Patent · US Active

CMS membrane, method for the production thereof and use thereof

US11786870B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignee

Forschungszentrum Jülich GmbH · DE

Inventors

Patrick Tchoua Ngamou · Jülich, DE
Mariya Ivanova · Jülich, DE
Wilhelm Albert Meulenberg · Vaals, NL
Olivier Guillon · Emmelshausen, DE

Key dates

Filing date	Sep 16, 2019
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Jun 14, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Disclosed are a CMS membrane, characterized in that it is obtainable by pyrolysis of a polyimide composed of the monomers 1-(4-aminophenyl)-1,3,3-trimethyl-2H-inden-5-amine and 5-(1,3-dioxo-2-benzofuran-5-carbonyl-2-benzofuran-1,3-dione of the following formulae: preferably by pyrolysis of the polyimide having the CAS number 62929-02-6, and a supported CMS membrane comprising a CMS membrane obtainable from a polyimide by pyrolysis and a porous support, characterized in that a mesoporous intermediate layer is provided between the CMS membrane and the porous support. Further disclosed are a process for preparing the supported membrane, the use of the membranes for separating gas mixtures or liquid mixtures, an apparatus for gas separation or for liquid separation, and the use of the polyimide for preparing a CMS membrane by pyrolysis.

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