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Pazos Urrea M, Meilinger S, Herold F, Gopakumar J, Tusini E, De Giacinto A, Zimina A, Grunwaldt JD, Chen D, Rønning M. Aqueous Phase Reforming over Platinum Catalysts on Doped Carbon Supports: Exploring Platinum-Heteroatom Interactions. ACS Catal 2024; 14:4139-4154. [PMID: 38510663 PMCID: PMC10949196 DOI: 10.1021/acscatal.3c05385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/08/2024] [Accepted: 02/20/2024] [Indexed: 03/22/2024]
Abstract
A series of platinum catalysts supported on carbon nanofibers with various heteroatom dopings were synthesized to investigate the effect of the local platinum environment on the catalytic activity and selectivity in aqueous phase reforming (APR) of ethylene glycol (EG). Typical carbon dopants such as oxygen, nitrogen, sulfur, phosphorus, and boron were chosen based on their ability to bring acidic or basic functional groups to the carbon surface. In situ X-ray absorption spectroscopy (XAS) was used to identify the platinum oxidation state and platinum species formed during APR of EG through multivariate curve resolution alternating least-squares analysis, observing differences in activity, selectivity, and platinum local environment among the catalysts. The platinum-based catalyst on the nitrogen-doped carbon support demonstrated the most favorable properties for H2 production due to high Pt dispersion and basicity (H2 site time yield 22.7 h-1). Direct Pt-N-O coordination was identified by XAS in this catalyst. The sulfur-doped catalyst presented Pt-S contributions with the lowest EG conversion rate and minimal production of the gas phase components. Boron and phosphorus-doped catalysts showed moderate activity, which was affected by low platinum dispersion on the carbon support. The phosphorus-doped catalyst showed preferential selectivity to alcohols in the liquid phase, associated with the presence of acid sites and Pt-P contributions observed under APR conditions.
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Affiliation(s)
- Monica Pazos Urrea
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
| | - Simon Meilinger
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
| | - Felix Herold
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
| | - Jithin Gopakumar
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
| | - Enrico Tusini
- Institute
for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstraße 20, 76131 Karlsruhe, Germany
| | - Andrea De Giacinto
- Institute
for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstraße 20, 76131 Karlsruhe, Germany
| | - Anna Zimina
- Institute
of Catalysis Research and Technology, Karlsruhe
Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jan-Dierk Grunwaldt
- Institute
for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstraße 20, 76131 Karlsruhe, Germany
- Institute
of Catalysis Research and Technology, Karlsruhe
Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - De Chen
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
| | - Magnus Rønning
- Department
of Chemical Engineering, Norwegian University
of Science and Technology, 7491 Trondheim, Norway
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Zou T, Wang Y, Xu F. Defect-Engineered Charge Transfer in a PtCu/Pr xCe 1-xO 2 Carbon-Free Catalyst for Promoting the Methanol Oxidation and Oxygen Reduction Reactions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58296-58308. [PMID: 38064379 DOI: 10.1021/acsami.3c11446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Platinum (Pt) and Pt-based alloys have been extensively studied as efficient catalysts for both the anode and cathode of direct methanol fuel cells (DMFC). Defect engineering has been revealed to be practicable in tuning the charge transfer between Pt and transition metals/supports, which leads to the charge density rearrangement and facilitates the electrocatalytic performance. Herein, Pr-doped CeO2 nanocubes were used as the noncarbon support of a PtCu catalyst. The concentration and structure of oxygen vacancy (Vo) defects were engineered by Pr doping. Besides the Vo monomer, the oxygen vacancy with a linear structure is also observed, leading to the one-dimensional PtCu. The Vo concentration shows the volcanic scenario as Pr increased. Accordingly, the activities of PtCu/PrxCe1-xO2 toward methanol oxidation and oxygen reduction reactions exhibit the volcanic scenario. PtCu/Pr0.15Ce0.85O2 exhibits the optimal catalytic performance with the specific activity 3.57 times higher than that of Pt/C toward MOR and 1.34 times higher toward ORR. The MOR and ORR mass activities of PtCu/Pr0.15Ce0.85O2 reached 1.05 and 0.12 A·mg-1, which are 3.09 and 0.92 times the values of Pt/C, respectively. The abundant Vo afforded surplus electrons, which tailored the electron transfer between PtCu and PrxCe1-xO2, leading to enhanced catalytic performance of PtCu/PrxCe1-xO2. DFT calculations on PtCu/Pr0.15Ce0.85O2 revealed that Pr doping reduced the band gap of CeO2 and lowered the overpotential.
