US 5,856,365 AGranted

Process for the preparation of a catalyst useful for the conversion of synthesis gas

AssigneesAgip Petroli S.p.A., Institut Francais du Petrole

InventorsRoberto Zennaro, Andrea Gusso, Mario Gabriele Clerici

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Abstract

Process for the preparation of a catalyst including an inert support, cobalt, ruthenium and a third element selected from scandium and yttrium, comprising at least the following steps: 1) Preparation of a first catalytic precursor (A) containing cobalt and the inert support: subsequent calcination, reduction and passivation; 2) Preparation of a second catalytic precursor (B) containing cobalt, ruthenium and the inert support, by means of the deposition of ruthenium on the first catalytic support (A): subsequent calcination, reduction and passivation 3) Preparation of the final catalyst by means of the deposition of an element selected from scandium and yttrium on the catalytic precursor (B); subsequent calcination, reduction and passivation.

Claims6

Dependent claims

A process for the preparation of a catalyst useful for the conversion of synthesis gas consisting essentially of an inert support selected from at least one oxide of least one element selected from the group consisting of Si, Ti, Al, Zr, Zn, Mg, Sn and, in the form of element s or in the form of oxides, a major amount of cobalt, a minor amount of ruthenium, and of a third element selected from the group consisting of scandium and yttrium, comprising the following steps:

(1) preparing a first catalytic precursor (A) containing cobalt and at least part of an inert support, by depositing cobalt on the inert support, and subsequently calcinating, reducing, and passivating the inert support containing cobalt;
(2) preparing a second catalytic precursor (B) containing cobalt, ruthenium, and at least part of an inert support, by depositing ruthenium on the first catalytic support (A), and subsequently calcinating, reducing, and passivating the inert support containing cobalt and ruthenium;
(3) preparing a final catalyst by depositing an element selected from the group consisting of scandium and yttrium on the catalytic precursor (B), and subsequently calcinating, reducing, and passivating the inert support containing cobalt, ruthenium, and the third element.

Dependencies are inferred from the claim text.