The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2020
Filed:
Jul. 17, 2017
Oxfa Gmbh, Scheßlitz, DE;
Hermann Wolf Jbach, Bischberg, DE;
Florian Kohler, Nuremberg, DE;
Matthias Schmidt, Erlangen, DE;
Gunthard Scholz, Gundelsheim, DE;
Martin Dirauf, Ebensfeld, DE;
OXFA GMBH, Schesslitz, DE;
Abstract
The invention relates to a method for separating formic acid from a reaction mixture by means of extraction, wherein, in addition to the formic acid, the reaction mixture comprises a polyoxometalate ion of general formula [PMoVO]as a catalyst and a solvent that dissolves the catalyst, wherein 6≤x≤11, 1≤6, x+y=12 and 3<n<10, wherein n, x, and y are each a whole number, wherein the separation occurs via extraction by means of a polar organic extraction agent which extracts the formic acid and the catalyst and which is N-(n-hexadecyl)formamide, N-di-n-acetamide or an N,N-dialkylcarboxamide, wherein the N,N-dialkylcarboxamide forms a phase boundary between the solvent and the extraction agent during mixing with the solvent.