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Affiliation(s)
- Tianhua Zou
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, China
| | - Yifen Wang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, China
| | - Feng Xu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, China
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Wei YW, Yang G, Xu XX, Liu YY, Li BJ, Wang YZ, Zhao YX. Ultrafine Pt nanoparticles anchored on core-shell structured zeolite-carbon for efficient catalysis of hydrogen generation. RSC Adv 2023; 13:7673-7681. [PMID: 36908540 PMCID: PMC9993129 DOI: 10.1039/d3ra00358b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/07/2023] [Indexed: 03/10/2023] Open
Abstract
Ammonia borane (AB) is a potential hydrogen storage material with high-efficiency hydrolytic dehydrogenation under a suitable catalyst. Noble metal catalysts have drawn a lot of attention. In this study, a carbon-coated zeolite was obtained by calcination at high temperatures using glucose as a carbon source. Pt nanoparticles were fixed on a core-shell composite support by a simple chemical reduction method. A series of catalysts were prepared with different synthesis parameters. The results show that PSC-2 has excellent catalytic performance for hydrolytic dehydrogenation of AB in alkaline solution at room temperature, and the turnover frequency (TOF) is 593 min-1. The excellent catalytic performance is attributed to the carbon layer on the zeolite surface which inhibits the aggregation or deformation of metals in the catalytic reaction. The metal-support interaction activates the water and accelerates the rate-limiting step of hydrolysis. The activation energy (E a = 44 kJ mol-1) was calculated based on the reaction temperature. In addition, the kinetics of AB hydrolysis was studied, and the effects of catalyst concentration, AB concentration and NaOH concentration on AB hydrolysis rate were further investigated. The high-efficiency catalyst prepared in this work provides a new strategy for the development of chemical hydrogen production in the field of catalysis.
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Affiliation(s)
- Yue-Wei Wei
- School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
- Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University Taiyuan 030006 China
- Tobacco College of Henan Agricultural University Zhengzhou 450002 China
| | - Guang Yang
- Tobacco College of Henan Agricultural University Zhengzhou 450002 China
| | - Xi-Xi Xu
- Tobacco College of Henan Agricultural University Zhengzhou 450002 China
| | - Yan-Yan Liu
- College of Science, Henan Agricultural University Zhengzhou 450002 China
| | - Bao-Jun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University Zhengzhou 450001 China
| | - Yong-Zhao Wang
- School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
- Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University Taiyuan 030006 China
| | - Yong-Xiang Zhao
- School of Chemistry and Chemical Engineering, Shanxi University Taiyuan 030006 China
- Engineering Research Center of Ministry of Education for Fine Chemicals, Shanxi University Taiyuan 030006 China
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Nitrogen-containing carbon nanofibers as supports for bimetallic Pt-Mn catalysts in aqueous phase reforming of ethylene glycol. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Meng F, Yan H, Zhou X, Zeng J, Zhou X, Liu Y, Feng X, Chen D, Yang C. Carbon-Based Metal-Free Catalysts for Selective Oxidation of Glycerol to Glycolic Acid. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Afonnikova SD, Popov AA, Bauman YI, Plyusnin PE, Mishakov IV, Trenikhin MV, Shubin YV, Vedyagin AA, Korenev SV. Porous Co-Pt Nanoalloys for Production of Carbon Nanofibers and Composites. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7456. [PMID: 36363048 PMCID: PMC9658849 DOI: 10.3390/ma15217456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The controllable synthesis of carbon nanofibers (CNF) and composites based on CNF (Metals/CNF) is of particular interest. In the present work, the samples of CNF were produced via ethylene decomposition over Co-Pt (0-100 at.% Pt) microdispersed alloys prepared by a reductive thermolysis of multicomponent precursors. XRD analysis showed that the crystal structure of alloys in the composition range of 5-35 at.% Pt corresponds to a fcc lattice based on cobalt (Fm-3m), while the CoPt (50 at.% Pt) and CoPt3 (75 at.% Pt) samples are intermetallics with the structure P4/mmm and Pm-3m, respectively. The microstructure of the alloys is represented by agglomerates of polycrystalline particles (50-150 nm) interconnected by the filaments. The impact of Pt content in the Co1-xPtx samples on their activity in CNF production was revealed. The interaction of alloys with ethylene is accompanied by the generation of active particles on which the growth of nanofibers occurs. Plane Co showed low productivity (~5.5 g/gcat), while Pt itself exhibited no activity at all. The addition of 15-25 at.% Pt to cobalt catalyst leads to an increase in activity by 3-5 times. The maximum yield of CNF reached 40 g/gcat for Co0.75Pt0.25 sample. The local composition of the active alloyed particles and the structural features of CNF were explored.
