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Aneggi E, Campagnolo F, Segato J, Zuccaccia D, Baratta W, Llorca J, Trovarelli A. Solvent-free selective oxidation of benzyl alcohol using Ru loaded ceria-zirconia catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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2
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Samadi P, Binczarski MJ, Maniukiewicz W, Pawlaczyk A, Rogowski J, Szubiakiewicz E, Szynkowska-Jozwik MI, Witonska IA. Zn Modification of Pd/TiO 2/Ti Catalyst for CO Oxidation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1216. [PMID: 36770219 PMCID: PMC9921276 DOI: 10.3390/ma16031216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/22/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
The main goal of this study was to modify the activity of Pd/TiO2/Ti catalyst in the reaction of CO oxidation by the addition of Zn. Plasma electrolytic oxidation (PEO) of Ti wire was conducted to produce a uniform porous layer of TiO2. A mixture of Pd and Zn was then introduced by means of adsorption. After reduction treatment, the activity of the samples was examined by oxidation of 5% CO in a temperature range from 80-350 °C. Model catalysts with sufficient amounts of the metals for physico-chemical investigation were prepared to further investigate the reaction between Pd and Zn during CO oxidation. The structures and compositions of the samples were investigated using scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), time-of-flight secondary ion mass spectrometry (TOF-SIMS), inductively coupled plasma mass spectrometry (ICP-MS), Fourier transform infrared (FTIR), and X-ray diffraction (XRD). Modification of Pd/TiO2/Ti catalyst by Zn with a Pd:Zn atomic ratio of 2:1 decreased the temperature of complete CO oxidation from 220 °C for Pd/TiO2/Ti to 180 °C for Pd-Zn/TiO2/Ti. The temperature of 50% CO conversion on Pd-Zn(2:1)/TiO2/Ti was around 55 °C lower than in the reaction on monometallic Pd catalyst. The addition of Zn to the Pd catalyst lowered the binding energy of CO on the surface and improved the dissociative adsorption of oxygen, facilitating the oxidation of CO. FTIR showed that the bridging form of adsorbed CO is preferred on bimetallic systems. Analysis of the surface compositions of the samples (SEM-EDS, TOF-SIMS) showed higher amounts of oxygen on the bimetallic systems.
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Bellomi S, Barlocco I, Chen X, Delgado JJ, Arrigo R, Dimitratos N, Roldan A, Villa A. Enhanced stability of sub-nanometric iridium decorated graphitic carbon nitride for H 2 production upon hydrous hydrazine decomposition. Phys Chem Chem Phys 2023; 25:1081-1095. [PMID: 36520142 DOI: 10.1039/d2cp04387d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Stabilizing metal nanoparticles is vital for large scale implementations of supported metal catalysts, particularly for a sustainable transition to clean energy, e.g., H2 production. In this work, iridium sub-nanometric particles were deposited on commercial graphite and on graphitic carbon nitride by a wet impregnation method to investigate the metal-support interaction during the hydrous hydrazine decomposition reaction. To establish a structure-activity relationship, samples were characterized by transmission electron microscopy and X-ray photoelectron spectroscopy. The catalytic performance of the synthesized materials was evaluated under mild reaction conditions, i.e. 323 K and ambient pressure. The results showed that graphitic carbon nitride (GCN) enhances the stability of Ir nanoparticles compared to graphite, while maintaining remarkable activity and selectivity. Simulation techniques including Genetic Algorithm geometry screening and electronic structure analyses were employed to provide a valuable atomic level understanding of the metal-support interactions. N anchoring sites of GCN were found to minimise the thermodynamic driving force of coalescence, thus improving the catalyst stability, as well as to lead charge redistributions in the cluster improving the resistance to poisoning by decomposition intermediates.
