Institut Francais Du Pe'trole

Hubert Mimoun

Alain Robine

Robert Charpentier

Charles Cameron

Lucien Saussine

Serge Bonnaudet

Patrick Chaumette

Quang Dang Vu

Michel Roussel

Irenee Seree De Rochi

Do Thao

Jean P Laloz

Jean J Rouxel

Erick Daire

Jacques G De Luzinais

Process for producing olefins from natural gas, the natural gas (2) is mainly fractionated (1) into methane (3) and higher hydrocarbons (4), the latter being then mainly fractionated (17, 20) into propane (9) and ethane (7). The methane (3), admixed with oxygen (6), passes through an oxidation reactor (5), receives the ethane (7) and the obtained mixture passes through a pyrolysis reactor (8). The effluent coming out of reactor (8) receives the propane (9) and the obtained mixture passes through a pyrolysis reactor (10). A hydrocarbon flow comprising olefins (12), more particularly ethylene and propene, is recovered.

Process for producing olefins from natural gas

Process for producing olefins from natural gas. The natural gas is fractionated (1). The methane (3) mixed with oxygen (6) crosses the oxidizing reactor (5), receives the C.sub.2 + hydrocarbons (7) and the mixture crosses the pyrolysis reactor (8). A hydrocarbons flow containing olefins (10) is collected.

The invention concerns a process for the oxidative conversion of methane or natural gas to higher hydrocarbons, particularly ethylene and ethane, characterized in that a methane-oxygen mixture is passed over a contact mass consisting of at least one compound pertaining to the family of rare-earth metal carbonates. It concerns particularly the use of rare-earth oxycarbonates, more particularly lanthanum oxycarbonate La.sub.2 O.sub.2 (CO.sub.3), as contact mass.

Process for converting methane to higher hydrocarbons

The invention concerns peroxide complexes of metals complying with the general formula LnMXpY, wherein M is a metal selected from groups VIII, IB and VIIB, particularly cobalt, X is an anionic group, for example carboxylate, R is an alkyl, cycloalkyl or arylalkyl group, n=1 or 2, p=0 or 1 and n+p=2. L is a tridentated ligand from the group of 1,3 bis (2-pyridylimino) isoindolines. These complexes are obtained by reaction of a hydroperoxide ROOH with a complex of formula LnMXp. They can be used in oxidizing hydrocarbons to a mixture of alcohols and ketones, either as reactants or as catalysts. They are particularly useful to prepare tert-butanol by oxidation of isobutane in liquid phase, by means of an oxygen-containing gas such as air.

Metal peroxide complexes, their manufacture and use for oxidizing

Peroxidic complexes of vanadium, niobium or tantalum, wherein the metal is linked to an oxygen molecule carrying two negative charges, are used either as reactants for the oxidation of olefinic substrates or hydrocarbons, or as hydrocarbons oxidation catalysts, particularly for converting olefinic compounds to epoxides or aliphatic or aromatic hydrocarbons to the corresponding alcohols or phenols.

Peroxidic complexes of vanadium, niobium and tantalum, used as reactants

Methyl ketones are prepared in liquid phase by oxidizing terminal olefins of the formula R--CH.dbd.Ch.sub.2, where R is a hydrocarbon radical. The oxidizing agent is hydrogen peroxide or an organic hydroperoxide, and the catalyst is a palladium catalyst of the formula Pd AA' where

Process for manufacturing methyl ketones by oxidation of terminal olefins

Olefins are oxidized to unsaturated esters by means of molecular oxygen in the presence of a carboxylic acid and an organometallic palladium complex containing two identical or different hydroxamate anions or one hydroxamate anion and a carboxylate anion, said complex acting as catalyst.

Process for converting olefins to unsaturated esters, using catalysts

Methyl ketones are prepared in liquid phase by oxidizing terminal olefins of the formula R--CH.dbd.CH.sub.2, where R is a hydrocarbon radical. The oxidizing agent is hydrogen peroxide or an organic hydroperoxide, and the catalyst is a palladium catalyst of the formula Pd AA', (L.sub.m) where

Carbonyl compounds are manufactured by oxidizing alcohols or polyalcohols with molecular oxygen in the presence of a catalyst which comprises ruthenium salts or complexes associated with copper or iron salts or complexes.

Catalytic oxidation of alcohols with molecular oxygen to form carbonyl

Process for manufacturing solid catalysts, useful for oxidizing olefins containing from 2 to 16 carbon atoms per molecule to the corresponding carbonyl derivatives, comprising the step of impregnating a carrier with a substantially non-aqueous solution, containing at least two components [A] and [B] of the general formulas:

Heterogeneous phase oxidation of olefins to ketones

Process for manufacturing supported bimetallic catalysts useful for the

Carbonyl compounds are manufactured by oxidation of olefines with molecular oxygen in the presence of a catalytic system comprising both a specific rhodium compound and a specific compound of a metal selected from iron, cobalt, nickel and copper. The reaction is conducted in a substantially anhydrous organic solvent selected from alcohols, polyols and glycol monoethers.

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Rueil Malmaison, France

Hubert Mimoun