1
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Batool SS, Saleem R, Khan RRM, Saeed Z, Pervaiz M, Summer M. Enhancing photocatalytic performance of zirconia-based nanoparticles: A comprehensive review of factors, doping strategies, and mechanisms. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 2024; 178:108419. [DOI: 10.1016/j.mssp.2024.108419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
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2
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Tsiotsias A, Georgiadis AG, Charisiou ND, Hussien AGS, Dabbawala AA, Polychronopoulou K, Goula MA. Mid-temperature CO 2 Adsorption over Different Alkaline Sorbents Dispersed over Mesoporous Al 2O 3. ACS OMEGA 2024; 9:11305-11320. [PMID: 38496972 PMCID: PMC10938334 DOI: 10.1021/acsomega.3c07204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 03/19/2024]
Abstract
CO2 adsorbents comprising various alkaline sorption active phases supported on mesoporous Al2O3 were prepared. The materials were tested regarding their CO2 adsorption behavior in the mid-temperature range, i.e., around 300 °C, as well as characterized via XRD, N2 physisorption, CO2-TPD and TEM. It was found that the Na2O sorption active phase supported on Al2O3 (originated following NaNO3 impregnation) led to the highest CO2 adsorption capacity due to the presence of CO2-philic interfacial Al-O--Na+ sites, and the optimum active phase load was shown to be 12 wt % (0.22 Na/Al molar ratio). Additional adsorbents were prepared by dispersing Na2O over different metal oxide supports (ZrO2, TiO2, CeO2 and SiO2), showing an inferior performance than that of Na2O/Al2O3. The kinetics and thermodynamics of CO2 adsorption were also investigated at various temperatures, showing that CO2 adsorption over the best-performing Na2O/Al2O3 material is exothermic and follows the Avrami model, while tests under varying CO2 partial pressures revealed that the Langmuir isotherm best fits the adsorption data. Lastly, Na2O/Al2O3 was tested under multiple CO2 adsorption-desorption cycles at 300 and 500 °C, respectively. The material was found to maintain its CO2 adsorption capacity with no detrimental effects on its nanostructure, porosity and surface basic sites, thereby rendering it suitable as a reversible CO2 chemisorbent or as a support for the preparation of dual-function materials.
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Affiliation(s)
- Anastasios
I. Tsiotsias
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, Kozani GR-50100, Greece
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Amvrosios G. Georgiadis
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, Kozani GR-50100, Greece
| | - Nikolaos D. Charisiou
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, Kozani GR-50100, Greece
| | - Aseel G. S. Hussien
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Aasif A. Dabbawala
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Kyriaki Polychronopoulou
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Maria A. Goula
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, Kozani GR-50100, Greece
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3
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Khandelwal K, Dalai AK. Catalytic Supercritical Water Gasification of Canola Straw with Promoted and Supported Nickel-Based Catalysts. Molecules 2024; 29:911. [PMID: 38398661 PMCID: PMC10891835 DOI: 10.3390/molecules29040911] [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: 01/17/2024] [Revised: 02/13/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
Lignocellulosic biomass such as canola straw is produced as low-value residue from the canola processing industry. Its high cellulose and hemicellulose content makes it a suitable candidate for the production of hydrogen via supercritical water gasification. However, supercritical water gasification of lignocellulosic biomass such as canola straw suffers from low hydrogen yield, hydrogen selectivity, and conversion efficiencies. Cost-effective and sustainable catalysts with high catalytic activity for supercritical water gasification are increasingly becoming a focal point of interest. In this research study, novel wet-impregnated nickel-based catalysts supported on carbon-negative hydrochar obtained from hydrothermal liquefaction (HTL-HC) and hydrothermal carbonization (HTC-HC) of canola straw, along with other nickel-supported catalysts such as Ni/Al2O3, Ni/ZrO2, Ni/CNT, and Ni/AC, were synthesized for gasification of canola straw on previously optimized reaction conditions of 500 °C, 60 min, 10 wt%, and 23-25 MPa. The order of hydrogen yield for the six supports was (10.5 mmol/g) Ni/ZrO2 > (9.9 mmol/g) Ni/Al2O3 > (9.1 mmol/g) Ni/HTL-HC > (8.8 mmol/g) Ni/HTC-HC > (7.7 mmol/g) Ni/AC > (6.8 mmol/g) Ni/CNT, compared to 8.1 mmol/g for the non-catalytic run. The most suitable Ni/ZrO2 catalyst was further modified using promotors such as K, Zn, and Ce, and the performance of the promoted Ni/ZrO2 catalysts was evaluated. Ni-Ce/ZrO2 showed the highest hydrogen yield of 12.9 mmol/g, followed by 12.0 mmol/g for Ni-Zn/ZrO2 and 11.6 mmol/g for Ni-K/ZrO2. The most suitable Ni-Ce/ZrO2 catalysts also demonstrated high stability over their repeated use. The superior performance of the Ni-Ce/ZrO2 was due to its high nickel dispersion, resilience to sintering, high thermal stability, and oxygen storage capabilities to minimize coke deposition.
