Methods and devices for controlling hydrocarbon oxidations...

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 51/215 (2006.01) B01J 10/00 (2006.01) B01J 19/00 (2006.01) C07C 51/31 (2006.01) C07C 55/14 (2006.01) D01F 6/60 (2006.01) D01F 6/62 (2006.01) D01F 6/74 (2006.01) G05B 13/00 (2006.01)

Patent

CA 2297740

This invention relates to methods and devices of preparing acids, such as adipic acid for example, by oxidizing a hydrocarbon, such as cyclohexane for example, with a gas containing an oxidant, preferably oxygen. A respective hydrocarbon is reacted, preferably at a steady state, with a gaseous oxidant to form an acid in a liquid mixture which preferably contains a solvent, a catalyst, water, and an initiator. The ratio of solvent to hydrocarbon may be controlled in a manner to maintain a reaction parameter selected from a group consisting of reaction rate, reactivity, selectivity, and yield within a desired range, or to direct the reaction parameter toward a desired range.

La présente invention concerne des procédés et dispositifs de préparation d'acides, tels que de l'acide adipique par exemple, par oxydation d'un hydrocarbure, tel que le cyclohexane par exemple, avec un gaz contenant un oxydant, de préférence de l'oxygène. On met en réaction un hydrocarbure respectif, de préférence à l'état stable, avec un oxydant gazeux pour former un acide dans un mélange liquide contenant de préférence un solvant, un catalyseur, de l'eau et un initiateur. On peut réguler le rapport solvant/hydrocarbures de manière à maintenir un paramètre de réaction sélectionné dans un groupe formé par la vitesse de réaction, la réactivité, la sélectivité et le rendement dans une gamme voulue, ou à orienter le paramètre de réaction dans une gamme voulue.

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