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Study of the Kinetics of Reduction of IrO2 on TiO2 (Anatase) by Temperature-Programmed Reduction. INORGANICS 2023. [DOI: 10.3390/inorganics11020066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The interaction between IrO2 and TiO2 (anatase) in non-isothermal reduction conditions has been studied by the temperature programmed reduction technique. IrO2 clusters are of sizes between 0.5 and 0.9 nm as determined from High Resolution Transmission Electron Microscopy (HRTEM). Largely, two main regions for reduction were found and modeled at ca. 100 and 230 °C. The first region is attributed to the partial reduction of IrO2 clusters, while the second one is due to reduction of the formed crystalline (rutile IrO2), during TPR, to Ir metal. Two methods for calculating kinetic parameters were tested. First, by applying different ramping rates on a 3.5 wt.% IrO2/TiO2 using Kissinger’s method. The apparent activation energy values for the first and second reduction regions were found to be ca. 35 and 100 kJ/mol, respectively. The second method was based on fitting different kinetic models for the experimental results in order to extract qualitative information on the nature of interaction during the reduction process. It was found that the first reduction is largely due to the amount of IrO2 (reactant concentration) while the second one involved phase boundary effect as well as nucleation.
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El‐Salamony RA. Catalytic Steam Reforming of Ethanol to Produce Hydrogen: Modern and Efficient Catalyst Modification Strategies. ChemistrySelect 2023. [DOI: 10.1002/slct.202203195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Radwa A. El‐Salamony
- Process Development Department Egyptian petroleum research institute (EPRI) Cairo Egypt
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Steam reforming of monoatomic aliphatic alcohols: factors affecting an equilibrium composition of products. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3600-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Salman MS, Rambhujun N, Pratthana C, Srivastava K, Aguey-Zinsou KF. Catalysis in Liquid Organic Hydrogen Storage: Recent Advances, Challenges, and Perspectives. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03970] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Muhammad Saad Salman
- MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Nigel Rambhujun
- MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Chulaluck Pratthana
- MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Kshitij Srivastava
- MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
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Phung TK, Pham TLM, Nguyen ANT, Vu KB, Giang HN, Nguyen TA, Huynh TC, Pham HD. Effect of Supports and Promoters on the Performance of Ni‐Based Catalysts in Ethanol Steam Reforming. Chem Eng Technol 2020. [DOI: 10.1002/ceat.201900445] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Thanh Khoa Phung
- International UniversitySchool of Biotechnology Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Thong Le Minh Pham
- Duy Tan UniversityInstitute of Research and Development 550000 Da Nang City Vietnam
| | - Anh-Nga T. Nguyen
- Ton Duc Thang UniversityBiomaterials and Nanotechnology Research Group, Faculty of Applied Sciences Ho Chi Minh City Vietnam
| | - Khanh B. Vu
- International UniversitySchool of Biotechnology Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Ha Ngoc Giang
- Ho Chi Minh City University of Food IndustryDepartment of Chemical Engineering 140 Le Trong Tan Street, Tay Thanh Ward, Tan Binh District Ho Chi Minh City Vietnam
| | - Tuan-Anh Nguyen
- Ho Chi Minh City University of TechnologyFaculty of Chemical Engineering VNU-HCM, 268 Ly Thuong Kiet Ho Chi Minh City Vietnam
| | - Thanh Cong Huynh
- Institute of Applied Material ScienceOrganic Material Department Ho Chi Minh City Vietnam
| | - Hong Duc Pham
- Queensland University of Technology (QUT)Institute of Future Environment, School of Chemistry, Physics and Mechanical Engineering 2 George Street Brisbane Australia
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Role of oxygen storage/supply capacity of mixed oxides of Ce and Zr in ethanol oxidation. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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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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Li D, Li X, Gong J. Catalytic Reforming of Oxygenates: State of the Art and Future Prospects. Chem Rev 2016; 116:11529-11653. [PMID: 27527927 DOI: 10.1021/acs.chemrev.6b00099] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This Review describes recent advances in the design, synthesis, reactivity, selectivity, structural, and electronic properties of the catalysts for reforming of a variety of oxygenates (e.g., from simple monoalcohols to higher polyols, then to sugars, phenols, and finally complicated mixtures like bio-oil). A comprehensive exploration of the structure-activity relationship in catalytic reforming of oxygenates is carried out, assisted by state-of-the-art characterization techniques and computational tools. Critical emphasis has been given on the mechanisms of these heterogeneous-catalyzed reactions and especially on the nature of the active catalytic sites and reaction pathways. Similarities and differences (reaction mechanisms, design and synthesis of catalysts, as well as catalytic systems) in the reforming process of these oxygenates will also be discussed. A critical overview is then provided regarding the challenges and opportunities for research in this area with a focus on the roles that systems of heterogeneous catalysis, reaction engineering, and materials science can play in the near future. This Review aims to present insights into the intrinsic mechanism involved in catalytic reforming and provides guidance to the development of novel catalysts and processes for the efficient utilization of oxygenates for energy and environmental purposes.
