1
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Lou S, Meng X, Liu N, Shi L. A-site deficient Titanate perovskite surface with exsolved nickel nanoparticles for ethanol steam reforming. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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2
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Li K, Li X, Li L, Chang X, Wu S, Yang C, Song X, Zhao ZJ, Gong J. Nature of Catalytic Behavior of Cobalt Oxides for CO 2 Hydrogenation. JACS AU 2023; 3:508-515. [PMID: 36873681 PMCID: PMC9975827 DOI: 10.1021/jacsau.2c00632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/01/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Cobalt oxide (CoO x ) catalysts are widely applied in CO2 hydrogenation but suffer from structural evolution during the reaction. This paper describes the complicated structure-performance relationship under reaction conditions. An iterative approach was employed to simulate the reduction process with the help of neural network potential-accelerated molecular dynamics. Based on the reduced models of catalysts, a combined theoretical and experimental study has discovered that CoO(111) provides active sites to break C-O bonds for CH4 production. The analysis of the reaction mechanism indicated that the C-O bond scission of *CH2O species plays a key role in producing CH4. The nature of dissociating C-O bonds is attributed to the stabilization of *O atoms after C-O bond cleavage and the weakening of C-O bond strength by surface-transferred electrons. This work may offer a paradigm to explore the origin of performance over metal oxides in heterogeneous catalysis.
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Affiliation(s)
- Kailang Li
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Xianghong Li
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Lulu Li
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Xin Chang
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Shican Wu
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Chengsheng Yang
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Xiwen Song
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Zhi-Jian Zhao
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
| | - Jinlong Gong
- Key
Laboratory for Green Chemical Technology of Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center for Chemical
Science and Engineering, Tianjin 300072, China
- Joint
School of National University of Singapore and Tianjin University,
International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Haihe
Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- National
Industry-Education Platform of Energy Storage, Tianjin University, 135 Yaguan Road, Tianjin 300350, China
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3
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Efficient Conversion of Ethanol to Hydrogen in a Hybrid Plasma-Catalytic Reactor. ENERGIES 2022. [DOI: 10.3390/en15093050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The present work describes highly efficient hydrogen production from ethanol in a plasma-catalytic reactor depending on the discharge power and catalyst bed temperature. Hydrogen production increased as the power increased from 15 to 25 W. A further power increase to 35 W did not increase hydrogen production. The catalyst was already active at a temperature of 250 °C, and its activity increased with increasing temperature to 450 °C. The further temperature increase did not increase the activity of the cobalt catalyst. The most important advantage of using the catalyst was the increased ethanol conversion to CO2 instead of CO production. As a result, the hydrogen yield was very high and reached 4.1 mol(H2)/mol(C2H5OH). This result was obtained with a stoichiometric molar ratio of water to ethanol of 3.
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4
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Abstract
In this work, a metal cobalt catalyst was synthesized, and its activity in the hydrogen production process was tested. The substrates were water and ethanol. Activity tests were conducted at a temperature range of 350–600 °C, water to ethanol molar ratio of 3 to 5, and a feed flow of 0.4 to 1.2 mol/h. The catalyst had a specific surface area of 1.75 m2/g. The catalyst was most active at temperatures in the range of 500–600 °C. Under the most favorable conditions, the ethanol conversion was 97%, the hydrogen production efficiency was 4.9 mol (H2)/mol(ethanol), and coke production was very low (16 mg/h). Apart from hydrogen and coke, CO2, CH4, CO, and traces of C2H2 and C2H4 were formed.
