Method for producing transition alumina catalyst monoliths
US11547981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | May 28, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2521/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing a three-dimensional porous transition alumina catalyst monolith of stacked catalyst fibers, comprising:a) Preparing a paste in a liquid diluent of hydroxide precursor particles and/or oxyhydroxide precursor particles of transition alumina particles, all particles in the suspension having a number average particle size in the range of from 0.05 to 700 μm,b) extruding the paste nozzle(s) to form fibers, and depositing the extruded fibers to form a three-dimensional porous catalyst monolith precursor,c) drying the precursor to remove the liquid diluent,d) performing a temperature treatment of the dried porous catalyst monolith precursor to form the transition alumina catalyst monolith,wherein no temperature treatment of the porous catalyst monolith precursor or porous catalyst monolith at temperatures above 1000° C. is performed and wherein no further catalytically active metals, metal oxides or metal compounds are applied to the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.