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Volume 12
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Article

Bimetallic PdCo Nanoparticles Loaded in Amine Modified Polyacrylonitrile Hollow Spheres as Efficient Catalysts for Formic Acid Dehydrogenation

by
Yulin Li
1,†,
Ping She
1,†,
Rundong Ding
1,
Da Li
2,
Hongtan Cai
1,
Xiufeng Hao
1,* and
Mingjun Jia
1
1
College of Chemistry, Jilin University, Changchun 130012, China
2
School of Stomatology, Jilin University, Changchun 130022, China
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Catalysts 2022, 12(1), 33; https://doi.org/10.3390/catal12010033
Submission received: 13 December 2021 / Revised: 24 December 2021 / Accepted: 27 December 2021 / Published: 29 December 2021
(This article belongs to the Special Issue Effect of the Modification of Catalysts on the Catalytic Performance)
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Abstract

Polyacrylonitrile hollow nanospheres (HPAN), derived from the polymerization of acrylonitrile in the presence of polystyrene emulsion (as template), were modified by surface amination with ethylenediamine (EDA), and then used as support for loading Pd or PdCo nanoparticles (NPs). The resultant bimetallic catalyst (named PdCo0.2/EDA-HPAN) can efficiently catalyze the additive-free dehydrogenation of formic acid with very high activity, selectivity and recyclability, showing turnover frequencies (TOF) of 4990 h−1 at 333 K and 915 h−1 at 303 K, respectively. The abundant surface amino groups and cyano group as well as the hollow structure of the support offer a suitable environment for achieving high dispersion of the Pd-based NPs on the surface of EDA-HPAN, thus generating ultra-small bimetallic NPs (bellow 1.0 nm) with high stability. The addition of a small portion of Co may adjust the electronic state of Pd species to a certain extent, which can further improve their capability for the dehydrogenation of formic acid. In addition, the surface amino groups may also play an important role in synergistically activating formic acid to generate formate, thus leading to efficient conversion of formic acid to hydrogen at mild conditions.
Keywords: formic acid decomposition; polyacrylonitrile hollow nanospheres; ethylenediamine modification; palladium cobalt nanoparticles formic acid decomposition; polyacrylonitrile hollow nanospheres; ethylenediamine modification; palladium cobalt nanoparticles

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MDPI and ACS Style

Li, Y.; She, P.; Ding, R.; Li, D.; Cai, H.; Hao, X.; Jia, M. Bimetallic PdCo Nanoparticles Loaded in Amine Modified Polyacrylonitrile Hollow Spheres as Efficient Catalysts for Formic Acid Dehydrogenation. Catalysts 2022, 12, 33. https://doi.org/10.3390/catal12010033

AMA Style

Li Y, She P, Ding R, Li D, Cai H, Hao X, Jia M. Bimetallic PdCo Nanoparticles Loaded in Amine Modified Polyacrylonitrile Hollow Spheres as Efficient Catalysts for Formic Acid Dehydrogenation. Catalysts. 2022; 12(1):33. https://doi.org/10.3390/catal12010033

Chicago/Turabian Style

Li, Yulin, Ping She, Rundong Ding, Da Li, Hongtan Cai, Xiufeng Hao, and Mingjun Jia. 2022. "Bimetallic PdCo Nanoparticles Loaded in Amine Modified Polyacrylonitrile Hollow Spheres as Efficient Catalysts for Formic Acid Dehydrogenation" Catalysts 12, no. 1: 33. https://doi.org/10.3390/catal12010033

APA Style

Li, Y., She, P., Ding, R., Li, D., Cai, H., Hao, X., & Jia, M. (2022). Bimetallic PdCo Nanoparticles Loaded in Amine Modified Polyacrylonitrile Hollow Spheres as Efficient Catalysts for Formic Acid Dehydrogenation. Catalysts, 12(1), 33. https://doi.org/10.3390/catal12010033

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