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Aromatics Technology

Chevron Phillips Chemical’s Aromax® Technology is the premier on-purpose benzene production technology.

This technology, paired with the appropriate feedstock, provides a superior ability to convert light hydrocarbons to aromatics and hydrogen. It is best suited to upgrade low-value feedstocks and/or for addressing a hydrogen (H2) shortage.


The Aromax® Process selectively converts light paraffins and naphthenes to hydrogen and aromatic products utilizing conventional fixed-bed reforming equipment. The following are fast facts about the Aromax® Process:

  • First reforming process based on a zeolitic catalyst
  • Best suited for converting C6-C8 hydrocarbons
  • Exceptional selectivity for converting C6 and C7 paraffins and naphthenes to benzene, toluene and hydrogen
  • Process includes a high-efficiency sulfur control system to eliminate catalyst poisoning by sulfur
  • Toluene extraction may or may not be required
  • Proprietary catalyst technology
Aromatics process diagram


  • 1980
    Chevron Corporation acquires rights to develop L-zeolite reforming (Aromax® Technology).
  • 1981–1988
    Catalyst preparation optimized.
    Catalyst manufacturing scale-up completed.
    Extensive testing in four pilot plants (yields, fouling rates, process conditions, catalyst protection, procedures).
  • 1989
    Semi-works startup.
    Testing and development to address carburization issue.
  • 1992
    Startup of first commercial Aromax® Technology unit (Licensee).
  • 1993
    Startup of world scale Aromax® Technology unit at Chevron Phillips Chemical’s Pascagoula, Mississippi facility.
  • 1995
    Retrofit of semi-regen reformer to Aromax® Technology at Chevron Phillips Chemical’s Puerto Rico CORE facility.
  • 1999
    Startup of world-scale Aromax® Technology unit at Saudi Chevron Phillips Chemical; commercialization of second-generation Aromax® Catalyst, providing superior performance with heavier feedstocks and capital/operating cost reductions.
  • 2000–2003
    Catalyst development and optimization.
  • 2004
    Announcement of new licensee for Aromax® Technology with expected startup in 2006.
  • 2005
    Chevron Phillips Chemical’s Pascagoula, Mississippi facility converted to second-generation Aromax® Catalyst.


Aromax Technology yield advantage graph

Chevron Phillips Chemical’s Aromax® Technology is the premier on-purpose benzene production technology.

  • High yield of benzene, toluene, and hydrogen from C6/C7 naphtha
  • Enables the use of lower-priced paraffinic naphtha
  • Sulfur and carburization control
  • 16 years of commercial experience
  • Proprietary sulfur and carburization control technology


We engage in a limited and highly selective licensing strategy for the Aromax® Technology. The key drivers behind licensing the proprietary technology include:

  • Geographic fit
  • Feedstock availability/suitability
  • Discounted product offtake or equity position by Chevron Phillips Chemical

Licensees of Aromax® Technology include:

Company (Startup) Plant Location
Compañía Espanola de Petróleos, S.A. Spain
Saudi Chevron Phillips Company (1999) Saudi Arabia
Chevron Phillips Chemical Company LP (1993) Mississippi
Idemitsu Petrochemical Company (1992) Japan

Technical Service

By licensing our technology, licensees have direct access to our technical resources around the globe. This relationship enables licensees to consult with top researchers and engineers to assist in:

  • Catalytic development and improvements
  • Developing improved process technologies
  • Exploring lower cost routes for manufacturing

Getting Started

Our technology package typically includes:

  • A premises kickoff meeting
  • An orientation meeting
  • Technology manuals
  • Laboratory analysis manuals
  • A process design package
  • Review of process design package with licensee
  • Technical assistance during mechanical design and construction of plant
  • Review of mechanical flow sheets
  • Hazop assistance
  • Training of licensee operating and laboratory personnel
  • Plant inspection
  • Plant startup assistance

We continue to evaluate new licensees and partners on a selective basis. Strategic licensing decisions are made based on geographic and company specific information.

Companies wishing to expand their petrochemical capabilities can inquire about licensing our technology by filling out the following form.

You are required to check the "I agree to the Chevron Phillips Chemical Terms and Conditions" checkbox before submitting. Read more about our Terms and Conditions.