Preparation of precipitated ZN PP catalysts with internal pore structure using nanoparticles
AssigneeBorealis AG
InventorsAnssi Haikarainen, Peter Denifl, Timo Leinonen
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Abstract
A process for the preparation of a catalyst that is in the form of solid particles includes preparing a solution of a complex of a metal and an electron donor; adding to the solution solid material obtaining a suspension combining the suspension at a temperature of at least 50° C. with at least one transition metal compound resulting in a precipitation of the catalyst being in the form of a solid particle; and optionally separating the catalyst.
Claims18
Process for the preparation of a catalyst being in the form of solid particles comprising the steps of
- (a1) preparing a solution (A) of a complex (C) of a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC) and an electron donor (E) by reacting a compound (CM) of said metal with said electron donor (E) or a precursor (EP) thereof in an organic liquid reaction medium (OL1);
- (b1) adding to said solution solid material (SM) obtaining a suspension (S1), said solid material (SM)
- (i) does not comprise catalytically active sites,
- (ii) has a specific surface area below 500 m2/g, and
- (iii) has a mean particle size below 200 nm;
- (c1) combining said suspension (S1) at a temperature of at least 50° C. with at least one transition metal compound (CT) resulting in a precipitation of said catalyst being in the form of a solid particle, wherein said transition metal compound (CT) is selected from one of the groups 4 to 10 of the periodic table (IUPAC) or a compound of actinide or lanthanide;
- and
- (d1) optionally separating said catalyst;
- said catalyst being in the form of solid particles, which
- (i) have a specific surface area of less than 20 m2/g, and
- (ii) contain said solid material (SM).
Process for the preparation of a catalyst being in the form of solid particles comprising the steps of:
- (a2) preparing a solution (A) of a complex (C) of a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC) and an electron donor (E) by reacting a compound (CM) of said metal with said electron donor (E) or a precursor (EP) thereof in an organic liquid reaction medium (OL1);
- (b2) adding solid material (SM) to at least one transition metal compound (CT), said transition metal compound (CT) is selected from one of the groups 4 to 10 of the periodic table (IUPAC) or a compound of actinide or lanthanide, obtaining a suspension (S2),
- said solid material (SM)
- (i) does not comprise catalytically active sites
- (ii) has a specific surface area below 500 m2/g, and
- (iii) has a mean particle size below 200 nm
- (c2) combining said solution (A) with said suspension (S2) at a temperature of at least 50° C. resulting in a precipitation of said catalyst being in the form of solid particles;
- and
- (d2) optionally separating said catalyst;
- said catalyst being in the form of solid particles which
- (i) have a specific surface area of less than 20 m2/g, and
- (ii) contain said solid material (SM).
Catalyst in form of solid particles, wherein the particles
- (a) have a specific surface area of less than 20 m2/g,
- (b) have a particle size distribution of a SPAN value of at least 2.0,
- (c) optionally are free of any precipitating agents,
- (d) comprise a transition metal compound which is selected from one of the groups 4 to 10 of the periodic table (IUPAC) or a compound of actinide or lanthanide,
- (e) comprise a metal compound which is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and
- (f) comprise solid material, wherein the solid material
- (i) does not comprise catalytically active sites,
- (ii) has a specific surface area below 500 m2/g, and
- (iii) has a mean particle size below 200 nm.
Dependencies are inferred from the claim text.