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Highly selective low-temperature water-gas shift (WGS) catalyst optimized for hydrogen production efficiency.
Enhanced sulfur tolerance enabling stable operation in feed streams with trace H₂S impurities.
Robust thermal and mechanical stability under dynamic load cycling and frequent start-up/shut-down conditions.
Low-pressure drop design suitable for both fixed-bed and modular reactor configurations.
Pre-sulfided formulation eliminates need for on-site sulfidation, reducing commissioning time and safety risk.
Hydrogen production units in refineries and petrochemical plants.
On-purpose hydrogen generation for ammonia synthesis and methanol production.
Carbon capture and utilization (CCU) and blue hydrogen facilities with syngas conditioning.
Hydrogen supply for fuel cell applications requiring high-purity H₂.
Small-scale distributed hydrogen generation systems with space and footprint constraints.
| Chemical Type | Copper–zinc oxide–alumina-based low-temperature shift catalyst |
| Product Form | Extrudates (cylindrical pellets) |
| Appearance | Gray-black, free-flowing granular solid |
| Primary Applications | Low-temperature water-gas shift reaction in hydrogen and syngas processing |
| Key Features | Pre-sulfided, sulfur-tolerant, low-temperature active, high selectivity |
| Operating Temperature Range | 180–260 °C |
| Recommended Space Velocity | 1,500–4,000 h⁻¹ (dry gas basis) |
| Storage Requirement | Dry, inert atmosphere; avoid exposure to moisture and air prior to use |
Q1: What is the primary function of ShiftMax 207 in polyurethane systems?
A: ShiftMax 207 is a selective amine-based catalyst designed to promote the urethane reaction (isocyanate–polyol coupling) while minimizing side reactions such as trimerization or urea formation. It enables precise control over gel time and foam rise profile, particularly in flexible slabstock and molded PU foams.
Q2: How does ShiftMax 207 compare to traditional tertiary amine catalysts in terms of odor and volatility?
A: ShiftMax 207 is formulated to offer significantly lower volatility and reduced amine odor compared to many conventional low-molecular-weight tertiary amines. Its tailored molecular structure contributes to improved handling safety and better compatibility with low-emission foam manufacturing requirements.
Q3: Is ShiftMax 207 suitable for use in water-blown or low-VOC polyurethane formulations?
A: Yes — ShiftMax 207 is widely used in water-blown flexible foam systems where balanced reactivity and low volatile organic compound (VOC) contribution are critical. It supports formulation strategies aimed at reducing overall emissions without compromising processing window or final foam performance.
Q4: Can ShiftMax 207 be blended with other catalysts in PU systems?
A: Yes, ShiftMax 207 is fully compatible with common co-catalysts such as delayed-action amines, metal carboxylates, and other selectivity-enhancing additives. Blending allows formulators to fine-tune cream time, rise behavior, and cure kinetics across diverse processing conditions.
Q5: What are the recommended storage and handling conditions for ShiftMax 207?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and strong oxidizing agents. Keep containers tightly closed when not in use to prevent moisture uptake and maintain catalytic activity. Standard industrial PPE — including gloves and eye protection — is recommended during handling.
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E-mail: wangxingqiang@ericwchem.com
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