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5
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Taherian Z, Khataee A, Han N, Orooji Y. Hydrogen production through methane reforming processes using promoted-Ni/mesoporous silica: A review. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.12.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Naikoo GA, Arshad F, Hassan IU, Tabook MA, Pedram MZ, Mustaqeem M, Tabassum H, Ahmed W, Rezakazemi M. Thermocatalytic Hydrogen Production Through Decomposition of Methane-A Review. Front Chem 2021; 9:736801. [PMID: 34765584 PMCID: PMC8576817 DOI: 10.3389/fchem.2021.736801] [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: 07/05/2021] [Accepted: 10/06/2021] [Indexed: 11/26/2022] Open
Abstract
Consumption of fossil fuels, especially in transport and energy-dependent sectors, has led to large greenhouse gas production. Hydrogen is an exciting energy source that can serve our energy purposes and decrease toxic waste production. Decomposition of methane yields hydrogen devoid of COx components, thereby aiding as an eco-friendly approach towards large-scale hydrogen production. This review article is focused on hydrogen production through thermocatalytic methane decomposition (TMD) for hydrogen production. The thermodynamics of this approach has been highlighted. Various methods of hydrogen production from fossil fuels and renewable resources were discussed. Methods including steam methane reforming, partial oxidation of methane, auto thermal reforming, direct biomass gasification, thermal water splitting, methane pyrolysis, aqueous reforming, and coal gasification have been reported in this article. A detailed overview of the different types of catalysts available, the reasons behind their deactivation, and their possible regeneration methods were discussed. Finally, we presented the challenges and future perspectives for hydrogen production via TMD. This review concluded that among all catalysts, nickel, ruthenium and platinum-based catalysts show the highest activity and catalytic efficiency and gave carbon-free hydrogen products during the TMD process. However, their rapid deactivation at high temperatures still needs the attention of the scientific community.
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Affiliation(s)
- Gowhar A. Naikoo
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | - Fareeha Arshad
- Department of Biochemistry, Aligarh Muslim University, Aligarh, India
| | | | - Musallam A. Tabook
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah, Oman
| | - Mona Z. Pedram
- Mechanical Engineering-Energy Division, K. N. Toosi University of Technology, Tehran, Iran
| | - Mujahid Mustaqeem
- Institute of Physics, Academia Sinica, Taipei, Taiwan
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Hassina Tabassum
- Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, NY, United States
| | - Waqar Ahmed
- School of Mathematics and Physics, College of Science, University of Lincoln, Lincoln, United Kingdom
| | - Mashallah Rezakazemi
- School of Mathematics and Physics, College of Science, University of Lincoln, Lincoln, United Kingdom
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7
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Synthesis of Catalytic Ni/Cu Nanoparticles from Simulated Wastewater on Li–Al Mixed Metal Oxides for a Two-Stage Catalytic Process in Ethanol Steam Reforming: Catalytic Performance and Coke Properties. Catalysts 2021. [DOI: 10.3390/catal11091124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This work recovered Ni or Cu cations from simulated electroplating wastewater to synthesize Ni/Cu nano-catalysts for H2 generation by ethanol steam reforming (ESR). Aluminum lathe waste was used as a framework to prepare the structured catalyst. Li–Al–CO3 layered double hydroxide (LDH) was electrodeposited on the surface of the framework. The LDH was in a platelet-like structure, working as a support for the formation of the precursor of the metal catalysts. The catalytic performance and the coke properties of a 6Cu_6Ni two-stage catalyst configuration herein used for ESR catalytic reaction were studied. The Cu–Ni two-stage catalyst configuration (6Cu_6Ni) yielded more H2 (~10%) than that by using the Ni-based catalyst (6Ni) only. The 6Cu_6Ni catalyst configuration also resulted in a relatively stable H2 generation rate vs. time, with nearly no decline during the 5-h reaction. Through the pre-reaction of ethanol-steam mixture with Cu/LiAlO2 catalyst, the Ni/LiAlO2 catalyst in the 6Cu_6Ni catalyst configuration could steadily decompose acetaldehyde, and rare acetate groups, which would evolve condensed coke, were formed. The Ni nanoparticles were observed to be lifted and separated by the carbon filaments from the support and had no indication of sintering, contributing to the bare deactivation of the Ni/LiAlO2 catalyst in 6Cu_6Ni.
