Chemical reactions in the pyrolysis of brown grease
Chemical reactions in the pyrolysis of brown grease
复制标题
棕色油脂热解中的化学反应
DOI：
10.1016/j.fuel.2017.06.101
复制
发表时间：
2017
期刊：
影响因子：
7.4
通讯作者：
L. M. Pratt
中科院分区：
文献类型：
--
作者：
Yoke;Nitthia Meyappan;Non Siau Yen;Subramaniam Swarna Kamala a;Choon Hean Khoo;Wing Lam Cheah;Dickens St. Hilaire;Travis Pinnock;Beatrice Bacolod;Z. Cai;D. Gurung;Rifat Hasnat;J. Strothers;Cristine T. Remy;Patrick K. Gentles;S. Groveman;M. Vittadello;Ji;L. M. Pratt
棕色油脂在 300°C 以上的温度下分解成烷烃和烯烃的混合物，无需添加氢气或外部催化剂。为了更好地了解该过程中的反应，分别以棕榈酸和油酸作为棕色油脂中饱和和不饱和脂肪酸的模型系统进行热解实验。一半的实验使用了硫酸铁 (III)，因为 Fe(III) 通常存在于棕色油脂中；其他实验均以无铁作为对照进行。在 Fe(III) 存在下，棕榈酸形成一系列脂肪烃和一些棕榈酮副产物，而无铁对照实验产生了更多的棕榈酮，高达 50% 以上。然而，根据已知的不饱和脂肪酸的热反应，无论Fe(III)如何，油酸都会分解成较短的饱和脂肪酸、烃、醇、醛、酯和酮。然后产物脂肪酸以类似于棕榈酸的方式发生反应。还检查了主要的酮和醇副产物的反应，最终产生所需的产物。
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.
影响因子：
11.4
作者：
Biller, P.;Riley, R.;Ross, A. B.
通讯作者：
Ross, A. B.