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Affiliation(s)
- Sofya D. Afonnikova
- Boreskov Institute of Catalysis SB RAS, 5 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Anton A. Popov
- Nikolaev Institute of Inorganic Chemistry of SB RAS, 3 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Yury I. Bauman
- Boreskov Institute of Catalysis SB RAS, 5 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Pavel E. Plyusnin
- Nikolaev Institute of Inorganic Chemistry of SB RAS, 3 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Ilya V. Mishakov
- Boreskov Institute of Catalysis SB RAS, 5 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Mikhail V. Trenikhin
- Center of New Chemical Technologies BIC SB RAS, 54 Neftezavodskaya St., 644060 Omsk, Russia
| | - Yury V. Shubin
- Nikolaev Institute of Inorganic Chemistry of SB RAS, 3 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Aleksey A. Vedyagin
- Boreskov Institute of Catalysis SB RAS, 5 Lavrentyev Ave., 630090 Novosibirsk, Russia
| | - Sergey V. Korenev
- Nikolaev Institute of Inorganic Chemistry of SB RAS, 3 Lavrentyev Ave., 630090 Novosibirsk, Russia
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Li Y, Meng J, Zhu Y, Yang Y, Zhang X, Zheng X. Ultrafine Ru nanoparticles confined in graphene-doped porous g-C3N4 for effectively boosting ammonia borane hydrolysis. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Gao Z, Cai L, Miao C, Hui T, Wang Q, Li D, Feng J. Electronic Metal−Support Interaction Strengthened Pt/CoAl‐LDHs Catalyst for Selective Cinnamaldehyde Hydrogenation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhexi Gao
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Luoyu Cai
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Chenglin Miao
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Tianli Hui
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Qian Wang
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Dianqing Li
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering CHINA
| | - Junting Feng
- Beijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering 98#, No.15, Beisanhuan East Road 100029 Beijing CHINA
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Akbayrak S, Özkar S. Magnetically Isolable Pt 0/Co 3O 4 Nanocatalysts: Outstanding Catalytic Activity and High Reusability in Hydrolytic Dehydrogenation of Ammonia Borane. ACS APPLIED MATERIALS & INTERFACES 2021; 13:34341-34348. [PMID: 34255473 DOI: 10.1021/acsami.1c08362] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The development of a new platinum nanocatalyst to maximize the catalytic efficiency of the precious noble metal catalyst in releasing hydrogen from ammonia borane (AB) is reported. Platinum(0) nanoparticles are impregnated on a reducible cobalt(II,III) oxide surface, forming magnetically isolable Pt0/Co3O4 nanocatalysts, which have (i) superb catalytic activity providing a record turnover frequency (TOF) of 4366 min-1 for hydrogen evolution from the hydrolysis of AB at room temperature and (ii) excellent reusability, retaining the complete catalytic activity even after the 10th run of hydrolysis reaction. The outstanding activity and stability of the catalyst can be ascribed to the strong interaction between the platinum(0) nanoparticles and reducible cobalt oxide, which is supported by the results of XPS analysis. Pt0/Co3O4 exhibits the highest TOF among the reported platinum-nanocatalysts developed for hydrogen generation from the hydrolysis of AB.
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Affiliation(s)
- Serdar Akbayrak
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
- Department of Chemistry, Sinop University, 57000 Sinop, Turkey
- Department of Basic Sciences, Faculty of Engineering, Necmettin Erbakan University, 42090 Konya, Turkey
| | - Saim Özkar
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
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Akbayrak S, Özkar S. Cobalt ferrite supported platinum nanoparticles: Superb catalytic activity and outstanding reusability in hydrogen generation from the hydrolysis of ammonia borane. J Colloid Interface Sci 2021; 596:100-107. [PMID: 33838323 DOI: 10.1016/j.jcis.2021.03.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/02/2021] [Accepted: 03/08/2021] [Indexed: 01/15/2023]
Abstract
In this work, platinum(0) nanoparticles are deposited on the surface of magnetic cobalt ferrite forming magnetically separable Pt0/CoFe2O4 nanoparticles, which are efficient catalysts in H2 generation from the hydrolysis of ammonia borane. Catalytic activity of Pt0/CoFe2O4 nanoparticles decreases with the increasing platinum loading, parallel to the average particle size. Pt0/CoFe2O4 (0.23% wt. Pt) nanoparticles have an average diameter of 2.30 ± 0.47 nm and show an extraordinary turnover frequency of 3628 min-1 in releasing 3.0 equivalent H2 per mole of ammonia borane from the hydrolysis at 25.0 °C. Moreover, the magnetically separable Pt0/CoFe2O4 nanoparticles possess high reusability retaining 100% of their initial catalytic activity even after ten runs of hydrolysis. The superb catalytic activity and outstanding reusability make the Pt0/CoFe2O4 nanoparticles very attractive catalysts for the hydrogen generation systems in portable and stationary fuel cell applications.
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Affiliation(s)
- Serdar Akbayrak
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey; Department of Chemistry, Sinop University, 57000 Sinop, Turkey
| | - Saim Özkar
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
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