一种用于裂解富碳天然气制备类石墨碳的复合催化剂及其应用方法
By using a composite catalyst composed of a low-melting-point metal matrix, reversible valence metal compounds, and metal halide salts, carbon-rich natural gas can be cracked in situ within the wellbore. This solves the problems of easy catalyst deactivation and uncontrollable carbon structure, and achieves efficient generation of highly ordered graphite-like carbon and highly selective hydrogen.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-04-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing catalysts are prone to deactivation under high temperature and pressure, making it difficult to control the preparation of graphite-like carbon structures. Furthermore, they lack selectivity in complex well environments and are prone to side reactions. Traditional molten metal catalysts are easily oxidized and deactivated in the presence of carbon dioxide.
A composite catalyst consisting of a low-melting-point metal matrix, reversible valence metal compounds, and metal halide or carbonate is used to in-situ crack carbon-rich natural gas in the wellbore through multiphase synergy, thereby creating a micro-electrochemical reaction environment and promoting the generation of graphite-like carbon.
Highly ordered graphite-like carbon is stably generated under high temperature and high pressure conditions in wellbore, improving hydrogen selectivity, suppressing side reactions, and increasing the added value of the product.
Smart Images
Figure CN122006756B_ABST