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Zhao N, Wang A, Xiao Y, Zhao D, Zhao C, Yin Z, Zhang W, Zhang W, Qiu R, Xing B. Fe Crystalline Phases in Fe/C Composites Modulated the Selective Adsorption of Pb(II) from Industrial Wastewater with Cd(II): An Electronic-Scale Perspective. Inorg Chem 2024; 63:15679-15691. [PMID: 38972034 DOI: 10.1021/acs.inorgchem.4c01587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Fe oxide or Fe0-based materials display weak removal capacity for Pb(II), especially in the presence of Cd(II), and the electronic-scale mechanisms are not reported. In this study, Fe3C(220) modified black carbon (BC) [Fe3C(220)@BC] with high adsorption and selectivity for Pb(II) from industrial wastewater with Cd(II) was developed. The quantitative experiment suggested that Fe species accounted for 80.5-100 and 18.4-33.8% of Pb(II) and Cd(II) removal, respectively. Based on X-ray absorption near-edge structure analysis, 57.3% of adsorbed Pb2+ was reduced to Pb0; however, 61.6% of Cd2+ existed on Fe3C@BC. Density functional theory simulation unraveled that Cd(II) adsorption was attributed to the cation-π interaction with BC, whereas that of Pb(II) was ascribed to the stronger interactions with different Fe phases following the order: Fe3C(220) > Fe0(110) > Fe3O4(311). Crystal orbital bond index and Hamilton population analyses were innovatively applied in the adsorption system and displayed a unique discovery: the stronger Pb(II) adsorption on Fe phases was mediated by a combination of covalent and ionic bonding, whereas ionic bonding was mainly accounted for Cd(II) adsorption. These findings open a new chapter in understanding the functions of different Fe phases in mediating the fate and transport of heavy metals in both natural and engineered systems.
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Affiliation(s)
- Nan Zhao
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Ao Wang
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Ye Xiao
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Dongye Zhao
- Department of Civil, Construction and Environmental Engineering, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, United States
| | - Chuanfang Zhao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ziqin Yin
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Weihua Zhang
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Weixian Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Rongliang Qiu
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
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2
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Yin Q, Wang H, Zhao J, Li C, Mao Y. A DFT study towards dynamic structures of iron and iron carbide and their effects on the activity of the Fischer-Tropsch process. RSC Adv 2023; 13:34262-34272. [PMID: 38020027 PMCID: PMC10663884 DOI: 10.1039/d3ra06467k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023] Open
Abstract
The Fe-based Fischer-Tropsch synthesis (FTS) catalyst shows a rich phase chemistry under pre-treatment and FTS conditions. The exact structural composition of the active site, whether iron or iron carbide (FeCx), is still controversial. Aiming to obtain an insight into the active sites and their role in affecting FTS activity, the swarm intelligence algorithm is implemented to search for the most stable Fe(100), Fe(110), Fe(210) surfaces with different carbon ratios. Then, ab initio atomistic thermodynamics and Wulffman construction were employed to evaluate the stability of these surfaces at different chemical potentials of carbon. Their FTS reactivity and selectivity were later assessed by semi-quantitative micro-kinetic equations. The results show that stability, reactivity, and selectivity of the iron are all affected by the carbonization process when the carbon ratio increases. Formation of the carbide, a rather natural process under experimental conditions, would moderately increase the turnover frequency (TOF), but both iron and iron carbide are active to the reaction.
