Patent · US Active

Method for manufacturing a photocatalyst based on titanium dioxide containing carbon or metal

US9539560B2 · kind B2 · utility

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26Claims

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Assignee

Kronos International, Inc. · DE

Inventors

Joerg Friedrich · Leichlingen, DE
Raimund Meifert · Goldkronach, DE

Key dates

Filing date	Aug 6, 2015
Grant date	Jan 10, 2017
Priority date	—
Expiry date	Aug 6, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2235/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for manufacturing a photocatalyst, based on titanium dioxide containing carbon or metal, in a pulsation reactor, where a raw material mixture, consisting of nanoparticulate titanium oxyhydrate and an aqueous solution or suspension, containing at least one organic, carbon-containing compound or metal ions, is fed into the pulsating hot-gas stream of the pulsation reactor and the titanium dioxide particles containing carbon or metal are formed. The hot-gas stream has a temperature of ≧450° C. following addition of the material and contains an excess of oxygen. In contrast to the known manufacturing methods, the method according to the invention allows reproducibly good product qualities to be achieved.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.