Purification Adsorbents & Supports

STM offers a comprehensive range of activated alumina, molecular sieve and activated carbon adsorbents. Our technical support will help to find the best solution to your purification need whether it be use of a single product or a combination of several technologies. STM can assist you with vessel layouts and service life estimates.

Activated Alumina Adsorbents

Porocel LLC manufacture activated alumina products for every Refining, Petrochemical and Hydrocarbon Processing application.

Porocel adsorbents remove contaminants to ensure the reliability, performance and product quality of your process and products are backed with solid customer support. We can review in depth, your process to optimise unit operation, tailor an adsorbent solution and provide on site and remote technical service.


Contaminants and our products designed to remove them:

Chlorocel 901. Specifically promoted. High loading. Excellent resistance to green oil and organic chloride formation.

Organic Chloride:
Chlorocel RCL. Metal Oxide Promoted. Trim layer for Organic Chloride destruction.

H2S, COS, CO2:
Dynocel 628 Highest dynamic capacity for acidic gas compounds.

Dynocel 650 No preload step. Specialty adsorbent for removal of polar compounds from olefinic streams.

Oxygenates/H2S, COS, CO2:
Dynocel 680 No preload step. Specialty adsorbent for removal of both polar compounds and acid gas compounds from olefinic streams.

Hydrogen Sulfide, Mercaptan, Arsine:
Dynocel ASR. Metal Oxide promoted. High affinity for hard to adsorb organic compounds.

Mercury Removal:
Dynocel Hg. Metal Oxide Promoted High affinity for elemental, inorganic and organic mercury compounds.

Fluorocel 830 (Alkylation Premium Grade) Spherical promoted fluoride adsorbent tailored for optimum activity towards organic fluoride decomposition and HF removal. Promoter maximizes fluoride loading capacity with significant reduction in coking tendency.

Inert Support Media

Designed for nearly every catalyst and adsorbent application, Durocel inert bed supports balls are top-of-the-line, low cost and backed by 10 years of product development, technical service and performance improvement.

Porocel Bed Support Ball Products

Durocel 222 is a highly inert vitrified silicon/aluminium oxide composite ceramic. Used in a variety of adsorptive and catalytic applications, Durocel 222 is highly resistant to mechanical stress and thermal shock.

Durocel 235 is ideal for use in applications and catalytic processes demanding the highest level of protection against unwanted chemical reactivity and contamination and also ideal in those applications sensitive to silica. Durocel 235 is fired to high temperature during manufacture to create a low porosity material eliminating risk of shrinkage. Resulting physical characteristics yield excellent resistance to thermal and mechanical shock and abrasion. High chemical purity and mechanical integrity result in one of the most inert support media available.

All Porocel inert support materials are tested routinely to ensure consistent properties. With compositional and physical testing, Thermal shock, rapid depressurisation and impact tests are conducted. 




Molecular Sieves

High performance products  - Comprehensive technical support  -  R&D for real-world applications

Zeochem’s beginnings date to 1818 with the manufacturing of chemicals in Uetikon, Switzerland. Molecular sieve manufacture began in Uetikon in 1973. In 1979 molecular sieve production expanded to Louisville , Kentucky, USA. Today Zeochem has manufacturing sites in Uetikon,Switzerland; Louisville, Kentucky; Lianyungan, China and Bosnia Herzegovina. Zeochem maintain their traditional high standard of manufacturing, innovative products and customer focused research and development.

Zeochem Molecular Sieve Applications

Natural Gas Processing

  • Dehydration of natural gas and natural gas liquids

  • Removal of CO2, H2S, mercaptans and other impurities from natural gas or natural gas liquids

Hydrogen Production or Recovery

  • Drying and purification of H2.

  • Thermal swing or pressure swing adsorption

Basic Petrochemical and Synthesis Gas Processes

  • Purification of natural gas feed

  • Drying and purification of the reformer gas prior to the ammonia loop

  • Treating of ammonia off-gas streams Olefin and polyolefin production

  • Drying of cracked olefin gas, ethylene and propylene products

  • Dehydration and purification of ethane feed to the cracker

  • Impurity removal from polyolefin plant feed (catalyst protection from oxygenates, sulfides)

Industrial Gases

  • Dehydration and CO2 removal from air for cryogenic processing

  • Separation of high-purity oxygen from air via Pressure Swing Adsorption (PSA) or Vacuum Swing Adsorption (VSA)

  • Recovery of inert gases by adsorption

Petroleum Refining

  • Dehydration of light-ends (e.g. olefin) for cryogenic recovery

  • Purification of feed to catalytic processes such as isomerization, dimerization and alkylation units

Fuel Ethanol Production

  • Bulk water removal at the azeotrope

  • Purification of food- and pharmaceutical-grade ethanol

Activated Carbon Adsorbents 

Purification solutions based on Activated Carbon.

STM offer Jacobi Carbons wide range of performance activated carbon products to provide tailored purification solutions. Pressure drop, pore structure, form factor, enhanced adsorptive properties are balanced to best meet purification requirements. Jacobi offers the broadest line of activated carbons in the industry, with hundreds of standard products in granular, powdered, and extruded forms, made from diverse raw materials including coconut shell, various grades of coal, and wood.

Protect health, meet emission standards, control foul odours, protect against corrosive gases.

Remove organic contaminants, pesticide residues, colour and odour. De-chlorinate. Purify effluent water for reuse.