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Affiliation(s)
- Qiang Yin
- Department of Forestry Engineering, School of Materials Science and Engineering, Central South University of Forestry & Technology Changsha China
- Hunan Engineering Research Centre of Full Life-cycle Energy-efficient Buildings and Environmental Health, Central South University of Forestry and Technology Changsha Hunan China
| | - Hanqing Wang
- School of Civil Engineering, Central South University of Forestry & Technology Changsha China
- Hunan Engineering Research Centre of Full Life-cycle Energy-efficient Buildings and Environmental Health, Central South University of Forestry and Technology Changsha Hunan China
| | - Jinping Zhao
- School of Civil Engineering, Central South University of Forestry & Technology Changsha China
| | - Chengjun Li
- School of Civil Engineering, Central South University of Forestry & Technology Changsha China
| | - Yu Mao
- School of Chemical Sciences, University of Auckland Auckland 1010 New Zealand
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3
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Adsorption and activation of CO on perfect and defective h-Fe7C3 surfaces for Fischer-Tropsch synthesis. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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4
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Duan Y, Sun H, Lu W. Theoretical study of CO adsorption and activation on h-Fe7C3 (11¯1) for Fischer-Tropsch synthesis. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Cui L, Liu C, Yao B, Edwards PP, Xiao T, Cao F. A review of catalytic hydrogenation of carbon dioxide: From waste to hydrocarbons. Front Chem 2022; 10:1037997. [PMID: 36304742 PMCID: PMC9592991 DOI: 10.3389/fchem.2022.1037997] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 09/21/2022] [Indexed: 12/01/2022] Open
Abstract
With the rapid development of industrial society and humankind’s prosperity, the growing demands of global energy, mainly based on the combustion of hydrocarbon fossil fuels, has become one of the most severe challenges all over the world. It is estimated that fossil fuel consumption continues to grow with an annual increase rate of 1.3%, which has seriously affected the natural environment through the emission of greenhouse gases, most notably carbon dioxide (CO2). Given these recognized environmental concerns, it is imperative to develop clean technologies for converting captured CO2 to high-valued chemicals, one of which is value-added hydrocarbons. In this article, environmental effects due to CO2 emission are discussed and various routes for CO2 hydrogenation to hydrocarbons including light olefins, fuel oils (gasoline and jet fuel), and aromatics are comprehensively elaborated. Our emphasis is on catalyst development. In addition, we present an outlook that summarizes the research challenges and opportunities associated with the hydrogenation of CO2 to hydrocarbon products.
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Affiliation(s)
- Lingrui Cui
- Engineering Research Center of Large Scale Reactor, East China University of Science and Technology, Shanghai, China
| | - Cao Liu
- Engineering Research Center of Large Scale Reactor, East China University of Science and Technology, Shanghai, China
| | - Benzhen Yao
- OXCCU Tech Ltd, Centre for Innovation and Enterprise, Begbroke Science Park, Oxford, United Kingdom
| | - Peter P. Edwards
- OXCCU Tech Ltd, Centre for Innovation and Enterprise, Begbroke Science Park, Oxford, United Kingdom
| | - Tiancun Xiao
- OXCCU Tech Ltd, Centre for Innovation and Enterprise, Begbroke Science Park, Oxford, United Kingdom
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, Oxford, United Kingdom
- *Correspondence: Fahai Cao, ; Tiancun Xiao,
| | - Fahai Cao
- Engineering Research Center of Large Scale Reactor, East China University of Science and Technology, Shanghai, China
- *Correspondence: Fahai Cao, ; Tiancun Xiao,
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6
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Liu Y, Lu K, Liu X, Liu J, Guo WP, Chen W, Peng Q, Song YF, Yang Y, Li YW, Wen XD. C2 weakens the turnover frequency during the melting of Fe xC y: insights from reactive MD simulations. NEW J CHEM 2022. [DOI: 10.1039/d1nj05114h] [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
The carbon accumulation in the form of C2 on the surface at high temperatures blocks the surface catalytic active sites, reducing the activity of melted FexCy nanoparticles.
