Silica Gel Oxygen absorber sachets
Desiccants and absorbers
Oxygen Absorbers
Generating sachets
Indicators
Shipping, Cold Chain and Container Cargo Protection
Bulk Desiccants
Vapour Corrosion Inhibitors (VCI)
Tamper Evident Products
Gas Generator Equipment
Silicone fluids
Special Foundations, Tunneling and Drilling products
Specialty food grade ingredients
Stevia
Laboratory and Research Chemicals
Mallinckrodt Baker Laboratory Chemicals
Civil Engineering
Foundry Additives

Bulk desiccants

Absorbents size comparison chart - click here to display.

Silica Gel

Silica gel is a vitreous, highly porous form of silica, a naturally occurring mineral that is purified into either granular or beaded form. It is a desiccant commonly encountered in everyday life.

Silica Gel Indicating Blue
Contains a cobalt based indicator, the indicator causes the gel to change colour from blue when dry, to pink when hydrated.
Material Safety Datasheet - click here to display.

Silica Gel Indicating Orange (EnviroGel)
Contains an advanced indicator, the indicator causes the gel to change colour from orange when dry, to green when hydrated. This indicator was developed as an alternative to the cobalt-based indicating blue.
Material Safety Datasheet - click here to display.

Silica Gel Non Indicating
100% pure silica gel used when no visual indication of hydration is required.

Molecular Sieve

ECP Ltd are agents for UOP Ltd, a division of Honeywell Corporation based in the USA.

What Are Zeolite Molecular Sieves?

Zeolite molecular sieves are crystalline structures that, on a molecular scale, are not unlike sponges. They have a solid framework, defined by large internal cavities where molecules can be adsorbed. These cavities are interconnected by pore openings through which molecules can pass, and because of their crystalline nature, the pores and cavities are all precisely the same size. Depending on the size of the openings, they can adsorb molecules readily, slowly, or not at all, thus functioning as molecular sieves - adsorbing molecules of certain sizes while rejecting larger ones.

The ability of these molecular sieves to attract and sort molecules is also affected by the electrical charge or polarity of the molecules being sorted. Synthetic zeolites possess the unique ability to selectively adsorb molecules by size and polarity. This is the key to their unusual efficiency as agents for drying and purifying liquids and gases. Such abilities also serve as the basis for separation.

Synthetic zeolites can be manufactured to provide a wide range of desired adsorption characteristics or selectivities, and can be used as a separation tool for numerous commercial applications.

Traditional molecular sieves work as desiccants, adsorbents, and ion exchangers. UOP also offers high-silica zeolites for non-traditional applications, including the removal of organic molecules that can cause odours or affect taste within food and beverage packaging.

Molecular sieves have selective adsorption, that is to say it will absorb molecules whose diameter is less than the pore size of molecular sieve. As for polar molecules and unsaturated molecules, molecular sieves have selective adsorption. The bigger the polarity, the higher the unsaturated ratio and the stronger selective adsorption. Molecular sieves have high water absorption even at high temperatures, or low content of water.

ECP stock Molecular sieve are divided into several types dependant on pore size and application.

3A Molecular Sieve

Typical applications include:

  • Dehydration of many kinds of liquids (such as ethanol)
  • Dehydration of air
  • Dehydration of refrigerant
  • Dehydration of natural gas or methane
  • Dehydration of cracked gas, ethylene, propylene or butadiene

13X Molecular Sieve

The pore size for 13X molecular sieve is about 10A so it can adsorb any molecule smaller than 10A. Mainly used as a catalyst carrier, co-adsorption of CO2 + H2O and H2O + H2S, as a desiccant for medical and air compressor systems, and can also be adjusted to fit other applications.

Typical applications:

  • Drying of air
  • Purification and removal of H2O and CO2
  • Dehydration and desulfuration of nature gas, liquid petro gas and liquid alkane

13X APG Molecular Seive

Type 13X APG molecular sieve is specially designed to co-absorb CO2 and H2O for the air cryo-separation industry. It has larger capacity and faster adsorption speed for the removal of CO2 and H2O. It is suitable for air cryo-separation plants of any size and type.

Product profile - click here to display a printable data sheet.

