Assisted electrochemical conversion of nitrogen heterocompounds using active hydrogen passing through a Pd membrane. A non conventional diesel and VGO hydrotreating option

摘要

The conversion of pyridine (PY), quinoline (QUI) and meso-tetraphenylporphyrin (TPP) using active hydrogen passing through a Pd membrane under mild conditions (25 ℃ and ambient pressure) by applying -1.92 mA cm~(-2) is reported. Moreover, some results regarding VGO and diesel hydrotreating, under similar conditions, are shown. Relative kinetic conversion constants (K'), calculated for each tested molecules, support the following reactivity order: PY (k' = 87 × 10~(-4) min~(-1)) > QUI (k'=5 × 10~(-4) min~(-1)) > TPP (k'=1 × 10~(-4)min~(-1)). Based on the reduction and increasing factors found for aromatic and saturated fractions respectively, it can be established that diesel is easier to transform than VGO. Nevertheless, hyd-rodenitrogenation seems to be more notable for VGO than for diesel.