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8
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In-situ investigation of ethanol steam reforming on Ni and Cr doped ferrites using combined X-ray absorption spectroscopy, mass spectrometry, and gas chromatography. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Facet-Dependent Reactivity of Ceria Nanoparticles Exemplified by CeO2-Based Transition Metal Catalysts: A Critical Review. Catalysts 2021. [DOI: 10.3390/catal11040452] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The rational design and fabrication of highly-active and cost-efficient catalytic materials constitutes the main research pillar in catalysis field. In this context, the fine-tuning of size and shape at the nanometer scale can exert an intense impact not only on the inherent reactivity of catalyst’s counterparts but also on their interfacial interactions; it can also opening up new horizons for the development of highly active and robust materials. The present critical review, focusing mainly on our recent advances on the topic, aims to highlight the pivotal role of shape engineering in catalysis, exemplified by noble metal-free, CeO2-based transition metal catalysts (TMs/CeO2). The underlying mechanism of facet-dependent reactivity is initially discussed. The main implications of ceria nanoparticles’ shape engineering (rods, cubes, and polyhedra) in catalysis are next discussed, on the ground of some of the most pertinent heterogeneous reactions, such as CO2 hydrogenation, CO oxidation, and N2O decomposition. It is clearly revealed that shape functionalization can remarkably affect the intrinsic features and in turn the reactivity of ceria nanoparticles. More importantly, by combining ceria nanoparticles (CeO2 NPs) of specific architecture with various transition metals (e.g., Cu, Fe, Co, and Ni) remarkably active multifunctional composites can be obtained due mainly to the synergistic metalceria interactions. From the practical point of view, novel catalyst formulations with similar or even superior reactivity to that of noble metals can be obtained by co-adjusting the shape and composition of mixed oxides, such as Cu/ceria nanorods for CO oxidation and Ni/ceria nanorods for CO2 hydrogenation. The conclusions derived could provide the design principles of earth-abundant metal oxide catalysts for various real-life environmental and energy applications.
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10
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Kuang C, Xu Y, Xie G, Pan Z, Zheng L, Lai W, Ling J, Talawar M, Zhou X. Preparation of CeO 2-doped carbon nanotubes cathode and its mechanism for advanced treatment of pig farm wastewater. CHEMOSPHERE 2021; 262:128215. [PMID: 33182126 DOI: 10.1016/j.chemosphere.2020.128215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
The effluent from conventional treatment process (including anaerobic digestion and anoxic-oxic treatment) for pig farm wastewater was difficult to treat due to its low ratio of biochemical oxygen demand to chemical oxygen demand (BOD5/CODCr) (<0.1). In the present study, electro-Fenton (EF) was used to improve the biodegradability of the mentioned effluent and the properties of self-prepared CeO2-doped multi-wall carbon nanotubes (MWCNTs) electrodes were also studied. An excellent H2O2 production (165 mg L-1) was recorded, after an 80-min electrolysis, when the mass ratio of MWCNTs, CeO2 and pore-forming agent (NH4HCO3) was 6:1:1. Results of scanning electron microscopy (SEM), transmission electron microscope (TEM) and x-ray photoelectron spectroscopy (XPS) showed that addition of NH4HCO3 and the doping of CeO2 could increase the superficial area of the electrode as well as the oxygen reduction reaction (ORR) electro-catalytic performance. The BOD5/CODCr of the wastewater from the first stage AO process increased from 0.08 to 0.45 and CODCr reduced 71.5% after an 80-min electrolysis, with 0.3 mM Fe2+ solution. The non-biodegradable chemical pollutants from the first stage AO process were degraded by EF. The non-biodegradable pollutants identified by LC-MS/MS in the effluent from AO process including aminopyrine, oxadixyl and 3-methyl-2-quinoxalinecarboxylic acid could be degraded by EF process, with the removal rates of 81.86%, 34.39% and 7.13% in 80 min, and oxytetracycline with the removal rate of 100% in 20 min. Therefore, electro-Fenton with the new CeO2-doped MWCNTs cathode electrode will be a promising supplement for advanced treatment of pig farm wastewater.
