Institut Francais Du Pe'trole

Societe Chimique De La Grande Paroisse, Azote Et Produits Chimiques

Societe Chimique De La Grande Paroisse, Azote Et Products Chimiques

Grande Paroissee, S.a.

Societe Chimique De La Grande Paroisse, Azote Et Producits Chimiques

Ykk Corporation

Institut Regional Des Materiaux Avances

Christian Hamon

Michel Senes

Jean Morlec

Yannick Le Goff

Bernard Denise

Gilles Descat

Olivier Le Lamer

Jean Bandiera

Raymond Sneeden

Luc Navascues

Delphine Le Guern

The invention relates to a method of manufacture of carbon black by pyrolysis of rubber waste previously ground and from which the scrap has been removed. With this method, pyrolysis is carried out in the presence of at least one gas selected from water vapour, carbon dioxide, a combustion gas or a mixture of water vapour and at least one inert gas.

Method of manufacture of carbon black by pyrolysis of rubber waste

The invention concerns novel zeolite Y containing catalyst compositions and the use thereof for the treatment of oxygenated effluents containing nitrogen oxides. The invention further concerns the preparation of such novel zeolite Y containing catalyst compositions.

Zeolite Y-based catalytic composition for use in the treatment of

Conversion of the synthetic gas mixtures: carbon monoxide - hydrogen or carbondioxide - hydrogen is carried out in the presence of a catalyst constituted by the association of at least two transition metal elements with an acitve mordenite selected from among de-aluminized acid mordenites. The metal elements can be copper, zinc and chromium. The transition metal elements - active mordenite association can be employed in separate catalytic beds, the first bed being metallic in nature and the second zeolitic in nature. The process is applicable to the manufacture of organic products such as saturated and unsaturated hydrocarbons, particularly light olefines.

Conversion catalysts for synthesis gas

Production of unsaturated hydrocarbons of 2-5 carbon atoms from methanol in the presence of zeolitic catalysts is effected by introducing gaseous methanol into a carrier gas, the concentration of the methanol in the entering mixture being between 5 and 60% by volume, and passing the mixture through a catalytic bed based on synthetic mordenite of the so-called de-aluminized type whose Si/Al ratio (atomic) is higher than 80, the flow rate of the methanol being between 1 and 5 liters of liquid methanol per liter of catalyst and per hour. The reaction is carried out at a temperature between 350.degree. and 550.degree. C., under a pressure which can reach 20 bars. The de-aluminized synthetic mordenite is prepared by subjecting the mordenite to a series of alternate acid and hydrothermic treatments, the said series commencing with an acid treatment and terminating with an acid treatment.

Production of hydrocarbons from methanol in the presence of zeolite

A catalyst for implementing a process for manufacturing amines from alcoh is composed of an active element in the transition metals family uniformly combined with a refractory porous structure with a specific surface of between 10 and 300 m.sup.2 /g and with a pore diameter less than 5000 A. A stabilizer in the form of a sodium-based compound with a sodium content of 0.15 to 20% by weight relative to the weight of the catalyst, and a promoter in the form of a rhodium-based compound with a maximum rhodium content of 0.1% by weight relative to the weight of the catalyst, may be associated with the active metal. The catalyst and the process are applicable to the ethanolamine-ammonia reaction with a view to producing ethylenediamine, piperazine, and useful byproducts.

Catalyst for manufacturing amines from alcohols

Growing community of inventors

Saint-Nazaire, France

Christian Hamon