Patent · US Active

Method for the separation of metal ions that are divalent or higher from strong acids or highly acidic media

US10106426B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Christian Panz · Wesseling, DE
Florian Paulat · Zeven, DE
Guido Titz · Heimbach, DE
Sven Müller · Bonn, DE
Peter Erlhöfer · Wesseling, DE
Markus Ruf · Meckenheim, DE
Bodo Frings · Aschendorf, DE
Hartwig Rauleder · Rheinfelden (Baden), DE
Thomas Barthel · Detroit Lakes, US
Mustafa Siray · Hanau, DE
Jürgen Behnisch · Berlin, DE

Key dates

Filing date	Dec 4, 2015
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Dec 4, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B33/193
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a method of purifying strong acids or strongly acidic media to remove di- and higher valent metal ions, which can be used within the context of the production of high-purity silica. The invention further relates to the use of special ion exchangers for carrying out the method according to the invention and the resultant high-purity silicas.

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