PATENT CLAIM ANALYSIS

Application Number: 15941306
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["502", "300000"]

Abstract:
The invention has as its object a method for preparation of catalysts based on cobalt substrates, implementing a concatenation of stages for impregnation, drying and calcination under particular conditions. The invention also relates to the use of said catalysts in Fischer-Tropsch synthesis methods.

Claim (Index 1):
Method for preparation of a precatalyst that contains a porous substrate and cobalt in oxide form, with the cobalt content being between 5 and 40% by weight in relation to the weight of the precatalyst, with said method comprising at least the following stages:\n A first stage a) for impregnation of the porous substrate, by bringing into contact at least one solution that comprises at least one inorganic cobalt precursor at a temperature of between 5 and 40\u00b0 C., with said impregnation making possible the deposition of 2 to 15% by weight of cobalt in relation to the weight of the final precatalyst, A first stage b) for drying the intermediate precatalyst that is obtained at the end of the impregnation stage a), said drying is implemented in the presence of a gas that comprises air and/or an inert gas, with a flow rate of gas per hour and per gram of intermediate precatalyst that is obtained from stage a) (GHSV) of between 0.1 and 1.5 Nl/h/g, and at a temperature of between 60 and 110\u00b0 C., A first stage c) for calcination of the intermediate precatalyst that is obtained at the end of stage b), said calcination is implemented in the presence of a gas that comprises air and/or an inert gas, with a flow rate of gas per hour and per gram of intermediate precatalyst that is obtained from stage b) (GHSV) of between 0.1 and 1.5 Nl/h/g, and at a temperature of between 200 and 550\u00b0 C., A final impregnation stage d) of the intermediate precatalyst that is obtained at the end of a preceding calcination stage, by bringing said intermediate precatalyst into contact with at least one solution that comprises at least one inorganic cobalt precursor at a temperature of between 5 and 40\u00b0 C., with said impregnation making it possible to reach the targeted cobalt content of the precatalyst, A final drying stage e) of the intermediate precatalyst that is obtained at the end of the impregnation stage d), said drying is implemented in the presence of a gas that comprises air and/or an inert gas, with a flow rate of gas per hour and per gram of intermediate precatalyst that is obtained from stage d) (GHSV) of between 1.8 and 6.0 Nl/h/g, and at a temperature of between 110 and 160\u00b0 C., A final calcination stage f) of the intermediate precatalyst that is obtained at the end of stage e), said calcination is implemented in the presence of a gas that comprises air and/or an inert gas, with a flow rate of gas per hour and per gram of intermediate precatalyst that is obtained from stage e) (GHSV) of between 1.5 and 6.0 Nl/h/g, at a temperature of between 200 and 550\u00b0 C.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 90.0
- Lexical Diversity: 1.23684
- Patent Class: 502.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13905575', '13903010', '13201715', '10306874', '14130287']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7407716064407146
- 35 USC 102 Novelty (BERT): 0.5084317934645592
- Combined Prediction Score: 0.717537625143099
- Mean Citation Score: 237.901402
- Max Citation Score: 252.23201
- Similarity Product: 181.02162269345283

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