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Affiliation(s)
- Yubing Liu
- State Key Laboratory of Chemical Resource Engineering, School of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Kuan Lu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Xingchen Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Jinjia Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
| | - Wen-Ping Guo
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Wei Chen
- State Key Laboratory of Chemical Resource Engineering, School of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Qing Peng
- Physics Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering, School of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yong Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
| | - Xiao-Dong Wen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
- National Energy Center for Coal to Clean Fuels, Synfuels China Co., Ltd, Huairou District, Beijing 101400, P. R. China
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8
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Wang P, Senftle TP. Theoretical insights into non-oxidative propane dehydrogenation over Fe 3C. Phys Chem Chem Phys 2021; 23:1401-1413. [PMID: 33393543 DOI: 10.1039/d0cp04669h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Identifying catalysts for non-oxidative propane dehydrogenation has become increasingly important due to the increasing demand for propylene coupled to decreasing propylene production from steam cracking as we shift to lighter hydrocarbon feedstocks. Commercialized propane dehydrogenation (PDH) catalysts are based on Pt or Cr, which are expensive or toxic, respectively. Recent experimental work has demonstrated that earth-abundant and environmentally-benign metals, such as iron, form in situ carbide phases that exhibit good activity and high selectivity for PDH. In this work, we used density functional theory (DFT) to better understand why the PDH reaction is highly selective on Fe3C surfaces. We use ab initio thermodynamics to identify stable Fe3C surface terminations as a function of reaction conditions, which then serve as our models for investigating rate-determining and selectivity-determining kinetic barriers during PDH. We find that carbon-rich surfaces show much higher selectivity for propylene production over competing cracking reactions compared to iron-rich surfaces, which is determined by comparing the propylene desorption barrier to the C-H scission barrier for dehydrogenation steps beyond propylene. Electronic structure analyses of the d-band center and the crystal orbital Hamilton population (COHP) of the carbides demonstrate that the high selectivity of carbon-rich surfaces originates from the disruption of surface Fe ensembles via carbon. Finally, we investigated the role of phosphate in suppressing coke formation and found that the electron-withdrawing character of phosphate destabilizes surface carbon.
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Affiliation(s)
- Peng Wang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA.
| | - Thomas P Senftle
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA.
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9
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Li T, Wen X, Yang Y, Li YW, Jiao H. Mechanistic Aspects of CO Activation and C–C Bond Formation on the Fe/C- and Fe-Terminated Fe3C(010) Surfaces. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04433] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Teng Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
| | - Xiaodong Wen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
| | - Yong Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
| | - Haijun Jiao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein Strasse 29a, 18059 Rostock, Germany
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10
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Yin J, He Y, Liu X, Zhou X, Huo CF, Guo W, Peng Q, Yang Y, Jiao H, Li YW, Wen XD. Visiting CH4 formation and C1 + C1 couplings to tune CH4 selectivity on Fe surfaces. J Catal 2019. [DOI: 10.1016/j.jcat.2019.03.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Rivera de la Cruz JG, Sabbe MK, Reyniers MF. First principle study of chain termination reactions during Fischer-Tropsch Synthesis on χ -Fe 5 C 2 (010). MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Yu X, Zhang X, Jin L, Feng G. CO adsorption, oxidation and carbonate formation mechanisms on Fe 3O 4 surfaces. Phys Chem Chem Phys 2018. [PMID: 28642956 DOI: 10.1039/c7cp02760e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
By means of density functional theory calculations that account for the on-site Coulomb interaction via a Hubbard term (DFT+U), we systematically investigated CO adsorption on Fe3O4 surfaces at different coverages. It has been found that more than one CO can coadsorb on one surface iron atom on both Fetet1 and Feoct2 terminations of Fe3O4(111). The uncapped oxygen atom is the active site for CO oxidation on both Fetet1 and Feoct2 terminations of Fe3O4(111). For Fe3O4(110), two CO molecules prefer to coadsorb on one surface iron atom on the A layer; CO prefers to adsorb at the bridge site of the surface octahedral iron atoms at low coverage, while CO prefers to adsorb at the surface tetrahedral iron atom at high coverage on the B layer. It has been found that the surface oxygen atom which is not coordinated to the tetrahedral iron atom is the active site for CO oxidation on the B termination of Fe3O4(001). On the Fe3O4 surfaces, the formation of carbonate has been found to be very stable thermodynamically, which agrees well with experiments. The adsorption mechanism has been analyzed on the basis of projected density of states (PDOS).