PSA O2 HP MOLSIV™

Introduction
PSA O2 HP adsorbent was specifically developed for on-site generation of oxygen in PSA systems, the nitrogen selectivity of this product makes it particularly applicable for this function.
PSA O2 HP molecular sieve can also be used to retrofit PSA O2 units containing older generation adsorbents to increase productivity or to reduce power consumption.

Product profile - click here to display a printable data sheet.

Insulating Glass Desiccant for Double Glazing

Insulating glass desiccant deeply co-adsorbs the resident moisture and organics in Insulating Glass and keeps the IG clear and transparent even at very low temperatures. More importantly, it can successfully prevent the distortions from air pressure changes placed on the glass through the changing of the day-night temperatures. It carries this out through desorption and adsorption to maintain a constant air pressure and humidity. This resolves the problem of windows distortion caused by IG expansion and shrinkage, preserving the life span of IG windows.

Activated Aluminas

Aluminas are a family of aluminum oxides (Al2O3) that can take many forms. As a general term, "alumina" refers to the lower temperature transition alumina forms. UOP manufactures and markets two unique aluminas for use as adsorbents and catalysts, as well as numerous other applications. The most common use for aluminas is in the manufacturing of aluminium.

Activated aluminas are both high surface area beads and crushed products that are "activated" by a proprietary process to achieve specific surface chemistry and reactivity. Commonly used as adsorbents, desiccants and catalysts, the chemistry, size and structure of these aluminas are tailored to specific applications at UOP's ISO 9001:2000 certified plant in Baton Rouge, Louisiana. Additives are also commonly used with activated aluminas to achieve even greater performance in certain applications eg removal of sulphur and chloride in refinery applications.

Through our ongoing alumina development, UOP has expanded this array to include pseudoboehmite, gamma and bayerite aluminas, all with varying densities and dispersibility ranges. In addition to being a key component in many commonly used catalysts, UOP's Versal aluminas are also used as adsorbents.

Product profile - click here to display a printable data sheet.
Absorbents size comparison chart - click here to display.

Carbon Molecular Sieve

Carbon molecular sieve (CMS) are cylindrical black particles containing countless 4 angstrom fine pores, commonly used to separate air into nitrogen and oxygen in PSA systems. Our CMS products have a large nitrogen yield capacity resulting in a high nitrogen recovery, the products are able meet the requirements of all types of PSA nitrogen systems.

Product profile - click here to display a printable data sheet.

Catalyst Supports - Inert Alumina Ceramic Balls?

With stable chemical properties and a low rate of water absorption, within a manufacturing process Inert alumina ceramic balls can withstand:

  • high temperatures and high pressure,
  • corrosion of acid, alkali and some other organic solvents,
  • and thermal shock (quick change of temperature).

The main role of these ceramic balls is to support the heterogeneous catalyst particles away from the unit outlet, or support grid perforations. They can also help to improve the gas or liquid distribution through the catalyst bed.

Applications:
Catalyst Supports are used routinely in the following specific services: ammonia plants, dydrotreaters, bender treaters, isomerization units, chloride absorbers, pretreaters and reactors, Claus units, molecular sieve units, diesel hydrotreaters, naphtha treaters, fixed bed reformers, reformer pretreaters, fluidized pollution control, hydrocrackers (1st stage), VGO pretreaters and hydrogen plants.

Product profile - click here to display a printable data sheet.

Ethylene Scrubbing Media

Our competitively priced ethylene scrubbing media consists of potassium permanganate (KMnO4) impregnated on activated alumina. With a minimum KMnO4 content of 6 wt%, our media is ideal for removing ethylene gas from containers, storage areas or coolstores. It works by oxidising the ethylene gas - the purple permanganate turns into brown manganese dioxide, a safe non-toxic material that can be used as fertiliser.

Our ethylene scrubbing media is suitable for use with fruits and vegetables, flowers and other industrial applications, including: removal of H2S, SO2, organic acids, nitrogen oxides and other gaseous chemical contaminants.

We can supply bulk media in any quantity, we are also able to provide filters and other scrubbing systems - please contact Paul on 09 480 4532 or paul@ecpltd.co.nz for further information and pricing.