Impact of sulphur on reforming reactions

The intrinsic rate of the poisoned catalyst could be fitted [390] to the kinetic expression  

Rate expressions for sulphur-free catalyst are discussed in Section 3.5.2. Here the expression by Bodrov [59] is used, and the activation energy from Table 3.5 [379] [389]  

It was shown [390] that the Equation (5.15) for sulphur coverage in the range of interest can be simplified to  

The sulphur resistance of the CPO process is in particular an advantage when using heavy fuels (diesel) as feedstock. These will contain sulphur compounds, which are difficult to remove at low pressure. This is crucial for the operation of low-temperature fuel cells, but may not be the case for high-temperature fuel cells, as demonstrated by results on a SOFC stack [421]. 

Sulphur poisoned the internal reforming as expected, whereas the electrochemical reaction is less sensitive [66] [421]. It was possible to operate an SOFC stack in the presence of 50 ppm H2S with little loss in power output, whereas methane in the feed gas passed unconverted [421]. Hydrogen sulphide may be converted into sulphur dioxide by the 

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