Specialty Catalysts

Alongside a variety of optimization services provided in collaboration with its partners, Zeolyst has excelled in helping numerous plants maximize returns from their existing equipment. This success extends to flexibly navigating market fluctuations for paraxylene, benzene, and toluene. Zeolyst's track record positions it as a key Aromatics technology partner for some of the largest paraxylene producers globally.

Zeolyst International presents a cutting-edge portfolio of catalysts tailored for the industry, designed to enhance value . Our catalysts cover next-generation trans-alkylation, ethylbenzene dealkylation (EBD), ethylbenzene reforming (EBR), and paraffin isomerization, delivering outstanding activity and selectivity. These catalysts empower operators to optimize economic efficiency and actively contribute to reducing the carbon footprint.

ATHOS-3 represents the cutting-edge in paraffin isomerization catalysts, designed for treating light straight-run naphtha streams to generate a high-octane gasoline blending component. Distinguishing itself from earlier generations, this catalyst provides the advantage of lower operating temperatures or higher throughput at similar temperatures. The ability to operate at lower temperatures not only conserves energy but also enhances the octane number and optimizes liquid yields.

Additionally, the versatility of this technology allows for its adaptation to reverse isomerization when the need arises for straight chains.

ATA-41 catalyst is used in aromatics complexes in the toluene disproportionation or trans-alkylation unit when conversion of toluene and C9+ aromatics to mixed xylenes and benzene is required. Processing C9+ aromatics in a trans-alkylation unit shifts the chemical equilibrium away from benzene production and towards xylene production. The trans-alkylation process provides a means of producing more mixed xylenes from low-value toluene and heavy aromatics. The incorporation of a trans-alkylation unit into an aromatics complex can more than double the yield of paraxylene from naphtha feedstock.

The ATA series is an established leader in trans-alkylation offering highly stable performance in the treatment of heavy feedstocks and a 20+ year track record. In that time 1,700 tons has been loaded into 31 units, with a zero-failure rate on start-up or in operation.

ZATARIS-21 is an EBD catalyst, deployed as a dual-bed catalyst system, with high activity. It offers low hydrogen consumption and almost 100% aromatic ring retention, making it well suited to low-paraxylene feeds.

As a drop-in solution, ZATARIS-21 furthers the decoupling of EBD and xylene isomerisation functions, thus promoting exceptional preservation of the aromatic content of the feed while offering high activity for reduced energy consumption. Depending on the feed, operating conditions, product requirements and profit considerations, the ratio of each catalyst per bed can be tailored to provide greater feed flexibility.

OparisNext is the latest-generation EBR catalyst for paraxylene producers looking to maximise margins and strengthen their competitive position. It is used in aromatics complexes when conversion of ethylbenzene to xylenes is required, in combination with isomerization of xylenes into the equilibrium composition.

OparisNext contains the latest patented zeolite technology, which is based on more than 30 years of EBR operations. In that time, the Oparis series of catalysts has been loaded in 26 units and never had a failure on start-up, or in operation, and has had 20+ successful regenerations.

Get in touch with our customer service team to learn more about how Specialty Catalysts can work for you.