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High-Performance Catalysts for Production of Phthalic Anhydride (PA)

OxyMax™ PA Series

OxyMax™ PA catalysts offer high performance in selective oxidation of o-xylene, naphthalene and mixed feedstocks to phthalic anhydride (PA). They are produced with Clariant’s proprietary fluid-bed coating process. Proprietary promotors optimize activity and selectivity in a multi-layer catalyst design. This enables catalyst solutions to be tailored to individual plant operating conditions and needs.

Benefits
  • High phthalic anhydride yields, with slow yield decline 
  • Excellent PA quality
  • Low formation of carbon oxides (COx) 
  • Multi-layer design with up to five catalyst layers
  • Starter layer ensures early stabilization of hotspot and long catalyst lifetime
  • Tailored designs and catalyst types to suit each plant and operating condition
  • Options available for all feedstocks (ortho-xylene, naphthalene, mixed feeds)
Specifications
Product compositionPromoted titaniumdioxide and vanadium-pentoxide
ShapeRings
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