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Gavrilović L, Brandin J, Holmen A, Venvik HJ, Myrstad R, Blekkan EA. Deactivation of Co-Based Fischer–Tropsch Catalyst by Aerosol Deposition of Potassium Salts. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04498] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ljubiša Gavrilović
- Department
of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim, Norway
| | - Jan Brandin
- Department
of Built Environment and Energy Technology, Linnæus University, 351 95 Växjö, Sweden
| | - Anders Holmen
- Department
of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim, Norway
| | - Hilde J. Venvik
- Department
of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim, Norway
| | - R. Myrstad
- SINTEF Materials and Chemistry, NO-7465 Trondheim, Norway
| | - Edd A. Blekkan
- Department
of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, 7491 Trondheim, Norway
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Anton J, Nebel J, Song H, Froese C, Weide P, Ruland H, Muhler M, Kaluza S. The effect of sodium on the structure–activity relationships of cobalt-modified Cu/ZnO/Al2O3 catalysts applied in the hydrogenation of carbon monoxide to higher alcohols. J Catal 2016. [DOI: 10.1016/j.jcat.2015.12.016] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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Effects of Zr and K Promoters on Precipitated Iron-Based Catalysts for Fischer–Tropsch Synthesis. Catal Letters 2011. [DOI: 10.1007/s10562-011-0739-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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4
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Chopra IS, Chaudhuri S, Veyan JF, Chabal YJ. Turning aluminium into a noble-metal-like catalyst for low-temperature activation of molecular hydrogen. NATURE MATERIALS 2011; 10:884-889. [PMID: 21946610 DOI: 10.1038/nmat3123] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 09/18/2011] [Indexed: 05/31/2023]
Abstract
Activation of molecular hydrogen is the first step in producing many important industrial chemicals that have so far required expensive noble-metal catalysts and thermal activation. We demonstrate here that aluminium doped with very small amounts of titanium can activate molecular hydrogen at temperatures as low as 90 K. Using an approach that uses CO as a probe molecule, we identify the atomistic arrangement of the catalytically active sites containing Ti on Al(111) surfaces, combining infrared reflection-absorption spectroscopy and first-principles modelling. CO molecules, selectively adsorbed on catalytically active sites, form a complex with activated hydrogen that is removed at remarkably low temperatures (115 K; possibly as a molecule). These results provide the first direct evidence that Ti-doped Al can carry out the essential first step of molecular hydrogen activation under nearly barrierless conditions, thereby challenging the monopoly of noble metals in hydrogen activation.
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Affiliation(s)
- Irinder S Chopra
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, USA
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5
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Hahn C, Shan J, Groot IM, Kleyn AW, Juurlink LB. Selective poisoning of active sites for D2 dissociation on platinum. Catal Today 2010. [DOI: 10.1016/j.cattod.2009.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Zhang C, Zhao G, Liu K, Yang Y, Xiang H, Li Y. Adsorption and reaction of CO and hydrogen on iron-based Fischer–Tropsch synthesis catalysts. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2010.05.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Balonek CM, Lillebø AH, Rane S, Rytter E, Schmidt LD, Holmen A. Effect of Alkali Metal Impurities on Co–Re Catalysts for Fischer–Tropsch Synthesis from Biomass-Derived Syngas. Catal Letters 2010. [DOI: 10.1007/s10562-010-0366-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Groot IMN, Juanes-Marcos JC, Olsen RA, Kroes GJ. A theoretical study of H2 dissociation on (3×3)R30°CO/Ru(0001). J Chem Phys 2010; 132:144704. [DOI: 10.1063/1.3378278] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- I M N Groot
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
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Ueta H, Groot IMN, Gleeson MA, Stolte S, McBane GC, Juurlink LBF, Kleyn AW. CO Blocking of D2Dissociative Adsorption on Ru(0001). Chemphyschem 2008; 9:2372-8. [DOI: 10.1002/cphc.200800294] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Zhang Z, Zhang Y, Fu Q, Zhang H, Yao Y, Ma T, Tan D, Xue Q, Bao X. Modulation of surface reactivity via electron confinement in metal quantum well films: O2 adsorption on Pb∕Si(111). J Chem Phys 2008; 129:014704. [DOI: 10.1063/1.2919992] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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11
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Politano A, Agostino RG, Formoso V, Chiarello G. Short-Range Interactions in Na Coadsorption with CO and O on Ni(111). Chemphyschem 2008; 9:1189-94. [DOI: 10.1002/cphc.200800073] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Bishop SR, Tran NL, Poon GC, Kummel AC. Dynamics of analyte binding onto a metallophthalocyanine: NO∕FePc. J Chem Phys 2007; 127:214702. [DOI: 10.1063/1.2804870] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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13
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Stolbov S, Rahman TS. Alkali-induced enhancement of surface electronic polarizibility. PHYSICAL REVIEW LETTERS 2006; 96:186801. [PMID: 16712388 DOI: 10.1103/physrevlett.96.186801] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2005] [Indexed: 05/09/2023]
Abstract
From results of ab initio electronic structure calculations based on density functional theory for a set of prototype systems, we find alkali adsorbates to cause a dramatic enhancement of the electronic polarizability of the metal surface extending it several angstroms into the vacuum. This phenomenon is traceable to an unusual feature induced in the surface potential on alkali adsorption. The effect appears to be general, as we find it to be present on metals as varied as Pd and Cu, and helps explain the observed substantial decrease in the vibrational frequency of molecules when coadsorbed with alkalis on metal surfaces. Specifically, for two dissimilar molecules CO and O(2), we trace the softening of the frequencies of their stretching mode when coadsorbed with K on Pd(111) to the enhanced electronic polarizability.