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Affiliation(s)
- Xiaohu Yu
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Sciences, Shaanxi University of Technology, Hanzhong 723000, China.
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13
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Yang Y, Cui J, Li L, Lu H, Li DY, Yan MF. Carbon adsorption on doped cementite surfaces for effective catalytic growth of diamond-like carbon: a first-principles study. Phys Chem Chem Phys 2017; 19:32341-32348. [PMID: 29184945 DOI: 10.1039/c7cp06598a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We studied the adsorption of carbon on (100), (010) and (001) surfaces of alloyed cementite (Fe2MC with M = Cr, Mn, Mo, Ni and V), in comparison with that of cementite (Fe3C), to predict the catalytic effect of the element-doped cementite on diamond-like carbon (DLC) growth through first-principles analysis. The adsorption of carbon on the alloyed cementite surface is related to its surface stability. The more stable a surface, the weaker its adsorption capability. Mn, Mo, Cr or V alloyed cementite have a higher adsorption energy than unalloyed cementite. A correlation has also been found between the adsorption and the transferred charge based on Bader charge analysis. Among all the types of doped cementite under study, Fe2NiC possesses the strongest catalytic activity for DLC growth based on the formation energy of diamond carbon. Doping cementite with the appropriate elements provides a promising means to improve the catalytic activity of Fe3C for effective DLC growth.
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Affiliation(s)
- Yang Yang
- National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China.
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14
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Zuluaga S, Manchanda P, Zhang YY, Pantelides ST. Design of Optimally Stable Molecular Coatings for Fe-Based Nanoparticles in Aqueous Environments. ACS OMEGA 2017; 2:4480-4487. [PMID: 31457740 PMCID: PMC6641751 DOI: 10.1021/acsomega.7b00762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 07/28/2017] [Indexed: 06/10/2023]
Abstract
Magnetic nanoparticles are widely used in biomedical and oil-well applications in aqueous, often harsh environments. The pursuit for high-saturation magnetization together with high stability of the molecular coating that prevents agglomeration and oxidation remains an active research area. Here, we report a detailed analysis of the criteria for the stability of molecular coatings in aqueous environments along with extensive first-principles calculations for magnetite, which has been widely used, and cementite, a promising emerging candidate. A key result is that the simple binding energies of molecules cannot be used as a definitive indicator of relative stability in a liquid environment. Instead, we find that H+ ions and water molecules facilitate the desorption of molecules from the surface. We further find that, because of differences in the geometry of crystal structures, molecules generally form stronger bonds on cementite surfaces than they do on magnetite surfaces. The net result is that molecular coatings of cementite nanoparticles are more stable. This feature, together with the better magnetic properties, makes cementite nanoparticles a promising candidate for biomedical and oil-well applications.
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Affiliation(s)
- Sebastian Zuluaga
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Priyanka Manchanda
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Yu-Yang Zhang
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Sokrates T. Pantelides
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
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Borji F, Pour AN, Karimi J, Izadyar M, Keyvanloo Z, Hashemian M. The Molecular Adsorption of Carbon Monoxide on Cobalt Surfaces: A Dft Study. PROGRESS IN REACTION KINETICS AND MECHANISM 2017. [DOI: 10.3184/146867816x14799161258479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The theoretical molecular adsorption energies, vibrational frequencies and total density of states of carbon monoxide (CO) on the (100), (110) and (111) surfaces of the face-centred cubic (FCC) crystalline phase of metallic cobalt were investigated using density functional theory calculations. The on-top adsorption state and three surface coverages were used for comparison of the results. The geometries of cobalt FCC surfaces, as well as those with adsorbed CO molecules and the CO binding energies were calculated with the generalised gradient approximation (GGA-D) using the revised revPBE-D3(BJ) functional. The theoretical results for adsorption energies of carbon monoxide were proportional to the electron density of the cobalt surfaces, according to the following order: FCC (100) > FCC (110) > FCC (111). For CO adsorbed on the surface of cobalt metal the C–O distance increases, producing a weakening of the bond and the calculated stretching frequency decreases when compared with the isolated molecule.
