RT info:eu-repo/semantics/article
T1 Sulfur free supported MoCx and MoNx catalysts for the hydrotreatment of atmospheric gasoil and its blends with rapeseed oil
A1 Paz Carmona, Héctor De
A1 Horá`cek, Jan
A1 Tisler, Zdenek
A1 Akhmetzyanova, Uliana R.
K1 Molybdenum nitride
K1 Molybdenum carbide
K1 Hydrotreatment
K1 Sulfur
K1 Vegetable oil
K1 Co-processing
AB Generally, the commercial catalysts for hydrotreatment in refineries are supported sulfide transition-metal-based catalysts. However, the co-processing of vegetable oils reduces their hydrodesulfurization (HDS) efficiency by leaching sulfur from the active sites of the catalyst. The present work reports the use of six sulfur-free MoCx and MoNx catalysts (supporter with Al2O3, TiO2 or ZrO2) for the hydrotreatment of atmospheric gasoil (AGO) and co-processing of rapeseed oil (RSO – 5, 10 and 25 wt%). The screening tests were carried out in a fixed bed reactor at industrial operating conditions (330–350 °C, 5.5 MPa, WHSV = 1–2 h−1). Higher reaction temperatures and lower WHSV had a positive effect on catalyst activity and product quality. In case of co-processing, the hydrodeoxygenation reaction mechanism was found to be dominant, producing n-C16 and n-C18 n-alkanes at all AGO/RSO ratios used. Overall, our results suggest that alumina supported catalysts are the most promising materials, exhibiting a combination of excellent stability, high activity and no negative effects on HDS efficiency during AGO/RSO co-processing.
SN 0016-2361
YR 2019
FD 2019
LK http://riull.ull.es/xmlui/handle/915/35633
UL http://riull.ull.es/xmlui/handle/915/35633
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 30-may-2024