Top Sites

The top ranked sites in each category. Many listings in Top Sites by Category are for specific pages or subdirectories, not for entire sites. For example, in the Reference > Maps section you'll find mapquest.com (an entire site about maps) and maps.yahoo.com (one section about maps on a larger site).

For this reason, the listings in the Top Sites by Category are ordered by Popularity of this listing, and not by the overall Traffic Rank of the site. We use the same basic traffic ranking technology used for Alexa Traffic Rank — a combination of users and page views — but apply it only to the traffic for that specific listing. To find out the Traffic Rank of any site in the Top Sites by Category directory, just click the name of the site and you'll be taken to the "Site Info" page for that site.

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Top Sites in:



  • 1

    UOP

    uop.com
    Supplier of molecular sieve and alumina adsorbents and custom catalysts. Detailed overview of a... Morepplication areas.
    From the site: UOP LLC, a Honeywell company, has been delivering cutting-edge technology to the petroleum refining, gas processing, petrochemical production and major manufacturing industries for over 90 years. The company’s roots date back to 1914, when the revolutionary Dubbs thermal cracking process created the technological foundation for today’s modern refining industry. ...

  • 2

    Johnson Matthey Catalysts

    jmcatalysts.com
    Large-scale producer of environmental, process, and fuel cell catalysts.... More
    From the site: The group’s principal activities include the manufacture of autocatalysts and pollution control systems, catalysts and components for fuel cells, pharmaceutical compounds, process catalysts and speciality chemicals; the refining, fabrication and marketing of precious metals; and the manufacture of colours and coatings for the glass and ceramics industries. Johnson Matthey Catalysts is the market identity of the ...

  • 3

    Sued-Chemie AG

    sud-chemie.com
    Germany. Manufacturers of specialty chemicals and additives for a variety of industrial applica... Moretions. Flocculants and powder products for water purification systems in nonwoven spunlace production. English and German.

  • 4

    Calgon Carbon Corporation

    calgoncarbon.com
    Global producer of activated carbon in particulate and cloth form, as well as other process med... Moreia and water treatment technology.
    From the site: Call 800-4-CARBON, e-mail info@calgoncarbon-us.com or for more specific information, click here and complete an application questionnaire so we may better assist you ... Call 866-225-4660 Or e-mail customerrelations@calgoncarbon.com ... Call 800-4-CARBON Or e-mail customersatisfaction@calgoncarbon.com

  • 5

    Catalytic Solutions, Inc.

    catsolns.com
    Develops and manufactures catalytic converters for automotive and stationary energy application... Mores. Overview of technologies, corporate profile, and investor information. California.

  • 6

    CRI Catalyst Company

    cricatalyst.com
    Subsidiary of Shell, specializing in catalysts for refinery processes, petrochemical manufactur... Moree, hydrogen production, and environmental applications.

  • 7

    Zeochem AG

    zeochem.ch
    Manufactures molecular sieve (zeolite) adsorbents and catalysts, as well as silica gel for chro... Morematography and desiccant applications. Headquartered in Switzerland.

  • 8

    Nucon International, Inc.

    nucon-int.com
    Manufactures activated carbon for industrial and nuclear applications, with specialty mercury r... Moreemoval product. Also designs and services filtration and solvent vapor removal equipment. Located in Ohio.

  • 9

    Zeo Inc.

    zeoinc.com
    Producer of a range of natural zeolite products, for use in horticulture, as animal feed and fi... Morelter media, and fillers. Located in Texas.

  • 10

    Zappa Tec, LLC

    zappa-tec.com
    USA. Manufacturers of super absorbent polymers for the solidification of medical and industrial... More liquid wastes. Technical information and FAQ.
    From the site: Zappa Tec is the most cost effective supplier of super absorbent polymers for medical and industrial uses. By partnering with Degussa, the leading supplier of super absorbent polymers in the world, Zappa Tec provides the best liquid solidification agent for the lowest cost. Degussa and Zappa Tec personnel have a long relationship that spans almost two decades. By working together we have created the top waste solidification products on the market today. ...

  • 11

    Zeolyst International

    zeolyst.com
    Supplier of a wide range of zeolite catalysts and adsorbents, including custom zeolite powders,... More hydrocracking catalysts, and specialty catalysts.
    From the site: Zeolyst International has been specializing in zeolite powders, catalysts, and adsorbents since 1988, emerging as a global leader for both commercial and specialized zeolites. We combine the zeolite product development and manufacturing skills of our parent companies, PQ Corporation and CRI International, Inc. , a member of the Royal Dutch Shell Group of companies, into a single entity. ...

