公开(公告)号：US20240091756A1

公开(公告)日：2024-03-21

申请号：US18032609

申请日：2021-10-20

Applicant: BASF SE

Inventor： Samira PARISHAN ,  Kazuhiko AMAKAWA ,  Ulrich HAMMON ,  Christian WALSDORFF ,  Necip NESELI ,  Markus MUEHL

IPC: B01J37/02 ,  B01J23/00 ,  B01J23/887 ,  B01J35/30 ,  B01J35/55 ,  B01J35/63 ,  B01J37/00

CPC classification number: B01J37/0215 ,  B01J23/002 ,  B01J23/8877 ,  B01J35/395 ,  B01J35/397 ,  B01J35/55 ,  B01J35/63 ,  B01J37/0018 ,  B01J2523/17 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69

Abstract: A process for producing an eggshell catalyst, comprising the coating of the outer surface of a geometric shaped support body with a catalytically active multielement oxide or a powder P, wherein the powder P, after being coated, is converted by thermal treatment to a catalytically active multielement oxide, and one or more liquid binders, wherein the coating is conducted in a horizontal mixer and the Froude number during the coating in the horizontal mixer is from 0.0160 to 0.1200.

公开(公告)号：US20230144424A1

公开(公告)日：2023-05-11

申请号：US17918345

申请日：2021-04-12

Applicant: BASF SE

Inventor： Kazuhiko AMAKAWA ,  Samira PARISHAN ,  Christian WALSDORFF ,  Patrick HUBACH ,  Tobias WEINLAND

IPC: B01J23/888 ,  B01J37/08 ,  B01J6/00 ,  B01J37/00 ,  B01J35/10 ,  B01J8/02 ,  C07C51/235

CPC classification number: B01J23/8885 ,  B01J37/08 ,  B01J6/004 ,  B01J37/0045 ,  B01J35/1014 ,  B01J8/02 ,  C07C51/235 ,  C07C2523/888

Abstract: A process for producing a catalytically active multielement oxide comprising the elements Mo, W, V and Cu, wherein at least one source of the elemental constituents W of the multielement oxide is used to produce an aqueous solution, the resultant aqueous solution is admixed with sources of the elemental constituents Mo and V of the multielement oxide, drying of the resultant aqueous solution produces a powder P, the resultant powder P is optionally used to produce geometric shaped precursor bodies, and the powder P is or the geometric shaped precursor bodies are subjected to thermal treatment to form the catalytically active composition, wherein the aqueous solution used for drying comprises from 1.6% to 5.0% by weight of W and from 7.2% to 26.0% by weight of Mo, based in each case on the total amount of aqueous solution.