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Synthesis of Adipic Acid through Oxidation of K/A oil and Its Kinetic Study in a Microreactor System
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  • Guangxiao Li,
  • Saier Liu,
  • Xiaoyong Dou,
  • Huilong Wei,
  • Minjing Shang,
  • Luo Zheng-Hong,
  • Yuanhai Su
Guangxiao Li
Shanghai Jiao Tong University
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Xiaoyong Dou
China Pingmei Shenma Group
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Huilong Wei
Shanghai Jiao Tong University
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Minjing Shang
Shanghai Jiao Tong University
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Luo Zheng-Hong
Shanghai Jiao Tong University
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Yuanhai Su
Shanghai Jiao Tong University
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Abstract

Synthesis of adipic acid (AA) through the oxidation of cyclohexanol and cyclohexanone (K/A oil) with nitric acid was conducted in a capillary microreactor system. Effects of the temperature, the nitric acid concentration, the volumetric flow rate ratio of nitric acid to K/A oil, and the capillary length on the selectivity and the product yield were investigated systematically to achieve optimal reaction conditions. Notably, a high yield of adipic acid (i.e., 90%) was achieved just in 6 seconds at 85℃ with the use of 55 wt% nitric acid. Gas components produced in this oxidation process and its total volumetric flow rate were determined under various operating conditions, which was beneficial for reaction mechanism characterization and process optimization. Finally, a kinetic model was established, which was of crucial theoretical significance and practical value for optimizing the reactor design and better understanding such fast and highly exothermic multiphase processes with abundant gas production.

Peer review status:ACCEPTED

29 Feb 2020Submitted to AIChE Journal
03 Mar 2020Submission Checks Completed
03 Mar 2020Assigned to Editor
15 Mar 2020Reviewer(s) Assigned
19 Apr 2020Editorial Decision: Revise Major
05 May 20201st Revision Received
07 May 2020Submission Checks Completed
07 May 2020Assigned to Editor
12 May 2020Reviewer(s) Assigned
01 Jun 2020Editorial Decision: Accept