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Chakarova KK, Mihaylov MY, Karapenchev BS, Koleva IZ, Vayssilov GN, Aleksandrov HA, Hadjiivanov KI. N 2 as an Efficient IR Probe Molecule for the Investigation of Ceria-Containing Materials. Molecules 2024; 29:3608. [PMID: 39125011 PMCID: PMC11314509 DOI: 10.3390/molecules29153608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024] Open
Abstract
Ceria and ceria-based catalysts are very important in redox and acid-base catalysis. Nanoceria have also been found to be important in biomedical applications. To design efficient materials, it is necessary to thoroughly understand the surface chemistry of ceria, and one of the techniques that provides such information about the surface is the vibrational spectroscopy of probe molecules. Although the most commonly used probe is CO, it has some disadvantages when applied to ceria and ceria-based catalysts. CO can easily reduce the material, forming carbonate-like species, and can be disproportionate, thus modifying the surface. Here, we offer a pioneering study of the adsorption of 15N2 at 100 K, demonstrating that dinitrogen can be more advantageous than CO when studying ceria-based materials. As an inert gas, N2 is not able to oxidize or reduce cerium cations and does not form any surface anionic species able to modify the surface. It is infrared and transparent, and thus there is no need to subtract the gas phase spectrum, something that often increases the noise level. Being a weaker base than CO, N2 has a negligible induction effect. By using stoichiometric nano-shaped ceria samples, we concluded that 15N2 can distinguish between surface Ce4+ sites on different, low index planes; with cations on the {110} facets and on some of the edges, Ce4+-15N2 species with IR bands at 2258-2257 cm-1 are formed. Bridging species, where one of the N atoms from the molecule interacts with two Ce4+ cations, are formed on the {100} facets (2253-2252 cm-1), while the interaction with the {111} facets is very weak and does not lead to the formation of measurable amounts of complexes. All species are formed by electrostatic interaction and disappear during evacuation at 100 K. In addition, N2 provides more accurate information than CO on the acidity of the different OH groups because it does not change the binding mode of the hydroxyls.
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Affiliation(s)
- Kristina K. Chakarova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.S.K.); (H.A.A.); (K.I.H.)
| | - Mihail Y. Mihaylov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.S.K.); (H.A.A.); (K.I.H.)
| | - Bayan S. Karapenchev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.S.K.); (H.A.A.); (K.I.H.)
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria; (I.Z.K.); (G.N.V.)
| | - Iskra Z. Koleva
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria; (I.Z.K.); (G.N.V.)
| | - Georgi N. Vayssilov
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria; (I.Z.K.); (G.N.V.)
| | - Hristiyan A. Aleksandrov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.S.K.); (H.A.A.); (K.I.H.)
- Faculty of Chemistry and Pharmacy, University of Sofia, 1126 Sofia, Bulgaria; (I.Z.K.); (G.N.V.)
| | - Konstantin I. Hadjiivanov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.S.K.); (H.A.A.); (K.I.H.)
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2
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Moxon S, Symington AR, Tse JS, Flitcroft JM, Skelton JM, Gillie LJ, Cooke DJ, Parker SC, Molinari M. Composition-dependent morphologies of CeO 2 nanoparticles in the presence of Co-adsorbed H 2O and CO 2: a density functional theory study. NANOSCALE 2024; 16:11232-11249. [PMID: 38779821 DOI: 10.1039/d4nr01296h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Catalytic activity is affected by surface morphology, and specific surfaces display greater activity than others. A key challenge is to define synthetic strategies to enhance the expression of more active surfaces and to maintain their stability during the lifespan of the catalyst. In this work, we outline an ab initio approach, based on density functional theory, to predict surface composition and particle morphology as a function of environmental conditions, and we apply this to CeO2 nanoparticles in the presence of co-adsorbed H2O and CO2 as an industrially relevant test case. We find that dissociative adsorption of both molecules is generally the most favourable, and that the presence of H2O can stabilise co-adsorbed CO2. We show that changes in adsorption strength with temperature and adsorbate partial pressure lead to significant changes in surface stability, and in particular that co-adsorption of H2O and CO2 stabilizes the {100} and {110} surfaces over the {111} surface. Based on the changes in surface free energy induced by the adsorbed species, we predict that cuboidal nanoparticles are favoured in the presence of co-adsorbed H2O and CO2, suggesting that cuboidal particles should experience a lower thermodynamic driving force to reconstruct and thus be more stable as catalysts for processes involving these species.
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Affiliation(s)
- Samuel Moxon
- Department of Physical and Life Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Adam R Symington
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Joshua S Tse
- Department of Physical and Life Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Joseph M Flitcroft
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Jonathan M Skelton
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Lisa J Gillie
- Department of Physical and Life Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - David J Cooke
- Department of Physical and Life Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Stephen C Parker
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Marco Molinari
- Department of Physical and Life Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
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3
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Yang Z, Ji D, Li Z, He Z, Hu Y, Yin J, Hou Y, Xi P, Yan CH. Ceo 2 /Cus Nanoplates Electroreduce Co 2 to Ethanol with Stabilized Cu + Species. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303099. [PMID: 37269214 DOI: 10.1002/smll.202303099] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/22/2023] [Indexed: 06/04/2023]
Abstract
Copper-based electrocatalysts effectively produce multicarbon (C2+ ) compounds during the electrochemical CO2 reduction (CO2 RR). However, big challenges still remain because of the chemically unstable active sites. Here, cerium is used as a self-sacrificing agent to stabilize the Cu+ of CuS, due to the facile Ce3+ /Ce4+ redox. CeO2 -modified CuS nanoplates achieve high ethanol selectivity, with FE up to 54% and FEC2+ ≈ 75% in a flow cell. Moreover, in situ Raman spectroscopy and in situ Fourier-transform infrared spectroscopy indicate that the stable Cu+ species promote CC coupling step under CO2 RR. Density functional theory calculations further reveal that the stronger * CO adsorption and lower CC coupling energy, which is conducive to the selective generation of ethanol products. This work provides a facile strategy to convert CO2 into ethanol by retaining Cu+ species.
