高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (2): 20220535.doi: 10.7503/cjcu20220535

• 物理化学 • 上一篇    下一篇

新型卟啉基多孔有机聚合物COP-180负载钯催化剂的制备及应用

何建云1,2, 蒋云波1,2(), 张爱敏1,2(), 唐振艳1,2, 李鸿鹏1,2   

  1. 1.昆明贵研新材料科技有限公司, 昆明 650106
    2.昆明贵金属研究所, 稀贵金属综合利用新技术国家重点实验室, 昆明 650106
  • 出版日期:2023-02-10 发布日期:2023-02-11
  • 通讯作者: 蒋云波,张爱敏 E-mail:jyb@ipm.com.cn;aimin.zhang@ipm.com.cn
  • 基金资助:
    ∶ 国家重点研发计划项目(批准号∶ 2022YFE0105100)、 国家自然科学基金(批准号∶ 51864022)、 昆明市高层次人才引进创新技术进步项目(批准号∶ 13020163)、 云南贵金属集团R&D应用研究项目(批准号∶ 2020040603)和稀贵金属综合利用新技术国家重点实验室开放课题(批准号∶ SKLSPM-202008)资助

Preparation and Application of a Novel Porphyrin-based Porous Organic Polymer COP-180 Supported Palladium Catalyst

HE Jianyun1,2, JIANG Yunbo1,2(), ZHANG Aimin1,2(), TANG Zhenyan1,2, LI Hongpeng1,2   

  1. 1.Kunming Precious Materials & Technology Co. ,Ltd. ,Kunming 650106,China
    2.State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals,Kunming 650106,China
  • Online:2023-02-10 Published:2023-02-11
  • Contact: JIANG Yunbo, ZHANG Aimin E-mail:jyb@ipm.com.cn;aimin.zhang@ipm.com.cn
  • Supported by:
    the National Key Research and Development Program of China(2022YFE0105100);the National Natural Science Foundation of China(51864022);the Recruitment of Oversea Talents of Kunming City, China(13020163);the R&D Application Research Project of Sino-Precious Metal Holding Co., Ltd., China(2020040603);the State Key Laboratory Program for Advanced Technologies for Comprehensive Utilization of Platinum Metals, China(SKLSPM-202008)

摘要:

以对硝基苯甲醛、 乙酸酐和吡咯为原料, 丙酸为溶剂, 经缩合反应制得5,10,15,20-四(4-硝基苯基)- 21H,23H卟啉(TNPPH2), 并以TNPPH2和对苯二胺为原料, N,N'-二甲基甲酰胺(DMF)为溶剂, 合成了卟啉基多孔有机聚合物COP-180; 进一步以COP-180为载体, 氯钯酸为前驱体, 不使用还原剂, 采用浸渍法制备了催化剂Pd@COP-180. 利用傅里叶变换红外光谱(FTIR)、 示差扫描量热法-热重分析(DSC-TG)、 透射电子显微镜(TEM)、 X射线光电子能谱(XPS)和N2吸脱附实验对载体和催化剂的结构进行了表征; 分别以Suzuki-Miyaura偶联反应和对硝基苯酚(4-NP)加氢还原反应为模型反应对催化性能进行了测试. 结果表明, 当催化剂用量为0.5%(摩尔分数), 以碘苯与苯硼酸为底物, 80 ℃下的Suzuki偶联反应中表现出高效性, 且在催化剂使用10次后, 仍有较高的收率; 当催化剂用量为0.01%(摩尔分数)时, 转化频率(TOF)接近10000 h‒1; 而在室温下, 使用8.00 μg催化剂可于10 min内将20.46 μg 4-NP完全还原, 标准化活性参数(kn)为894.60 s‒1·g‒1Pd.

关键词: 卟啉基有机多孔聚合物, 钯基催化剂, Suzuki-Miyaura偶联, 对硝基苯酚还原

Abstract:

5,10,15,20-Tetra(4-nitrophenyl)-21H,23H porphyrin(TNPPH2) was synthesized by condensation reaction with p-nitrobenzaldehyde, acetic anhydride and pyrrole as raw materials and propionic acid as solvent. The porphyrin-based porous organic polymer COP-180 was synthesized with TNPPH2 and p-phenylenediamine as raw materials and anhydrous NN'-dimethylformamide(DMF) as solvent. Then the catalyst Pd@COP-180 was prepared by impregnation method without reducing agent with COP-180 as carrier and chloroparadic acid as precursor. The structures of the support and catalyst were characterized by Fourier transform infrared spectroscopy(FTIR), differential scanning calorimetry-thermogravimetric analysis(DSC-TG), transmission electron microscopy(TEM), X-ray photoelectron spectroscopy(XPS) and N2 adsorption desorption. Finally, the Suzuki-Miyaura cross-coupling reaction and 4-nitrophenol(4-NP) hydrogenation reduction reaction were used as model reactions to test the catalytic performance of catalyst; 0.5%(molar fraction) catalyst shows high efficiency in Suzuki coupling reaction of iodobenzene and phenylboric acid as substrate, and it has been used 10 times, there is still a high yield. When the amount of catalyst was 0.01%(molar fraction), the turn over frequency(TOF) was up to nearly 10000 h‒1. At room temperature, 20.46 μg 4-NP can be completely reduced by 8.00 μg catalyst in 10 minutes, and the standardized activity parameter kn was 894.60 s‒1·g‒1Pd.

Key words: Porphyrin-based porous organic polymer, Palladium-based catalyst, Suzuki-Miyaura coupling, 4-Nitrophenol reduction

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