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Styrene Catalyst Portfolio

Styrene monomer is an essential base chemical for the polymer industry. It is most commonly produced via catalytic dehydrogenation of ethyl benzene (EB).

The EB feed is mixed with superheated steam, and the gas is passed over the catalyst bed in a two- or three-reactor configuration. The process consumes vast amounts of heat, and must be operated under reduced partial pressures.

The key to economically and environmentally sustainable styrene production is the ethylbenzene (EB) dehydrogenation catalyst. Clariant’s StyroMax® catalyst series provides best-in-class performance, and suits all EB dehydrogenation technologies.

For plants experiencing reactor pressure drop, we also offer StyroMax rib-shaped catalysts, with a unique design to drastically reduce pressure drop by 30% to 50%. Learn more about our unique technology.

Adding Customer Value


> 1000

production cycles
using Clariant styrene catalyst


regional engineering offices
located close to our customers


years of improving styrene yields

and lowering steam consumption

Choose Your StyroMax

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StyroMax UL3 is the first ethylbenzene dehydrogenation catalyst to offer ultra-high selectivity and ultra-low steam-to-oil (S/O) ratios. This makes it the most cost-efficient styrene catalyst globally.

It is also highly resistant to coke formation, and proven to promote reliable styrene production with the lowest steam consumption.

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StyroMax UL1 features innovative proprietary technology that maintains outstanding robustness, making the styrene catalyst a game-changer for units operating at steam-to-oil (S/O) ratios between 1.1 and 1.35.

The highly active and selective ethylbenzene dehydrogenation catalyst offers impressive performance that quickly adapts to changes in operating conditions.

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StyroMax 9 is the latest generation of our styrene catalystsleading the global market for units with steam-to-oil (S/O) ratios above 1.3

Compared to previous catalysts, it offers much higher activity, and far greater resistance to deactivation.  Producers benefit from lower steam costs, higher yields, and longer production cycles.



Solutions that Drive Performance

Styrene Catalysts
StyroMax Rib-Shaped Catalysts
Discover how our exclusive rib shape minimizes pressure drop to maximize productivity in styrene production
Styrene Catalysts
Technical Services
Let our experts help you raise daily production rates, increase yields, extend cycle length, and reduce steam and energy consumption
Styrene Catalysts
Customer Events
Join our seminars, webinars, and workshops to learn about the latest trends and most innovative styrene solutions
Styrene Catalysts
StyroMax Production Overview
Explore our high-performance catalysts for more economical and sustainable styrene production


November 30, 2022
Clariant's NiSat® 310 catalyst adds polishing touch to Evonik-tkIS HPPO process at propylene oxide plant in China
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Clariant Catalysts has teamed up with Evonik and thyssenkrupp Industrial Solutions (tkIS) in a major propylene oxide project for one of China’s largest rubber producers. Qixiang Tengda is one of the leading global producers of carbon-four chemical products, such as methyl ethyl ketone and maleic anhydride. Expanding into the carbon-three value chain, the company’s new propylene oxide plant in Zibo city, Shandong province, relies on Evonik-tkIS HPPO technology to convert propylene in the presence of hydrogen peroxide (HP) directly into propylene oxide (PO). The plant will have an annual production capacity of 300,000 tons. more
October 20, 2022
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Driven by its vision to enable a circular economy, Clariant launched an innovative portfolio of flexible, custom solutions for the emerging market of chemical plastics recycling. more
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