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Affiliation(s)
- Fatemeh Borji
- Department of Chemistry, Ferdowsi University of Mashhad, PO Box 9177948974, Mashhad, Iran
| | - Ali Nakhaei Pour
- Department of Chemistry, Ferdowsi University of Mashhad, PO Box 9177948974, Mashhad, Iran
| | - Javad Karimi
- Research and Development Centre, Golriz Company, Toos Industrial Park, Mashhad, Iran
| | - Mohammad Izadyar
- Department of Chemistry, Ferdowsi University of Mashhad, PO Box 9177948974, Mashhad, Iran
| | - Zahra Keyvanloo
- Department of Chemistry, Ferdowsi University of Mashhad, PO Box 9177948974, Mashhad, Iran
| | - Mohamadreza Hashemian
- Research and Development Centre, Golriz Company, Toos Industrial Park, Mashhad, Iran
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Ma M, You S, Wang W, Liu G, Qi D, Chen X, Qu J, Ren N. Biomass-Derived Porous Fe 3C/Tungsten Carbide/Graphitic Carbon Nanocomposite for Efficient Electrocatalysis of Oxygen Reduction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32307-32316. [PMID: 27933842 DOI: 10.1021/acsami.6b10804] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The oxygen-reduction reaction (ORR) draws an extensive attention in many applications, and there is a growing interest to develop effective ORR electrocatalysts. Iron carbide (Fe3C) is a promising alternative to noble metals (e.g., platinum), but its performances need further improvement, and the real role of the Fe3C phase remains unclear. In this study, we synthesize Fe3C/tungsten carbide/graphitic carbon (Fe3C/WC/GC) nanocomposites, with waste biomass (i.e., pomelo peel) serving as carbon source, using a facile, one-step carbon thermal-reduction method. The nanocomposite is characterized by a porous structure consisting of uniform Fe3C nanoparticles encased by graphitic carbon (GC) layers with highly dispersed nanosized WC. The Fe3C provides the active sites for ORR, while the graphitic layers and WC nanoparticles can stibilize the Fe3C surface, preventing it from dissociation in the electrolyte. The Fe3C/WC/GC nanocomposite is highly active, selective, and stable toward four-electron ORR in pH-neutral electrolyte, which results in a 67.82% higher power density than that of commercial Pt/C and negligible voltage decay during a long-term phase of a 33 cycle (2200 h) operation of a microbial fuel cell (MFC). The density functional theory (DFT) calculations suggest high activity for splitting the O-O bond of molecular oxygen on the surface of Fe3C.
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Affiliation(s)
- Ming Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , 73 Huanghe Road, Nangang District, Harbin 150090, P. R. China
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , 73 Huanghe Road, Nangang District, Harbin 150090, P. R. China
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , 73 Huanghe Road, Nangang District, Harbin 150090, P. R. China
| | - Guoshuai Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , 73 Huanghe Road, Nangang District, Harbin 150090, P. R. China
| | - Dianpeng Qi
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue 639798, Singapore
| | - Xiaodong Chen
- School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue 639798, Singapore
| | - Jiuhui Qu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 200085, P. R. China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , 73 Huanghe Road, Nangang District, Harbin 150090, P. R. China
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17
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Zhao S, Liu XW, Huo CF, Wen XD, Guo W, Cao D, Yang Y, Li YW, Wang J, Jiao H. Morphology control of K2O promoter on Hägg carbide (χ-Fe5C2) under Fischer–Tropsch synthesis condition. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.07.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Adsorption, Thermodynamic and Quantum Chemical Studies of 1-hexyl-3-methylimidazolium Based Ionic Liquids as Corrosion Inhibitors for Mild Steel in HCl. MATERIALS 2015. [PMCID: PMC5455723 DOI: 10.3390/ma8063607] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The inhibition of mild steel corrosion in 1 M HCl solution by some ionic liquids (ILs) namely, 1-hexyl-3-methylimidazolium trifluoromethanesulfonate [HMIM][TfO], 1-hexyl-3-methylimidazolium tetrafluoroborate [HMIM][BF4], 1-hexyl-3-methylimidazolium hexafluorophosphate [HMIM][PF6], and 1-hexyl-3-methylimidazolium iodide [HMIM][I] was investigated using electrochemical measurements, spectroscopic analyses and quantum chemical calculations. All the ILs showed appreciably high inhibition efficiency. At 303 K, the results of electrochemical measurements indicated that the studied ILs are mixed-type inhibitors. The adsorption studies showed that all the four ILs adsorb spontaneously on steel surface with [HMIM][TfO], [HMIM][BF4] and [HMIM][I] obeying Langmuir adsorption isotherm, while [HMIM][PF6] conformed better with Temkin adsorption isotherm. Spectroscopic analyses suggested the formation of Fe/ILs complexes. Some quantum chemical parameters were calculated to corroborate experimental results.