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Affiliation(s)
- Zi Yang
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Deguang Ji
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Zhi Li
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Zidong He
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yang Hu
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jie Yin
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yichao Hou
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Pinxian Xi
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou, 014030, China
| | - Chun-Hua Yan
- Stat Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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Komiyama M. Ce-based solid-phase catalysts for phosphate hydrolysis as new tools for next-generation nanoarchitectonics. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2250705. [PMID: 37701758 PMCID: PMC10494760 DOI: 10.1080/14686996.2023.2250705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 09/14/2023]
Abstract
This review comprehensively covers synthetic catalysts for the hydrolysis of biorelevant phosphates and pyrophosphates, which bridge between nanoarchitectonics and biology to construct their interdisciplinary hybrids. In the early 1980s, remarkable catalytic activity of Ce4+ ion for phosphate hydrolysis was found. More recently, this finding has been extended to Ce-based solid catalysts (CeO2 and Ce-based metal-organic frameworks (MOFs)), which are directly compatible with nanoarchitectonics. Monoesters and triesters of phosphates, as well as pyrophosphates, were effectively cleaved by these catalysts. With the use of either CeO2 nanoparticles or elegantly designed Ce-based MOF, highly stable phosphodiester linkages were also hydrolyzed. On the surfaces of all these solid catalysts, Ce4+ and Ce3+ coexist and cooperate for the catalysis. The Ce4+ activates phosphate substrates as a strong acid, whereas the Ce3+ provides metal-bound hydroxide as an eminent nucleophile. Applications of these Ce-based catalysts to practical purposes are also discussed.
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Affiliation(s)
- Makoto Komiyama
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
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5
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Yu H, Liu J, Wan Q, Zhao G, Gao E, Wang J, Xu B, Zhao G, Fan X. Synergistic effect of acid-base and redox properties of nano Au/CeO2-cube on selective hydrogenation of nitrobenzene to aniline. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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6
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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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7
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Tovar-Rodriguez J, Fratini E, Baglioni P, Ferrari C, de los Reyes-Heredia JA, Ramírez-Hernández Y, Galindo-Esquivel IR. Ultrasound and Microwave-Assisted Synthesis of Hexagonally Ordered Ce-Promoted Mesoporous Silica as Ni Supports for Ethanol Steam Reforming. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:997. [PMID: 36985891 PMCID: PMC10053107 DOI: 10.3390/nano13060997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Solvothermal synthesis of mesoporous materials based on amphiphilic molecules as structure-directing agents can be enhanced using non-conventional technologies for stirring and thermal activation. Here, we disclose a green synthesis approach for the preparation of cerium-modified hexagonally ordered silica sieves. Ultrasound micromixing enabled us to obtain well-dispersed Ce in the self-assembled silica network and yielded ordered materials with high cerium content (Ce/Si molar ratio = 0.08). Microwave dielectric heating, applied by an innovative open-end coaxial antenna, was used to reduce the overall hydrothermal synthesis time and to improve the surface area and textural properties. These mesoporous materials were used as a Ni catalyst support (10 wt.% metal loading) for the ethanol steam reforming reaction. The new catalysts featured complete ethanol conversion, high H2 selectivity (65%) and better stability, compared to the same catalyst prepared with magnetic stirring and conventional heating. The Ce-promoted silica sieves offered a suitable support for the controlled growth of nanocarbon that does not result in catalyst deactivation or poisoning after 6 h on stream.
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Affiliation(s)
- Jorge Tovar-Rodriguez
- Department of Chemistry “Ugo Schiff” and Center for Colloid and Surface Science (CSGI), University of Florence, Via della Lastruccia 3, 50019 Florence, Italy
| | - Emiliano Fratini
- Department of Chemistry “Ugo Schiff” and Center for Colloid and Surface Science (CSGI), University of Florence, Via della Lastruccia 3, 50019 Florence, Italy
| | - Piero Baglioni
- Department of Chemistry “Ugo Schiff” and Center for Colloid and Surface Science (CSGI), University of Florence, Via della Lastruccia 3, 50019 Florence, Italy
| | - Carlo Ferrari
- National Institute of Optics (INO–UOS Pisa), National Council of Research (CNR), Via Giuseppe Moruzzi 1, 56124 Pisa, Italy
| | - José Antonio de los Reyes-Heredia
- Process Engineering and Hydraulics Department, Metropolitan Autonomous University, UAM, Av. San Rafael Atlixco 186, Ciudad de México 09340, Mexico
| | - Yonatan Ramírez-Hernández
- Chemical Engineering Department, University of Guanajuato, Noria Alta S/N, Noria Alta, Guanajuato 36050, Mexico
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8
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Insights from a Bibliometrics-Based Analysis of Publishing and Research Trends on Cerium Oxide from 1990 to 2020. Int J Mol Sci 2023; 24:ijms24032048. [PMID: 36768372 PMCID: PMC9916443 DOI: 10.3390/ijms24032048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 01/21/2023] Open
Abstract
The purpose of this study is to evaluate the literature for research trends on cerium oxide from 1990 to 2020 and identify gaps in knowledge in the emerging application(s) of CeONP. Bibliometric methods were used to identify themes in database searches from PubMed, Scopus and Web of Science Core Collection using SWIFT-Review, VOSviewer and SciMAT software programs. A systematic review was completed on published cerium oxide literature extracted from the Scopus database (n = 17,115), identifying themes relevant to its industrial, environmental and biomedical applications. A total of 172 publications were included in the systematic analysis and categorized into four time periods with research themes identified; "doping additives" (n = 5, 1990-1997), "catalysts" (n = 32, 1998-2005), "reactive oxygen species" (n = 66, 2006-2013) and "pathology" (n = 69, 2014-2020). China and the USA showed the highest number of citations and publications for cerium oxide research from 1990 to 2020. Longitudinal analysis showed CeONP has been extensively used for various applications due to its catalytic properties. In conclusion, this study showed the trend in research in CeONP over the past three decades with advancements in nanoparticle engineering like doping, and more recently surface modification or functionalization to further enhanced its antioxidant abilities. As a result of recent nanoparticle engineering developments, research into CeONP biological effects have highlighted its therapeutic potential for a range of human pathologies such as Alzheimer's disease. Whilst research over the past three decades show the versatility of cerium oxide in industrial and environmental applications, there are still research opportunities to investigate the potential beneficial effects of CeONP in its application(s) on human health.
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9
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Gnanamani MK, Rajabathar JR. Defects chemistry and catalysis of Indium oxide. METAL OXIDE DEFECTS 2023:665-690. [DOI: 10.1016/b978-0-323-85588-4.00004-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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10
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Kulthananat T, Kim-Lohsoontorn P, Seeharaj P. Ultrasonically assisted surface modified CeO 2 nanospindle catalysts for conversion of CO 2 and methanol to DMC. ULTRASONICS SONOCHEMISTRY 2022; 90:106164. [PMID: 36137468 PMCID: PMC9494248 DOI: 10.1016/j.ultsonch.2022.106164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/02/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
This study developed a facile and effective approach to engineer the surface properties of cerium oxide (CeO2) nanospindle catalysts for the direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol. CeO2 nanospindles were first prepared by a simple precipitation method followed by wet chemical redox etching with sodium borohydride (NaBH4) under high intensity ultrasonication (ultrasonic horn, 20 kHz, 150 W/cm2). The ultrasonically assisted surface modification of the CeO2 nanospindles in NaBH4 led to particle collisions and surface reduction that resulted in an increase in the number of surface-active sites of exposed Ce3+ and oxygen vacancies. The surface modified CeO2 nanospindles showed an improvement of catalytic activity for DMC formation, yielding 17.90 mmol·gcat-1 with 100 % DMC selectivity. This study offers a simple and effective method to modify a CeO2 surface, and it can further be applied for other chemical activities.
