A wide variety of commercial zeolite products and our capability to customize zeolites for specific applications give you the flexibility to optimize your process for maximum success. Our materials have been used as catalysts in refinery, petrochemical, and fine chemical processes, as adsorbents and catalysts in environmental applications, as molecular sieves in size separation applications, and as multifunctional materials in a variety of applications.

Aggressive investment in research, development, and capital improvements helps us keep pace with our customers' developing needs. The resulting worldwide network of manufacturing plants, research and development laboratories, and leading technical specialists makes us a world-class supplier of zeolite products and a valued resource for our customers. It's easy to understand why many major international companies have chosen Zeolyst International as a partner for their strategic product and process development programs.

Shell Global Solutions

Shell Global Solutions, part of Royal Dutch Shell plc, provides consultancy, technical services and research and development (R&D) expertise to the energy and processing industries worldwide. The organisation serves a diverse range of customers in areas that include exploration and production, refining, gas and liquefied natural gas as well as processing industries such as chemicals, metals, pulp and paper, power, mining and automotive. Shell Global Solutions assist in the search for improvement by providing solutions that are designed to improve margins, extract more from existing assets, protect people and the environment.

CRI/Criterion Inc.

CRI/Criterion Inc. is a subsidiary of Shell Global Solutions and a major supplier of refining and petrochemical catalysts, processes and know-how. Serving all segments of the chemicals and petrochemicals industries, the company’s research laboratories, development facilities, manufacturing plants and business units are dedicated to supplying the most efficient and cost-effective catalysts to customers around the world.

PQ Corporation

PQ Corporation is a leading producer of silicate, zeolite and other performance materials to the detergent, pulp and paper, chemicals, petroleum, water treatment, construction and beverage markets. The company is dedicated to continually building on its global leadership in providing customer solutions through its expertise in silica-based chemistry, performance materials and highway safety. PQ operates in 19 countries around the globe.


Research and development

Zeolite development and scale-up are conducted at R&D Center of PQ Corporation;  Hydrocracking and petrochemical catalysts are developed at Shell Technology Centers.

Quality assurance

Zeolyst is ISO 9001 Certified – We apply "Continuous Quality Improvement" philosophy to meet and exceed all customer expectations.


State-of-the-art zeolite manufacturing facilities are located in Kansas City, KS, USA and Delfizjil, The Netherlands.