摘要:
The present invention relates to a method for conditioning suspended catalysts, characterized in that at least a partial quantity of the reaction medium containing catalysts is obtained from one or several reactors, and the suspended, at least partially deactivated catalysts are separated and cleaned by means of at least one membrane filtration, wherein at least one of the membrane filtrations is performed as a diafiltration.
摘要:
The invention relates to a method for producing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound, selected from the group comprising ammonia, primary and secondary amines, in the presence of a zirconium dioxide-containing catalyst and a nickel-containing catalyst. The invention is characterised in that the catalytically active weight of the catalyst, prior to reduction with hydrogen, contains oxygen-containing compounds of zirconium, copper and nickel and oxygen-containing compounds of one or more metals, selected from Sb, Pb, Bi and In.
摘要:
The invention relates to a method for producing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound, selected from the group comprising ammonia, primary and secondary amines, in the presence of a zirconium dioxide and nickel-containing catalyst. The catalytically active mass of the catalyst, prior to its reduction with hydrogen, contains oxygen-containing compounds of zirconium, copper, nickel and cobalt and 5.5 to 12 wt% of oxygen-containing compounds of molybdenum, calculated as MoO3.
摘要:
Process for producing ethyleneamines by reacting monoethanolamine (MEOA) with ammonia in the presence of a transition metal heterogeneous catalyst in which the catalytically active mass of the catalyst before the treatment with hydrogen contains oxygen-containing compounds of aluminium, copper, nickel and cobalt and the shaped catalyst body in the case of bead shape or rod shape in each case has a diameter of
摘要:
The invention relates to mixtures containing linear block copolymers consisting of vinyl aromatic monomers and dienes, of structure (I) S1-B1-S2 and (II) S3-B2-S4, wherein S1 represents a block of vinyl aromatic monomers having a number average molar mass Mn of between 40,000 and 100,000 g/mol; S2, S3 and S4 respectively represent blocks of vinyl aromatic monomers having a number average molar mass Mn of between 5,000 and 20,000 g/mol; and B1 and B2 respectively represent blocks of dienes or copolymer blocks of dienes and vinyl aromatic monomers having a number average molar mass Mn of between 15,000 and 40,000 g/mol. The ratio of the block copolymers (I)/(II) is between 0.6 and 2.
摘要:
The invention relates to a method for producing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound, selected from the group comprising ammonia, primary and secondary amines, in the presence of a zirconium dioxide-containing catalyst and a nickel-containing catalyst. The invention is characterised in that the catalytically active weight of the catalyst, prior to reduction with hydrogen, contains oxygen-containing compounds of zirconium, copper, nickel and cobalt and oxygen-containing compounds of one or more metals, selected from Pb, Bi, Sn, Sb and In.
摘要:
The invention relates to a method for producing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound, selected from the group comprising ammonia, primary and secondary amines, in the presence of a zirconium dioxide-containing catalyst and a nickel-containing catalyst. The catalytically active weight of the catalyst, prior to reduction with hydrogen, contains oxygen-containing compounds of zirconium, copper, nickel and cobalt and 0,5 to 6 wt.-% oxygen-containing compounds of silver, calculated as AgO.
摘要:
A method for preparing aminodiglycol (ADG) and morpholine by reaction of diethyleneglycol (DEG) with ammonia in the presence of a transition metal heterogeneous catalyst is characterised in that the catalytically active mass of the catalyst contains, before treatment with hydrogen, oxygen-containing compounds of aluminium and/or zirconium, copper, nickel and cobalt, and in that the catalyst moulding in pellet or strand form has a diameter of