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Affiliation(s)
- Tachatad Kulthananat
- Advanced Materials Research Unit, Department of Chemistry, School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Pattaraporn Kim-Lohsoontorn
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Panpailin Seeharaj
- Advanced Materials Research Unit, Department of Chemistry, School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
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11
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Hong Phuong P, Cam Anh H, Tri N, Phung Anh N, Cam Loc L. Effect of Support on Stability and Coke Resistance of Ni-Based Catalyst in Combined Steam and CO 2 Reforming of CH 4. ACS OMEGA 2022; 7:20092-20103. [PMID: 35721961 PMCID: PMC9202042 DOI: 10.1021/acsomega.2c01931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Ni-based catalysts dispersed on different supports (MgO-α-Al2O3, CeO2, SBA-15, and MgO-SBA-15) were prepared by the impregnation method. Characteristics of the catalysts, including specific surface areas (N2 physisorption), crystalline phase compositions (powder X-ray diffraction, Raman spectroscopy), reducibility (hydrogen temperature-programmed reduction, H2-TPR), and morphology (scanning electron microscopy (SEM) and transmission electron microscopy, TEM)) were investigated. The activity and stability of the catalysts were tested for the combined steam and CO2 reforming of methane at 700 °C in a microflow system. The results show that the catalysts exhibit high activity in the BRM reaction. At 700 °C, the conversion of CH4 and CO2 reached 86-99% and 67-80%, respectively, in which the Ni/Mg-SBA catalyst is the best with conversions of CH4 and CO2 reaching 99% and 80%. Coke accumulation on the surface of the catalysts for 100 h time on stream (TOS) was evaluated by the temperature-programmed oxidation (TPO) technique. The major cause of the catalytic deactivation was elucidated by combining the determination of the amount and type of deposited coke with the changes in the physicochemical properties of the catalysts after the long-term reaction. Almost complete loss of activity was observed on Ni/Mg-Al catalyst after 100 h TOS, while the activity drop was slow on the Ni/Mg-SBA sample, about 15-20% of the total value. Otherwise, the Ni/CeO2 and Ni/SBA catalysts firmly retained their stable activity for 100 h TOS due to the minimal carbon deposition and stability of these catalysts' structure. The highly considerable formation of inert Cγ carbon and sintering over Ni catalyst supported on MgO-α-Al2O3 were responsible for the lower stability of this catalyst compared to those supported on CeO2 and SBA-15.
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Affiliation(s)
- Phan Hong Phuong
- Faculty
of Chemical Engineering, Ho Chi Minh City
University of Technology (HCMUT), 268 Ly Thuong Kiet Street, Ho Chi Minh City 701000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 701000, Vietnam
| | - Ha Cam Anh
- Faculty
of Chemical Engineering, Ho Chi Minh City
University of Technology (HCMUT), 268 Ly Thuong Kiet Street, Ho Chi Minh City 701000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 701000, Vietnam
| | - Nguyen Tri
- Institute
of Chemical Technology−Vietnam Academy of Science and Technology, 01A TL29 Street, Thanh Loc Ward,
District 12, Ho Chi Minh City 701000, Vietnam
| | - Nguyen Phung Anh
- Institute
of Chemical Technology−Vietnam Academy of Science and Technology, 01A TL29 Street, Thanh Loc Ward,
District 12, Ho Chi Minh City 701000, Vietnam
| | - Luu Cam Loc
- Faculty
of Chemical Engineering, Ho Chi Minh City
University of Technology (HCMUT), 268 Ly Thuong Kiet Street, Ho Chi Minh City 701000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 701000, Vietnam
- Institute
of Chemical Technology−Vietnam Academy of Science and Technology, 01A TL29 Street, Thanh Loc Ward,
District 12, Ho Chi Minh City 701000, Vietnam
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12
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Woźniak P, Małecka MA, Kraszkiewicz P, Miśta W, Bezkrovnyi O, Chinchilla L, Trasobares S. Confinement of nano-gold in 3D hierarchically structured gadolinium-doped ceria mesocrystal: synergistic effect of chemical composition and structural hierarchy in CO and propane oxidation. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01214f] [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
Gadolinium-doped ceria hierarchical gold catalyst shows four-fold TOF increase compared to undoped non-hierarchical system, proving the synergistic effect of doping and structural hierarchy in propane oxidation.
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Affiliation(s)
- Piotr Woźniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Małgorzata A. Małecka
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Piotr Kraszkiewicz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Włodzimierz Miśta
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Oleksii Bezkrovnyi
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - Lidia Chinchilla
- Departamento de Ciencia de los Materiales e Ing. Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Universitario de Puerto Real, 11510, Cádiz, Spain
| | - Susana Trasobares
- Departamento de Ciencia de los Materiales e Ing. Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Universitario de Puerto Real, 11510, Cádiz, Spain
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13
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Wang YH, Yang Q, Walsh PJ, Schelter EJ. Light-mediated aerobic oxidation of C(sp 3)–H bonds by a Ce( iv) hexachloride complex. Org Chem Front 2022. [DOI: 10.1039/d2qo00362g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A photochemical C(sp3)–H oxygenation of arene and alkane substrates (including methane) catalyzed by [NEt4]2[CeIVCl6] under mild conditions (1 atm, 25 °C) is described.
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Affiliation(s)
- Yu-Heng Wang
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Qiaomu Yang
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Patrick J. Walsh
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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14
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Neuhaus K, Schmidt C, Fischer L, Meulenberg WA, Ran K, Mayer J, Baumann S. Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:1380-1391. [PMID: 34987951 PMCID: PMC8685560 DOI: 10.3762/bjnano.12.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
In this study, a dual phase composite (CSO-FC2O) consisting of 60 vol % Ce0.8Sm0.2O1.9 as oxygen-conductive phase and 40 vol % FeCo2O4 as electron-conductive phase was synthesized. TEM measurements showed a relatively pure dual-phase material with only minor amounts of a tertiary (Sm,Ce)(Fe,Co)O3 perovskite phase and isolated residues of a rock salt phase at the grain boundaries. The obtained material was used as a model to demonstrate that a combination of polarization relaxation measurements and Kelvin probe force microscopy (KPFM)-based mapping of the Volta potential before and after the end of polarization can be used to determine the chemical diffusion coefficient of the ceria component of the composite. The KPFM measurements were performed at room temperature and show diffusion coefficients in the range of 3 × 10-13 cm2·s-1, which is comparable to values measured for single-phase Gd-doped ceria thin films using the same method.
