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UV Light-Assisted Synthesis of Highly Efficient Pd-Based Catalyst over NiO for Hydrogenation of o-Chloronitrobenzene

1
School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China
2
Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science & Engineering, Zigong 643000, China
3
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(4), 240; https://doi.org/10.3390/nano8040240
Received: 3 March 2018 / Revised: 6 April 2018 / Accepted: 7 April 2018 / Published: 14 April 2018
Supported Pd-based catalyst over active nickel oxide (NiO) was repared using the impregnation method companying with UV-light irradiation. Moreover, the catalytic performance of the obtained Pd-based catalysts was evaluated towards the hydrogenation of o-chloronitrobenzene (o-CNB). Observations indicate that the as-prepared UV-irradiated Pd/NiO catalyst with a mole fraction 0.2% (0.2%Pd/NiO) has higher activity and selectivity in the o-CNB hydrogenation. Especially, UV-light irradiation played a positive role in the improvement of catalytic activity of 0.2%Pd/NiO catalyst, exhibiting an excess 11-fold activity superiority in contrast with non-UV-irradiated 0.2%Pd/NiO catalyst. In addition, it was investigated that effects of varied factors (i.e., reaction time, temperature, o-CNB/Pd ratio, Pd loading, hydrogen pressure) on the selective hydrogenation of ο-CNB catalyzed by UV-irradiated 0.2%Pd/NiO catalyst. Under the reaction conditions of 60 °C, 0.5 h, 1 MPa H2 pressure, 100% conversion of o-CNB, and 81.1% o-CAN selectivity were obtained, even at high molar ratio (8000:1) of o-CNB to Pd. View Full-Text
Keywords: UV-light irradiation; Pd/NiO catalyst; o-chloronitrobenzene; hydrogenation UV-light irradiation; Pd/NiO catalyst; o-chloronitrobenzene; hydrogenation
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MDPI and ACS Style

Jiang, W.; Xu, B.; Fan, G.; Zhang, K.; Xiang, Z.; Liu, X. UV Light-Assisted Synthesis of Highly Efficient Pd-Based Catalyst over NiO for Hydrogenation of o-Chloronitrobenzene. Nanomaterials 2018, 8, 240.

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