摘要:
Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed, and these processes include the steps of forming a supported chromium catalyst comprising chromium in a hexavalent oxidation state, irradiating the hydrocarbon reactant and the supported chromium catalyst with a light beam at a wavelength in the UV-visible spectrum to reduce at least a portion of the supported chromium catalyst to form a reduced chromium catalyst, and hydrolyzing the reduced chromium catalyst to form a reaction product comprising the alcohol compound and/or the carbonyl compound. The supported chromium catalyst can be formed by heat treating a supported chromium precursor, contacting a chromium precursor with a solid support while heat treating, or heat treating a solid support and then contacting a chromium precursor with the solid support.
摘要:
This invention is directed at a mechanochemical process using at least one solid catalytically active compound for simulating or capturing the transformation over time of a solid pharmaceutical composition in a shortened time span and the respective degradation pathways to convert at least a part of a solid compound composition into the respective transformation (or degradation) products. The process is accomplished with chemically stimulating energy, in which an active reaction container like a ball mill is filled with a reaction mixture, the reaction mixture comprising said solid compound composition and - if suitable - at least one solid solid catalytically active compound. Often the solid compound composition is being brought in operative contact with at least a part of the active reaction container and in contact with the at least one solid solid catalytically active compound. Most preferably the process is a substantially solvent-free process. In addition, the invention also encompasses an analytical process in which the composition mixture remaining in the active reaction container at the end of a process is analyzed, a degradation product derived from the mechanochemical process according to the invention, as well as a medicament comprising the same. In addition, the invention further encompasses an analytical kit comprising an assortment of at least three separate catalyst-containers A-C for use in the mechanochemical process and/or the analytical process according to the invention and the use of the mechanochemical process according to the invention to determine various data.
摘要:
The present invention relates to the process for production of ketones from secondary alcohols by the use of a hybrid material, formed by the dichlorohydrotris(pyrazol-1-y1)methane iron (II) complex covalently bound to multi-walled carbon nanotubes functionalized with superficial carboxylate groups, as efficient and selective catalyst of peroxidative oxidation, microwave-assisted and without solvent addition.
摘要:
The present invention discloses an iron-based nitrogen doped graphene catalyst, process for preparation thereof and use of said catalyst in oxidant-free catalytic dehydrogenation of alcohols and amines to the corresponding carbonyl compounds, amines and N -heterocylic compounds with extraction of molecular hydrogen as the only by-product.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Umsetzung von Isopulegol zu Menthon in der Gasphase mit einem Kupferkatalysator und die Verwendung der so hergestellten Reaktionsprodukte als Zusatz in Lebensmitteln, Kosmetika, pharmazeutischen Erzeugnissen, Tabakformulierungen, Haushaltsprodukten und Wäschepflegeprodukten.