PROX Catalyst (Preferential Oxidation Catalyst for Carbon Monoxide)

PROX = Preferential Oxidation

PROX Catalyst (Preferential Oxidation Catalyst for Carbon Monoxide)

PROX Catalyst by TANAKA Precious Metals

This catalyst is used to selectively oxidize carbon monoxide (CO) from reforming gas. Because CO degrades battery performance by causing poisoning of polymer electrolyte fuel cell (PEFCs) electrodes, the concentration of CO in the reforming gas should be 10 ppm or below. We supply high quality PROX catalysts with excellent selectivity in order to satisfy customer needs.

PROX Catalyst Overview

Features

  • Highly dispersed precious metal helps a high catalytic activity even in regions with high space velocity
  • High catalytic activity over a wide temperature range, from low to high
  • Maintains a high catalytic activity even at a low precious metal content, making it possible to provide catalyst at low cost
Product name Precious metals Particle size
(sieve sorting)
Features
TSSA-5 Ru Approx. φ2 mm High catalytic activity over a wide temperature range
High durability
Low cost

  • We offer consultations regarding the trial manufacture and contract production of catalysts that have been customized in accordance with customer needs.

Example of use (fuel cells)

PROX reaction: CO + 1/2O2 → CO2

Characteristics of PROX Reaction

Characteristics of preferential carbon monoxide oxidation

TSSA-5〔Ru〕

SV-dependence

Note: These results are reference data from initial measurements that we performed.
They are not intended to be conditions for the actual machine.

Characteristics of preferential carbon monoxide oxidation (O2/CO-dependence)

TSSA-5〔Ru〕

O2/CO-dependence

Note: These results are reference data from initial measurements that we performed.
They are not intended to be conditions for the actual machine.

  • We offer consultations regarding the trial manufacture and contract production of catalysts that have been customized in accordance with customer needs.