Skip to main content
Efficient Hydrogenation Catalysts for Purification of Terephthalic Acid

H2Max® Series

H2Max® catalysts are optimized for the purification of terephthalic acid (PTA) to remove impurities, such as 4-carboxybenzaldehyde (4-CBA). The process involves hydrogenation of colored by-products to water-soluble, colorless compounds in a fixed bed reactor. Thanks to the advanced design of our palladium-based catalysts, they ensure highly efficient purification of terephthalic acid, with 4-CBA content typically reduced to less than 20 ppm. The H2Max series is also a more economical solution, as it demonstrates significantly lower loss of costly palladium during operation compared to state-of-the-art catalysts.


We offer a choice of PTA purification catalysts to suit different plant requirements:

• H2Max® 50: Classical grade PTA catalyst with reliable palladium retention
• H2Max® HD: Higher grade with enhanced palladium retention due to patented dispersion and distribution of the precious metal on the support structure
Print this page
  • Precious-metal-based catalysts on granular carbon support with highly dispersed Pd, assuring activity remain stable for a long time 
  • Efficient: The purified terephthalic acid (PTA) has typically less than 20 parts-per-million (ppm) of 4-carboxybenzaldehyde (4-CBA)
  • Cost-effective: Low loss of expensive palladium from the catalyst during operation
Product compositionPalladium on carbon carrier
Size4-8 mm mesh ( = 2.36 - 4.75 mm )
There are no documents available for this product.
Contact Us
Please contact us for safety and regulatory details or the Material Safety Data Sheet (MSDS).

Download File

Login Required

Log in or register to ClariHub for our full set of ingredient documentation, formulations and more resources!

Page summary

Summarization in progress