摘要:
A catalyst which can maintain excellent catalytic activity and excellent durability for a long period when used in a wet oxidation treatment of waste water, and a method for the wet oxidation treatment of waste water using the catalyst, are provided. Also provided is a novel method for treating a waste water containing nitrogen-containing compounds, in which a catalyst of a lower catalyst cost is used, a waste water containing nitrogen-containing compounds can be treated with high purifying performance, and superior purifying performance can be maintained. The catalyst for waste water treatment contains, as a component A, an oxide of at least one element selected from the group consisting of iron, titanium, silicon, aluminum, zirconium and cerium, and as a component B, at least one element selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium and iridium, wherein at least 70% by mass of the component B is present in the region within 1000 µm from the outer surface of the oxide of the component A, the average particle size of the component B is 0.5 nm to 20 nm, and the solid acid content of the oxide of the component A is 0.20 mmol/g or greater. he method for treating waste water includes treating a waste water containing nitrogen-containing compounds in the presence of an oxidizing agent, at a temperature equal to or higher than 100°C and lower than 370°C under the pressure conditions so as to keep the waste water in liquid phase, by using a catalyst which converts a nitrogen-containing compound into ammoniacal nitrogen (pre-catalyst) on the upstream side in the flow direction of the waste water, and a catalyst on the downstream side for treating an ammoniacal nitrogen-containing waste water (post-catalyst) on the downstream side.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Epoxidierung von Kohlenwasserstoffen mit Sauerstoff oder Luft oder Stickstoffoxiden oder anderen gasförmigen Oxidationsmitteln, dadurch gekennzeichnet, dass das Verfahren in Gegenwart einer Mischung enthaltend wenigstens zwei Elemente aus der Gruppe bestehend aus Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi und Se auf einem Träger mit einer BET-Oberfläche von weniger als 200 m 2 /g durchgeführt wird sowie die Verwendung einer Mischung enthaltend wenigstens zwei Metalle aus der Gruppe bestehend aus Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi und Se auf einem Träger mit einer BET-Oberfläche von weniger als 200 m 2 /g zur Epoxidierung von Kohlenwasserstoffen.
摘要:
The present invention relates to a catalyst for aminating a polyether polyol and preparation method thereof and a method of preparing a polyetheramine using the catalyst. The catalyst has active components and a carrier. The active components are Ni, Cu, and Pd. The method of preparing the catalyst comprises the following steps: using a metal solution or a metal melt impregnated carrier, obtaining a catalyst precursor; and drying and calcinating the obtained catalyst precursor, so as to obtain a catalyst. By introducing the active component Pd in the catalyst, the present invention clearly improves selectivity of an amination catalyst with respect to a preaminated product, and increases raw material conversion rate.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Epoxidierung von Kohlenwasserstoffen mit Sauerstoff oder Luft oder Stickstoffoxiden oder anderen gasförmigen Oxidationsmitteln, dadurch gekennzeichnet, dass das Verfahren in Gegenwart einer Mischung enthaltend wenigstens zwei Elemente aus der Gruppe bestehend aus Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi und Se auf einem Träger mit einer BET-Oberfläche von weniger als 200 m 2 /g durchgeführt wird sowie die Verwendung einer Mischung enthaltend wenigstens zwei Metalle aus der Gruppe bestehend aus Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Re, Fe, Co, Ni, Sn, Pb, Sb, Bi und Se auf einem Träger mit einer BET-Oberfläche von weniger als 200 m 2 /g zur Epoxidierung von Kohlenwasserstoffen.
摘要:
A method for dehydrating primary or secondary alcohols with 1 to 12 C- atoms to the corresponding aldehydes or ketones, wherein the alcohol is brought into contact with a catalytically active compound comprising an active component of the formula PdaBibYcZd, wherein Y is selected from the group comprising Co, Rh, Pt, Ag, and Au, and Z is selected from the group comprising Na, Cs, Mg, Ca, Ba, V, Cr, W, Fe, Ni, and Cul Sb, and wherein the indices a, b, c, and d indicate the mass ratios among the respective elements, where a = 0.1 - 3, b = 0.1 - 3, c = 0 - 3, d = 0 - 1.
摘要:
The invention relates to moulded bodies having catalytic properties, obtained due to a method that comprises the following said steps: a) a moulded body is produced by means of a powder-based rapid- prototyping-method, b) said moulded body is optionally heat-treated, c) at least one catalytically active component is optionally applied to the moulded body, d) said moulded body is optionally subjected to another heat-treatment. The steps b, c) and/or d) can be performed several times. Said moulded bodies are used as reactor fittings in heterogeneously catalyzed chemical reactions.
摘要:
A catalyst which can maintain excellent catalytic activity and excellent durability for a long period when used in a wet oxidation treatment of waste water, and a method for the wet oxidation treatment of waste water using the catalyst, are provided. Also provided is a novel method for treating a waste water containing nitrogen-containing compounds, in which a catalyst of a lower catalyst cost is used, a waste water containing nitrogen-containing compounds can be treated with high purifying performance, and superior purifying performance can be maintained. The catalyst for waste water treatment contains, as a component A, an oxide of at least one element selected from the group consisting of iron, titanium, silicon, aluminum, zirconium and cerium, and as a component B, at least one element selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium and iridium, wherein at least 70% by mass of the component B is present in the region within 1000 µm from the outer surface of the oxide of the component A, the average particle size of the component B is 0.5 nm to 20 nm, and the solid acid content of the oxide of the component A is 0.20 mmol/g or greater. he method for treating waste water includes treating a waste water containing nitrogen-containing compounds in the presence of an oxidizing agent, at a temperature equal to or higher than 100°C and lower than 370°C under the pressure conditions so as to keep the waste water in liquid phase, by using a catalyst which converts a nitrogen-containing compound into ammoniacal nitrogen (pre-catalyst) on the upstream side in the flow direction of the waste water, and a catalyst on the downstream side for treating an ammoniacal nitrogen-containing waste water (post-catalyst) on the downstream side.
摘要:
A method for dehydrating primary or secondary alcohols with 1 to 12 C- atoms to the corresponding aldehydes or ketones, wherein the alcohol is brought into contact with a catalytically active compound comprising an active component of the formula PdaBibYcZd, wherein Y is selected from the group comprising Co, Rh, Pt, Ag, and Au, and Z is selected from the group comprising Na, Cs, Mg, Ca, Ba, V, Cr, W, Fe, Ni, and Cul Sb, and wherein the indices a, b, c, and d indicate the mass ratios among the respective elements, where a = 0.1 - 3, b = 0.1 - 3, c = 0 - 3, d = 0 - 1.
摘要:
The invention relates to a catalytically active composition containing Pd and Bi as active constituents, and at least one element selected from the group (a) consisting of Rh, Au, Sb, V, Cr, W, Mn, Fe, Co, Ni, Na, Cs and Ba; or Pd, Rh and Bi, and optionally an element selected from the group (a') consisting of Au, Sb, V, Cr, W, Mn, Fe, Co, Ni, Pt, Cu, Ag, Na, Cs, Mg, Ca and Ba. The invention also relates to a method for dehydrating hydrocarbons, preferably oxofunctionalised hydrocarbons such as cyclopentanone, cyclohexanone and isovaleraldehyde, by means of the catalytically active composition.
摘要:
Verfahren zur Herstellung von Acyloxybutenen durch Umsetzung von Buta-1,3-dienen mit Sauerstoff und niedermolekularen Carbonsäuren in Gegenwart eines Palladium oder Platin sowie Antimon und/oder Bismut enthaltenden Trägerkatalysators, der als zusätzliches Element Kupfer enthält.