Epoxidation of Fatty Acids and Vegetable Oils Assisted by Microwaves Catalyzed by a Cation Exchange Resin
Epoxidation of Fatty Acids and Vegetable Oils Assisted by Microwaves Catalyzed by a Cation Exchange Resin
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DOI：
10.1021/acs.iecr.7b05293
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发表时间：
2018-03-21
影响因子：
4.2
通讯作者：
Salmi, Tapio
中科院分区：
文献类型：
--
作者：
Aguilera, Adriana Freites;Tolvanen, Pasi;Salmi, Tapio
以原位生成的过羧酸（过乙酸或过丙酸）为氧化剂，羧酸（乙酸或丙酸）为氧载体，在半间歇反应器中对油酸和棉籽油进行了环氧化反应。Amberlite IR-120作为催化剂。该系统由一个环形反应器组成，其中混合物被泵送通过单模腔，其中引入了微波辐射。在系统中集成了一个热交换器来代替微波加热，以比较微波加热和传统加热获得的结果。研究了催化剂的负载效应，以及微波辐照和SpinChem旋转床反应器（RBR）的实施对反应的影响，以期减小内部传质的影响。在没有催化剂的情况下，微波辐照的应用提高了反应收率。
Epoxidation of oleic acid and cottonseed oil was conducted in a semibatch reactor with in-situ-formed percarboxylic acid (peracetic acid or perpropionic acid), using hydrogen peroxide as an oxidizing agent and carboxylic acid (acetic acid or propionic acid) as oxygen carriers. Amberlite IR-120 was implemented as the catalyst. The system was comprised of a loop reactor, where the mixture was pumped through a single-mode cavity in which microwave irradiation was introduced. A heat exchanger was integrated into the system to replace microwave heating, to compare the results obtained via microwave heating versus conventional heating. The catalyst loading effect was studied, as well as the influence of microwave irradiation and the implementation of the SpinChem rotating bed reactor (RBR), in hopes of decreasing the influence of the internal mass transfer. The application of microwave irradiation results in an improvement of the reaction yield in the absence of a catalyst.