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 8):
The method as claimed in  claim 1 , characterized in that vaporous formic acid formed in the gas, more particularly before the replacement of the solution-contacting gas ( 18 ) by fresh gas ( 18 ), is absorbed from the gas ( 18 ) by means of an absorbent suitable for absorbing formic acid, more particularly a linear alcohol, more particularly 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol or 1-decanol, or an amide, more particularly an N,N-dialkylcarboxamide, more particularly dipentylformamide, N\u2014(N-hexadecyl)formamide, N,N-di-n-butylformamide (DBFA), N-di-n-acetamide, N-methyl-N-heptylformamide, N-n-butyl-N-2-ethylhexylformamide or N-n-butyl-N-cyclohexylformamide, and is subsequently desorbed therefrom, or is absorbed from the gas ( 18 ) by a base, more particularly an aqueous solution of NaOH or KOH, and the resulting salt solution is led off or is condensed at the vessel ( 10 ) or outside the vessel ( 10 ), where a condensate formed as a result is led back into the vessel, supplied to an extraction, more particularly by means of one of the stated absorbents, to separate the formic acid from the water contained therein, or led off for the separation of the formic acid.

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): 0.674743437727327
- 35 USC 102 Novelty (BERT): 0.5174331253572254
- Combined Prediction Score: 0.6590124064903169
- Mean Citation Score: 202.150074
- Max Citation Score: 257.4422
- Similarity Product: 180.7785663279772

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