English
Español
tiếng việt
русский
Highly selective bismuth-based catalyst for low-temperature oxidation reactions.
Thermally stable up to 350 °C, ensuring consistent performance under industrial process conditions.
Low toxicity profile compared to traditional heavy-metal catalysts, supporting safer handling and regulatory compliance.
Excellent dispersion on silica or alumina supports, enabling uniform active-site distribution.
Resistant to sulfur poisoning, maintaining catalytic activity in feedstocks with trace sulfur impurities.
Acrylate ester synthesis via selective oxidation of propylene glycol derivatives.
Production of fine chemical intermediates including aldehydes and lactones.
Catalytic dehydrogenation in pharmaceutical API manufacturing processes.
Green oxidation of biomass-derived platform molecules (e.g., furfural to furoic acid).
Co-catalyst in hybrid systems for selective C–H activation in specialty polymer precursors.
| Chemical Type | Bismuth oxide-based heterogeneous catalyst |
| Product Form | Powder (supported on high-surface-area γ-alumina) |
| Appearance | Grayish-white free-flowing powder |
| Bismuth Content (as Bi₂O₃) | 12–15 wt% (typical) |
| BET Surface Area | 180–220 m²/g |
| Particle Size (D₅₀) | 25–40 μm |
| Primary Applications | Selective oxidation, dehydrogenation, green chemistry synthesis |
| Storage Conditions | Store in cool, dry place; protect from moisture and strong oxidizers |
Q1: What is the primary application of DY-20 Bismuth Catalyst?
A: DY-20 is specifically formulated as a low-toxicity alternative to traditional tin-based catalysts for polyurethane foam production, particularly in flexible slabstock and molded foam systems where reduced environmental and handling concerns are prioritized.
Q2: How does DY-20 compare to dibutyltin dilaurate (DBTDL) in terms of catalytic activity?
A: DY-20 exhibits balanced gelling and blowing catalysis, with slightly lower overall reactivity than DBTDL—making it suitable for formulations requiring extended cream time and improved flow characteristics without compromising full cure development.
Q3: Is DY-20 compatible with common polyol and isocyanate systems used in industrial PU manufacturing?
A: Yes, DY-20 demonstrates broad compatibility with conventional polyester and polyether polyols, as well as aromatic isocyanates such as MDI and TDI. It remains stable in standard storage conditions and does not induce premature gelation or phase separation under typical formulation practices.
Q4: What safety and handling advantages does DY-20 offer over traditional heavy-metal catalysts?
A: As a bismuth-based catalyst, DY-20 avoids the reproductive toxicity and regulatory restrictions associated with organotin compounds. It presents lower acute toxicity, reduced dermal absorption risk, and aligns with industry trends toward more sustainable and worker-friendly processing aids.
Q5: What is the recommended dosage range for DY-20 in standard PU foam formulations?
A: DY-20 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the total polyol component—depending on desired reactivity profile, foam density, and co-catalyst strategy. Optimal dosage should be determined through small-scale trials under actual production conditions.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
