Eurecat S.a.

Sharath Kirumakki

Pierre Dufresne

Pauline Galliou

Mathieu Baffert

Mickaël Bremaud

Mickael Bremaud

The invention provides a process for limiting self heating of activated particle catalysts wherein the catalyst particles are placed in motion inside a hot gas flow that passes through them and a liquid composition containing one or several film forming polymer(s) is pulverized onto the particles in motion until a protective layer is obtained on the surface of said particles containing said film forming polymer and having an average thickness of less than or equal to 20 &#x3bc;m. The invention also provides the use of this process to reduce the quantities of toxic gases that may be emitted by the activated catalysts, as well as an activated catalyst for the hydroconversion of hydrocarbons covered with a continuous protective layer that are obtained by this process.

Process for limiting self heating of activated catalysts

A process for ex-situ treatment of a catalyst that contains at least one hydrogenating phase, and at least one amorphous silica-alumina or a zeolite that contains acid. The process includes: This treatment allows a rapid, effective start-up on the hydrocracking unit.

Process for passivation by a nitrogen-containing compound of a zeolitic catalyst, in particular a hydrocracking catalyst

The present invention relates to a method for preparing a supported metal catalyst for the selective hydrogenation of unsaturated hydrocarbons, characterized in that it comprises the following steps: The present invention also relates to the supported metal catalyst obtained by this process, and the use thereof in hydrogenation reactions of unsaturated hydrocarbons, in particular for the selective hydrogenation of light olefins.

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Friendswood, TX, United States of America

Sharath Kirumakki