Catalytic deoxygenation of C18 fatty acids over HAlMCM-41 molecular sieve

Selective Hydroconversion of Oleic Acid into Aviation-Fuel-Range Alkanes over Ultrathin Ni/ZSM-5 Nanosheets

“…Moreover, Figure S6a shows that the conversion over NS12(100) and NS24(100) catalysts is unexpectedly higher than that over the NS12(300) and NS24(300) catalysts in spite of the similar Ni dispersion (Figure S5) and pore structure (Table ). The result reveals that high acid concentration enhances the deoxygenation activity, which is in accordance with previous work. ,, As discussed above, the activated C–O bonds on acid sites are easily hydrogenated by active H around adjacent Ni particle. So the synergy between acid sites and metal sites accelerates the deoxygenation of oleic acid, resulting in high deoxygenation activity.…”

“…The result reveals that high acid concentration enhances the deoxygenation activity, which is in accordance with previous work. 9,35,46 As discussed above, the activated C−O bonds on acid sites are easily hydrogenated by active H around adjacent Ni particle. So the synergy between acid sites and metal sites accelerates the deoxygenation of oleic acid, resulting in high deoxygenation activity.…”

Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study

“…After 100 min, lauryl alcohol was totally converted and the yield of alkane was almost 100%, among which the selectivity of undecane was about 87% and that of dodecane was about 13%. The higher hydrodecarbonylation activity than hydrodehydration also has been observed with other catalysts such as Ni/H-Y zeolites [22], NiW [34], CuNi [64], Pd [4,18], Rh/TiO 2 , Ru/ TiO 2 [10], and also some molecular sieve catalysts [65]. Interestingly, the Mo based catalyst may be more reactive for hydrodehydration [20], resulting the higher selectivity to alkanes possess same carbon number with aliphatic acid.…”

Catalytic Deoxygenation of the Oil and Biodiesel of Licuri (Syagrus coronata) To Obtain n-Alkanes with Chains in the Range of Biojet Fuels

“…In the hydrotreating process, deoxygenation occurs, which leads to the formation of saturated and/or unsaturated linear hydrocarbons by two main reaction routes: decarboxylation (eq 1), generating paraffinic hydrocarbons, and decarbonylation (eq 2), which produces olefins. 13 A third route is also possible to occur, on a smaller scale: hydrodeoxygenation (eq 3), in which there is no carbon loss in the chain. 14 Snåre et al 15 observed that, for stearic acid, both the decarbolylation and decarbonylation reactions are thermodynamically favorableThe principle of the catalytic deoxygenation reaction is based on the cracking of the fatty acids at the conditions of high temperatures and pressure, with the aid of the catalyst.…”

“…In the hydrotreating process, deoxygenation occurs, which leads to the formation of saturated and/or unsaturated linear hydrocarbons by two main reaction routes: decarboxylation (eq ), generating paraffinic hydrocarbons, and decarbonylation (eq ), which produces olefins . A third route is also possible to occur, on a smaller scale: hydrodeoxygenation (eq ), in which there is no carbon loss in the chain .…”