Catalytic Decarboxylation of Fatty Acids to Aviation Fuels over Nickel Supported on Activated Carbon

Abstract

Decarboxylation of fatty acids over non-noble metal catalysts without added hydrogen was studied. Ni/C catalysts were prepared and exhibited excellent activity and maintenance for decarboxylation. Thereafter, the effects of nickel loading, catalyst loading, temperature, and carbon number on the decarboxylation of fatty acids were investigated. The results indicate that the products of cracking increased with high nickel loading or catalyst loading. Temperature significantly impacted the conversion of stearic acid but did not influence the selectivity. The fatty acids with large carbon numbers tend to be cracked in this reaction system. Stearic acid can be completely converted at 370 °C for 5 h, and the selectivity to heptadecane was around 80%.

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

“…Over the last decade, research into the catalytic HDO of SA has mainly involved the use of metals in a reduced state (Pt, Pd, Co, Ru, Ni) or of bimetallic sulfides (NiMoS 2 , CoMoS 2 ) on various supports . However, the corrosiveness of sulfur‐containing catalysts had led to attention being focused on the use of Ni‐ and Pd‐containing catalysts.…”

Exploration of Complex Electrochemical and Chemo‐mechanical Behavior of Solid Oxide Fuel Cell Fueled with Pyrolysis Bio‐oil

“…The literature shows that due to the thermodynamic nature of Eq. , increasing residence time would favor formation of thermodynamically more stable species such as CO 2 and CO . More specifically, at high temperatures, the major gas species ordinarily present from the cracking reaction of bio‐oils are CO, CO 2 , CH 4 and C 2 H 4 .…”

“…We can also notice that the bond dissociation energies for the above mentioned functional groups in the bio‐oil solution are quite high and can be written in descending order as follows: C=O ( 749 kJ mol −1 ) > C–C (610.0 kJ mol −1 ) > C–H (338.4 kJ mol −1 ) . However, these required high activation energies could be overcome during the SOFC direct fed by bio‐oil thanks to the contact with Ni catalyst in the SOFC anode.…”

Potential Vegetable‐Based Diesel Fuels from Perkin Condensation of Furfuraldehyde and Fatty Acid Anhydrides

“…It has already been shown that neat furanacrylic acid will undergo decarboxylation to 2‐vinylfuran, albeit at much higher temperature, by heating at 300–320 °C in a tube furnace (Moureu et al, ; Wagner, ). Although these decarboxylated 2‐ n ‐alkenylfurans were obtained in low yield, the conditions for their formation were rather mild in contradistinction with those effecting decarboxylation of fatty acids (transition metals, >300 °C) (Fu et al, ; Knothe et al, ; Mohite et al, ; Wu et al, ).…”