Abstract:
Disclosed is a catalyst for hydrogenation of 4,4′-methylenedianiline (MDA), including a support, a magnesium-aluminum oxide layer covering the support, and a rhodium-ruthenium active layer loaded on the magnesium-aluminum oxide layer, wherein the rhodium and the ruthenium of the rhodium-ruthenium active layer have a weight ratio of 40:60 to 10:90. The hydrogenation catalyst can be collocated with hydrogen for hydrogenation of the MDA to form bis(para-amino cyclohexyl) methane (PACM), and the PACM contains O mol % to 25 mol % of (t,t)-isomer.
Abstract:
A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1-x-y)Oz, in which 0.7≤x≤0.95, 0.01≤y≤0.25, and z is an oxidation coordination number.
Abstract:
A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1-x-y)Oz, in which 0.7≤x≤0.95, 0.01≤y≤0.25, and z is an oxidation coordination number.
Abstract:
A catalyst composition for hydrogenating 4,4′-methylenedianiline derivatives is provided. The catalyst composition includes a carrier including aluminum oxide and magnesium oxide, a rhodium-ruthenium active layer loaded on the surface of the carrier, and a solvent including an organic amine. The weight percentage of magnesium oxide in the carrier is between 12% and 30%. A method for preparing 4,4′-methylene bis(cyclohexylamine) derivatives using the catalyst composition is also provided.
Abstract:
A method of hydrogenating carbon dioxide, including contacting carbon dioxide and hydrogen with an iron-based catalyst to form a liquid and a gas. The liquid includes CnH2n, CnH2n+2, or a combination thereof and water, wherein n is 5 to 18. The gas includes CH4, CmH2m, CmH2m+2, or a combination thereof, hydrogen, and carbon dioxide, wherein m is 2 to 9. The iron-based catalyst includes 70 mol % to 97 mol % of porous FeO(OH)x (wherein 1
Abstract:
A catalyst composition for hydrogenating 4,4′-methylenedianiline is provided. The catalyst composition includes a carrier including aluminum oxide and magnesium oxide, a rhodium-ruthenium active layer loaded on the surface of the carrier, and organic amine solvent. The weight percentage of magnesium oxide in the carrier is between 12% and 30%. A method for preparing 4,4′-methylene bis(cyclohexylamine) using the catalyst composition is also provided.