Economically-feasible production of a nylon monomer using RANEY® catalysts,Reaction Chemistry & Engineering

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Economically-feasible production of a nylon monomer using RANEY® catalysts
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2020-11-24 , DOI: 10.1039/d0re00402b
Younghyun Lee _{1,

2,

3,

4} , Hoyoung Park _{4,

5,

6,

7} , Jeehoon Han _{4,

5,

6,

7,

8} , Jechan Lee _{1,

2,

3,

4,

9}

Affiliation

This research was aimed at developing an economically-feasible process to produce a value-added chemical used to synthesize nylon, hexamethylenediamine (HMDA), by hydrogenating adiponitrile (ADN) using an inexpensive catalyst such as RANEY® Ni or RANEY® Co. For the two RANEY®-type catalysts, the effects of reaction temperature, hydrogen pressure, catalyst/ADN ratio, and HMDA/ADN ratio in the reactant on ADN hydrogenation were investigated. As increasing H₂ pressure, catalyst/ADN ratio, and HMDA/ADN ratio in the reactant, the yield of HMDA became high for both catalysts. A trend in the dependence of ADN hydrogenation on reaction temperature from 60 to 80 °C was similar for the two catalysts. Addition of HMDA to the reactant increased the HMDA yield for both catalysts. No metal leaching occurred during the hydrogenation reaction on the two catalysts. Based on the experimental results, a process simulation model was developed to determine the economic potential of the production of HMDA from ADN. Using this model, a techno-economic analysis of the experiment-based process was conducted by comparing four case studies with respect to the ratio of HMDA to ADN for each catalyst on a large scale. The process using a HMDA/ADN ratio of 8 over the RANEY® Co catalyst was the most techno-economically feasible option with the lowest minimum selling price (US$ 1.64 per kg) of HMDA produced from ADN, which is below the range of recent market prices.

中文翻译：

使用RANEY®催化剂经济可行地生产尼龙单体

这项研究旨在开发一种经济可行的方法，以通过使用廉价的催化剂（如RANEY®Ni或RANEY®Co.）氢化己二腈（ADN）来生产用于合成尼龙六亚甲基二胺（HMDA）的增值化学品。研究了两种RANEY®型催化剂，研究了反应温度，氢气压力，催化剂/ ADN比和反应物中HMDA / ADN比对ADN加氢的影响。随着H _2的增加压力，催化剂/ ADN比和HMDA / ADN比在反应物中，两种催化剂的HMDA收率都很高。对于两种催化剂，ADN加氢对反应温度从60至80℃的依赖性的趋势是相似的。将HMDA添加到反应物中增加了两种催化剂的HMDA产率。在两种催化剂的氢化反应过程中没有发生金属浸出。根据实验结果，开发了一个过程仿真模型，以确定从ADN生产HMDA的经济潜力。使用该模型，通过比较四个案例研究对每种催化剂的HMDA与ADN的比例进行了大规模的研究，对基于实验的过程进行了技术经济分析。

更新日期：2020-12-09

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