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Affiliation(s)
- Chaozhi Kuang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Yanbin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China.
| | - Guangyan Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Zhanchang Pan
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Li Zheng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Weikang Lai
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Jiayin Ling
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Manjunatha Talawar
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
| | - Xiao Zhou
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 51006, China
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11
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Phongpreecha T, Christy KF, Singh SK, Hao P, Hodge DB. Effect of catalyst and reaction conditions on aromatic monomer yields, product distribution, and sugar yields during lignin hydrogenolysis of silver birch wood. BIORESOURCE TECHNOLOGY 2020; 316:123907. [PMID: 32739581 DOI: 10.1016/j.biortech.2020.123907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
The impact of catalyst choice and reaction conditions during catalytic hydrogenolysis of silver birch biomass are assessed for their effect on aromatic monomer yields and selectivities, lignin removal, and sugar yields from enzymatic hydrolysis. At a reaction temperature of 220 °C with no supplemental H2, it was demonstrated that both Co/C and Ni/C exhibited aromatic monomer yields of >50%, which were close to the theoretical maximum expected for the lignin based on total β-O-4 content and exhibited high selectivities for 4-propylguaiacol and 4-propylsyringol. Pd/C exhibited a significantly different set of products, and using a model lignin dimer, showed a product profile that shifted upon inclusion of supplemental H2, suggesting that the generation of surface hydrogen is critical for this catalyst system. Lignin removal during hydrogenolysis could be correlated to glucose yields and inclusion of lignin depolymerizing catalysts significantly improves lignin removal and subsequent enzymatic hydrolysis yields.
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Affiliation(s)
| | - Kendall F Christy
- Department of Chemical Engineering and Materials Science, Michigan State University, United States
| | - Sandip K Singh
- Chemical & Biological Engineering Department, Montana State University, United States
| | - Pengchao Hao
- Department of Chemistry, Michigan State University, United States
| | - David B Hodge
- Chemical & Biological Engineering Department, Montana State University, United States; Division of Sustainable Process Engineering, Luleå University of Technology, Luleå, Sweden.
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12
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Wang Y, Liu Z, Wang R. NaBH
4
Surface Modification on CeO
2
Nanorods Supported Transition‐Metal Catalysts for Low Temperature CO Oxidation. ChemCatChem 2020. [DOI: 10.1002/cctc.202000789] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yifan Wang
- Department of Metallurgical and Materials Engineering The University of Alabama Tuscaloosa AL 35487 USA
| | - Zhongqi Liu
- Department of Metallurgical and Materials Engineering The University of Alabama Tuscaloosa AL 35487 USA
| | - Ruigang Wang
- Department of Metallurgical and Materials Engineering The University of Alabama Tuscaloosa AL 35487 USA
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13
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Effect of the Preparation Method on the Physicochemical Properties and the CO Oxidation Performance of Nanostructured CeO2/TiO2 Oxides. Processes (Basel) 2020. [DOI: 10.3390/pr8070847] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Ceria-based mixed oxides have been widely studied in catalysis due to their unique surface and redox properties, with implications in numerous energy- and environmental-related applications. In this regard, the rational design of ceria-based composites by means of advanced synthetic routes has gained particular attention. In the present work, ceria–titania composites were synthesized by four different methods (precipitation, hydrothermal in one and two steps, Stöber) and their effect on the physicochemical characteristics and the CO oxidation performance was investigated. A thorough characterization study, including N2 adsorption-desorption, X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS), transmission electron microscopy (TEM) and H2 temperature-programmed reduction (H2-TPR) was performed. Ceria–titania samples prepared by the Stöber method, exhibited the optimum CO oxidation performance, followed by samples prepared by the hydrothermal method in one step, whereas the precipitation method led to almost inactive oxides. CeO2/TiO2 samples synthesized by the Stöber method display a rod-like morphology of ceria nanoparticles with a uniform distribution of TiO2, leading to enhanced reducibility and oxygen storage capacity (OSC). A linear relationship was disclosed among the catalytic performance of the samples prepared by different methods and the abundance of reducible oxygen species.
