Patent classifications
B01J25/02
Method for manufacturing catalysts with reduced attrition
The present invention discloses an inventive method for manufacturing a catalyst using alloy granules having a high-Ni content. The inventive method may include providing alloy granules comprising aluminum and nickel, and treating the alloy granules with an alkaline solution to form the catalyst. A content of the nickel in the alloy granules may be within a range of about 43 wt % to about 60 wt %. The alloy granules may have effective diameters within a range of about 1 mm to about 10 mm. The catalyst may have an attrition value of less than about 7.0%.
Method for preparing adrenochrome by catalytic oxidation using nitrogen-doped carbon nanotubes
Disclosed is a method for preparing adrenochrome by catalytic oxidation using nitrogen-doped carbon nanotubes. The method catalyzes dissolved oxygen in an aqueous solution by the nitrogen-doped carbon nanotubes to rapidly oxidize adrenaline, which is completely transformed into adrenochrome. It is a novel preparation process of adrenochrome, which is simple, and has mild reaction conditions, high product purity, an impurity content less than 10.sup.−8%, and low subsequent processing cost, thereby having a great application prospect. The nitrogen-doped carbon tubes after use can be regenerated and recovered, and its reutilization is still able to realize the complete transformation of adrenaline. The high utilization rate of catalytic material conforms to the concept of energy conservation, minimizing the costs.
Heterogeneous catalyst process and nickel catalyst
The present invention relates to heterogeneous catalysts and methods of making and using the same. In various embodiments, the present invention provides a method of making a hydrogenation catalyst including particulate nickel metal (Ni(0)). The method includes calcining first nickel(II)-containing particles in an atmosphere including oxidizing constituents to generate second nickel(II)-containing particles. The method also includes reducing the second nickel(II)-containing particles in a reducing atmosphere while rotating or turning the second nickel(II)-containing particles at about 275° C. to about 360° C. for a time sufficient to generate the particulate nickel metal (Ni(0)), wherein the particulate nickel metal (Ni(0)) is free flowing.
Heterogeneous catalyst process and nickel catalyst
The present invention relates to heterogeneous catalysts and methods of making and using the same. In various embodiments, the present invention provides a method of making a hydrogenation catalyst including particulate nickel metal (Ni(0)). The method includes calcining first nickel(II)-containing particles in an atmosphere including oxidizing constituents to generate second nickel(II)-containing particles. The method also includes reducing the second nickel(II)-containing particles in a reducing atmosphere while rotating or turning the second nickel(II)-containing particles at about 275° C. to about 360° C. for a time sufficient to generate the particulate nickel metal (Ni(0)), wherein the particulate nickel metal (Ni(0)) is free flowing.
Method for the preparation of C.SUB.3.—C.SUB.12.-alcohols by catalytic hydrogenation of the corresponding aldehydes
The present invention relates to a process for preparing C.sub.3-C.sub.12 alcohols by catalytically hydrogenating the corresponding aldehydes at a temperature in the range of 50-250° C. and a pressure in the range of 5-150 bar in the presence of a supported activated Raney-type catalyst, characterized in that the support body is a metal foam and the metal is selected from the group consisting of cobalt, nickel and copper and mixtures thereof.
Method for the preparation of C.SUB.3.—C.SUB.12.-alcohols by catalytic hydrogenation of the corresponding aldehydes
The present invention relates to a process for preparing C.sub.3-C.sub.12 alcohols by catalytically hydrogenating the corresponding aldehydes at a temperature in the range of 50-250° C. and a pressure in the range of 5-150 bar in the presence of a supported activated Raney-type catalyst, characterized in that the support body is a metal foam and the metal is selected from the group consisting of cobalt, nickel and copper and mixtures thereof.
Method for Continuously Producing Diols from Aldehydes by Means of Raney Cobalt Catalysis
The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).
Method for Continuously Producing Diols from Aldehydes by Means of Raney Cobalt Catalysis
The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).
Processes to produce elagolix
The present invention relates to a scalable process for the making of elagolix, its salts and the process of intermediate compounds.
Processes to produce elagolix
The present invention relates to a scalable process for the making of elagolix, its salts and the process of intermediate compounds.