Products

    Catalyst gauzes

    Catalyst gauzes

    EZOCM manufactures catalyst knitted and woven gauzes used as catalysts for ammonia oxidation in chemical industry.

    Application:

    • PtRh 95-5, PtPdRh 92.5-4-3.5, PtPdRh 90-5-5, PtPdRhRu 81-15-3.5-0.5, PtPdRh 81-15.5-3.5, PtRh 90-10 – for nitric acid production;
    • PtRh 92.5-7.5, PtRh 90-10 – for hydrogen cyanide and hydroxylamine sulfate production.

    Woven gauzes

    Woven catalyst gauzes are manufactured in accordance with the company standard STO 00195200‑013‑2021.

    AlloyWire diameter, mmMesh size, mmMesh/cm2
    Woven catalyst gauzes
    PtRh 95-5

    0.060-0.092

    0.220-0.252

    1024

    PtRh 92.5-7.5
    PtRh 90-10
    PtPdRh 92.5-4-3.5
    PtPdRh 90-5-5
    PtPdRhRu 81-15-3.5-0.5
    Steel catalyst gauzes with Pt coating (Pt content 0.5-1%) 

    Cr23Al5Ti

    (FeCrAl alloy 875)

    		0.25;0.40.5;1-

    Notes - Gauzes from wire of other diameters or a different mesh/cm2 parameter can be manufactured upon customer’s request.

    Gauzes made of other platinum alloys can be manufactured upon customer’s request.

    Knitted catalyst gauzes

    Knitted catalyst gauzes are manufactured in accordance with the company standard STO 00195200‑014‑2021.

    Advantages of knitted gauzes compared to woven gauzes:

    • less wear degree of the gauze;
    • more even distribution of ammonia oxidation process all over the catalyst surface;
    • more stable performance of ammonia conversion rate during the entire operation cycle;
    • 4-6% higher unit productivity;
    • longer operation cycle;
    • lower PGMs losses.

    AlloyWire diameter, mm
    Knitted catalyst gauzes
    PtRh 95-50.060-0.092
    PtRh 95-5U *
    PtRh 92.5-7.5
    PtRh 90-10
    PtPdRh 92.5-4-3.5
    PtPdRh 92.5-4-3.5U *
    PtPdRh 90-5-5
    PtPdRh 81-15.5-3.5
    PtPdRhRu 81-15-3.5-0.5

    *Improved strength alloys

    Note - Gauzes made of other platinum alloys can be manufactured upon customer’s request.

    Alloys PtRh 95-5U and PtPdRh 92.5-4-3.5U are high-strength due to the unique manufacturing technology and use of special additives. Application of gauzes made of these alloys in catalytic system allows to:

    • lower precious metals investment in catalytic system by 10-15% by reducing wire diameter or reducing the number of gauzes;
    • increase lifetime of catalytic system by 5-7%.
    • reduce specific irrecoverable losses of precious metals by 3-5%.

    For further details, please contact us.

    To place an order, kindly provide information as below:

    CategoryProductRequired informationOrder quantity
    Catalytic systems

    Catalyst gauzes,

    Catchment / getter gauzes

    1. Alloy, contents of major alloy components;

    2. Mesh size (or mesh/cm2) and wire diameter;

    3. Gauze dimensions and geometry;

    4. Gauze surface treatment method (activation)

    		Required quantity, unit of measurement.

     

    Make request