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Carbonylation product network

2016-07-24View Original

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​ Oxidative synthesis refers to the chemical reaction in which an alkene reacts with syngas to form an aldehyde, also known as hydroformylation. The diversity of olefins and the reactive nature of aldehyde groups make carbonyl synthesis a particularly significant synthetic method that is widely used in industrial production. In the literature, “oxo chemicals” is used to refer to aldehyde compounds prepared through the oxo synthesis reaction. In actual production, due to the instability of aldehydes, manufacturers generally process them on-site into various derivatives. Therefore, the range of carbonyl synthesis chemicals has been expanded to include these derivatives, forming a vast product network. From the perspective of the raw olefins. The olefins used in the carbonylation industry include ethylene, propylene, 1-butene, 2-butene, mixed n-butenes, isobutylene, 1,3-butadiene, 1-hexene, 1-octene, dimerized isobutylene, dimerized n-butylene, tripropylene, tetrapropylene, α-olefins obtained from the oligomerization of ethylene, olefin fractions of various carbon numbers derived from the processing of blended gasoline, as well as mixed olefin components from paraffin cracking and Fischer-Tropsch synthesis. Clearly, in addition to petroleum, the initial raw materials for carbonylation can also be derived from coal and natural gas, serving as an effective means for the further processing of C1 chemicals. Theoretically, all aliphatic carbon-carbon double bonds can undergo carbonylation reactions, thereby further expanding the range of available raw materials. In fact, this reaction also occurs frequently in the synthesis of complex compounds, such as the production of vitamin A and beta-carotene. From the perspective of deep processing. Aldehydes possess reactive chemical properties; they can be easily reduced to alcohols or oxidized to acids, and thanks to various facile condensation reactions, they can be readily transformed into a wide range of mono- and polyfunctional compounds. The reprocessing of these substances, such as alcohols to ethers, alcohols to amines, alcohols to esters, acids to acid salts, and so on. In this way, the product chain can be continuously extended. The discovery of the carbonylation reaction dates back to nearly 80 years ago. Thanks to the relentless efforts of numerous chemists and chemical engineers in this field, who have made full use of the inherent advantages of the carbonyl synthesis reaction to develop a diverse range of products, this traditional method plays an indispensable role in the fields of organic raw materials and fine chemicals. The following introduces the product network of carbonyl synthesis. (to be continued)
Reply #22016-08-25
OP, I have a question: does the carbonylation of olefins require high purity of the reactants? Will the simultaneous participation of alkane-olefin mixtures in the reaction lead to any adverse consequences?

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