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Affiliation(s)
- Kerstin Neuhaus
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research 12, Helmholtz-Institute Münster: Ionics in Energy Storage, Corrensstr. 46, 48149 Münster, Germany
| | - Christina Schmidt
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research 12, Helmholtz-Institute Münster: Ionics in Energy Storage, Corrensstr. 46, 48149 Münster, Germany
| | - Liudmila Fischer
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Wilhelm-Johnen-Straße, 52452 Jülich, Germany
- Faculty of Science and Technology, Inorganic Membranes, University of Twente, 7500 AE Enschede, Netherlands
| | - Wilhelm Albert Meulenberg
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Wilhelm-Johnen-Straße, 52452 Jülich, Germany
- Faculty of Science and Technology, Inorganic Membranes, University of Twente, 7500 AE Enschede, Netherlands
| | - Ke Ran
- Central Facility for Electron Microscopy GFE, RWTH Aachen University, 52074 Aachen, Germany
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons ER-C, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Joachim Mayer
- Central Facility for Electron Microscopy GFE, RWTH Aachen University, 52074 Aachen, Germany
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons ER-C, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Stefan Baumann
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Wilhelm-Johnen-Straße, 52452 Jülich, Germany
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15
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Yang J, Yigit N, Möller J, Rupprechter G. Co 3 O 4 -CeO 2 Nanocomposites for Low-Temperature CO Oxidation. Chemistry 2021; 27:16947-16955. [PMID: 33913575 PMCID: PMC9292333 DOI: 10.1002/chem.202100927] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Indexed: 11/10/2022]
Abstract
In an effort to combine the favorable catalytic properties of Co3 O4 and CeO2 , nanocomposites with different phase distribution and Co3 O4 loading were prepared and employed for CO oxidation. Synthesizing Co3 O4 -modified CeO2 via three different sol-gel based routes, each with 10.4 wt % Co3 O4 loading, yielded three different nanocomposite morphologies: CeO2 -supported Co3 O4 layers, intermixed oxides, and homogeneously dispersed Co. The reactivity of the resulting surface oxygen species towards CO were examined by temperature programmed reduction (CO-TPR) and flow reactor kinetic tests. The first morphology exhibited the best performance due to its active Co3 O4 surface layer, reducing the light-off temperature of CeO2 by about 200 °C. In contrast, intermixed oxides and Co-doped CeO2 suffered from lower dispersion and organic residues, respectively. The performance of Co3 O4 -CeO2 nanocomposites was optimized by varying the Co3 O4 loading, characterized by X-ray diffraction (XRD) and N2 sorption (BET). The 16-65 wt % Co3 O4 -CeO2 catalysts approached the conversion of 1 wt % Pt/CeO2 , rendering them interesting candidates for low-temperature CO oxidation.
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Affiliation(s)
- Jingxia Yang
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC/01, 1060-, Vienna, Austria.,College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Rd 333, Songjiang, Shanghai, (P.R., China
| | - Nevzat Yigit
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC/01, 1060-, Vienna, Austria
| | - Jury Möller
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC/01, 1060-, Vienna, Austria
| | - Günther Rupprechter
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/BC/01, 1060-, Vienna, Austria
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16
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Organic compound modification of CeO2 and 2-cyanopyridine hybrid catalyst in carbonate synthesis from CO2 and alcohols. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Wang X, Li M, Wu Z. In situ spectroscopic insights into the redox and acid-base properties of ceria catalysts. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63806-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Jiang S, Ji N, Diao X, Li H, Rong Y, Lei Y, Yu Z. Vacancy Engineering in Transition Metal Sulfide and Oxide Catalysts for Hydrodeoxygenation of Lignin-Derived Oxygenates. CHEMSUSCHEM 2021; 14:4377-4396. [PMID: 34342394 DOI: 10.1002/cssc.202101362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/01/2021] [Indexed: 06/13/2023]
Abstract
The catalytic hydrodeoxygenation (HDO) of lignin has long been a hot research topic and vacancy engineering is a new means to develop more efficient catalysts for this process. Oxygen vacancies and sulfur vacancies are both widely used in HDO. Based on the current research status of vacancies in the field of lignin-derived oxygenates, this Minireview discusses in detail design methods for vacancy engineering, including surface activation, synergistic modification, and morphology control. Moreover, it is clarified that in the HDO reaction, vacancies can act as acidic sites, promote substrate adsorption, and regulate product distribution, whereas for the catalysts, vacancies can enhance stability and reducibility, improve metal dispersion, and improve redox capacity. Finally, the characterization of vacancies is summarized and strategies are proposed to address the current deficiencies in this field.
