Tests in methane at 10 bar pressure

Pyrolysis experiments were carried out in methane at 10 bar pressure and 5 cm /min gas flow rate. All the experiments were run using at least three different heating rates (between 5 and 50 K/min). The sample weights were between 1.0 and 4.0 mg. 

The individual data of the Arrhenius coefficients for the bitumens and their colloid components are shown in Tables 4-86 to 4-89. 

Statistical evaluation of the peak maximum temperatures of the distillation bitumens gives very small coefficients of variation, as shown in Table 4-90. 

The coefficients of variation of the means of the conversions show considerably more scattering (Table 4-91). 

The very low variance of the means of the peak maximum temperatures permit their use in calculating the averages of the Arrhenius coefficients (Table 4-92). Again, there are only small differences between the average values of the activation energy E and the means of E from the individual data of the Tables 4-86 to 4-89, with no statistical significance. 

---