SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 29 ›› Issue (1): 204-211.DOI: 10.1016/j.cjche.2020.07.016

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Photochemical microfluidic synthesis of vitamin D3 by improved light sources with photoluminescent substrates

Wenhao Niu, Yuanzhi Zheng, Ying Li, Le Du, Wei Liu   

  1. The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2020-03-15 Revised:2020-07-02 Online:2021-04-02 Published:2021-01-28
  • Contact: Le Du, Wei Liu
  • Supported by:
    We gratefully acknowledge the support of the National Natural Science Foundation of China (21978008, 21606008), the State Key Laboratory of Chemical Engineering (SKL-ChE-17A02), the Fundamental Research Funds for the Central Universities (JD2017).

Photochemical microfluidic synthesis of vitamin D3 by improved light sources with photoluminescent substrates

Wenhao Niu, Yuanzhi Zheng, Ying Li, Le Du, Wei Liu   

  1. The State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • 通讯作者: Le Du, Wei Liu
  • 基金资助:
    We gratefully acknowledge the support of the National Natural Science Foundation of China (21978008, 21606008), the State Key Laboratory of Chemical Engineering (SKL-ChE-17A02), the Fundamental Research Funds for the Central Universities (JD2017).

Abstract: This study presents a novel technique for the controllable preparation of photoluminescent substrates to enhance the photochemical microfluidic synthesis of vitamin D3. The dip-coating method to prepare the substrates was experimentally optimized, and the corresponding emission behaviors were systematically investigated. The substrates were successfully used to enhance the ultraviolet B (UVB) emission of a low-power light source (e.g., an 8 W lamp), whose UVB emission intensity was increased by approximately 11 times. By virtue of the novel light source, the productivity of a single set of photochemical microreactor with a 12-meter-long channel (0.6 mm i.d.) was increased to 1.83 kg·a-1, which was 42% higher than that of a 100 W lamp, and no cooling devices were used. The method is simple and has great potential to replace traditional medium-pressure mercury lamps for UVB-irradiated photochemical reactions.

Key words: Microfluidics, Photochemistry, Composites, UVB emission, Vitamin D3

摘要: This study presents a novel technique for the controllable preparation of photoluminescent substrates to enhance the photochemical microfluidic synthesis of vitamin D3. The dip-coating method to prepare the substrates was experimentally optimized, and the corresponding emission behaviors were systematically investigated. The substrates were successfully used to enhance the ultraviolet B (UVB) emission of a low-power light source (e.g., an 8 W lamp), whose UVB emission intensity was increased by approximately 11 times. By virtue of the novel light source, the productivity of a single set of photochemical microreactor with a 12-meter-long channel (0.6 mm i.d.) was increased to 1.83 kg·a-1, which was 42% higher than that of a 100 W lamp, and no cooling devices were used. The method is simple and has great potential to replace traditional medium-pressure mercury lamps for UVB-irradiated photochemical reactions.

关键词: Microfluidics, Photochemistry, Composites, UVB emission, Vitamin D3