磁性木质素磺酸盐负载钯配合物：用于水相铃木-宫浦反应的可再生资源衍生催化剂。
Magnetic Lignosulfonate-Supported Pd Complex: Renewable Resource-Derived Catalyst for Aqueous Suzuki-Miyaura Reaction.
作者信息
Nasrollahzadeh Mahmoud, Issaabadi Zahra, Varma Rajender S
机构信息
Department of Chemistry, Faculty of Science, University of Qom, P.O. Box 37185-359, Qom 3716944369, Iran.
Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic.
出版信息
ACS Omega. 2019 Aug 22;4(10):14234-14241. doi: 10.1021/acsomega.9b01640. eCollection 2019 Sep 3.
A novel strategy is described to prepare magnetic Pd nanocatalyst by conjugating lignin with FeO nanoparticles via activation of calcium lignosulfonate, followed by combination with FeO nanoparticles. Tethering 5-amino-1-tetrazole to calcium lignosulfonate-magnetite hybrid through 3-chloropropyl triethoxysilane enabled coordination of Pd salt with FeO-lignosulfonate@5-amino-1-tetrazole. The underlying changes of the lignosulfonate are identified, and the structural morphology of attained FeO-lignosulfonate@5-amino-1-tetrazole-Pd(II) (FLA-Pd) is characterized by Fourier transform infrared, thermogravimetry differential thermal analysis, energy-dispersive spectrometry, field-emission scanning electron microscopy, transmission electron microscopy, and vibrating sample magnetometer (VSM). The synthesized FLA-Pd displayed high activity for phosphine-free C(sp)-C(sp) coupling in water, and the catalyst could be reused for seven successive cycles.
本文描述了一种制备磁性钯纳米催化剂的新策略，该策略通过木质素磺酸盐的活化将木质素与FeO纳米颗粒共轭，然后与FeO纳米颗粒结合。通过3-氯丙基三乙氧基硅烷将5-氨基-1-四唑连接到木质素磺酸钙-磁铁矿杂化物上，使得钯盐能够与FeO-木质素磺酸盐@5-氨基-1-四唑配位。确定了木质素磺酸盐的潜在变化，并通过傅里叶变换红外光谱、热重-差热分析、能量色散光谱、场发射扫描电子显微镜、透射电子显微镜和振动样品磁强计（VSM）对所得FeO-木质素磺酸盐@5-氨基-1-四唑-Pd(II)（FLA-Pd）的结构形态进行了表征。合成的FLA-Pd在水中对无膦C(sp)-C(sp)偶联显示出高活性，并且该催化剂可以连续重复使用七个循环。
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