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Affiliation(s)
- Sinan Jiang
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Na Ji
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Xinyong Diao
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Hanyang Li
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Yue Rong
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Yaxuan Lei
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Zhihao Yu
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
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19
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Tamura M, Doi Y, Li Y, Nakagawa Y, Tomishige K. Effective Heterogeneous MoO
x
‐Modified CeO
2
Catalyst for Michael Addition of Dimethyl Malonate to 2‐Cyclohexen‐1‐one. ChemCatChem 2021. [DOI: 10.1002/cctc.202100682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masazumi Tamura
- Research Center for Artificial Photosynthesis Osaka City University 3-3-138, Sugimoto Sumiyoshi-ku, Osaka 558-8585 Japan
| | - Yamato Doi
- Department of Applied Chemistry School of Engineering Tohoku University 6-6-07, Aoba, Aramaki Aoba-ku, Sendai 980-8579 Japan
| | - Yingai Li
- Department of Applied Chemistry School of Engineering Tohoku University 6-6-07, Aoba, Aramaki Aoba-ku, Sendai 980-8579 Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry School of Engineering Tohoku University 6-6-07, Aoba, Aramaki Aoba-ku, Sendai 980-8579 Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry School of Engineering Tohoku University 6-6-07, Aoba, Aramaki Aoba-ku, Sendai 980-8579 Japan
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20
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Huang X, Zhang K, Peng B, Wang G, Muhler M, Wang F. Ceria-Based Materials for Thermocatalytic and Photocatalytic Organic Synthesis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02443] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiubing Huang
- Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Beijing 10083, PR China
| | - Kaiyue Zhang
- Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Beijing 10083, PR China
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Nordrhein-Westfalen, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34−36, 45470 Mülheim an der Ruhr, Nordrhein-Westfalen, Germany
| | - Ge Wang
- Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Beijing 10083, PR China
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Nordrhein-Westfalen, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34−36, 45470 Mülheim an der Ruhr, Nordrhein-Westfalen, Germany
| | - Feng Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China
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21
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Bhasker-Ranganath S, Rahman MS, Zhao C, Calaza F, Wu Z, Xu Y. Elucidating the Mechanism of Ambient-Temperature Aldol Condensation of Acetaldehyde on Ceria. ACS Catal 2021; 11:8621-8634. [PMID: 34306815 PMCID: PMC8294007 DOI: 10.1021/acscatal.1c01216] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/16/2021] [Indexed: 12/18/2022]
Abstract
Using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and density functional theory (DFT) calculations, we conclusively demonstrate that acetaldehyde (AcH) undergoes aldol condensation when flown over ceria octahedral nanoparticles, and the reaction is desorption-limited at ambient temperature. trans-Crotonaldehyde (CrH) is the predominant product whose coverage builds up on the catalyst with time on stream. The proposed mechanism on CeO2(111) proceeds via AcH enolization (i.e., α C-H bond scission), C-C coupling, and further enolization and dehydroxylation of the aldol adduct, 3-hydroxybutanal, to yield trans-CrH. The mechanism with its DFT-calculated parameters is consistent with reactivity at ambient temperature and with the kinetic behavior of the aldol condensation of AcH reported on other oxides. The slightly less stable cis-CrH can be produced by the same mechanism depending on how the enolate and AcH are positioned with respect to each other in C-C coupling. All vibrational modes in DRIFTS are identified with AcH or trans-CrH, except for a feature at 1620 cm-1 that is more intense relative to the other bands on the partially reduced ceria sample than on the oxidized sample. It is identified to be the C=C stretch mode of CH3CHOHCHCHO adsorbed on an oxygen vacancy. It constitutes a deep energy minimum, rendering oxygen vacancies an inactive site for CrH formation under given conditions.
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Affiliation(s)
- Suman Bhasker-Ranganath
- Cain
Department of Chemical Engineering, Louisiana
State University, Baton Rouge, Louisiana 70803, United States
| | - Md. Saeedur Rahman
- Cain
Department of Chemical Engineering, Louisiana
State University, Baton Rouge, Louisiana 70803, United States
| | - Chuanlin Zhao
- Cain
Department of Chemical Engineering, Louisiana
State University, Baton Rouge, Louisiana 70803, United States
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Florencia Calaza
- Instituto
de Desarrollo Tecnoloǵico para la Industria Química
(INTEC), CONICET-UNL, Santa Fe 3000, Argentina
| | - Zili Wu
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Ye Xu
- Cain
Department of Chemical Engineering, Louisiana
State University, Baton Rouge, Louisiana 70803, United States
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22
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Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy. Catalysts 2021. [DOI: 10.3390/catal11060731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We investigated the performance of nickel/samarium-doped ceria (Ni/SDC) nanocatalysts on the catalytic partial oxidation of methane (CPOM). Studies of temperature-programmed surface reaction and reduction reveal that catalytic activity is determined by a synergistic effect produced by Ni metals and metal-support interaction. Catalytic activity was more dependent on the Ni content below 600 °C, while there is not much difference for all catalysts at high temperatures. The catalyst exhibiting high activities toward syngas production (i.e., a CH4 conversion >90% at 700 °C) requires a medium Ni-SDC interaction with an Sm/Ce ratio of about 1/9 to 2/8. This is accounted for by optimum oxygen vacancies and adequate ion diffusivity in the SDCs which, as reported, also display the highest ion conductivity for fuel cell applications.
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23
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Li Y, Li L, Sun W, Chen C, Luo S, Shen J, Jiang C, Jing F. Porous Silica Coated Ceria as a Switch in Tandem Oxidative Dehydrogenation and Dry Reforming of Ethane with CO
2. ChemCatChem 2021. [DOI: 10.1002/cctc.202100364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yingchun Li
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
| | - Linyi Li
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
| | - Wenjing Sun
- China-America Cancer Research Institute Key Laboratory for Medical Molecular Diagnostics of Guangdong Province Guangdong Medical University No.1 Xincheng Blvd Songshan Lake National High-tech Industrial Development Zone 523808 Dongguan P. R. China
| | - Congmei Chen
- Shenzhen Cloud Computing Center National Supercomputing Center in Shenzhen 1068(west) Xueyuan Avenue 518055 Shenzhen P. R. China
| | - Shizhong Luo
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
| | - Jun Shen
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
| | - Chengfa Jiang
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
| | - Fangli Jing
- School of Chemical Engineering Sichuan University No. 24 South Section 1 Yihuan Road 610065 Chengdu P. R. China
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24
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Chung CH, Tu FY, Chiu TA, Wu TT, Yu WY. Critical Roles of Surface Oxygen Vacancy in Heterogeneous Catalysis over Ceria-based Materials: A Selected Review. CHEM LETT 2021. [DOI: 10.1246/cl.200845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ching-Hsiu Chung
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, Taipei 10617, Taiwan
| | - Fang-Yi Tu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, Taipei 10617, Taiwan
| | - Te-An Chiu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, Taipei 10617, Taiwan
| | - Tung-Ta Wu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, Taipei 10617, Taiwan
| | - Wen-Yueh Yu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, Taipei 10617, Taiwan
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25
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Ning J, Truhlar DG. Spin-Orbit Coupling Changes the Identity of the Hyper-Open-Shell Ground State of Ce +, and the Bond Dissociation Energy of CeH + Proves to Be Challenging for Theory. J Chem Theory Comput 2021; 17:1421-1434. [PMID: 33576629 DOI: 10.1021/acs.jctc.0c01124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cerium (Ce) plays important roles in catalysis. Its position in the sixth period of the periodic table leads to spin-orbit coupling (SOC) and other open-shell effects that make the quantum mechanical calculation of cerium compounds challenging. In this work, we investigated the low-lying spin states of Ce+ and the bond energy of CeH+, both by multiconfigurational methods, in particular, SA-CASSCF, MC-PDFT, CASPT2, XMS-PDFT, and XMS-CASPT2, and by single-configurational methods, namely, Hartree-Fock theory and unrestricted Kohn-Sham density functional theory with 34 choices of the exchange-correlation functional. We found that only CASPT2, XMS-CASPT2, and SA-CASSCF (among the five multiconfigurational methods) and GAM, HCTH, SOGGA11, and OreLYP (among the 35 single-configuration methods) successfully predict that the SOC-free ground spin state of Ce+ is a doublet state, and CASPT2 and GAM give the most accurate multireference and single-reference calculations, respectively, of the excitation energy of the first SOC-free excited state for Ce+. We calculated that the ground doublet state of Ce+ is an intra-atomic hyper-open-shell state. We calculated the spin-orbit energy (ESO) of Ce+ by the five multiconfigurational methods and found that ESO calculated by CASPT2 is the closest to the experimental value. Taking advantage of the availability of an experimental D0 for CeH+ as a way to provide a unique test of theory, we showed that all the multiconfigurational methods overestimate D0 by at least 246 meV (5.7 kcal/mol), and only three functionals, namely, SOGGA, MN15, and GAM, have an error of D0 that is less than 200 meV (5 kcal/mol).