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Affiliation(s)
- Silvio Bellomi
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy.
| | - Ilaria Barlocco
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy.
| | - Xiaowei Chen
- Departamento de Ciencia de los Materiales, Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, Puerto Real (Cádiz) E-11510, Spain
| | - Juan J Delgado
- Departamento de Ciencia de los Materiales, Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, Puerto Real (Cádiz) E-11510, Spain
| | - Rosa Arrigo
- School of Science, Engineering and Environment, University of Salford, M5 4WT, Manchester, UK
| | - Nikolaos Dimitratos
- Dipartimento di Chimica Industriale "Toso Montanari", Alma Mater Studiorum Università di Bologna, Viale Risorgimento 4, Bologna 40126, Italy.,Center for Chemical Catalysis-C3, Alma Mater Studiorum Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Alberto Roldan
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT, Cardiff, UK.
| | - Alberto Villa
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy.
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Production of Iso-octanoic Acid Via Efficiently Synergetic Catalysis of Zn-Modified ZSM-5/HMS. Catal Letters 2022. [DOI: 10.1007/s10562-021-03743-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Barlocco I, Bellomi S, Tumiati S, Fumagalli P, Dimitratos N, Roldan A, Villa A. Selective decomposition of hydrazine over metal free carbonaceous materials. Phys Chem Chem Phys 2022; 24:3017-3029. [PMID: 35037926 DOI: 10.1039/d1cp05179b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report a combined experimental and computational investigation unravelling the hydrazine hydrate decomposition reaction on metal-free catalysts. The study focuses on commercial graphite and two different carbon nanofibers, pyrolytically stripped (CNF-PS) and high heat-treated (CNF-HHT), respectively, treated at 700 and 3000 °C to increase their intrinsic defects. Raman spectroscopy demonstrated a correlation between the initial catalytic activity and the intrinsic defectiveness of carbonaceous materials. CNF-PS with higher defectivity (ID/IG = 1.54) was found to be the best performing metal-free catalyst, showing a hydrazine conversion of 94% after 6 hours of reaction and a selectivity to H2 of 89%. In addition, to unveil the role of NaOH, CNF-PS was also tested in the absence of alkaline solution, showing a decrease in the reaction rate and selectivity to H2. Density functional theory (DFT) demonstrated that the single vacancies (SV) present on the graphitic layer are the only active sites promoting hydrazine decomposition, whereas other defects such as double vacancy (DV) and Stone-Wales (SW) defects are unable to adsorb hydrazine fragments. Two symmetrical and one asymmetrical dehydrogenation pathways were found, in addition to an incomplete decomposition pathway forming N2 and NH3. On the most stable hydrogen production pathway, the effect of the alkaline medium was elucidated through calculations concerning the diffusion and recombination of atomic hydrogen. Indeed, the presence of NaOH helps the extraction of H species without additional energetic barriers, as opposed to the calculations performed in a polarizable continuum medium. Considering the initial hydrazine dissociative adsorption, the first step of the dehydrogenation pathway is more favourable than the scission of the N-N bond, which leads to NH3 as the product. This first reaction step is crucial to define the reaction mechanisms and the computational results are in agreement with the experimental ones. Moreover, comparing two different hydrogen production pathways (with and without diffusion and recombination), we confirmed that the presence of sodium hydroxide in the experimental reaction environment can modify the energy gap between the two pathways, leading to an increased reaction rate and selectivity to H2.
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Affiliation(s)
- Ilaria Barlocco
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, Milano I-20133, Italy.
| | - Silvio Bellomi
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, Milano I-20133, Italy.
| | - Simone Tumiati
- Dipartimento di Scienze della Terra Ardito Desio, Università degli Studi di Milano, via Mangiagalli 34, Milano I-20133, Italy
| | - Patrizia Fumagalli
- Dipartimento di Scienze della Terra Ardito Desio, Università degli Studi di Milano, via Mangiagalli 34, Milano I-20133, Italy
| | - Nikolaos Dimitratos
- Dipartimento di Chimica Industriale e dei Materiali, ALMA MATER STUDIORUM Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Alberto Roldan
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, CF10 3AT, Cardiff, UK.
| | - Alberto Villa
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, Milano I-20133, Italy.