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14
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Bioalcohol Reforming: An Overview of the Recent Advances for the Enhancement of Catalyst Stability. Catalysts 2020. [DOI: 10.3390/catal10060665] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The growing demand for energy production highlights the shortage of traditional resources and the related environmental issues. The adoption of bioalcohols (i.e., alcohols produced from biomass or biological routes) is progressively becoming an interesting approach that is used to restrict the consumption of fossil fuels. Bioethanol, biomethanol, bioglycerol, and other bioalcohols (propanol and butanol) represent attractive feedstocks for catalytic reforming and production of hydrogen, which is considered the fuel of the future. Different processes are already available, including steam reforming, oxidative reforming, dry reforming, and aqueous-phase reforming. Achieving the desired hydrogen selectivity is one of the main challenges, due to the occurrence of side reactions that cause coke formation and catalyst deactivation. The aims of this review are related to the critical identification of the formation of carbon roots and the deactivation of catalysts in bioalcohol reforming reactions. Furthermore, attention is focused on the strategies used to improve the durability and stability of the catalysts, with particular attention paid to the innovative formulations developed over the last 5 years.
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15
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Recent Advances on the Rational Design of Non-Precious Metal Oxide Catalysts Exemplified by CuOx/CeO2 Binary System: Implications of Size, Shape and Electronic Effects on Intrinsic Reactivity and Metal-Support Interactions. Catalysts 2020. [DOI: 10.3390/catal10020160] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Catalysis is an indispensable part of our society, massively involved in numerous energy and environmental applications. Although, noble metals (NMs)-based catalysts are routinely employed in catalysis, their limited resources and high cost hinder the widespread practical application. In this regard, the development of NMs-free metal oxides (MOs) with improved catalytic activity, selectivity and durability is currently one of the main research pillars in the area of heterogeneous catalysis. The present review, involving our recent efforts in the field, aims to provide the latest advances—mainly in the last 10 years—on the rational design of MOs, i.e., the general optimization framework followed to fine-tune non-precious metal oxide sites and their surrounding environment by means of appropriate synthetic and promotional/modification routes, exemplified by CuOx/CeO2 binary system. The fine-tuning of size, shape and electronic/chemical state (e.g., through advanced synthetic routes, special pretreatment protocols, alkali promotion, chemical/structural modification by reduced graphene oxide (rGO)) can exert a profound influence not only to the reactivity of metal sites in its own right, but also to metal-support interfacial activity, offering highly active and stable materials for real-life energy and environmental applications. The main implications of size-, shape- and electronic/chemical-adjustment on the catalytic performance of CuOx/CeO2 binary system during some of the most relevant applications in heterogeneous catalysis, such as CO oxidation, N2O decomposition, preferential oxidation of CO (CO-PROX), water gas shift reaction (WGSR), and CO2 hydrogenation to value-added products, are thoroughly discussed. It is clearly revealed that the rational design and tailoring of NMs-free metal oxides can lead to extremely active composites, with comparable or even superior reactivity than that of NMs-based catalysts. The obtained conclusions could provide rationales and design principles towards the development of cost-effective, highly active NMs-free MOs, paving also the way for the decrease of noble metals content in NMs-based catalysts.