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Affiliation(s)
- Jiaxin Ning
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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26
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Chandra R, Tomar R. Organic Transformation Using Heterogeneous Catalysts. CURR ORG CHEM 2021. [DOI: 10.2174/138527282503210122143159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ramesh Chandra
- Drug Discovery & Development Laboratory Department of Chemistry, University of Delhi, Delhi-110007,India
| | - Ravi Tomar
- Department of Chemistry Shree Guru Gobind Singh Tricentenary University Gurugram, Haryana-122505,India
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27
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Jamalzade E, Kashkooli K, Griffin L, van Walsum GP, Schwartz TJ. Production of jet-fuel-range molecules from biomass-derived mixed acids. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00401d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed acids from open culture fermentation can be catalytically upgraded to long-chain species suitable for use in jet fuel applications.
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Affiliation(s)
- Elnaz Jamalzade
- Department of Chemical & Biomedical Engineering
- University of Maine
- Orono
- USA
- Department of Chemistry
| | - Koorosh Kashkooli
- Department of Chemical & Biomedical Engineering
- University of Maine
- Orono
- USA
- Forest Bioproducts Research Institute
| | - Liam Griffin
- Department of Chemical & Biomedical Engineering
- University of Maine
- Orono
- USA
- Forest Bioproducts Research Institute
| | - G. Peter van Walsum
- Department of Chemical & Biomedical Engineering
- University of Maine
- Orono
- USA
- Forest Bioproducts Research Institute
| | - Thomas J. Schwartz
- Department of Chemical & Biomedical Engineering
- University of Maine
- Orono
- USA
- Frontier Institute for Research in Sensor Technology
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28
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Afrin S, Bollini P. A transient kinetic analysis of the evolution of a reducible metal oxide towards catalyzing nonoxidative alkanol dehydrogenation. J Catal 2021. [DOI: 10.1016/j.jcat.2020.08.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Synthesis of MgO and MgO–CeO2 by co-precipitation for the catalytic conversion of acetone by aldol condensation. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01868-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Garnes-Portolés F, Rivero-Crespo MÁ, Leyva-Pérez A. Nanoceria as a recyclable catalyst/support for the cyanosilylation of ketones and alcohol oxidation in cascade. J Catal 2020. [DOI: 10.1016/j.jcat.2020.09.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Siddiqui S, Siddiqui ZN. Synthesis and catalytic evaluation of PVP-CeO 2/rGO as a highly efficient and recyclable heterogeneous catalyst for multicomponent reactions in water. NANOSCALE ADVANCES 2020; 2:4639-4651. [PMID: 36132914 PMCID: PMC9419207 DOI: 10.1039/d0na00491j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 06/24/2020] [Indexed: 05/24/2023]
Abstract
A highly efficient and eco-friendly route for the reduction of graphene oxide (GO) to reduced graphene oxide (rGO) was developed by using polyvinylpyrrolidone coated CeO2 NPs (PVP-CeO2) as a reducing and stabilizing agent. The resulting carbonaceous material, PVP-CeO2/rGO, was well characterized with different spectroscopic techniques such as Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), elemental mapping, Transmission Electron Microscopy (TEM), Raman spectroscopy, powder X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), X-ray Photoelectron Spectroscopy (XPS), and Thermal Gravimetric (TG) analyses. The material exhibited high catalytic potential towards multicomponent reactions for the synthesis of biologically relevant benzodiazepine derivatives in aqueous media. The efficiency of the material for the desired reaction was shown in the form of an excellent product yield (96-98%) and a very short reaction time period (7-10 min). The use of water as solvent and recyclability of the catalyst made the present protocol acceptable from a green perspective.
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Affiliation(s)
- Shaheen Siddiqui
- Department of Chemistry, Aligarh Muslim University Aligarh 202002 Uttar Pradesh India
| | - Zeba N Siddiqui
- Department of Chemistry, Aligarh Muslim University Aligarh 202002 Uttar Pradesh India
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32
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Álvarez-Bermúdez O, Torres-Suay A, Pérez-Pla FF, Landfester K, Muñoz-Espí R. Magnetically enhanced polymer-supported ceria nanocatalysts for the hydration of nitriles. NANOTECHNOLOGY 2020; 31:405604. [PMID: 32259810 DOI: 10.1088/1361-6528/ab8765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The heterogeneous catalysis of the hydration of nitriles to amides is a process of great industrial relevance in which cerium(IV) oxide (also referred to as ceria) has shown an outstanding catalytic performance. The use of non-supported ceria nanoparticles is related to difficulties in the purification of the product and the recovery and recyclability of the catalyst. Therefore, in this work, ceria nanoparticles are supported on a polymer matrix either by synthesizing polymer particles by so-called Pickering miniemulsions while using ceria nanoparticles as emulsion stabilizers or, as a comparison, by in-situ crystallization on preformed polymer particles. The former strategy presents significant advantages over the latter in terms of time and consumption of resources, and it facilitates an easier scale-up of the process. In both strategies, the incorporation of a magnetoresponsive core within the polymer matrix allows the recovery and the recycling of the catalyst by simple application of a magnetic field and offers an enhancement of the catalytic efficiency.