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Zhao S, Liu XW, Huo CF, Li YW, Wang J, Jiao H. Determining surface structure and stability of ε-Fe2C, χ-Fe5C2, θ-Fe3C and Fe4C phases under carburization environment from combined DFT and atomistic thermodynamic studies. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/2055075814y.0000000007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Shu Zhao
- State Key Laboratory of Coal ConversionInstitute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Xing-Wu Liu
- National Energy Center for Coal to Liquids Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
| | - Chun-Fang Huo
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Yong-Wang Li
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein Strasse 29a, 18059 Rostock, Germany
| | - Jianguo Wang
- State Key Laboratory of Coal ConversionInstitute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Haijun Jiao
- National Energy Center for Coal to Liquids Synfuels China Co., Ltd, Huairou District, Beijing 101400, China
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Tian X, Wang T, Yang Y, Li YW, Wang J, Jiao H. Structures and energies of Cu clusters on Fe and Fe3C surfaces from density functional theory computation. Phys Chem Chem Phys 2014; 16:26997-7011. [DOI: 10.1039/c4cp04012k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coverage and surface dependent adsorption configurations of Cun clusters on the Fe and Fe3C surfaces.
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Affiliation(s)
- Xinxin Tian
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan, China
- National Energy Center for Coal to Liquids
| | - Tao Wang
- Leibniz-Institut für Katalyse eV., an der Universität Rostock
- 18059 Rostock, Germany
| | - Yong Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan, China
- National Energy Center for Coal to Liquids
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan, China
- National Energy Center for Coal to Liquids
| | - Jianguo Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan, China
| | - Haijun Jiao
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan, China
- Leibniz-Institut für Katalyse eV., an der Universität Rostock
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Chonco ZH, Ferreira A, Lodya L, Claeys M, van Steen E. Comparing silver and copper as promoters in Fe-based Fischer–Tropsch catalysts using delafossite as a model compound. J Catal 2013. [DOI: 10.1016/j.jcat.2013.08.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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de Smit E, Cinquini F, Beale AM, Safonova OV, van Beek W, Sautet P, Weckhuysen BM. Stability and Reactivity of ϵ−χ−θ Iron Carbide Catalyst Phases in Fischer−Tropsch Synthesis: Controlling μC. J Am Chem Soc 2010; 132:14928-41. [PMID: 20925335 DOI: 10.1021/ja105853q] [Citation(s) in RCA: 249] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emiel de Smit
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Fabrizio Cinquini
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Andrew M. Beale
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Olga V. Safonova
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Wouter van Beek
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Philippe Sautet
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands, Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, École Normale Supérieure de Lyon and CNRS, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France, Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, F-38043 Grenoble Cedex, France, and Dipartimento di Scienze e Tecnologie Avanzate and Nano-SiSTeMI