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16
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Konsolakis M, Lykaki M, Stefa S, Carabineiro SAC, Varvoutis G, Papista E, Marnellos GE. CO 2 Hydrogenation over Nanoceria-Supported Transition Metal Catalysts: Role of Ceria Morphology (Nanorods versus Nanocubes) and Active Phase Nature (Co versus Cu). NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1739. [PMID: 31817667 PMCID: PMC6955880 DOI: 10.3390/nano9121739] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/28/2019] [Accepted: 12/02/2019] [Indexed: 11/28/2022]
Abstract
In this work we report on the combined impact of active phase nature (M: Co or Cu) and ceria nanoparticles support morphology (nanorods (NR) or nanocubes (NC)) on the physicochemical characteristics and CO2 hydrogenation performance of M/CeO2 composites at atmospheric pressure. It was found that CO2 conversion followed the order: Co/CeO2 > Cu/CeO2 > CeO2, independently of the support morphology. Co/CeO2 catalysts demonstrated the highest CO2 conversion (92% at 450 °C), accompanied by 93% CH4 selectivity. On the other hand, Cu/CeO2 samples were very selective for CO production, exhibiting 52% CO2 conversion and 95% CO selectivity at 380 °C. The results obtained in a wide range of H2:CO2 ratios (1-9) and temperatures (200-500 °C) are reaching in both cases the corresponding thermodynamic equilibrium conversions, revealing the superiority of Co- and Cu-based samples in methanation and reverse water-gas shift (rWGS) reactions, respectively. Moreover, samples supported on ceria nanocubes exhibited higher specific activity (µmol CO2·m-2·s-1) compared to samples of rod-like shape, disclosing the significant role of support morphology, besides that of metal nature (Co or Cu). Results are interpreted on the basis of different textural and redox properties of as-prepared samples in conjunction to the different impact of metal entity (Co or Cu) on CO2 hydrogenation process.
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Affiliation(s)
- Michalis Konsolakis
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Maria Lykaki
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Sofia Stefa
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Sόnia A. C. Carabineiro
- Laboratório de Catálise e Materiais (LCM), Laboratório Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal
| | - Georgios Varvoutis
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, GR-57001 Thermi, Thessaloniki, Greece
| | - Eleni Papista
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
| | - Georgios E. Marnellos
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, GR-57001 Thermi, Thessaloniki, Greece
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17
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Ho PH, Jabłońska M, Nocuń M, Fornasari G, Ospitali F, Vaccari A, Benito P, Palkovits R. Effect of Neodymium on the Physico‐chemical Properties and N
2
O Decomposition Activity of Co(Cu)−Al Mixed Oxides. ChemCatChem 2019. [DOI: 10.1002/cctc.201901394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Phuoc Hoang Ho
- Institut für Technische und Makromolekulare ChemieRWTH Aachen University Worringerweg 2 52074 Aachen Germany
- Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Magdalena Jabłońska
- Institut für Technische und Makromolekulare ChemieRWTH Aachen University Worringerweg 2 52074 Aachen Germany
- Center for Automotive Catalytic Systems AachenRWTH Aachen University Schinkelstr. 8 52062 Aachen Germany
| | - Marek Nocuń
- Faculty of Material Science and CeramicsAGH University of Science and Technology Mickiewicza 30 30-059 Kraków Poland
| | - Giuseppe Fornasari
- Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Francesca Ospitali
- Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Angelo Vaccari
- Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Patricia Benito
- Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Regina Palkovits
- Institut für Technische und Makromolekulare ChemieRWTH Aachen University Worringerweg 2 52074 Aachen Germany
- Center for Automotive Catalytic Systems AachenRWTH Aachen University Schinkelstr. 8 52062 Aachen Germany
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Abstract
Spent solvents of the packaging industry are disposed of, thus representing economic, safety, and environmental issues. Steam reforming of these solvent streams can be an alternative, allowing their valorization to syngas. In this work, ceria supported nickel catalysts were deposed onto silicon carbide (SiC) honeycomb monoliths; these structured catalysts can be potentially used in solar steam reforming. Catalysts were characterized by SEM/EDS and tested in a lab-scale rig under conventional heating. Two spent solvent streams, coming from the distillation plant of the packaging industry Icimendue, were used as fuels. Catalytic tests have been carried out by changing the steam/carbon ratio, oxygen/carbon ratio, operating pressure, and fuel. The effect of the Ni content and the type of ceria were also studied. The best performances were obtained at low Ni content and by using micrometric rather than nanometric ceria as support. The structured catalysts showed good coking resistance, especially at H2O/C > 2, with oxygen addition furnishing a marginal improvement. On the contrary, oxygen feeding reduced the gas yield due to the formation of by-products being less reactive in reforming reactions. Performing the reforming process at high pressure the gas yield increased due to faster kinetics (higher reactants concentrations), higher contact times (slower flow rates), and process intensification. These results suggest that the proposed structured catalysts could be successfully applied in the solar reforming of spent solvents.