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Affiliation(s)
- Olaia Álvarez-Bermúdez
- Institute of Materials Science (ICMUV), University of Valencia, c/ Catedràtic José Beltrán 2, 46980 Paterna, Spain. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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33
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Oxidation of a lignin-derived-model compound: Iso-eugenol to vanillin over cerium containing MCM-22. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2020.106099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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34
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35
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36
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Lei L, Wang Y, Zhang Z, An J, Wang F. Transformations of Biomass, Its Derivatives, and Downstream Chemicals over Ceria Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01900] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Lijun Lei
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Yehong Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Zhixin Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Jinghua An
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Feng Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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Shah Bacha RU, Li L, Guo YR, Jing L, Pan QJ. Actinyl-Modified g-C 3N 4 as CO 2 Activation Materials for Chemical Conversion and Environmental Remedy via an Artificial Photosynthetic Route. Inorg Chem 2020; 59:8369-8379. [PMID: 32468810 DOI: 10.1021/acs.inorgchem.0c00791] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
With the reported CO2 activation for the oxidation of benzene to phenol (-ENE → -OL) by the graphitic carbon nitride g-C3N4 (CN) via an artificial photosynthetic route as inspiration, high-valent actinyls (AnmO2)n+ (An = U, Np, Pu; m = VI, V; n = 2, 1) have been introduced for its further modification. Our calculations indicate thermodynamic spontaneity in the feasibility of g-C3N4-(AnmO2)n+ (CN-Anm) formation. The magnificent structural and electronic properties of CN-Anm are utilized for CO2 activation in terms of the rarely studied -ENE → -OL conversion. The calculated free energies show that most steps of the catalytic cycle are favored by CN-Anm complexes. The first step (carbamate formation) is slightly endothermic in all cases, where CN-U is 0.51 eV higher than CN and CN-Pu is -0.01 eV lower. All benzene addition reactions release energy, with that for CN-U being the lowest. The phenolate formation is favored by some actinyl complexes over CN, and CN-U is only 0.23 eV higher. The phenol release (resulting in formamide complexes) and CO desorption are exothermic for all CN-Anm. The overall process suggests the improved catalytic performance of actinyl-modified CN materials, and the slightly depleted uranyl-carbon nitride could be one of the promising catalysts.
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Affiliation(s)
- Raza Ullah Shah Bacha
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Li Li
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Qing-Jiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
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Chen H, Lin W, Zhang Z, Yang Z, Jie K, Fu J, Yang SZ, Dai S. Facile benzene reduction promoted by a synergistically coupled Cu-Co-Ce ternary mixed oxide. Chem Sci 2020; 11:5766-5771. [PMID: 32832052 PMCID: PMC7416777 DOI: 10.1039/d0sc02238a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/14/2020] [Indexed: 12/17/2022] Open
Abstract
Hydrogenation of aromatic rings promoted by earth-abundant metal composites under mild conditions is an attractive and challenging subject in the long term.
Hydrogenation of aromatic rings promoted by earth-abundant metal composites under mild conditions is an attractive and challenging subject in the long term. In this work, a simple active site creation and stabilization strategy was employed to obtain a Cu+-containing ternary mixed oxide catalyst. Simply by pre-treatment of the ternary metal oxide precursor under a H2 atmosphere, a Cu+-derived heterogeneous catalyst was obtained and denoted as Cu1Co5Ce5Ox. The catalyst showed (1) high Cu+ species content, (2) a uniform distribution of Cu+ doped into the lattices of CoOx and CeO2, (3) formation of CoOx/CuOx and CeO2/CuOx interfaces, and (4) a mesoporous structure. These unique properties of Cu1Co5Ce5Ox endow it with pretty high hydrogenation activity for aromatic rings under mild conditions (100 °C with 5 bar H2), which is much higher than that of the corresponding binary counterparts and even exceeds the performance of commercial noble metal catalysts (e.g. Pd/C). The synergetic effect plays a crucial role in the catalytic procedure with CeO2 functioning as a hydrogen dissociation and transfer medium, Cu+ hydrogenating the benzene ring and CoOx stabilizing the unstable Cu+ species. This will unlock a new opportunity to design highly efficient earth-abundant metal-derived heterogeneous catalysts via interface interactions.
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Affiliation(s)
- Hao Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China . .,Department of Chemistry , University of Tennessee , Knoxville , TN 37996 , USA
| | - Wenwen Lin
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China .
| | - Zihao Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China .
| | - Zhenzhen Yang
- Department of Chemistry , University of Tennessee , Knoxville , TN 37996 , USA
| | - Kecheng Jie
- Department of Chemistry , University of Tennessee , Knoxville , TN 37996 , USA
| | - Jie Fu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China .
| | - Shi-Ze Yang
- Eyring Materials Center , Arizona State University , Tempe , 85257 , USA .
| | - Sheng Dai
- Department of Chemistry , University of Tennessee , Knoxville , TN 37996 , USA.,Chemical Sciences Division , Oak Ridge National Laboratory , Oak Ridge , TN 37831 , USA .
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Gold nanoparticles onto cerium oxycarbonate as highly efficient catalyst for aerobic allyl alcohol oxidation. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2020.105989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Rashed MN, Touchy AS, Chaudhari C, Jeon J, Siddiki SH, Toyao T, Shimizu KI. Selective C3-alkenylation of oxindole with aldehydes using heterogeneous CeO2 catalyst. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63515-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kammert J, Moon J, Wu Z. A review of the interactions between ceria and H2 and the applications to selective hydrogenation of alkynes. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63509-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li G, Wang B, Resasco DE. Water Promotion (or Inhibition) of Condensation Reactions Depends on Exposed Cerium Oxide Catalyst Facets. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01009] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Gengnan Li
- Center for Interfacial Reaction Engineering, School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, 100 East Boyd Street, Norman, Oklahoma 73019, United States
| | - Bin Wang
- Center for Interfacial Reaction Engineering, School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, 100 East Boyd Street, Norman, Oklahoma 73019, United States
| | - Daniel E. Resasco
- Center for Interfacial Reaction Engineering, School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, 100 East Boyd Street, Norman, Oklahoma 73019, United States
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Ceria-Based Catalysts Studied by Near Ambient Pressure X-ray Photoelectron Spectroscopy: A Review. Catalysts 2020. [DOI: 10.3390/catal10030286] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The development of better catalysts is a passionate topic at the forefront of modern science, where operando techniques are necessary to identify the nature of the active sites. The surface of a solid catalyst is dynamic and dependent on the reaction environment and, therefore, the catalytic active sites may only be formed under specific reaction conditions and may not be stable either in air or under high vacuum conditions. The identification of the active sites and the understanding of their behaviour are essential information towards a rational catalyst design. One of the most powerful operando techniques for the study of active sites is near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS), which is particularly sensitive to the surface and sub-surface of solids. Here we review the use of NAP-XPS for the study of ceria-based catalysts, widely used in a large number of industrial processes due to their excellent oxygen storage capacity and well-established redox properties.