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Huo CF, Li YW, Wang J, Jiao H. Insight into CH(4) formation in iron-catalyzed Fischer-Tropsch synthesis. J Am Chem Soc 2010; 131:14713-21. [PMID: 19780531 DOI: 10.1021/ja9021864] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Spin-polarized density functional theory calculations have been performed to investigate the carbon pathways and hydrogenation mechanism for CH(4) formation on Fe(2)C(011), Fe(5)C(2)(010), Fe(3)C(001), and Fe(4)C(100). We find that the surface C atom occupied sites are more active toward CH(4) formation. In Fischer-Tropsch synthesis (FTS), CO direct dissociation is very difficult on perfect Fe(x)C(y) surfaces, while surface C atom hydrogenation could occur easily. With the formation of vacancy sites by C atoms escaping from the Fe(x)C(y) surface, the CO dissociation barrier decreases largely. As a consequence, the active carburized surface is maintained. Based on the calculated reaction energies and effective barriers, CH(4) formation is more favorable on Fe(5)C(2)(010) and Fe(2)C(011), while Fe(4)C(100) and Fe(3)C(001) are inactive toward CH(4) formation. More importantly, it is revealed that the reaction energy and effective barrier of CH(4) formation have a linear relationship with the charge of the surface C atom and the d-band center of the surface, respectively. On the basis of these correlations, one can predict the reactivity of all active surfaces by analyzing their surface properties and further give guides for catalyst design in FTS.
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Affiliation(s)
- Chun-Fang Huo
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, People's Republic of China
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BAO LL, HUO CF, DENG CM, LI YW. Structure and stability of the crystal Fe2C and low index surfaces. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s1872-5813(09)60012-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Maitlis PM, Zanotti V. The role of electrophilic species in the Fischer–Tropsch reaction. Chem Commun (Camb) 2009:1619-34. [PMID: 19294244 DOI: 10.1039/b822320n] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Peter M Maitlis
- Department of Chemistry, The University of Sheffield, Sheffield, UK S3 7HF.
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Liao XY, Wang SG, Ma ZY, Wang J, Li YW, Jiao H. Density functional theory study of H2 adsorption on the (100), (001) and (010) surfaces of Fe3C. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.06.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Steynberg PJ, van den Berg JA, Janse van Rensburg W. Bulk and surface analysis of Hägg Fe carbide (Fe(5)C(2)): a density functional theory study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2008; 20:064238. [PMID: 21693899 DOI: 10.1088/0953-8984/20/6/064238] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A comprehensive density functional theory (DFT) study analysing the bulk and various low Miller index surfaces of Hägg Fe carbide (Fe(5)C(2)), considered to be the active phase in Fe-catalysed Fischer-Tropsch synthesis (FTS), has been carried out. The DFT determined bulk structure of Hägg Fe carbide (Fe(5)C(2)) is found to be in good agreement with reported monoclinic (C 2/c) XRD data, independently of whether a monoclinic (C 2/c) or triclinic ([Formula: see text]) bulk structure is used as input for calculations. Attention is focused on the construction of a surface energy stability trend with subsequent correlation with particular surface properties. It is found that a (010) Miller index plane results in the most stable surface (2.468 J m(-2)), while a (101) surface is the least stable (3.281 J m(-2)). The systematic comparison of calculated surface energies with surface properties such as the number of dangling bonds and surface atom density (within a broken bond model), as well as unrelaxed surface energies, relative ruggedness of surfaces, degree of surface relaxation upon optimization, total spin density changes of surfaces compared to the bulk, etc, result in only an approximate correlation with the surface stability trend in selected cases. From the results it is concluded that the relative surface energies fall in a narrow range and that a large number of additional surfaces may be defined, e.g. from higher Miller index planes, sharing similar surface energy values. The results serve to demonstrate the rich complexity and diverse nature of the Fe carbide phase responsible for FTS, effectively laying the foundation for further fundamental studies.
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Affiliation(s)
- P J Steynberg
- Sasol Technology (Pty) Ltd, R&D Division, 1 Klasie Havenga Road, Sasolburg 1947, South Africa
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