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Highly selective adsorption for sulfur compounds, especially mercaptans and sulfides, in hydrocarbon streams.
Optimized pore structure and surface chemistry for rapid kinetics and deep sulfur removal down to sub-ppm levels.
Excellent thermal and mechanical stability under cyclic regeneration conditions typical in fixed-bed operations.
Low dust generation and high attrition resistance, ensuring long service life and minimal pressure drop increase.
Sulfur-loaded material is non-hazardous and suitable for safe off-site disposal or metal recovery.
Pretreatment of FCC naphtha and hydrotreated gasoline for downstream sulfur-sensitive processes (e.g., catalytic reforming).
Polishing step in gasoline desulfurization units to meet ultra-low-sulfur gasoline (ULSG) specifications.
Removal of odor-causing sulfur species from LPG, propane, and butane streams prior to commercial distribution.
Protection of precious-metal catalysts in petrochemical feed purification systems.
Final sulfur polishing in biofuel blending components (e.g., FAME, renewable naphtha) to ensure fuel compatibility.
| Chemical Type | Regenerable transition metal oxide-based adsorbent |
| Product Form | Cylindrical extrudates (1.2 mm diameter) |
| Appearance | Gray to dark gray solid pellets |
| Primary Applications | Gasoline, LPG, and light naphtha desulfurization |
| Key Features | High sulfur capacity, low breakthrough, regenerable |
| Benefits | Extended cycle life, reduced operational downtime, compliance with <50 ppm sulfur regulations |
| Storage Conditions | Store in dry, well-ventilated area; protect from moisture and direct sunlight |
| Handling Precautions | Use NIOSH-approved dust mask during handling; avoid inhalation of fine particles |
Q1: What is the primary function of Puristar R3-12 in polymer processing?
A: Puristar R3-12 is a highly selective adsorbent designed to remove low-molecular-weight impurities—such as residual catalysts, oxidation by-products, and trace polar contaminants—from polyolefins and other thermoplastic resins during melt processing or compounding.
Q2: Is Puristar R3-12 compatible with high-temperature polymer processing conditions?
A: Yes, Puristar R3-12 exhibits excellent thermal stability and maintains structural integrity under typical polyolefin extrusion and compounding temperatures, generally up to 300 °C, without significant decomposition or volatilization.
Q3: How is Puristar R3-12 typically incorporated into polymer formulations?
A: It is commonly introduced via masterbatch dilution or direct dry-blend addition prior to extrusion. Dosage depends on formulation requirements and contaminant load but generally ranges from 0.1% to 2% by weight of the final compound.
Q4: Does Puristar R3-12 affect the mechanical or rheological properties of the host polymer?
A: When used within recommended dosage ranges, Puristar R3-12 has minimal impact on key mechanical properties such as tensile strength, elongation, or melt flow index—provided proper dispersion is achieved during compounding.
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