Engelhard 
Surface and materials science company. Products include environmental and process catalysts.
http://www.engelhard.com/Süd-Chemie Group 
Global surface science company specializing in adsorbents and catalysts, for markets including refining and petrochemicals, commodity chemicals, environmental, and fuel cells.
http://www.sud-chemie.com/
Grace Davison 
Manufacturer of fluid cracking, hydroprocessing, and polyolefin catalysts, Raney metal catalysts, silicas, adsorbents and specialty products.
http://www.gracedavison.com/
Johnson Matthey Catalysts 
Large-scale producer of environmental, process, and fuel cell catalysts.
http://www.jmcatalysts.com/
Zeochem AG 
Manufactures molecular sieve (zeolite) adsorbents and catalysts, as well as silica gel for chromatography and desiccant applications. Headquartered in Switzerland.
http://www.zeochem.ch/
Zeolyst International 
Supplier of a wide range of zeolite catalysts and adsorbents, including custom zeolite powders, hydrocracking catalysts, and specialty catalysts.
http://www.zeolyst.com/
Catacel Corporation 
Ohio technology company offering solutions in the area of catalytic coatings, heat exchangers, and metal honeycombs, for applications in the environmental and energy sectors.
http://www.catacel.com/
Ceca Adsorbents 
Supplier of activated carbons and aluminas, synthetic zeolites, and silica gels, for use in separation, purification, and drying processes.
http://www.adsorbents.com/
GeeJay Chemicals 
United Kingdom manufacturer of desiccants: silica gel, silica gel sachets and molecular sieves.
http://www.geejaychemicals.co.uk/
Zhengzhou Gold Mountain Science And Technique Co. Ltd. 
Production, research and development of zeolite molecular sieve products.
http://www.adsorbentcn.com
Cycletrol Industries 
Producer of a range of natural odor, moisture, and mildew control products based on zeolites. Overview of products, distributors, and technical information.
http://www.cycletrol.com/
Incal Mineral 
Producer and exporter of natural clinoptilolite zeolite mined in Turkey. Overview of products and applications.
http://www.incalzeolite.com/
Pacific Mineralindo Utama 
Indonesian producer of natural zeolite in granular and powder forms. Brief overview of applications.
http://www.pacificnuzeo.com/
SafetySorb Zeolita 
Distributor of clinoptilolite natural zeolite, servicing the Americas and Japan. Overview of product grades, applications, and MSDS.
http://www.safetysorbzeolita.com/
UOP 
Supplier of molecular sieve and alumina adsorbents and custom catalysts. Detailed overview of application areas.
http://www.uop.com/
Zeo Inc. 
Producer of a range of natural zeolite products, for use in horticulture, as animal feed and filter media, and fillers. Located in Texas.
http://www.zeoinc.com/
Hengyang Chemical Research Institute 
Develops and manufacturers a range of catalysts and sorbents for desulfurization and water-gas shift in ammonia plants, as well as flavoring agent tributyl acetylcitrate.
http://www.chemacademe.com
Refoil Earth Pvt. Ltd. 
Manufacturer of bleaching clays in India, converting raw material from its own mine using dry and wet processes, for use in refining vegetable and mineral oils, animal fats, and waxes.
http://www.refoil.com
Taiyuan Xinli Chemicals Co., Ltd. 
Producer of copper-based hydrogenation catalysts used in the production of furfuryl alcohol, as well as a range of nitrate salts.
http://www.tyxlchem.com
Kocat, Inc. 
Korean producer of environmental catalysts and adsorbents for removal of CO, halogens, NOx, ozone, VOCs, and dioxins.
http://www.kocat.com/
Zhaoyuan Huiyuan Silica Gel Co., Ltd. 
Specialty manufacturer of silica gel products in China.
http://www.silicagel-hy.com/
Baoji Rock Non-Ferrous Metal Co.,Ltd. 
Researches, develops and manufactures metal catalysts.
http://www.bjrock.com/
Esspee Enterprise 
Manufacturer of silica gel in various grades, located in India.
http://silicagel.sphosting.com
Qing Dao Frank Chemical Industry International Ltd. 
Silica gel producer in China, offering over 100 specifications including micro- and macro-porous types, indicators, desiccant sachets, chromatographic sorbents, and cat litter.
http://www.silicagelchina.com
Chemicals (India) Company 
Manufactures activated alumina, activated carbon, and silica gel, as well as ferrous sulphide extrudates for metallurgical applications.
http://www.chemicalsindiacompany.com/
Symyx Technologies, Inc. 
Applies high-throughput experimentation to the discovery of new materials, including catalysts used in the manufacture of chemicals, plastics and rubbers, through collaborative research agreements.
http://www.symyx.com/
Catal International Ltd 
UK company offering products and services related to catalysts and catalytic processes, including development services, custom manufacturing, and sale of modular testing units.
http://www.catal.co.uk/
Silkem 
Manufacturer in Slovenia of synthetic zeolites, silicates and specialty aluminas. Products find use in the chemical industry, detergent manufacture, papermaking, and as refractory components.
http://www.silkem.si
Quzhou Baichuan Catalyst Co.,Ltd 
Producer of catalysts and adsorbents for reforming processes, including water-gas-shift, COS conversion, sulfur removal and methanization catalysts.
http://www.bc-catalyst.com
HRP Industries 
Manufacturer of activated fullers earth. Used for the bleaching of industrial oils, mineral oils and edible oils.
http://www.fullersearth.com/
Dalian Hongda Co., Ltd. 
Manufacturer of 3A, 4A, 5A and 13X zeolites in China. Products targeted at the natural gas and chemical industries. Summary information.
http://www.chemup.com
Shanghai Hengye Chemical Industry Co., Ltd. 
Manufacturer of molecular sieves, activated alumina, and silica gel for applications in adsorption and drying.
http://www.hyms.com.cn/new/
Catalytic Solutions, Inc. 
Develops and manufactures catalytic converters for automotive and stationary energy applications. Overview of technologies, corporate profile, and investor information. California.
http://www.catsolns.com/
Dynamic Adsorbents 
Provides sorbents for preparative chromatography at the pilot and production scale. Products include alumina, silica gels, polyamide, a pesticide-selective sorbent, as well as tubing supplies.
http://www.dynamicadsorbents.com
Wisepac Active Packaging Components Co., Ltd. 
Manufacturer of desiccants and dehumidification supplies in pouches, canisters, strips, and other formulations. China.
http://www.wisepac.com
Catalyst Products 
Provides environmental catalysis products and services.
http://www.catalystproducts.com/
Nantong Dongyang Desiccant Manufacture Co., Ltd. 
Supplier of silica gel desiccants and lime desiccants.
http://www.ntdryer.com/
Zappa Tec, LLC 
USA. Manufacturers of super absorbent polymers for the solidification of medical and industrial liquid wastes. Technical information and FAQ.
http://www.zappa-tec.com/
Degussa Catalysts 
Supplier of specialty products and services for hydrogenation, oxidation and polyolefins, including precious metal and Raney type catalysts.
http://www.degussa-catalysts.com/
CRI Catalyst Company 
Subsidiary of Shell, specializing in catalysts for refinery processes, petrochemical manufacture, hydrogen production, and environmental applications.
http://www.cricatalyst.com/