Abstract The development of efficient and stable non-mercury catalysts for the chlor-alkali industry is desirable but remains a great challenge. Herein, we design a series of ruthenium catalysts for acetylene hydrochlorination by regulating the electronic structure of ruthenium ions through coordination with various ligands (thiourea, phenanthroline, and L–lactic). The turnover frequencies (TOFs) and apparent activation energies for the acetylene hydrochlorination have a linear relationship with the binding energy of Ru3+ in the ruthenium catalysts. The synergetic effect of the ruthenium ion and ligands plays an important role in acetylene hydrochlorination. The Ru–Thi/AC catalyst with thiourea as the ligand shows the highest TOF and stability in acetylene hydrochlorination. The present study provides a rational method to regulate the electronic structure of supported metal catalysts with high catalytic performance exhibited by the carbon-supported heterogeneous catalysts.

中文翻译：

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乙炔氢氯化的配位策略制备的碳负载钌催化剂

摘要 开发用于氯碱工业的高效、稳定的无汞催化剂是可取的，但仍然是一个巨大的挑战。在此，我们通过与各种配体（硫脲、菲咯啉和 L-乳酸）配位来调节钌离子的电子结构，设计了一系列用于乙炔氢氯化的钌催化剂。乙炔氢氯化的转换频率 (TOF) 和表观活化能与钌催化剂中 Ru3+ 的结合能呈线性关系。钌离子和配体的协同作用在乙炔氢氯化中起重要作用。以硫脲为配体的 Ru-Thi/AC 催化剂在乙炔氢氯化中表现出最高的 TOF 和稳定性。