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Citation: YANG Peng, FAN Guang-Yin MA Xiao-Yan, LI Rui-Xiang, LI Xian-Jun, . Study on Selective Hydrogenation of Avermectin to Ivermectin over Ir/γ-Al₂O₃[J]. Acta Physico-Chimica Sinica, ;2007, 23(10): 1537-1542. doi: 10.3866/PKU.WHXB20071010 shu

Study on Selective Hydrogenation of Avermectin to Ivermectin over Ir/γ-Al₂O₃

1.
Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China

Corresponding author: ,
Received Date: 7 May 2007
Available Online: 31 August 2007

Catalysts Ir/γ-Al₂O₃ were prepared by impregnating γ-Al₂O₃ with an aqueous solution or microemulsion solution ofH₂IrCl₆. The catalystswere characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and transmission electron microscope (TEM). The catalytic performance of the supportediridiumcatalysts for the selective hydrogenation of avermectin to ivermectin was investigated. Compared with active carbon (AC), α-Al₂O₃, and TiO₂, γ-Al₂O₃ is a better support in this system. Among Ir, Ru, Pd, and Pt supported on γ-Al2O3, the catalyst Ir/γ-Al₂O₃ showed the best catalytic activity and selectivity to ivermectin. Ir/γ-Al₂O₃ prepared by means of microemulsion solution showed the best catalytic activity, but the catalytic selectivity to ivermectin was lower that over Ir/γ-Al₂O₃ modified with PVP (polyvinylpyrrolidone), which exhibited excellent activity as well as od selectivity.
- Supported catalyst; Iridium; Avermectin; Ivermectin; Selective hydrogenation
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Study on Selective Hydrogenation of Avermectin to Ivermectin over Ir/γ-Al2O3

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通讯作者: 陈斌, bchen63@163.com

Study on Selective Hydrogenation of Avermectin to Ivermectin over Ir/γ-Al₂O₃