PATENT CLAIM ANALYSIS

Application Number: 16069262
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["518", "717000"]

Abstract:
A method for carbon dioxide direct hydrogenation to gasoline-range hydrocarbons is provided in this invention. Under the reaction conditions of 250-450° C., 0.01-10.0 MPa, 500-50000 mL/(h·g cat ) of feedstocks, 0.5-8 molar ratio of H 2  to CO 2 , the mixture of carbon dioxide and hydrogen may be directly converted to gasoline-range hydrocarbons over a multifunctional hybrid catalyst. The multifunctional hybrid catalyst comprises: iron-based catalyst for carbon dioxide hydrogenation as the first component, one, two or more of zeolites optionally modified by metal as the second component. In this method, a per-pass conversion of CO 2  may achieve more than 33%, the methane selectivity in the hydrocarbon products is less than 8%, the selectivity of gasoline-range hydrocarbons with carbon numbers from 5 to 11 in the hydrocarbon products is more than 70%. The obtained gasoline-range hydrocarbons exhibit high octane number due to its composition comprising isoparaffins and aromatics as the major components.

Claim (Index 3):
The method according to  claim 1 , wherein the iron-based catalyst for carbon dioxide hydrogenation comprises Fe 3 O 4  as a main active component, and optionally, no more than 30% by weight, an oxide promoter selected from the group consisting of sodium oxide, potassium oxide, manganese oxides, copper oxide, zirconium oxide, vanadium oxides, zinc oxide, cerium oxide, and combinations thereof.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 95.0
- Lexical Diversity: 1.72
- Patent Class: 518.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16085397', '14351920', '10511390', '13140240', '13504929']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7132474921240796
- 35 USC 102 Novelty (BERT): 0.5464207777266906
- Combined Prediction Score: 0.6965648206843407
- Mean Citation Score: 242.49271600000003
- Max Citation Score: 302.24277
- Similarity Product: 236.6127423385728

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

Dataset: test