Oligomerization

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Process Technologies

AlphaButol® - Dimerization to 1-Butene

The AlphaButol® process is the industry’s benchmark for the production of high purity 1-butene via ethylene dimerization producing at date 32 % of butene-1 world capacity.

Using homogeneous catalysis, this technology produces the highest butene-1 purity on the market with a yield higher than 90 %.

40 AlphaButol® licensed with a cumulated capacity of > 1, 000,000 t/y

High purity 1-butene suitable for LLDPE and HPDE

Process simplicity and ease of operation

Commercial Bulletin

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Modular Unit

AlphaHexol™ - Trimerization to 1-Hexene

AlphaHexol™ process produces high purity 1-hexene by ethylene trimerization suitable as comonomer for Linear Low-Density PolyEthylene (LLDPE) or High-Density PolyEthylene (HDPE) production.

This oligomerization process similar to AlphaButol® technology operates in the liquid phase using a soluble catalyst system.

4 AlphaHexol™ units have been licensed

High purity 1-hexene suitable for LLDPE and HDPE

Efficient ethylene feed use

EN CN

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Modular Unit

DimEne-B® - Dimerization towards high purity synthetic C₄ fraction

DimEne-B® supports the transition of the petrochemical industry towards chemicals. DimEne-B® is part of Axens Homogeneous Catalysis Portfolio, positioned to deliver large Butene-1 production capacity in a single train configuration by ethylene dimerization. This treatment specifically focuses in capacities larger than 150-200kta of Butene-1 per train with high selectivity level.
This treatment allows also to co-produce high purity Butene-2, which can be advantageously valorized in the petrochemicals field (metathesis, INA, MEK, Butadiene…) and produce synthetic rich olefins C₄ fraction.

Axens provides also DimEne-B® associated services such as technical consulting and studies, as well as technical project, engineering work and studies including surveys in the field of C₄ fraction production.

Deliver large Butene-1 production capacity in a single train configuration

Can be configured to produce synthetic high purity n-butenes from Ethylene

Key technology to convert Ethylene to Propylene via metathesis without butenes feedstocks

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Consulting

Catalysts & Grading Materials

Catalysts

Oligomerization Catalysts

Oligomerization technologies achieve high conversions of light olefinic fractions into higher value gasoline and middle distillates in association with dedicated catalysts specially developed for these applications.

Adsorbents

Drying Series Adsorbents

Water removal applications are widely encountered in the industry sector. Activated alumina and molecular sieves stand at the forefront of the several different materials available on the market.

Adsorbents

Purification Series Adsorbents

Material specially developed to achieve your feedstock’s specification requirements.

Adsorbents

Sulfur Removal Adsorbents for Oil, Gas & Petrochemicals

Hydrogen sulfide (H₂S), COS, mercaptans or sulfides are common contaminants that must be removed from various gases and liquids such as natural gas, NGLs, LPGs, cracked gases, olefins or biogas.

Consulting, Studies & Audits

Axens offers a customized approach, including tailored studies, audits and consulting services, covering technical and operational challenges.

Unit Revamps & Retrofits

You face many challenges, which include operating in a safe, reliable and environmentally sound manner while responding to changing markets dynamics.

Customer Training

Designed for all Axens technologies, dedicated to operators & engineers, Axens offers customized training solutions to all our licensees, covering the whole range of Axens technologies.

Technical Support & Performance Management

Axens is fully committed to be your partner and provide assistance and support during your project lifecycle, from conception to start-up & running operations.

Digital Services & Applications

Axens' digital platform combines real-time data and digital solutions to optimize operations, reduce environmental impact, and lower costs while maximizing profitability. By delivering actionable insights and detailed performance reports, it enhances asset operation and performance for smarter, more efficient outcomes.

Dimersol™-X – C₄ dimerization

Axens’ Dimersol™-X process transforms butenes to octenes that are ultimately used in the manufacture of plasticizers via isononanol (isononyl alcohol), and diisononyl phthalate units.

38 Dimersol™ licensed treating various olefinic C3 and C4 cuts

Typical octenes production capacities range from 20,000 t/y to 270,000 t/y

Commercial Bulletin

Related Offer

Modular Unit

Catalysts & Grading Materials

Catalysts

Oligomerization Catalysts

Adsorbents

Drying Series Adsorbents

Water removal applications are widely encountered in the industry sector. Activated alumina and molecular sieves stand at the forefront of the several different materials available on the market.

Adsorbents

Purification Series Adsorbents

Material specially developed to achieve your feedstock’s specification requirements.

Adsorbents

Sulfur Removal Adsorbents for Oil, Gas & Petrochemicals

Hydrogen sulfide (H₂S), COS, mercaptans or sulfides are common contaminants that must be removed from various gases and liquids such as natural gas, NGLs, LPGs, cracked gases, olefins or biogas.

Consulting, Studies & Audits

Axens offers a customized approach, including tailored studies, audits and consulting services, covering technical and operational challenges.

Unit Revamps & Retrofits

You face many challenges, which include operating in a safe, reliable and environmentally sound manner while responding to changing markets dynamics.

Customer Training

Designed for all Axens technologies, dedicated to operators & engineers, Axens offers customized training solutions to all our licensees, covering the whole range of Axens technologies.

Technical Support & Performance Management

Axens is fully committed to be your partner and provide assistance and support during your project lifecycle, from conception to start-up & running operations.

Digital Services & Applications

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The EEPC 2026 Ethylene Seminar is a key European industry conference focused on the latest developments, challenges, and opportunities in the ethylene sector. The event offers a platform for industry leaders and experts to exchange insights, discuss market and regulatory trends, and strengthen professional networks. It will take place in Budapest, Hungary, from 14 to 16 October 2026