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Affiliation(s)
- Di Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, China
| | - Xinyu Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of 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 of Chemical Science and Engineering , Tianjin 300072, China
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Hydrogen Production by Ethanol Steam Reforming (ESR) over CeO2 Supported Transition Metal (Fe, Co, Ni, Cu) Catalysts: Insight into the Structure-Activity Relationship. Catalysts 2016. [DOI: 10.3390/catal6030039] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Structural Analysis of Rh–Pd/CeO2 Catalysts Under Reductive Conditions: An X-ray Investigation. Top Catal 2014. [DOI: 10.1007/s11244-014-0351-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sanchez-Sanchez MC, Navarro RM, Espartero I, Ismail AA, Al-Sayari SA, Fierro JLG. Role of Pt in the Activity and Stability of PtNi/CeO2–Al2O3 Catalysts in Ethanol Steam Reforming for H2 Production. Top Catal 2013. [DOI: 10.1007/s11244-013-0101-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Al-Shankiti I, Al-Otaibi F, Al-Salik Y, Idriss H. Solar Thermal Hydrogen Production from Water over Modified CeO2 Materials. Top Catal 2013. [DOI: 10.1007/s11244-013-0079-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Scott M, Nadeem A, Waterhouse G, Idriss H. Hydrogen Production from Ethanol. Comparing Thermal Catalytic Reactions to Photo-catalytic Reactions. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/opl.2011.1118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTHydrogen production from renewables such as bio-ethanol is one of the most promising processes for energy carriers in a sustainable way. In this work we review and compare two catalytic systems: one based on thermal activation over bimetallic catalysts (Rh-Pd/CeO2) and the other over photo-excited semiconductor catalysts (Au/TiO2 anatine, rutile and anatase/rutile). It is found that the hydrogen yield is far higher on the thermally activated catalysts (at 773K) when compared to that of the photo-exited catalysts (at room temperature); about 60 times. However, the photo-excited catalysts are a promising way to create a fully sustainable system for future applications if the complete removal of hydrogen atoms from water and ethanol are obtained at room temperature.
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Kaddouri A, Mazzocchia C. Comparative Study of the Physico-Chemical Properties of Nanocrystalline CuO–ZnO–Al2O3 Prepared from Different Precursors: Hydrogen Production by Vaporeforming of Bioethanol. Catal Letters 2009. [DOI: 10.1007/s10562-009-0056-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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De Oliveira-Vigier K, Abatzoglou N, Gitzhofer F. Dry-Reforming of Ethanol in the Presence of a 316 Stainless Steel Catalyst. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450830607] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Platon A, Roh HS, King DL, Wang Y. Deactivation Studies of Rh/Ce0.8Zr0.2O2 Catalysts in Low Temperature Ethanol Steam Reforming. Top Catal 2007. [DOI: 10.1007/s11244-007-9007-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Roh HS, Platon A, Wang Y, King DL. Catalyst deactivation and regeneration in low temperature ethanol steam reforming with Rh/CeO2–ZrO2 catalysts. Catal Letters 2006. [DOI: 10.1007/s10562-006-0082-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Roh HS, Wang Y, King DL, Platon A, Chin YH. Low Temperature and H2 Selective Catalysts for Ethanol Steam Reforming. Catal Letters 2006. [DOI: 10.1007/s10562-006-0021-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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