Catalyst

This up-to-date catalytic system produced by the company and designed for ammonia oxidation in units for nitric acid and hydroxylamine production is made of a number of gauzes:

•   catalyst gauzes;

•   catchment gauzes;

•   separating gauzes (which are used for catchment gauzes separation and prevent their agglomeration during operation).

For this purpose, gauzes made of precious metals are used, which different from each other by:

•   alloy grades;

•   density of weaving and knitting (for woven and knitted gauzes);

•   diameter of the wire used;

•   mechanical properties.

Work to reduce losses of precious metals during operation, improve gauze conversion, reduce waste processing time and manufacturing of finished products is continuously being carried out.

The primary advantages of the technology being developed for catalyst gauze production are as follows:

•   catalyst alloys with a reduced platinum content;

•   electrochemical activation of the catalyst surface for rapid ignition;

•   unique PdW-5 alloy containing special additives for catchment gauzes;

•   electrochemical activation of the catchment gauzes to reduce addition and losses of precious metals.

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  • شناسه محصول: ۵۲
  • برند: SetarehKamyaran
  • دسته: Precious Metals

Alloy

Wire diameter, mm

Mesh size, mm

Mesh/cm2

Catalyst gauze - woven

PtRh92.5-7.5

0.092

0.22

1024

PtPdRh92.5-4-3.5

0.092

0.22

1024

PtPdRhRu81-15-3.5-0.5

0.076

0.236

1024

Catalyst gauze - knitted

PtRh95-5

0.092

-

-

PtRh92.5-7.5

0.092

-

-

PtPdRh92.5-4-3.5

0.092

-

-

PtPdRhRu81-15-3.5-0.5

0.076

-

-

Separating gauze

Fe72Cr23Al5

0.25

0.5

-

Fe71Cr23Al5Ti

0.4

1

-

Catchment/getter gauze

PdW-5

0.09

0.222

1024

PdW-5 (Pt coating)

0.076

0.236

1024

PdW-5 (Pt coating)

0.12

0.349

453