In Fig. 3 the production of oil, water, and gas from a HDO process using a Co–MoS2/Al2O3 catalyst is seen as a function of the degree of deoxygenation. The oil yield decreases as a function of the degree of deoxygenation, which is due to increased water and gas yields. This shows that when harsh conditions are used to remove the oxygen, a significant decrease in the oil yield occurs; it drops from 55% to 30% when increasing the degree of deoxygenation from 78% to 100%. It is therefore an important aspect to evaluate to which extent the oxygen should be removed