What are the characteristics of the acid-catalyzed process for producing DOP?
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What are the characteristics of the acid-catalyzed process for producing DOP? Could those who are aware please explain briefly? Thank you! !
The acid-catalyzed process uses sulfuric acid as the esterification catalyst; its advantages include the low cost and easy availability of the catalyst, high catalytic activity, relatively low reaction temperature, and ease of implementation. However, it has certain drawbacks; due to the dehydrating, esterifying, and oxidizing effects of concentrated sulfuric acid, by-products such as sulfates and ethers are formed during esterification, which makes it difficult to refine the product and results in poor product quality. Additionally, concentrated sulfuric acid causes severe corrosion to equipment. Now, even DOP production plants using the batch process no longer require sulfuric acid as a catalyst; so why ask about the details of this process? It has been phased out!