Catalytic plus Homogeneous Combustion

In test runs simulating actual gas turbine conditions this approach produced less than Ippm NO with a combustor outlet temperature of 1400 °C [14]. Even at a combustor outlet temperature of 1500 °C NO levels were only 2.2 ppm, indicating that this approach will also be applicable to the next generation of gas turbines with higher inlet temperatures. In addition, the low catalyst temperature allows the use of metal substrates, which are resistant to thermal shock, and produces a durable, high-activity catalyst system. 

The heat transfer characteristics of the catalyst walls are of major importance in this approach because the catalyst temperature is so low that gas phase reactions do not occur and the only way in which the gas can attain the required catalyst outlet temperature is by heat transfer from the walls. 

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