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Catalytic Pyrolysis of Aliphatic Carboxylic Acids into Symmetric Ketones over Ceria-Based Catalysts: Kinetics, Isotope Effect and Mechanism. Catalysts 2020. [DOI: 10.3390/catal10020179] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ketonization is a promising way for upgrading bio-derived carboxylic acids from pyrolysis bio-oils, waste oils, and fats to produce high value-added chemicals and biofuels. Therefore, an understanding of its mechanism can help to carry out the catalytic pyrolysis of biomass more efficiently. Here we show that temperature-programmed desorption mass spectrometry (TPD-MS) together with linear free energy relationships (LFERs) can be used to identify catalytic pyrolysis mechanisms. We report the kinetics of the catalytic pyrolysis of deuterated acetic acid and a reaction series of linear and branched fatty acids into symmetric ketones on the surfaces of ceria-based oxides. A structure–reactivity correlation between Taft’s steric substituent constants Es* and activation energies of ketonization indicates that this reaction is the sterically controlled reaction. Surface D3-n-acetates transform into deuterated acetone isotopomers with different yield, rate, E≠, and deuterium kinetic isotope effect (DKIE). The obtained values of inverse DKIE together with the structure–reactivity correlation support a concerted mechanism over ceria-based catalysts. These results demonstrate that analysis of Taft’s correlations and using simple equation for estimation of DKIE from TPD-MS data are promising approaches for the study of catalytic pyrolysis mechanisms on a semi-quantitative level.
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Tamura M, Li Y, Tomishige K. One-pot imine synthesis from methylarenes and anilines under air over heterogeneous Cu oxide-modified CeO2 catalyst. Chem Commun (Camb) 2020; 56:7337-7340. [DOI: 10.1039/d0cc02969f] [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
Selective one-pot synthesis of imines from methylarenes and anilines with air as an oxidant was substantiated by heterogeneous Cu oxide-modified CeO2 (CuOx–CeO2) catalyst without additives.
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Affiliation(s)
- Masazumi Tamura
- Research Center for Artificial Photosynthesis
- Advanced Research Institute for Natural Science and Technology
- Osaka City University
- Osaka
- Japan
| | - Yingai Li
- Department of Applied Chemistry
- School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry
- School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
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Laga SM, Townsend TM, O'Connor AR, Mayer JM. Cooperation of cerium oxide nanoparticles and soluble molecular catalysts for alcohol oxidation. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01640f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-cerium oxide and organometallic catalysts cooperate in anaerobic and aerobic alcohol oxidations.
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Affiliation(s)
| | - Tanya M. Townsend
- Department of Chemistry
- Yale University
- New Haven
- USA
- Department of Chemistry
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Ozório MS, Andriani KF, Da Silva JLF. A hybrid-DFT investigation of the Ce oxidation state upon adsorption of F, Na, Ni, Pd and Pt on the (CeO2)6 cluster. Phys Chem Chem Phys 2020; 22:14099-14108. [DOI: 10.1039/c9cp07005b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of small polarons in CeO2−x compounds has been investigated mainly on solids, compact surfaces, and large nanoparticles.
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Affiliation(s)
- Mailde S. Ozório
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Karla F. Andriani
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
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Fisher TJ, Choudhry D, Derr K, Azadehranjbar S, Stasko D, Cheung CL. Mechanistic insights into the acetate-accelerated synthesis of crystalline ceria nanoparticles. RSC Adv 2020; 10:20515-20520. [PMID: 35517735 PMCID: PMC9054323 DOI: 10.1039/d0ra02309d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 05/21/2020] [Indexed: 01/15/2023] Open
Abstract
Lithium acetate was reported to accelerate the growth of crystalline ceria nanoparticles in ozone-mediated synthesis through promoting alcohol-like condensation reactions.
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Affiliation(s)
- Tamra J. Fisher
- Department of Chemistry
- University of Nebraska-Lincoln
- Lincoln
- USA
| | - Deepa Choudhry
- Department of Chemistry
- University of Nebraska-Lincoln
- Lincoln
- USA
| | - Kaitlynn Derr
- Department of Chemistry
- Missouri Western State University
- St. Joseph
- USA
| | - Soodabeh Azadehranjbar
- Department of Mechanical and Materials Engineering
- University of Nebraska-Lincoln
- Lincoln
- USA
| | - Dan Stasko
- Department of Chemistry
- Missouri Western State University
- St. Joseph
- USA
| | - Chin Li Cheung
- Department of Chemistry
- University of Nebraska-Lincoln
- Lincoln
- USA
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50
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Moyer K, Conklin DR, Mukarakate C, Vardon DR, Nimlos MR, Ciesielski PN. Hierarchically Structured CeO 2 Catalyst Particles From Nanocellulose/Alginate Templates for Upgrading of Fast Pyrolysis Vapors. Front Chem 2019; 7:730. [PMID: 31737604 PMCID: PMC6831546 DOI: 10.3389/fchem.2019.00730] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/11/2019] [Indexed: 01/22/2023] Open
Abstract
Hierarchically structured porous materials often exhibit advantageous functionality for many applications including catalysts, adsorbents, and filtration systems. In this study, we report a facile approach to achieve hierarchically structured, porous cerium oxide (CeO2) catalyst particles using a templating method based on nanocellulose, a class of renewable, plant-derived nanomaterials. We demonstrate the catalyst performance benefits provided by this templating method in the context of Catalytic Fast Pyrolysis (CFP) which is a promising conversion technology to produce renewable fuel and chemical products from biomass and other types of organic waste. We show that variations in the porous structures imparted by this templating method may be achieved by modifying the content of cellulose nanofibrils, cellulose nanocrystals, and alginate in the templating suspensions. Nitrogen physisorption reveals that nearly 10-fold increases in surface area can be achieved using this method with respect to commercially available cerium oxide powder. Multiscale electron microscopy further verifies that bio-derived templating can alter the morphology of the catalyst nanostructure and tune the distribution of meso- and macro-porosity within the catalyst particles while maintaining CeO2 crystal structure. CFP experiments demonstrate that the templated catalysts display substantially higher activity on a gravimetric basis than their non-templated counterpart, and that variations in the catalyst architecture can impact the distribution of upgraded pyrolysis products. Finally, we demonstrate that the templating method described here may be extended to other materials derived from metal chlorides to achieve 3-dimensional networks of hierarchical porosity.
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Affiliation(s)
- Kathleen Moyer
- Interdisciplinary Materials Science Program, Vanderbilt University, Nashville, TN, United States
| | - Davis R Conklin
- National Renewable Energy Laboratory, National Bioenergy Center, Golden, CO, United States
| | - Calvin Mukarakate
- National Renewable Energy Laboratory, National Bioenergy Center, Golden, CO, United States
| | - Derek R Vardon
- National Renewable Energy Laboratory, National Bioenergy Center, Golden, CO, United States
| | - Mark R Nimlos
- National Renewable Energy Laboratory, National Bioenergy Center, Golden, CO, United States
| | - Peter N Ciesielski
- National Renewable Energy Laboratory, Biosciences Center, Golden, CO, United States
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