Problems with hydrogenation isomerization dewaxing catalysts
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Why does a hydroisomerization dewaxing catalyst need to be reduced with hydrogen first? I seek advice from experts: what are the main components of heterogeneous dewaxing catalysts?
During catalyst formation, metal oxides are attached to a carrier, and at that stage it is inactive. Hydrogen reduction is required before starting up with feed oil, which involves reducing metal oxides to metallic elements. The main ones are the precious metals rhodium and platinum.
In hydroisomerization dewaxing, the main active components are precious metals and molecular sieves. Such catalysts cannot be regenerated; once their activity declines, they are washed with light white oil, and after that washing, hydrogen reduction is carried out. The agent is replaced every about five years.