processes for the preparation of a caprolactam product, to produce nylon 6 and for the production of adipic acid caprolactam, caprolactam, process, and catalyst useful for the production of caprolactam

摘要

"Processes for the preparation of a caprolactam product, to produce nylon 6 and for the production of caprolactam from adipic acid, and useful catalyst for the production of caprolactam" processes are disclosed for the conversion of adipic acid to caprolactam employing a chemical-catalytic reaction in which an adipic acid substrate is reacted with ammonia and hydrogen in the presence of particular heterogeneous catalysts and exclusive solvents. The present invention also permits the conversion of other adipic acid substrates, such as adipic acid monoesters, adipic acid diesters, adipic acid monoamides, adipic acid dimides and their caprolactam salts. solvents useful in the process that do not react with ammonia are also disclosed. catalyst supports that are catalyze the reaction of the substrate with ammonia in the absence of added metal. Metals in the catalyst supports include ruthenium (ru), rhodium (rh), palladium (pd), os (os), iridium (ir), and / or platinum (pt). heterogeneous catalysts comprising ruthenium (ru) and rhenium (re) supports in titania and / or zirconia are also disclosed. In addition, products produced by such processes are disclosed, as well as products produced from such products.