Synthesis of Renewable Hydrocarbons from Vegetable Oil Feedstock by Hydrotreatment Over Selective Sulfur-Free SiO2-Al2O3 Supported Monometallic Pd, Pt, Ru, Ni, Mo and Bimetallic NiMo Catalysts
Fuel 2021
Kristaps Māliņš

Screening tests of commercial and prepared monometallic Ni, Mo, Pd, Pt, Ru and bimetallic NiMo catalysts synthesized by four different impregnation methods were performed to evaluate their selectivity and performance on hydrocarbon production from vegetable oil feedstock with high free fatty acid (FFA) content (~50%) by solvent-free hydrotreatment (HT). Catalysts were characterized by N2 sorption analysis, XRF, XRD, FE-SEM and TEM. Composition of feedstock and liquid, gaseous products were analyzed by C, H, N, S elemental analysis, FT-IR, GC-FID, GC–MS and GC-TCD. Mo promoted Ni17Mo3DP synthesized using developed one-pot deposition–precipitation procedure exhibits great performance, selectivity to n-C18 and 6–7% higher hydrocarbon yield (~87%) than elevated metal loading (≥65%) commercial Ni65C and Ni66C catalysts achieved at relatively mild reaction temperature 320–340 °C and initial H2 pressure 6–10 MPa. Completely different selectivity of highly active Ru, Ni and NiMo catalysts can be beneficial for wide molecular weight marketable renewable hydrocarbon production from fatty acid containing raw materials.


Keywords
Deoxygenation, Free fatty acids, Green diesel, Hydrotreatment, Mo promoted, Ni and noble metal catalysts
DOI
10.1016/j.fuel.2020.119129
Hyperlink
https://www.sciencedirect.com/science/article/pii/S0016236120321256?via%3Dihub

Māliņš, K. Synthesis of Renewable Hydrocarbons from Vegetable Oil Feedstock by Hydrotreatment Over Selective Sulfur-Free SiO2-Al2O3 Supported Monometallic Pd, Pt, Ru, Ni, Mo and Bimetallic NiMo Catalysts. Fuel, 2021, Vol. 285, Article number 119129. ISSN 0016-2361. e-ISSN 1873-7153. Available from: doi:10.1016/j.fuel.2020.119129

Publication language
English (en)
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