Thermal deoxygenation and pyrolysis of oleic acid

Flash Pyrolysis of Oleic Acid as a Model Compound Adsorbed on Supported Nickel Catalysts for Biofuel Production

“…The second column is the retention time t R (min), the third is the name of the aromatic compound, the fourth is the chemical formula, the fifth and sixth are the area percentage from the pyrogram, respectively on NiO/alumina and NiO/silica has not been reported. 30,40 In the industrial production of linear alkyl benzenes for detergent applications, the alkylation of olefins is conducted in the presence of a strong acidic medium, either with HF, or more recently with zeolite-type heterogeneous catalysts.…”

“…[21][22][23][24][25][26][27][28][29] A recent study on the pyrolysis of oleic acid in an autogeneous atmosphere, between 350 and 450 °C, confirmed that both decarboxylation and decarbonylation took place in the reactor, but also revealed internal cracking at the allylic C position, leading to a predominance of C6-C10 hydrocarbons in the liquid products and the formation of C9 and C10 fatty acids. 30 The amount of fatty acids decreased when the temperature of pyrolysis was increased, whereas the amount of mono-and poly-aromatic compounds increased. A recent study from our group described the flash pyrolysis of micro amounts of fatty compounds adsorbed on different solid catalysts, NaZSM-5, HZSM-5, g-alumina, SAPO-5 and NiMo/SAPO-5, as a rapid way to screen some catalyst properties and confirm the presence of even minute amounts of products, especially primary reaction intermediates.…”

Biofuel production from thermocatalytic processing of vegetable oils: a review

“…a fragmentation of carbonic chain in their unsaturation occurred. it was evidenced by the presence of hydrocarbons C 1 to C 4 , where these hydrocarbons amount double in comparison with monounsaturated acids pyrolysis, both at 66 K and 4 h. This is by breaking the C=C bounds that are most unstable and are presents on chains at C 9 and C 12 carbons, if the fragmentation occurs, the product will be C 6 hydrocarbons, which can lead to breakage of the second unsaturation generating hydrocarbons C 4 in addition to free fatty acids thermal cracking, it is necessary to understand the behavior of pyrolysis when the process involves a triglyceride. for this, it was studied synthetic triglycerides Trilaurin (Kitamura, 1971) tripalmitin (Higman et al, 1973;Kitamura, 1971) and triestearin (Higman et al, 1973), under pyrolysis conditions.…”

“…On evaluating the chain unsaturation on oleic and linoleic acid deoxygenating pyrolysis (Asomaning et al, 2014a(Asomaning et al, , 2014b, deoxygenation by decarboxylation (DCX) and decarbonylation (DCN) was observed. For 4 h of reaction over 623-683 K, the DCN quantity exceeded DCX quantity and for higher temperatures the DCX quantity exceeded DCn.…”

“…the author does not address directly dehydrogenation reactions, but it shows a radical formation reactions leading to the formation of cyclic compounds. as triglycerides models with unsaturated fatty acids have not been tested by pyrolysis in a mechanism study, it is a risk to say that the breakdown of triglyceride will be the primary reaction process, without prior fragmentation of unsaturation was been noted when these are present (Asomaning et al, 2014a(Asomaning et al, , 2014b.…”