Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Dominique Le Pennec

Bruno Delfort

Julien Grandjean

Dominique Commereuc

Thierry Huard

Yves Chauvin

Aurelie Wender

H&eacute;l&egrave;ne Olivier-Bourbigou

Armelle Nigon

Fabien Porcheron

Gérard Hillion

Laetitia Giraudon

Aurélie Wender

The invention relates to novel nitrogen compounds belonging to the family of tertiary diamines of general formula (I) below, wherein R is an alkanediyl radical &#x2014;(CH)n- with n=2, 3, 4, 5 or 6. The compound according to the invention is for example N,N,N',N&#x2032;-(tetramethyl)-1,6-diamino-2,5-hexanediol or N,N,N&#x2032;,N&#x2032;-(tetramethyl)-1,8-diamino-2,7-octanediol. The invention also relates to the method for preparing them and to their use for removing acid compounds contained in a gaseous effluent.

Beta-hydroxylated tertiary diamines, a process for their synthesis and their use for eliminating acid compounds a gaseous effluent

The invention relates to an absorbent solution for absorbing acid compounds, such as hydrogen sulfide and carbon dioxide, in a gaseous effluent, containing water and a mixture of amines comprising 1,2-bis-(2-dimethylaminoethoxy)-ethane and 2-[2-(2-dimethylaminoethoxy)-ethoxy]-ethanol, of respective formulas (I) and (II) below, and to a method of removing acid compounds contained in a gaseous effluent using this solution. 

Absorbent solution containing a mixture of 1,2-bis-(2-dimethylaminoethoxy)-ethane and of 2-[2-(2-dimethylaminoethoxy)-ethoxy]-ethanol, and method of removing acid compounds from a gaseous effluent

An absorbent solution is provided for removing acid compounds contained in a gaseous effluent and a method of removing acid compounds contained in a gaseous effluent contacts the gaseous effluent with the absorbent solution. The absorbent solution includes at least one of the following two nitrogen compounds belonging to the family of tertiary diamines:  and water.

Absorbent solution based on beta-hydroxylated tertiary diamines and method of removing acid compounds from a gaseous effluent

The invention relates to a method of selectively removing hydrogen sulfide HS from a gaseous effluent comprising at least HS and CO, wherein a stage of selective absorption of hydrogen sulfide over COis carried out by contacting said effluent with a solution comprising (a) water and (b) at least the following diamine: and wherein the absorption selectivity is controlled by adding (c) a viscosifying compound to the absorbent solution.

Method for selective absorption of hydrogen sulfide from a gaseous effluent by a 1,2-bis(2-dimethylaminoethoxy)ethane-based absorbent solution comprising a viscosifying agent

The absorbent solution for removing acidic compounds contained in a gas effluent comprises water and at least one amine that is selected from among tertiary monoalkanolamines that contain an etheric function and belong to the 3-alcoxypropylamine family having general formula (A). The method for removing the acidic compounds contained in a gas effluent involves placing a gas effluentinto the column Ctogether with the absorbent solution

Absorbent tertiary monoalkanolamine solution belonging to the 3-alcoxypropylamine family, and method for removing acidic compounds contained in a gas effluent

The method for eliminating acidic compounds contained in a gaseous effluent consists of placing into contact, in column C, a gaseous effluentwith an absorbent solutioncomprising an aqueous solution of one or a plurality of dihydroxyalkylamines having one of the formulas (I) and (II).

Process for removing acidic compounds from a gaseous effluent with an absorbent solution based on dihydroxyalkylamines bearing severe steric hindrance of the nitrogen atom

The method of removing acid compounds contained in a gaseous effluent consists in contacting in column C1 a gaseous effluent with an absorbent solution 4 made up of an aqueous solution of one or more diamines belonging to the bis(amino-3-propyl)ether or (amino-2-ethyl)-(amino-3-propyl)ether family.

Method for eliminating acid compounds from a gaseous effluent with an absorbent solution made from bis(amino-3-propyl)ethers

The invention relates to an improved method for synthesizing bis[3-(N,N-dialkylamino)propyl]ethers from acrylonitrile, comprising the following reactions:

Method for synthesising bis[3-(N,N-dialkylamino)propyl]ethers

A process that employs a heterogeneous catalyst comprising a zinc aluminate mixed oxide and having the following formula:ZnAlO, xZnO, yAlOin which x and y each represent a number in the range 0 to 2, and in which the zinc aluminate is more particularly of the spinel type, makes it possible, by means of C1 to C5 monoalcohols, to:

Process for the alcoholysis of acid oils of vegetable or animal origin

A catalytic composition comprising at least one nickel compound mixed or complexed with at least one tertiary phosphine or a phosphite carrying a functional group, at least partly dissolved in a non-aqueous medium with an ionic nature resulting from bringing at least one aluminum halide into contact with at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, is useful for dimerizing, co-dimerizing and oligomerizing olefins. Functional groups include, but are not limited to, an amine, a cyclic amine, a nitrogen-containing heterocycle, an ester, an acid, an alcohol, a quaternary ammonium, a quaternary phosphonium, a sulfonium, a sulfonate or a phosphonate group.

Catalytic composition for dimerizing, co-dimerizing and oligomerizing olefins

In order to carry out selective dimerization of propylene principally into branched dimers, a catalytic composition resulting from at least partly dissolving a nickel compound mixed or complexed with a tertiary phosphine carrying a functional group is used in a medium resulting from mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one aluminum halide and optionally at least one organometallic aluminum compound.

Process for selective dimerization of propylene principally into branched dimers

A catalyst composition is manufactured by admixing a hydrocarbyl aluminum halide of a nickel compound of the formula (R.sub.1 COO)(R.sub.2 COO)Ni, where R.sub.1 is hydrocarbyl with at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms. Olefins such as ethylene, propylene and butenes can be oligomerized, for example, dimerized and trimerized, with the above catalyst composition.

Oligomerization catalyst and process

A catalyst composition is manufactured by admixing a hydrocarbyl aluminum halide with a nickel compound of the formula (R.sub.1 COO) (R.sub.2 COO) Ni, wherein R.sub.1 is hydrocarbyl of at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms. Olefins such as ethylene, propylene and butenes can be oligomerized, for example, dimerized and trimerized, with the above catalyst composition.

Nickel compounds of the formula (R.sub.1 COO) (R.sub.2 COO) Ni, where R.sub.1 is hydrocarbyl of at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms, are manufactured from the corresponding acids R.sub.1 COOH and R.sub.2 COOH or salts thereof. The resultant nickel compounds are soluble in hydrocarbons and can be used in admixture with organoaluminum compounds as constituents of catalytic compositions; olefins can be oligomerized, for example, dimerized and trimerized, therewith.

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Orgerus, France

Dominique Le Pennec