摘要:
Process for producing compounds comprising nitrile functionsThe present invention relates to a process for producing compounds comprising at least one nitrile function by hydrocyanation of a compound comprising at least one non-conjugated unsaturation.The invention proposes a process for producing compounds comprising at least one nitrile function by hydrocyanation of an organic compound comprising at least one non-conjugated unsaturation, comprising from 2 to 20 carbon atoms, by reaction with hydrogen cyanide in the presence of a catalytic system comprising a complex of nickel having the oxidation state of zero with at least one organophosphorus ligand chosen from the group comprising organophosphites, organophosphonites, organophosphinites and organosphosphines and a cocatalyst of the Lewis acid type.
摘要:
The present invention relates to a catalyst for glycerin dehydration, a preparation method thereof, and a preparation method of acrolein, and more particularly, to a catalyst for glycerin dehydration which minimizes by-product formation during glycerin dehydration to improve acrolein selectivity and maintains high catalytic activity during reaction.
摘要:
The disclosure provides an improved endothermic hydrocarbon conversion process that comprises reacting a hydrocarbon with a multi-component catalyst bed, and regenerating the catalyst bed with air, where the air used in regeneration step and hydrocarbon are at low air to hydrocarbon ratios and optionally at near-atmospheric pressures.
摘要:
Provided is a method for stably and economically producing xylylenediamine with a high yield and long catalyst service life by hydrogenating dicyanobenzene that is obtained by ammoxidating xylene. By bringing an aqueous basic solution into contact with a dicyanobenzene-absorbed liquid, which is obtained by bringing an ammoxidation reaction gas into contact with an organic solvent, under specified temperature conditions, and subjecting a base and a carboxylic acid in the dicyanobenzene-absorbed liquid to a neutralization reaction so as to form an aqueous phase that contains a water-soluble salt, and then subjecting an organic phase and the aqueous phase to liquid-liquid separation so as to remove the aqueous phase, it is possible to remove the carboxylic acid contained in the dicyanobenzene-absorbed liquid with high selectivity while inhibiting loss of the dicyanobenzene. By subjecting the raw material dicyanobenzene, which is obtained by separating low boiling point compounds from the post liquid-liquid separation organic phase by distillation under reduced pressure, to hydrogenation, xylylenediamine is produced with a high yield and the service life of the hydrogenation catalyst is extended.
摘要:
Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed.
摘要:
A reactor and process capable of concurrently producing electric power and selectively oxidizing gaseous components in a feed stream, such as hydrocarbons to unsaturated products, which are useful intermediates in the production of liquid fuels. The reactor includes an oxidation membrane, a reduction membrane, an electron barrier, and a conductor. The oxidation membrane and reduction membrane include an MIEC oxide. The electron barrier, located between the oxidation membrane and the reduction membrane, is configured to allow transmission of oxygen anions from the reduction membrane to the oxidation membrane and resist transmission of electrons from the oxidation membrane to the reduction membrane. The conductor conducts electrons from the oxidation membrane to the reduction membrane.
摘要:
Provided is a method for stably and economically producing xylylenediamine with a high yield and long catalyst service life by hydrogenating dicyanobenzene that is obtained by ammoxidating xylene. By bringing an aqueous basic solution into contact with a dicyanobenzene-absorbed liquid, which is obtained by bringing an ammoxidation reaction gas into contact with an organic solvent, under specified temperature conditions, and subjecting a base and a carboxylic acid in the dicyanobenzene-absorbed liquid to a neutralization reaction so as to form an aqueous phase that contains a water-soluble salt, and then subjecting an organic phase and the aqueous phase to liquid-liquid separation so as to remove the aqueous phase, it is possible to remove the carboxylic acid contained in the dicyanobenzene-absorbed liquid with high selectivity while inhibiting loss of the dicyanobenzene. By subjecting the raw material dicyanobenzene, which is obtained by separating low boiling point compounds from the post liquid-liquid separation organic phase by distillation under reduced pressure, to hydrogenation, xylylenediamine is produced with a high yield and the service life of the hydrogenation catalyst is extended.
摘要:
Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed.
摘要:
A process for producing a composite oxide catalyst which includes a step of preparing an aqueous slurry containing at least iron and antimony and composed of a liquid phase and a solid phase, a step of drying the aqueous slurry to obtain a dried material, and a step of calcining the obtained dried material, wherein of the precipitated particles having a particle size of not less than 1 μm but less than 150 μm contained within the aqueous slurry, the proportion of precipitated particles having a particle size of not less than 1 μm but less than 10 μm is within a range from 40 to 90% by volume, and the proportion of precipitated particles having a particle size of not less than 10 μm but less than 150 μm is within a range from 10 to 60% by volume.
摘要:
Methods for preparing catalystis for exidation of unsaturated and/or saturated aldehydes to unsaturated acids is disclosed where the catalyst includes at least molybenum (Mo), phosphorus (P), vanadium (V), bismuth (Bi), where the bismuth component was dissolved in an organic acid solution prior to adding the bismuth containing solution to a solution of the other components.