Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Catherine Verdon

Patrick Chaumette

Philippe Courty

Denis Uzio

Fabienne Le Peltier

Cecile Thomazeau

Raymond F Szymanski

Blaise Didillon

Germain J Martino

Daniel Durand

Bogdan Harbuzaru

Lars Fischer

Carine Petit-Clair

Serge Leporq

Daniel Cruypelinck

Magalie Roy

Gilles Berhault

Lois Sorbier

Loïc Sorbier

Gilles Behault

The invention concerns a catalyst comprising a porous support, palladium, at least one metal selected from the group constituted by alkalis and alkaline-earths, in which: The invention also concerns the preparation of the catalyst and its use in selective hydrogenation.

Catalyst comprising palladium and its application in selective hydrogenation

The invention concerns a process for preparing metallic nanoparticles with an anisotropic nature by using two different reducing agents, preferably with different reducing powers, on a source of a metal selected from columns 8, 9 or 10 of the periodic table of the elements.

Process for synthesizing anisotropic metallic nanoparticles using two different reducing agents

The invention relates to a synthesis process for hydrocarbons using a mixture containing carbon monoxide and hydrogen, called Fischer-Tropsch synthesis in the presence of a catalyst comprising a support, at least one group VIII metal said process being characterized in that at least 80% of the group VIII metallic particles of the catalyst have a size comprised between D&minus;(D.0.2) and D&plus;(D.0.2), where D represents the average size of the metallic particles. The process can be used in a fixed-bed reactor of the catalyst or in a reactor operating in liquid phase of the catalyst.

Fischer-Tropsch synthesis process in the presence of a catalyst the metallic particles of which have a controlled size

The invention relates to a process for the conversion of synthesis gases into a mixture of essentially linear and saturated hydrocarbons, characterized by the use of a catalyst prepared by a gelling procedure, incorporating cobalt, copper and ruthenium, the cobalt, copper and ruthenium being dispersed on a support having at least one oxide of a metal chosen from within the group formed by silica and alumina, the cobalt content, expressed by cobalt weight based on the catalyst weight, being between 1 and 60% by weight, the ruthenium content, expressed by ruthenium weight based on the cobalt weight, being between 0.1 and 20%, and the copper weight, expressed by copper weight based on the cobalt weight, being between 0.1 and 10%.

Cobalt-based catalyst and process for converting synthesis gas into

A process for obtaining a tertiary olefin, e.g. isobutylene in a very pure state by decomposing the corresponding ether, e.g. methyl tert. butyl ether, in the presence of a catalyst constituted by silica, modified by the addition of at least one element or compound of an element preferably chosen from the group constituted by rubidium, cesium, magnesium, calcium, strontium, barium, gallium, lanthanum, cerium, praseodymium, neodymium and uranium and optionally by the addition of at least one element or compound of an element chosen from the group constituted by aluminium, titanium and zirconium.

Process for obtaining at least one tertiary olefin by decomposition of

The present invention relates to a process for preparing a precursor of a catalyst containing copper, aluminum and zinc.

Process for preparing precursors of catalysts containing copper,

The present invention relates to a process for preparing a precursor of a catalyst containing copper, aluminum and zinc. This precursor is formed by the mixing of two ternary precursors, at different stages of their manufacturing, these two ternary precursors being different from one another in their metallic stoichiometry (atomic ratios between Cu, Zn and Al), in their crystalographic structure and in their elemental morphology. The catalyst obtained from this precursor can be used in particular for the synthesis of methanol.

A process for manufacturing a mixture of saturated primary alcohols by reacting carbon oxides with hydrogen in the presence of a catalyst formed essentially of the following elements: copper, cobalt, zinc, at least one metal A selected from the group consisting of alkali and alkaline earth metals and optionally zirconium and/or at least one metal M selected from the group formed of scandium, yttrium and rare earth metals and/or at least one metal N selected from group VIII noble metals, the proportion by weight of each metal element being: copper: 15-55%, colbalt: 5-25%, zinc: 15-70%, metal A: 0.01-5%, zinconium: 0-55%, metal M: 0-20%, metal N: 0-1%, the total amount by weight of zinc and zirconium in percent by weight of all the metals being from 15 to 70% and the atomic ratios between these metals being: Cu/Co: 0.2:1 to 5:1 and Zn/(Zn+Zr): 0.05:1 to 1:1 and (Zn+Zr)/Co: 0.5:1 to 8:1. The catalyst may be prepared by complexing or by coprecipitating catalytic elements.

Growing community of inventors

Rueil-Malmaison, France

Catherine Verdon