◼PRODUCT DESCRIPTION

Conventional Pd/Al203 dehydrogenators are prone to CO poisoning in high-concentration CO gas. H846 dehydrogenator has CO poisoning resistance and can remove hydrogen at a temperature far below the CO disproportionation reaction temperature.

◼WORKING   PRINCIPLE

2CO+02→2CO2    2H2+O2→2H₂

◼APPLICATION  AREA

This GR-846 de hydrogenator has unique performance in resisting CO poisoning. It can be used for de hydrogenation of coal gas, synthesis gas, and high-concentration CO gas. It is especially suitable for de hydrogenation of raw gas such as synthetic DMF, coal-to- ethylene glycol, TDI, dimethyl oxalate, and dimethyl carbonate.

◼Why do traditional Pd/Al₂O₃ catalysts easily deactivate in high CO atmospheres? How does GR-846 solve this problem?

Conventional catalysts are poisoned by strong CO adsorption on active sites, hindering the H₂ reaction. GR-846 modifies the active sites and support structure to reduce CO adsorption and enhance H₂ selective oxidation, maintaining high activity in CO-rich environments.

◼What specific industrial scenarios is GR-846 applicable to?

It is particularly suitable for the dehydrogenation process of raw gas in processes such as synthesis gas, coal gas, and coal-to-ethylene glycol, DMF, TDI, dimethyl oxalate, and dimethyl carbonate. It can effectively remove H₂ and ensure the safety and reaction efficiency of catalysts in subsequent work sections.

◼Does the catalyst need to be used within a specific temperature range?

Yes, GR-846 operates stably in a moderate temperature range and is typically below the temperature at which CO disproportionation occurs (2CO → C + CO₂), thus avoiding carbon deposition and maintaining long-term catalyst activity.

◼What practical benefits can using GR-846 bring to customers?

Its main benefits include: reducing the frequent catalyst replacement due to CO poisoning and lowering operating costs; improving product gas purity and protecting downstream precious metal catalysts; extending the unit operation cycle and improving overall production efficiency.

◼Can this catalyst be used for dehydrogenation under oxygen-free or low-oxygen conditions?

No. This catalyst relies on oxygen as the oxidant for hydrogen and requires an oxygen-containing atmosphere to catalyze the dehydrogenation reaction. If the feed gas is oxygen-free, consider adding an appropriate amount of air or oxygen.