I. Principle of Methanol-to-Hydrogen Conversion
Methanol and water are mixed in a specified ratio, then vaporized and superheated. Under certain temperature, pressure, and flow conditions, the mixture undergoes methanol reforming and water-gas shift reactions over a catalyst, ultimately producing a mixed gas of hydrogen and carbon dioxide.
The methanol-water reforming reaction is a complex gas-solid catalytic reaction system involving multiple components and multiple reactions.
The main reactions are:
CH₃OH ⇔ CO + 2H₂ -90.7 kJ/mol
CO + H₂O ⇔ CO₂ + H₂ +41.2 kJ/mol
The overall reaction is:
CH₃OH + H₂O ⇔ CO₂ + 3H₂ -49.5 kJ/mol
The single-pass conversion rate of methanol is high, and the resulting mixed gas, after treatment, is fed into fuel cells for power generation.
II. Key Technical Specifications of the Catalyst
The SCST-404 low-temperature methanol-to-hydrogen catalyst exhibits excellent performance. Under experimental conditions, multiple tests have demonstrated a high methanol conversion rate. Its main performance specifications are as follows:
| Category | Item | Parameter and Specification |
|---|---|---|
| Physical Properties | Appearance | Gray-black spheres |
| Physical Properties | Size, mm | Φ3.0～4.0 |
III. Application Areas
This catalyst is the latest product developed by Sichuan Shutai over a one-year period. It is primarily used in low-temperature methanol-to-hydrogen equipment for hydrogen production, with the produced hydrogen serving as feedstock for proton exchange membrane fuel cells (PEMFC) to generate electricity. When paired with fuel cells, it can be applied in scenarios requiring high energy density, such as unmanned aerial vehicles, automobiles, and submarines.
IV. Packaging, Storage, and Transportation
The catalyst is packed in plastic bags and then placed in plastic drums. It should be stored indoors, with strict protection against moisture, shock, and contamination by toxic substances. Rolling on the ground during handling is prohibited. Dropping from heights above 0.5 m or impact is not allowed.
Under normal conditions, the catalyst can be stored for more than one year without affecting its physical properties or activity.
The finished catalyst is packaged in plastic or iron drums lined with plastic bags. During transportation and storage, it must be protected from moisture, fire, and inversion, and strictly kept free from chemical contamination. Rolling or impact during handling is prohibited. When stored outdoors, the drums should be placed on wooden pallets at the bottom and covered with canvas for rain protection. Bulk bags can also be used for packaging upon customer request.
