SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 56 ›› Issue (4): 152-159.DOI: 10.1016/j.cjche.2022.07.004

• Full Length Article • 上一篇    下一篇

Lacunary silicotungstic heteropoly salts as high-performance catalysts in oxidation of cyclopentene

Peiyin Chen1,2, Yanxiong Fang1,2, Kaihong Xie1,2, Yao Chen1, Yang Liu3, Hongliang Zuo3, Weijian Lu1, Baoyu Liu1   

  1. 1. School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, China;
    2. Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), Jieyang 515200, China;
    3. Guangdong Xinhuayue Petrochemical Group Stock Company, No.18, Youcheng 4 Road, Maoming 525000, China
  • 收稿日期:2022-04-18 修回日期:2022-06-15 出版日期:2023-04-28 发布日期:2023-06-13
  • 通讯作者: Yanxiong Fang,E-mail:fangyx@gdut.edu.cn;Baoyu Liu,E-mail:baoyu.liu@gdut.edu.cn
  • 基金资助:
    We are grateful for the Science and Technology Project of Maoming (China) (200203094555139) for financial support, and Sun Yat-sen University Instrumental Analysis & Research Center for technical support.

Lacunary silicotungstic heteropoly salts as high-performance catalysts in oxidation of cyclopentene

Peiyin Chen1,2, Yanxiong Fang1,2, Kaihong Xie1,2, Yao Chen1, Yang Liu3, Hongliang Zuo3, Weijian Lu1, Baoyu Liu1   

  1. 1. School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou 510006, China;
    2. Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Rongjiang Laboratory), Jieyang 515200, China;
    3. Guangdong Xinhuayue Petrochemical Group Stock Company, No.18, Youcheng 4 Road, Maoming 525000, China
  • Received:2022-04-18 Revised:2022-06-15 Online:2023-04-28 Published:2023-06-13
  • Contact: Yanxiong Fang,E-mail:fangyx@gdut.edu.cn;Baoyu Liu,E-mail:baoyu.liu@gdut.edu.cn
  • Supported by:
    We are grateful for the Science and Technology Project of Maoming (China) (200203094555139) for financial support, and Sun Yat-sen University Instrumental Analysis & Research Center for technical support.

摘要: The development of polyoxometalates for olefin oxidation is critical to achieving the green chemical process of the C5 fraction further processing. Di-lacunary silicotungstic anions were easily obtained by continuously adjusting the pH instead of the traditional step-by-step method, which exhibited excellent performance in the catalytic oxidation of cyclopentene (CPE) to aldehydes or alcohols. The 93.69% CPE conversion and 97.15% total product selectivity (41.38% for glutaraldehyde (GA) and 55.77% for 1,2-cyclopentanediol (1,2-diol) were achieved by using H2O2 as the oxidant and acetonitrile as the solvent. Through complementary characterization, it was found that the optimized di-lacunary silicotungstic polyoxometalate retained a complete Keggin structure, and exhibited better catalytic activity and stability than the mono-lacunary or saturated silicodecatungstate because it exposed more catalytic active centers. Furthermore, in situ FT-IR spectra was utilized to monitor the reaction process, revealing the formation of the active species W(O2) on the di-lacunary silicotungstic polyoxometalate and the intermediate epoxycyclopentane during the catalytic oxidation of cyclopentene.

关键词: Lacunary silicotungstic heteropoly salts, Cyclopentene (CPE), Catalytic oxidation, Glutaraldehyde (GA), 1,2-Cyclopentanediol (1,2-diol)

Abstract: The development of polyoxometalates for olefin oxidation is critical to achieving the green chemical process of the C5 fraction further processing. Di-lacunary silicotungstic anions were easily obtained by continuously adjusting the pH instead of the traditional step-by-step method, which exhibited excellent performance in the catalytic oxidation of cyclopentene (CPE) to aldehydes or alcohols. The 93.69% CPE conversion and 97.15% total product selectivity (41.38% for glutaraldehyde (GA) and 55.77% for 1,2-cyclopentanediol (1,2-diol) were achieved by using H2O2 as the oxidant and acetonitrile as the solvent. Through complementary characterization, it was found that the optimized di-lacunary silicotungstic polyoxometalate retained a complete Keggin structure, and exhibited better catalytic activity and stability than the mono-lacunary or saturated silicodecatungstate because it exposed more catalytic active centers. Furthermore, in situ FT-IR spectra was utilized to monitor the reaction process, revealing the formation of the active species W(O2) on the di-lacunary silicotungstic polyoxometalate and the intermediate epoxycyclopentane during the catalytic oxidation of cyclopentene.

Key words: Lacunary silicotungstic heteropoly salts, Cyclopentene (CPE), Catalytic oxidation, Glutaraldehyde (GA), 1,2-Cyclopentanediol (1,2-diol)