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Tierney GF, Alijani S, Panchal M, Decarolis D, Gutierrez MB, Mohammed KMH, Callison J, Gibson EK, Thompson PBJ, Collier P, Dimitratos N, Corbos EC, Pelletier F, Villa A, Wells PP. Controlling the Production of Acid Catalyzed Products of Furfural Hydrogenation by Pd/TiO
2. ChemCatChem 2021. [DOI: 10.1002/cctc.202101036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- George F. Tierney
- School of Chemistry University of Southampton Southampton SO17 1BJ UK
- UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory Harwell, Didcot OX11 0FA UK
| | - Shahram Alijani
- Dipartimento di Chimica Universitá degli Studi di Milano 20133 Milano Italy
| | - Monik Panchal
- UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory Harwell, Didcot OX11 0FA UK
- Department of Chemistry University College London London WC1H OAJ UK
| | - Donato Decarolis
- UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory Harwell, Didcot OX11 0FA UK
- Cardiff Catalysis Institute School of Chemistry Cardiff University Cardiff CF10 3AT UK
| | | | | | - June Callison
- UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory Harwell, Didcot OX11 0FA UK
- Cardiff Catalysis Institute School of Chemistry Cardiff University Cardiff CF10 3AT UK
| | - Emma K. Gibson
- School of Chemistry University of Glasgow Glasgow G12 8QQ UK
| | - Paul B. J. Thompson
- BM28/XMaS UK CRG ESRF 38043 Grenoble France
- Oliver Lodge Laboratory Department of Physics University of Liverpool Liverpool L69 7ZE UK
| | - Paul Collier
- Johnson Matthey Technology Centre Sonning Common, Reading RG4 9NH UK
| | - Nikolaos Dimitratos
- Dipartimento di Chimica Industriale “Toso Montanari” Alma Mater Studiorum Universitá di Bologna 40136 Bologna Italy
| | - E. Crina Corbos
- Johnson Matthey Technology Centre Sonning Common, Reading RG4 9NH UK
| | | | - Alberto Villa
- Dipartimento di Chimica Universitá degli Studi di Milano 20133 Milano Italy
| | - Peter P. Wells
- School of Chemistry University of Southampton Southampton SO17 1BJ UK
- UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory Harwell, Didcot OX11 0FA UK
- Diamond Light Source Harwell Science and Innovation Campus Chilton, Didcot OX11 0DE UK
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Nasiri A, Khalilzadeh MA, Zareyee D. A novel magnetic starch nanocomposite as a green heterogeneous support for immobilization of Cu nanoparticles and selective catalytic application in eco-friendly media. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1980031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Atefeh Nasiri
- Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
| | | | - Daryoush Zareyee
- Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
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Barlocco I, Capelli S, Lu X, Tumiati S, Dimitratos N, Roldan A, Villa A. Role of defects in carbon materials during metal-free formic acid dehydrogenation. NANOSCALE 2020; 12:22768-22777. [PMID: 33174567 DOI: 10.1039/d0nr05774f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Commercial graphite (GP), graphite oxide (GO), and two carbon nanofibers (CNF-PR24-PS and CNF-PR24-LHT) were used as catalysts for the metal-free dehydrogenation reaction of formic acid (FA) in the liquid phase. Raman and XPS spectroscopy demonstrated that the activity is directly correlated with the defectiveness of the carbon material (GO > CNF-PR24-PS > CNF-PR24-LHT > GP). Strong deactivation phenomena were observed for all the catalysts after 5 minutes of reaction. Density functional theory (DFT) calculations demonstrated that the single vacancies present on the graphitic layers are the only active sites for FA dehydrogenation, while other defects, such as double vacancies and Stone-Wales (SW) defects, rarely adsorb FA molecules. Two different reaction pathways were found, one passing through a carboxyl species and the other through a hydroxymethylene intermediate. In both mechanisms, the active sites were poisoned by an intermediate species such as CO and atomic hydrogen, explaining the catalyst deactivation observed in the experimental results.
