PATENT CLAIM ANALYSIS

Application Number: 16318679
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-09
Patent Classification: ["562", "523000"]

Abstract:
The invention relates to a method for catalytically producing formic acid and regenerating the catalyst used in the process. A vanadyl ion, vandate ion, or polyoxometallate ion, which is used as the catalyst, of the general formula [PMo x V y O 40 ] n−  is brought into contact with an alpha hydroxyl aldehyde, an alpha hydroxy carboxylic acid, a carbohydrate, a glycoside, or a polymer, which contains a carbon chain and which comprises at least one OH group that is bound to the carbon chain as a substituent in a repeating manner and/or an O, N, or S atom contained in the carbon chain in a repeating manner, in a liquid solution ( 12 ) in a vessel ( 10 ) at a temperature above 70° C. and below 160° C., wherein 6≤x≤11, 1≤y≤6, 3<n<10, and x+y=12, where n, x, and y is each a whole number. The catalyst reduced in the process is returned to its starting state by oxidation. For this purpose, the solution ( 12 ) is brought into contact with a gas ( 18 ) which contains a volume percent of oxygen of at least 18% at a pressure of at least 2 bar and maximally 16 bar by means of a mixing device or via a liquid-non-permeable gas-permeable membrane. CO and/or CO 2  resulting during the reaction and merging with the gas ( 18 ) is discharged in such a quantity that the volume percent of CO and CO 2  combined does not exceed 80% in the gas ( 18 ).

Claim (Index 14):
The method as claimed in  claim 1 , characterized in that the catalyst and the formic acid are separated from the solution ( 12 ) or from a portion of the solution ( 12 ) that is subsequently resupplied to the solution ( 12 ), by means of at least one polar organic extractant which extracts the formic acid and the catalyst and which, on mixing with the solution ( 12 ), forms a phase boundary between the solution ( 12 ) and the extractant, more particularly with the pH being maintained at not more than 3, more particularly not more than 2.5, in the solution ( 12 ), where the extractant is one which, for extraction of the catalyst present at a concentration of 1.5 wt % in water, has a partition coefficient for the catalyst at 40\u00b0 C. that is greater by a factor of at least 7 than a partition coefficient for extraction of the formic acid present at a concentration of 5 wt % in water at 40\u00b0 C., and where the extractant before the extraction is saturated with the catalyst or where the separated catalyst is separated from the extractant and resupplied to the liquid solution ( 12 ) in the vessel ( 10 ).

Metadata:
- Claim Count in Document: 4.0
- Percentile: 99.0
- Lexical Diversity: 2.0942
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16318673', '13823453', '15544857', '10295765', '12311954']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6755583407390768
- 35 USC 102 Novelty (BERT): 0.5130978452033415
- Combined Prediction Score: 0.6593122911855034
- Mean Citation Score: 202.150074
- Max Citation Score: 257.4422
- Similarity Product: 193.3402704313517

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test