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Affiliation(s)
- Sergey Stolbov
- Department of Physics, Cardwell Hall, Kansas State University, Manhattan, Kansas 66506, USA
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Benitez JI, Castillo S, Poulain E, Bertin V. Ab initio multireference configuration-interaction study of hydrogen molecule activation by Cs-promoted Pt clusters. J Chem Phys 2006; 124:024703. [PMID: 16422622 DOI: 10.1063/1.2141954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The adsorption of the H2 molecule on CsnPt(5-n) bcc (111) clusters for Cs/Pt rates of 20%, 40%, and 80% is studied using ab initio multiconfigurational self-consistent field plus multireference configuration-interaction variational and perturbative calculations. The H2 interaction with the clusters is studied in ground and excited states with geometry optimization, where the hydrogen adsorption takes place by a Pt atom. These calculations are compared with those of H2 adsorption on Pt4. The most stable configurations of Cs/Pt4 and Cs2Pt3 clusters (Cs/Pt rates of 20% and 40%) are a doublet and a closed-shell singlet, respectively. Both clusters capture and activate the hydrogen molecule and their behaviors resemble Pt4. The H2 capture distances are, respectively, similar and smaller than Pt4 capture distances, while the H-H bond dissociation distances are similar and bigger than those of Pt4; however, none of them presents activation barriers. The most stable Cs4Pt cluster (Cs/Pt rate of 80%) is also a closed-shell singlet; it also captures and activates the hydrogen molecule and shows a different behavior as compared with Cs/Pt4, Cs2Pt3, and Pt4 clusters. The capture distance is quite smaller and is obtained after surmounting an activation barrier. For all clusters studied here, no hydrogen absorption was observed, only the adsorption of H2.
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Affiliation(s)
- J I Benitez
- Area de Fisica Atómica y Molecular Aplicada, CBI, UAM-Azcapotzalco, Avonida San Pablo No. 180, Colonia Reynosa-Tamaulipas, Azcapotzalco, Mexico Distrito Federal, 02200 Mexico
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15
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Kondo T, Sasaki T, Yamamoto S. Dissociative chemisorption of CH4 on a cesiated Pt(111) surface studied by supersonic molecular beam scattering techniques. J Chem Phys 2002. [DOI: 10.1063/1.1467051] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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16
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Liu ZP, Hu P. An insight into alkali promotion: a density functional theory study of CO dissociation on K/Rh(111). J Am Chem Soc 2001; 123:12596-604. [PMID: 11741424 DOI: 10.1021/ja011446y] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The important role of alkali additives in heterogeneous catalysis is, to a large extent, related to the high promotion effect they have on many fundamental reactions. The wide application of alkali additives in industry does not, however, reflect a thorough understanding of the mechanism of their promotional abilities. To investigate the physical origin of the alkali promotion effect, we have studied CO dissociation on clean Rh(111) and K-covered Rh(111) surfaces using density functional theory. By varying the position of potassium atoms relative to a dissociating CO, we have mapped out the importance of different K effects on the CO dissociation reactions. The K-induced changes in the reaction pathways and reaction barriers have been determined; in particular, a large reduction of the CO dissociation barrier has been identified. A thorough analysis of this promotion effect allows us to rationalize both the electronic and the geometrical factors that govern alkali promotion effect: (i) The extent of barrier reductions depends strongly on how close K is to the dissociating CO. (ii) Direct K-O bonding that is in a very short range plays a crucial role in reducing the barrier. (iii) K can have a rather long-range effect on the TS structure, which could reduce slightly the barriers.
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Affiliation(s)
- Z P Liu
- School of Chemistry, The Queen's University of Belfast, Belfast BT9 5AG, UK
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Hammer B, Nørskov J. Theoretical surface science and catalysis—calculations and concepts. ADVANCES IN CATALYSIS 2000. [DOI: 10.1016/s0360-0564(02)45013-4] [Citation(s) in RCA: 1242] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Namiki A, Hayashi H, Ukai Y, Geuzebroek FH. Direct‐inelastic scattering of chlorine molecules from cesiated Si(100). J Chem Phys 1995. [DOI: 10.1063/1.468787] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hoshino K, Naganuma T, Yamada Y, Watanabe K, Nakajima A, Kaya K. Ionization potentials of cobalt–sodium bimetallic clusters (ConNam). J Chem Phys 1992. [DOI: 10.1063/1.462961] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Winkler A, Rendulic KD. Sticking of molecular hydrogen on simple, noble and transition metal surfaces. INT REV PHYS CHEM 1992. [DOI: 10.1080/01442359209353267] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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