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Affiliation(s)
- Ilaria Barlocco
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy.
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Nasrollahzadeh M, Shafiei N, Nezafat Z, Soheili Bidgoli NS, Soleimani F. Recent progresses in the application of cellulose, starch, alginate, gum, pectin, chitin and chitosan based (nano)catalysts in sustainable and selective oxidation reactions: A review. Carbohydr Polym 2020; 241:116353. [DOI: 10.1016/j.carbpol.2020.116353] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/07/2020] [Accepted: 04/19/2020] [Indexed: 10/24/2022]
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Yin Y, Yang H, Xin Z, Zhang C, Xu G, Wang Y, Dong G, Zhang X. β-mCoPc/Cu-BDC composites for oxidation of benzyl alcohol to benzaldehyde. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1784406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yanbing Yin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Hang Yang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Zhaosong Xin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Chengli Zhang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Guopeng Xu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Yumeng Wang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Guohua Dong
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Xun Zhang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
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Sheikhi E, Adib M, Karajabad MA. Oxidation of Benzylic Alcohols to Aromatic Aldehydes by DMSO/Water/I 2: A Chemoselective Oxidation. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1716621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ehsan Sheikhi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mehdi Adib
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
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Abstract
Selective oxidation of benzyl alcohol to benzaldehyde was carried out with MoO2 nanoparticles (MoO2 NPs). MoO2 NPs were synthesized by two different approaches and characterized by several techniques. The synthesis was done by a hydrothermal procedure using ethylenediamine and either Fe2O3 or hydroquinone. In the latter case, an additional calcination step under N2 was performed to eliminate passivating agents at the surface of the nanoparticles. The synthesized nanocatalysts showed similar catalytic properties, being efficient catalysts in the oxidation of benzyl alcohol. High substrate conversion and product selectivity were achieved under all tested conditions. Studies were conducted using two different oxidants: tert-butyl hydroperoxide and hydrogen peroxide, in our continuous effort to obtain more efficient catalysts for more sustainable catalytic processes. When H2O2 was used as the oxidant, 94% yield was achieved with 100% selectivity for benzaldehyde, which was a very promising result to undergo other studies with this system. Moreover, to elucidate some aspects of the reaction mechanism, a study was conducted, and it was possible to conclude that the reaction undergoes, to some extent, through a radical mechanism with both oxidants.
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Li G, Wang L, Wen C, Li F, Wu P, Wang B, Shen K, Zhang Y, Zhang S, Xiao R. Deep insight into the catalytic removal mechanism of a multi-active center catalyst for chlorobenzene: an experiment and density functional theory study. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01372b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic oxidation is a promising dioxin purification removal technique due to high efficiency and low consumption, as well as no secondary pollution.
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Phuangburee T, Solonenko D, Plainpan N, Thamyongkit P, Zahn DRT, Unarunotai S, Tuntulani T, Leeladee P. Surface modification of graphene oxide via noncovalent functionalization with porphyrins for selective photocatalytic oxidation of alcohols. NEW J CHEM 2020. [DOI: 10.1039/d0nj01141j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
GO–porphyrin composites were simply prepared by a self-assembly process. The noncovalent interactions between the porphyrins and oxygen-containing functional groups on GO play a crucial role in controlling their photocatalytic activities.
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Affiliation(s)
- Tossapong Phuangburee
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Dmytro Solonenko
- Semiconductor Physics
- Chemnitz University of Technology
- 09107 Chemnitz
- Germany
| | - Nukorn Plainpan
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | | | | | - Sakulsuk Unarunotai
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Thawatchai Tuntulani
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Pannee Leeladee
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
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Nasrollahzadeh M, Sajjadi M, Shokouhimehr M, Varma RS. Recent developments in palladium (nano)catalysts supported on polymers for selective and sustainable oxidation processes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.010] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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