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19
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Yang C, Liu S, Wang Y, Song J, Wang G, Wang S, Zhao Z, Mu R, Gong J. The Interplay between Structure and Product Selectivity of CO
2
Hydrogenation. Angew Chem Int Ed Engl 2019; 58:11242-11247. [DOI: 10.1002/anie.201904649] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/12/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Chengsheng Yang
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Sihang Liu
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Yanan Wang
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Jimin Song
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Guishuo Wang
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Shuai Wang
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Zhi‐Jian Zhao
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Rentao Mu
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
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Yang P, Li N, Teng J, Wu J, Ma H. Effect of template on catalytic performance of La0.7Ce0.3Ni0.7Fe0.3O3 for ethanol steam reforming reaction. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2018.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Abstract
Ni, Co, and Co–Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the reduction properties and catalytic performance of catalysts was observed after adding Zn and Ce. Over an 8 h test, Ni/SBA-15 showed the best activity and stability. The conversion was 90% for CH4 and CO2. Co–Ni/SBA-15 and Co–Ni/Ce–SBA-15 have shown a reasonable activity and stability. Selectivity of the Ni/SBA-15 catalyst was higher than all other catalysts as indicated by the H2/CO ratio. Co/SBA-15 and Co–Ni/Zn–SBA-15 showed a low activity and selectivity. TPD–NH3 profiles indicated that doping SBA-15 with Ce and/or Zn increased the catalyst acidic sites. Ni/SBA-15 is an excellent potential catalyst for commercial methane dry reforming processes.
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22
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Facet-Dependent Reactivity of Fe2O3/CeO2 Nanocomposites: Effect of Ceria Morphology on CO Oxidation. Catalysts 2019. [DOI: 10.3390/catal9040371] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Ceria has been widely studied either as catalyst itself or support of various active phases in many catalytic reactions, due to its unique redox and surface properties in conjunction to its lower cost, compared to noble metal-based catalytic systems. The rational design of catalytic materials, through appropriate tailoring of the particles’ shape and size, in order to acquire highly efficient nanocatalysts, is of major significance. Iron is considered to be one of the cheapest transition metals while its interaction with ceria support and their shape-dependent catalytic activity has not been fully investigated. In this work, we report on ceria nanostructures morphological effects (cubes, polyhedra, rods) on the textural, structural, surface, redox properties and, consequently, on the CO oxidation performance of the iron-ceria mixed oxides (Fe2O3/CeO2). A full characterization study involving N2 adsorption at –196 °C, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), temperature programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS) was performed. The results clearly revealed the key role of support morphology on the physicochemical properties and the catalytic behavior of the iron-ceria binary system, with the rod-shaped sample exhibiting the highest catalytic performance, both in terms of conversion and specific activity, due to its improved reducibility and oxygen mobility, along with its abundance in Fe2+ species.
