Exxonmobil Research and Engineering Company

Patricia A Bielenberg

Stuart Leon Soled

Joseph Ernest Baumgartner

Christine Esther Kliewer

El-Mekki El-Malki

David A Purta

Heather A Elsen

Marc A Portnoff

Faiz Pourarian

Margaret A Nasta

Jingfeng Zhang

The present invention relates to new processes for regenerating oxidized interstitial metal hydride containing catalysts prior to the use of such catalysts in a hydroprocessing process. Interstitial metal hydride containing catalysts are easily oxidized in the environment and once oxidized, the hydroprocessing activity of the interstitial metal hydrides is most often severely diminished and this lost activity due to oxidization of the iMeH is not susceptible to recovery under hydroprocessing conditions. As a result, these catalysts in the present art require considerable special handling in inert environments all through processes from fabrication, shipping, loading, use, and maintenance of the catalyst systems to protect the activity of the interstitial metal hydride components. The present invention embodies a process regenerating oxidized interstitial metal hydride containing catalysts prior to their use in a hydroprocessing environment, thereby eliminating the requirement for maintaining the interstitial metal hydride containing catalysts in an inert environment, and allowing the handling of such catalysts in an oxidized condition prior to use.

Interstitial metal hydride catalyst activity regeneration process

A method is provided for preparing a supported cobalt-containing catalyst having substantially homogeneously dispersed, small cobalt crystallites. The method comprises depositing cobalt nitrate on a support and then subjecting the support to a two-step decomposition protocol. In the first step, the support is heated in an oxygen-containing, substantially water-free atmosphere to about 160&#xb0; C. to form an intermediate decomposition product. This intermediate product is then or hydrolyzed and reduced, or hydrolyzed, calcined and reduced.

Preparation of high activity cobalt catalysts, the catalysts and their use

A method is provided for preparing a supported cobalt-containing catalyst having substantially homogenously dispersed, small cobalt crystallites. The method comprises depositing cobalt nitrate on a support and then heating the support in an oxygen-containing, substantially water-free atmosphere to about 160&#xb0; C. to form an intermediate decomposition product. This intermediate decomposition product is then calcined and reduced.

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Easton, PA, United States of America

Patricia A Bielenberg