged, washed free of soluble matter, and dried and calcined to yield a catalytic composite comprising said crystalline aluminosilicate dispersed in alumina. A Group VIB metal component and a Group VIII metal component are added to the composite and the result-ing catalyst is used in a hydrocarbon conversion process.

Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A method of manufacturing a catalytic composite which comprises:
(a) admixing ammonium hydroxide and aluminum sulphate in aqueous media in a ratio to effect a soluble partial hydrolysis product of said aluminum sulphate;
(b) commingling a crystalline aluminosilicate with the partial hydrolysis product;
(c) thereafter effecting complete hydrolysis of said aluminum sulphate and aging the resulting mixture for a period of from 2 to 20 hours;
(d) separating and washing the solids product free of soluble matter; and (e) drying the washed product to yield a catalytic composite comprising said crystalline aluminosilicate dispersed in alumina.

2. The method of claim 1 characterised in that said partial hydrolysis product has a pH of from about 3.8 to about 4.2.

3. The method of claim 1 characterised in that said partial hydrolysis product is prepared by admixing ammonium hydroxide and aluminum sulphate in a mole ratio of about 4 to 1.

4. The method of any of claims 1 to 3 characterised in that said crystalline aluminosilicate is a faujasite.

5. The method of any of claims 1 to 3 characterised in that said crystalline aluminosilicate is a faujasite with a silica-alumina ratio of at least 3.

6. The method of any of claims 1 to 3 characterised in that said crystalline aluminosilicate is commingled with said partial hydrolysis product in an amount to provide from 5 to 95 wt.
% of the final product.

7. The method of any of claims 1 to 3 characterised in that said crystalline aluminosilicate is base-exchanged with cations selected from magnesium, calcium, barium, cerium, lanthanum, p???eodymium, neodymium, illinium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, scandium, yttrium and lutecium and hydrogen or hydrogen precursors.

8. The method of any of claims 1 to 3 characterised in that said crystalline aluminosilicate is base-exchanged with rare earth cations to provide from 1 to 10 wt. % rare earth metals based on the weight of the final product.

9. The method of any of claims 1 to 3 characterised in that said mixture is aged for a period of from 2 to 20 hours at a temperature of from 29° to 149°C.

10. A process for converting a hydrocarbon charge stock into lower boiling, normally liquid hydrocarbon products which comprises:
(a) admixing ammonium hydroxide and aluminum sulphate in aqueous media in a ratio to effect a soluble partial hydrolysis product of said aluminum sulphate;
(b) commingling a crystalline aluminosilicate with the partial hydrolysis product;
(e) thereafter effecting complete hydrolysis of said aluminum sulphate and the resulting mixture for a period of from 2 to 20 hours;
(d) separating and washing the solids product free of soluble matter, (e) drying the washed product to yield a catalytic composite comprising said crystalline aluminosilicate dispersed in alumina; and (f) reacting said charge stock and hydrogen at hydrocracking conditions in contact with the catalytic composite obtained in step (e).

11. A process for converting a hydrocarbon charge stock into lower boiling, normally liquid hydrocarbon products which comprises reacting said charge stock and hydrogen at hydrocracking conditions in contact with a catalyst comprising an alumina-c? talline aluminosilicate composite, a Group VIB metal component and a Group VIII metal component, characterised in that said catalyst is prepared by the following method:
(A) repeating steps (a) through (d) of claim 1;
(B) impregnating the solids product with a metal of Group VIB and a metal of Group VIII with sufficient Group VIB
metal component to provide from 6 to 20 wt. % of the final catalyst product, and with sufficient Group VIII metal component to provide from 0.1 to 10 wt. % of the final catalyst product; and (C) calcining the resulting composite at a temperature of from 593° to 927°C.

12. The process of claim 11 characterised in that said hydrocracking conditions include a temperature of from 260°
to 538°C., a pressure of from 35 to 205 atmospheres, a hydrocarbon charge rate of from 0.25 to 10 liquid hourly space velocity, and a ratio of hydrogen to hydrocarbon charge stock of from 356 to 2,673 V/V.

13. The process of claim 11 or 12 characterised in that following said calcining step, the catalyst is reduced in the presence of hydrogen and is then sulphided in the presence of a sulphur-containing medium.