Process Fluids
Remove harmful contaminants to protect catalyst, protect against corrosion, maintain fluid performance, remove degradation products. Remove colour. Enhance finished product.

Process Gas & Vapour
Recover solvent vapours, remove mercury, remove H2S and organics.

Product Family Brands 

PetroSorb™ Activated carbons products designed for the oil and gas industry, covering water treatment, vapour treatment, and process applications in petrochemical facilities

EcoSorb™Activated carbons designed for air and gas treatment, covering a diverse set of applications including VOC abatement in air, odour control, solvent recovery, process gas purification.

AddSorb™ specialty impregnated activated carbons for vapour applications such as acid gases, basic gases, formaldehyde, mercury, and odour control. 



Amine and Glycol Recovery
Activated carbon is widely applied in Glycol Dehydration treatment and has found its largest application in the removal of degradation products created within the amine treatment processes (Girdler Process) used to remove H2S and CO2.  By treating a side stream of recirculating amine liquor, activated carbon can greatly prolong the service life of the amine. Similarly, the purification of glycol used in gas dehydration processes ensures optimum performance and reduces the risk of secondary contamination of the raffinate. PetroSorb™ products for Amine treatment and Glycol recovery include PetroSorb™1000 series and re-agglomerated grades  PetroSorb™ 620 and PetroSorb™ 630. 

Condensate Treatment
Water use management is an increasingly critical component of refinery operations, particularly in arid regions. In the reuse of steam condensate oil and hydrocarbons must be removed upstream of ion exchange resins in boiler water recirculation systems. Jacobi’s PetroSorb™ HS series includes grades with low silica release, which reduces wash water requirements and ensures that the ion exchange columns function as intended in the removal of trace metals, and not silica, from the recirculating condensate.

Mercaptan Extraction and Fuel Sweetening
Activated carbon serves as a perfect substrate for impregnation with any oxidation catalyst used in the removal of mercaptans from high grade liquid fuels. Providing both exceptional product hardness, minimal fine formation in the treated fuel, and low volume density, Jacobi’s PetroSorb™ G-SWC80 meets all the requirements of this critical refinery process.

Gas Purification – Mercury Removal
Mercury and its reacted by-products in natural gas, petrochemical, and refinery feed streams can result in extreme corrosion of metallic components. Jacobi offers  AddSorb™ VQ series of high activity, impregnated activated carbons manufactured by steam activation of coconut shell (granular) and anthracite coal (extruded). The chemical impregnations used offer exceptionally high loading capacity and high temperature stability for the most arduous operating conditions.

Gas Purification – Desulfurization Of Natural Gas 
Sulphur is a common contaminant requiring removal from gas streams, whether it be for catalyst protection or the control of odorous emissions to the atmosphere. Jacobi’s AddSorb™ VA series and AddSorb™ Sulfox are suitable for sulphur removal in air or oxygen deficient atmospheres, with exceptionally high capacity and suitable for in-situ regeneration.

Gas Purification – Pressure Swing Adsorption 
High purity gases are increasingly used in refinery operations. Remote extraction locations often dictate that gas generation occurs onsite. Activated carbon plays a critical role in the separation of oxygen, hydrogen and other critical gases from the air in pressure swing adsorption systems. Jacobi’s PetroSorb™ GXK and PetroSorb™ CS gas separation carbons are made from coconut shell and anthracite coal by steam activation processes, ensuring excellent cycle yields and high purity end product.

Air Emissions – VOC Control
In addition to regulations governing wastewater discharge, petroleum refineries often must comply with regulations on their air emissions, requiring control technologies for volatile organic compounds (VOCs).  Activated carbon’s simplicity and reliability makes it ideal for air emission compliance. Jacobi supplies PetroSorb™ GXB (extruded coal based) and PetroSorb™ CS (granular coconut shell based) grades for VOC removal systems.

CO2 Purification 
Surplus CO2 may be purified on or off site for a variety of end uses. Purification of CO2 uses activated carbon as polishing step to remove residual VOC's. Jacobi EcoSorb™ BXB and EcoSorb™ GXB series are utilised in this application.  

Vapour Recovery Units
Displacement of hydrocarbon vapour during transfer from bulk tanks to transportation and delivery vehicles and ships may result in losses to atmosphere. To capture losses, the use of activated carbon in a regenerative vapour recovery unit (VRU) is commonly employed. Jacobi’s PetroSorb™ BX series possess the critical properties for use in VRU systems: high VOC adsorption capacity, ease of desorption, minimal heat of adsorption, and the ability to withstand frequent and repeated regeneration cycles.

Extruded Activated Carbon

Extruded Activated Carbon

Air Dryer Desiccant

Porocel Air Dryer Desiccant

One of the primary applications for desiccant materials is in the dehydration of air. Essentially any manufacturing facility requires dry air for operating pneumatic devices (valves, switches, etc.), providing good quality air purge for instrument enclosures, or as a general utility. A high quality desiccant ensures reliable operation.

Desiccant attributes of

  • high water loading capacity

  • high crush strength and

  • low attrition

enable more water to be removed per cycle, provide dust free operation (no clogging of tubing valves and gauges) and a longer service life.

Dryocel 848 is a high performance spherical desiccant, industry proven and available in a range of particle sizes with packaging to match requirements. Dryocel 848 is produced at Porocel’s manufacturing facility in Little Rock, AR USA.