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Affiliation(s)
| | - Ajay K. Dalai
- Catalysis and Chemical Reaction Engineering Laboratories, Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada;
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4
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Zandifar A, Esmaeilzadeh F, Rodríguez-Mirasol J. Hydrogen-rich gas production via supercritical water gasification (SCWG) of oily sludge over waste tire-derived activated carbon impregnated with Ni: Characterization and optimization of activated carbon production. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123078. [PMID: 38052340 DOI: 10.1016/j.envpol.2023.123078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/15/2023] [Accepted: 11/29/2023] [Indexed: 12/07/2023]
Abstract
In this study, the production of activated carbon (AC) through the chemical activation of waste tire (WT) using H3PO4 and KOH for H2 production by SCWG of oily sludge (OS) donated by Persian Gulf Star Oil Company was investigated. H3PO4 was the best activating agent based on some pretests results, and then the synthesis of AC was optimized using Response Surface Methodology. Based on BET surface area of synthesized ACs, thirty combinations of the four variables namely; activation temperature (350-550 °C); activation time (1-4 h); H3PO4 to WT ratio (1-3 w.w-1); and H3PO4 concentration (20-40 wt%) were optimized. CHNS, TGA, FE-SEM, and EDS-mapping analyses were used to characterize the AC and catalyst synthesized in optimum condition (activation temperature: 450 °C; activation time: 2.5 h; H3PO4 to WT ratio: 2 w.w-1; and H3PO4 concentration: 40 wt%), which presented a surface area of 170 m2 g-1. Finally, Ni was impregnated on the optimized AC with different loadings (5-15 wt%) to evaluate its performance in H2 production by SCWG of OS. Although H2 yield in catalytic experiments was higher than that observed in non-catalytic experiment, results showed that the maximum H2 selectivity was 66% in SCWG of OS using AC impregnated with 10 wt% Ni.
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Affiliation(s)
- Ali Zandifar
- Chemical Engineering Department, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran.
| | - Feridun Esmaeilzadeh
- Chemical Engineering Department, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran; Enhanced Oil and Gas Recovery Institute, Advanced Research Group for Gas Condensate Recovery, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran.
| | - José Rodríguez-Mirasol
- Chemical Engineering Department, University of Málaga, Campus de Teatinos s/n, 29010, Málaga, Spain
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Al-Fatesh AS, Kaydouh MN, Ahmed H, Ibrahim AA, Alotibi MF, Osman AI, El Hassan N. Sr Promoted Ni/W-Zr Catalysts for Highly Efficient CO 2 Methanation: Unveiling the Role of Surface Basicity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:17723-17732. [PMID: 38029289 PMCID: PMC10720459 DOI: 10.1021/acs.langmuir.3c02304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/01/2023]
Abstract
This study explores the employment of CO2 methanation for carbon dioxide utilization and global warming mitigation. For the first time, in this work, we combine the interesting properties of the WO3-ZrO2 support and the benefits of Sr to improve the performance of Ni-based catalysts in this reaction. Sr loading on 5Ni/W-Zr samples is increased to 3 wt %, resulting in improved surface basicity through strong basic site formation. After 300 min, the 5Ni + 3Sr/W-Zr catalyst exhibits high activity and stability, achieving 90% CO2 conversion and 82% CH4 yield compared to 62 and 57% on 5Ni/W-Zr. Limited sintering and absence of carbon deposits are confirmed by temperature-programmed oxidation, XRD, Raman, and TEM analyses at 350 °C for 300 min. Sr promotion creates additional CO2 adsorption and conversion sites, enhancing the catalytic performance.
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Affiliation(s)
- Ahmed S. Al-Fatesh
- Chemical
Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Marie-Nour Kaydouh
- Petroleum
Engineering Program, School of Engineering, Lebanese American University, P.O. Box 36, Byblos 1102-2801, Lebanon
| | - Hamid Ahmed
- Chemical
Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Ahmed A. Ibrahim
- Chemical
Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Mohammed F. Alotibi
- Institute
of Refining and Petrochemicals Technologies, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Ahmed I. Osman
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, Belfast BT9 5AG Northern Ireland, U.K.
| | - Nissrine El Hassan
- Petroleum
Engineering Program, School of Engineering, Lebanese American University, P.O. Box 36, Byblos 1102-2801, Lebanon
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6
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Harkou E, Hafeez S, Adamou P, Zhang Z, Tsiotsias AI, Charisiou ND, Goula MA, