Patent · US Active

Method for separation and partial return of rhodium and catalytically effective complex compounds thereof from process streams

US8748643B2 · kind B2 · utility

9Cited by

27References

20Claims

0Family size

Assignee

Evonik Oxeno GmbH · DE

Inventors

Markus Priske · Mobile, US
Götz Baumgarten · Haltern am See, DE
Alfred Kaizik · Marl, DE
Hans-Gerd Lüken · Marl, DE

Key dates

Filing date	Feb 25, 2010
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Jan 2, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method for separating and partially returning transition metals and/or catalytically effective complex compounds thereof from a reaction mixture by combining one at least one-stage membrane separation and an adsorption, wherein a current comprising a catalyst, comprising a transition metal, is divided over at least one one-stage membrane separation step in a transition metal enriched retentate stream that resupplies the reaction mixture and a transition metal depleted permeate stream and the transition metal depleted permeate stream is further supplied to an adsorption step. The invention further relates to a method for producing tridecanals.

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