Full Length ArticleChemical reactions in the pyrolysis of brown grease

Add time:09/06/2019    Source:sciencedirect.com

Brown grease breaks down into a mixture of alkanes and alkenes at temperatures above 300 °C without addition of hydrogen or an external catalyst. To better understand the reactions in this process, pyrolysis experiments were performed on palmitic and oleic acids as model systems for the saturated and unsaturated fatty acids in brown grease, respectively. Iron (III) sulfate was used in half of the experiments, as Fe(III) is normally found in brown grease; and the other experiments were performed without iron as controls. In the presence of Fe(III), palmitic acid forms a series of aliphatic hydrocarbons and some palmitone byproduct, while the iron-free control experiment yielded larger quantities of palmitone, up to more than 50%. However, regardless of Fe(III), oleic acid broke down into shorter saturated fatty acids, hydrocarbons, alcohols, aldehydes, esters, and ketones, according to known thermal reactions of unsaturated fatty acids. The product fatty acids then reacted in a manner similar to palmitic acid. The major ketone and alcohol byproducts were also examined for reactions ultimately leading to the desired products.

We also recommend Trading Suppliers and Manufacturers of Acid brown 97 (cas 108347-99-5). Pls Click Website Link as below: cas 108347-99-5 suppliers

Prev:ReviewMicroRNAs in brown and beige fat
Next:Advances in the pretreatment of brown macroalgae for biogas production)