Intevep, S.a.

Zaida C Hernandez

Julia T Guerra

Magdalena M Ramirez De Agudelo

Maria Magdalena Ramirez De Agudelo

Wolfgang J Garcia

Jose C Gonzalez

Leonardo Escalante

Raul V Navarro

M M Ramirez-Corredores

Douglaines L Marcano

Alejandro Granado

An adsorbent for selective removal of sulfur from a hydrocarbon feedstock includes a matrix material having a surface area of at least about 400 m/g and a surface acidity of less than about 0.20 &#x3bc;mol/m; and a metal phase dispersed through the matrix, the metal phase being selective to reversible adsorption of sulfur. A process for using and method for making the adsorbent are also provided.

Selective sulfur removal from hydrocarbon streams by absorption

Process for preparation of ethers in a catalytic distillation column

An adsorption/desorption process for selectively removing nitriles from a hydrocarbon feedstock includes the steps of: (a) providing a hydrocarbon feedstock having a nitrile content of less than or equal to about 400 ppm; (b) providing an adsorbent for selective removal of nitrile from a hydrocarbon feedstock comprising a substantially homogeneous mixture of a cationic nonacidic zeolite and an inorganic oxide matrix, the zeolite having an accessibility index of between about 0.1 to about 0.4; (c) contacting the feedstock and the adsorbent at nitrile adsorption conditions whereby at least about 80% of the nitrile content is adsorbed by the adsorbent during contact with at least about 200 volumes of the feedstock per volume of the adsorbent so as to provide a used adsorbent having nitrile molecules adsorbed thereon; and (d) contacting the used adsorbent with a desorbent at desorption conditions so as to remove the nitrile molecules and provide a renewed adsorbent.

Nitrile selective removal process

A process is provided for simultaneous selective hydrogenation of diolefins and nitriles from a hydrocarbon feedstock, wherein hydrogenation is carried out using a catalyst in one reactor zone while partially deactivated catalyst in another reactor zone is regenerated.

Process for the simultaneous selective hydrogenation of diolefins and

A catalyst useful for the simultaneous and selective hydrogenation of diolefins and nitriles present in a hydrocarbon feedstock. The support material is preferably selected from the group consisting of an inorganic oxide-zeolite composite, carbon and zeolite. A catalytically active phase is deposited on the support material. The catalytically active metal phase is selected from the group consisting of partially reduced Group IB metals and completely reduced Group VIII metals. The catalytically active metal phase is present in an amount of .gtoreq.0.03 wt %. A process using the catalyst involves counter current flow of feedstock and hydrogen in the presence of the catalyst.

Growing community of inventors

Caracas, Venezuela

Zaida C Hernandez