---
title: "Corrugated catalyst"
description: "A corrugated catalyst uses corrugated ceramic-fibre sheets coated with the active catalytic material, assembled into modules with alternating flat and corrugated layers to form gas-flow channels. The construction is lighter than honeycomb and plate catalysts and is particularly common on tail-end SCR, marine duty and applications where catalyst weight matters."
canonical_url: "https://sylio.co/glossary/corrugated-catalyst"
last_updated: "2026-06-28T02:29:37.401Z"
---

A **corrugated catalyst** uses corrugated ceramic-fibre sheets coated with the active catalytic material, assembled into modules with alternating flat and corrugated layers to form gas-flow channels. The construction is lighter than [honeycomb](/glossary/honeycomb-catalyst) and [plate](/glossary/plate-catalyst) catalysts and is particularly common on tail-end SCR, marine duty and applications where catalyst weight matters.

## Where corrugated catalysts fit

- Tail-end [SCRs](/glossary/selective-catalytic-reduction) downstream of FGD
- Marine SCR for shipboard NOx control
- Co-generation and industrial duty with weight constraints
- Some [HRSG](/glossary/heat-recovery-steam-generator) installations

## Trade-offs

<table>
<thead>
  <tr>
    <th>
      Factor
    </th>
    
    <th>
      Corrugated
    </th>
    
    <th>
      Honeycomb
    </th>
    
    <th>
      Plate
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      Weight per unit volume
    </td>
    
    <td>
      Lowest
    </td>
    
    <td>
      Highest
    </td>
    
    <td>
      Medium
    </td>
  </tr>
  
  <tr>
    <td>
      Mechanical robustness
    </td>
    
    <td>
      Lower
    </td>
    
    <td>
      Medium
    </td>
    
    <td>
      Higher
    </td>
  </tr>
  
  <tr>
    <td>
      Surface area
    </td>
    
    <td>
      Medium
    </td>
    
    <td>
      Highest
    </td>
    
    <td>
      Lower
    </td>
  </tr>
  
  <tr>
    <td>
      Cost
    </td>
    
    <td>
      Variable
    </td>
    
    <td>
      Lowest (mature supply)
    </td>
    
    <td>
      Medium
    </td>
  </tr>
</tbody>
</table>

Corrugated catalysts are less common in heavy-duty coal and cement SCR but earn their place in specialised duty.

## Related terms

- [Selective Catalytic Reduction (SCR)](/glossary/selective-catalytic-reduction)
- [Honeycomb catalyst](/glossary/honeycomb-catalyst)
- [Plate catalyst](/glossary/plate-catalyst)