Carbon nanotubes supported N-promoted Pd-based catalysts for acetylene hydrochlorination

¹ Key laboratory of oil and gas fine chemicals of education and xinjiang uygur autonomous region, College of chemical engineering, Xinjiang university, Urumqi, Xinjiang, China.
² Xinjiang De’an environmental protection technology incorporated company, Urumqi, Xinjiang, China.

^* Corresponding author: wanglu_4951@163.com
^# The two authors contributed equally to this work.

Abstract

A novel N-promoted carbon nanotubes (CNT) supported Pd catalyst (PANI/CNT-Pd) was prepared by the ultrasonic-assisted impregnation method and applied in the acetylene hydrochlorination reaction successfully. Compared with the Pd-CNT catalyst, the PANI/CNT-Pd catalyst exhibited the enhanced catalytic performance with more than 91.6% acetylene conversion and 99.6% vinyl chloride selectivity during 20 h at T = 160 °C, GHSV(C2H2) = 120 h^-1 and V(HCl) : V(C₂H₂) = 1.5. It is suggested that PANI species contained N elements have been deposited on the CNT surface and they display the critical role on the enhanced catalytic performance of PANI/CNT-Pd catalysts correlated with the less palladium loss and the carbon deposition.