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23
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Li MR, Song YY, Wang GC. The Mechanism of Steam-Ethanol Reforming on Co13/CeO2–x: A DFT Study. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03765] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Meng-Ru Li
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and the Tianjin key Lab and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yang-Yang Song
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and the Tianjin key Lab and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Gui-Chang Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) and the Tianjin key Lab and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
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24
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Al-Swai BM, Osman N, Alnarabiji MS, Adesina AA, Abdullah B. Syngas Production via Methane Dry Reforming over Ceria–Magnesia Mixed Oxide-Supported Nickel Catalysts. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03671] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Basem M. Al-Swai
- Chemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
| | - Noridah Osman
- Chemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
| | - Mohamad Sahban Alnarabiji
- Chemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
| | | | - Bawadi Abdullah
- Chemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
- CO2 Utilization Group, Institute Contaminant Management for Oil and Gas, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Perak, Malaysia
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25
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Ding G, Gan T, Yu J, Li P, Yao X, Hou N, Fan L, Zhao Y, Li Y. Carbon-resistant Ni1-xCox-Ce0.8Sm0.2O1.9 anode for solid oxide fuel cells fed with methanol. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.03.060] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Kumar A, Prasad R, Sharma YC. Ethanol steam reforming with Co 0 (111) for hydrogen and carbon nanofilament generation. RESOURCE-EFFICIENT TECHNOLOGIES 2017. [DOI: 10.1016/j.reffit.2017.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Jabłońska EM, Buselli L, Nocuń EM, Palkovits R. Silver-Doped Cobalt (Magnesium) Aluminum Mixed Metal Oxides as Potential Catalysts for Nitrous Oxide Decomposition. ChemCatChem 2017. [DOI: 10.1002/cctc.201700777] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Eng. Magdalena Jabłońska
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringerweg 2 52074 Aachen Germany
- Center for Automotive Catalytic Systems Aachen-ACA; RWTH Aachen University; Schinkelstr. 8 52062 Aachen Germany
| | - Lorenzo Buselli
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringerweg 2 52074 Aachen Germany
| | - Eng. Marek Nocuń
- Faculty of Material Science and Ceramics; AGH University of Science and Technology; Mickiewicza 30 30-059 Kraków Poland
| | - Regina Palkovits
- Institut für Technische und Makromolekulare Chemie; RWTH Aachen University; Worringerweg 2 52074 Aachen Germany
- Center for Automotive Catalytic Systems Aachen-ACA; RWTH Aachen University; Schinkelstr. 8 52062 Aachen Germany
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28
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Díez-Ramírez J, Sánchez P, Kyriakou V, Zafeiratos S, Marnellos G, Konsolakis M, Dorado F. Effect of support nature on the cobalt-catalyzed CO2 hydrogenation. J CO2 UTIL 2017. [DOI: 10.1016/j.jcou.2017.08.019] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Influence of Catalytic Formulation and Operative Conditions on Coke Deposition over CeO2-SiO2 Based Catalysts for Ethanol Reforming. ENERGIES 2017. [DOI: 10.3390/en10071030] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4. Catalysts 2017. [DOI: 10.3390/catal7040125] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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33
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Effect of water vapor and α -Fe 2 O 3 on elemental mercury removal performance over cerium oxide modified semi coke. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/s1872-5813(17)30021-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Response Surface Methodology and Aspen Plus Integration for the Simulation of the Catalytic Steam Reforming of Ethanol. Catalysts 2017. [DOI: 10.3390/catal7010015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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35
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Lykaki M, Pachatouridou E, Iliopoulou E, Carabineiro SAC, Konsolakis M. Impact of the synthesis parameters on the solid state properties and the CO oxidation performance of ceria nanoparticles. RSC Adv 2017. [DOI: 10.1039/c6ra26712b] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A direct quantitative correlation of surface-to-bulk (Os/Ob) reducible oxygen of ceria nanoparticles (NPs) with catalytic activity was revealed.
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Affiliation(s)
- Maria Lykaki
- School of Production Engineering and Management
- Technical University of Crete
- GR-73100 Chania
- Greece
| | - Eleni Pachatouridou
- School of Production Engineering and Management
- Technical University of Crete
- GR-73100 Chania
- Greece
- Chemical Process & Energy Resources Institute (CPERI)
| | - Eleni Iliopoulou
- Chemical Process & Energy Resources Institute (CPERI)
- Centre for Research & Technology Hellas (CERTH)
- Thessaloniki
- Greece
| | - Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais (LCM)
- Laboratório Associado LSRE-LCM
- Faculdade de Engenharia
- Universidade do Porto
- 4200-465 Porto
| | - Michalis Konsolakis
- School of Production Engineering and Management
- Technical University of Crete
- GR-73100 Chania
- Greece
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37
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Dolomite-Derived Ni-Based Catalysts with Fe Modification for Hydrogen Production via Auto-Thermal Reforming of Acetic Acid. Catalysts 2016. [DOI: 10.3390/catal6060085] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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