  • 12

    ThomasNet.com

    thomasnet.com/products/activated-carbon-10660207-1.html
    Directory for activated carbon, activated carbon filters and adsorbers. Also find companies pro... Moreviding absorbers, canisters and honeycomb.

  • 13

    Catalyst Products

    catalystproducts.com
    Provides environmental catalysis products and services.

  • 14

    Incal Mineral

    incalzeolite.com
    Producer and exporter of natural clinoptilolite zeolite mined in Turkey. Overview of products a... Morend applications.

  • 15

    GeeJay Chemicals

    geejaychemicals.co.uk
    United Kingdom manufacturer of desiccants: silica gel, silica gel sachets and molecular sieves.

  • 16

    Carbon Activated Corp.

    activatedcarbon.com
    Manufactures and distributes granular, pelletized, and powdered activated carbon derived from c... Moreoconut shell and coal. California.
    From the site: Our personnel have over 25 years experience and technical knowledge in the production, quality control, shipping, and sales of activated carbon domestically and internationally. In addition, we have a thorough knowledge in numerous activated carbon applications. We operate our own manufacturing facilities that produce high quality activated carbon. has in place a stringent production control to ensure superior quality at all stages of production. 1 1 1

  • 17

    Dynamic Adsorbents

    dynamicadsorbents.com
    Provides sorbents for preparative chromatography at the pilot and production scale. Products in... Moreclude alumina, silica gels, polyamide, a pesticide-selective sorbent, as well as tubing supplies.
    From the site: Dynamic Adsorbents, Inc. , is a company in the business of formulation and manufacture of proprietary and specialized chemical adsorbents used for the purification of industrial compounds. The chemical process used for such industrial purification process is chromatography. ...

  • 18

    Refoil Earth Pvt. Ltd.

    refoil.com
    Manufacturer of bleaching clays in India, converting raw material from its own mine using dry a... Morend wet processes, for use in refining vegetable and mineral oils, animal fats, and waxes.

  • 19

    Activated Carbon Technologies Pty Ltd

    activatedcarbon.co.nz
    Supplier of coal- and coconut-derived activated carbon and anthracite, offering products in pow... Moredered, granular, and pelletized forms. Primarily serves the Australia and New Zealand markets.
    From the site: Kerstin is based in the Wellington Office and can be contacted on +64 (0)4 499 4475 or info@activatedcarbon.co.nz . ... New Zealand enquiries by e-mail at info@activatedcarbon.co.nz or by phone on +64 4 499 4475. Copyright © 2005 Activated Carbon Technologies Pty Ltd

  • 20

    Cameron Carbon Inc.

    cameroncarbon.com
    Offers virgin and reprocessed carbons from various raw materials, as well as specialized filtra... Moretion media and modular systems. Overview of products and applications. Maryland, USA.

  • 21

    Baoji Rock Non-Ferrous Metal Co.,Ltd.

    bjrock.com
    Researches, develops and manufactures metal catalysts.

  • 22

    CAI Catalysts, LLC

    caicatalysts.com
    Provides process development and engineering and process control consulting to companies that d... Moreevelop and manufacture catalysts. Also offers catalyst formulation development and evaluation services.

  • 23

    Catacel Corporation

    catacel.com
    Ohio technology company offering solutions in the area of catalytic coatings, heat exchangers, ... Moreand metal honeycombs, for applications in the environmental and energy sectors.

  • 24

    Catal International Ltd

    catal.co.uk
    UK company offering products and services related to catalysts and catalytic processes, includi... Moreng development services, custom manufacturing, and sale of modular testing units.

  • 25

    Ceca Adsorbents

    adsorbents.com
    Supplier of activated carbons and aluminas, synthetic zeolites, and silica gels, for use in sep... Morearation, purification, and drying processes.
    From the site: CECA’s constant focus is enhancing the performance of leading operators in the oil and gas, petrochemical, pharmaceutical, highway engineering, building and construction industries by leveraging its expertise to develop adsorbents, intermediates and additives. CECA’s capabilities in seven major areas have earned it a worldwide reputation in the specialty chemical segment. Its flexibility, efficiency and responsiveness make it the preferred partner for industry majors.