Modifying method for porous substrate and modified porous substrate
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- IND TECH RES INST
- Publication Date
- 2013-07-03
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Abstract
Description
technical field
[0001] The invention relates to a method for modifying a porous substrate and the modified porous substrate, in particular to a method for modifying a porous substrate applicable to gas separation. Background technique
[0002] Hydrogen energy has low environmental hazards and can be continuously recycled and utilized. It has become a promising new energy source in recent years. Steam recombination is the main hydrogen production reaction, however, the steam recombination reaction is a highly endothermic reaction, which requires very high reaction temperature to achieve sufficient conversion due to thermodynamic constraints. When the reaction pressure is 1000kPa and the water / methane ratio is 3, the required reaction temperature is 850°C to achieve 90% methane conversion. If 90% of the hydrogen can be removed in time in the steam reforming reaction, the required reaction temperature is only 500°C. Palladium or its alloy membrane can be used to separate and ...