Biocrude components

It should be emphasized that the results in Table reflect the initial 

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The H2S concentration appears to be an important factor influencing the reactivity and the overall HDO mechanism of the biocrude components. " " Thus, during the HDO of GUA (7 MPa 473 and 543 K CoMo/AC), H2S had little effect on the overall conversion, but it inhibited the hydrogenolysis of the Car-0 bond. As a consequence, the (phenol+C6)/catechol ratio decreased. Similarly, H2S had little effect on the overall eonversion of ethyldecanoate but the selectivity to hydrogenated and deearboxylated products slightly decreased. The most adverse effect of H2S on the overall conversion was observed for 4-MA. In the presence of NH3 (from di-aminopropane) both conversion of GUA and deearboxylation of ethyldeeanoate were decreased. 

Thirdly, flowsheeting programmes like AspenPlus also provide data on thermodynamics and phase equilibria. Here again, biocrude and OD have to be introduced, e.g., as pseudo-components. 

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