Process for the preparation of nitrogen-containing compounds

C - Chemistry – Metallurgy – 01 – C

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C01C 3/02 (2006.01) B01J 23/46 (2006.01)

Patent

CA 2654648

Process for the preparation of a nitrogen-containing Compound, comprising the Steps of: a) bringing N2, optionally NH3 and optionally a recycle stream together with a carbon- and hydrogen-containing Compound or a carbon-containing Compound and H2 to form a reaction mixture, whereby the ammonia in the reaction mixture, if present, originates for at least 30 wt.% from the recycle stream; b) bringing the reaction mixture in contact with a catalyst at a temperature lying between 200°C and 800°C and at a space velocity lying between 102 and 106 ml/(g.h), said catalyst containing a metal M1 on a support, M1 being chosen from the group consisting of metals in group 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 of the IUPAC Periodic Table of Elements or mixtures thereof, whereby the nitrogen- containing Compound is formed; c) optionally separating, subsequent to step b), a portion of between 1 and 99 vol.% off from the reaction mixture, said portion being the recycle stream.

L'invention concerne un procédé de préparation d'un composé contenant de l'azote. Ce procédé comprend les étapes consistant à : a) amener N2, éventuellement NH3, et éventuellement un flux de recyclage en contact avec un composé contenant du carbone et de l'hydrogène ou avec un composé contenant du carbone et avec H2 pour former un mélange réactionnel dans lequel, si de l'ammoniaque est présent dans le mélange réactionnel, il provient pour au moins 30 % en poids du flux de recyclage; b) amener le mélange réactionnel en contact avec un catalyseur, à une température comprise entre 200°C et 800°C et à une vitesse spatiale comprise entre 102 and 106 ml/(g.h), le catalyseur contenant un métal M1 sur un support, M1 étant choisi dans le groupe comprenant des métaux du groupe 3, 4, 5, 6, 7, 8, 9, 10, 11 et 12 du tableau périodique des éléments de l'IUPAC, ou des mélanges de ceux-ci; ce qui permet de former le composé contenant de l'azote de l'invention, c) séparer éventuellement, après l'étape b), une partie comprise entre 1 et 99 % en volume du mélange rédactionnel, cette partie constituant le flux de recyclage.

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