Hydrogenation of o-chloronitrobenzene over CNTs supported Pt catalyst obtained by laser vaporization of bulk metal

作者：Xu Xing-Zhong; Yang Jian-Feng; Li Xiao-Nian; Yan Xin-Huan^*

来源：Acta Physico - Chimica Sinica, 2008, 24(1): 121-126.

DOI：10.3866/PKU.WHXB20080121

• platinum
• laser vaporization
• carbon nanotube
• hydrogenation
• o-chloronitrobenzene

Pt nano clusters were produced by the laser vaporization of bulk metal and were deposited on the surface of carbon nanotubes (CNTs) to produce carbon nanotubes supported Pt catalyst (Pt/CNTs). Transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS) showed that Pt nanoparticles had a narrow size distribution and the Pt content was connected with the preparation condition. X-ray diffraction (XRD) analysis showed that the Pt/CNTs had crystalloid structure which related to the catalytic performance. X-ray photoelectron spectroscopy (XPS) was used to measure core level binding energy shifts of Pt 4f(7/2) and Pt 4f(5/2). Its catalytic performance was evaluated by liquid-phase hydrogenation of o-chloronitrobenzene (o-CNB). The results showed that the Pt/CNTs catalyst exhibited higher conversion and selectivity. The most favorable preparation condition was obtained as follows: T=25 degrees C, V=250 V, and p=300 Pa. It was found that the highest conversion of o-chloronitrobenzene could reach 99.7% while the selectivity to o-chloroaniline could reach 98.2% in alcohol at 60 degrees C under 1.0 MPa of hydrogen, showing good potential application.

• 出版日期2008-1
• 单位浙江工业大学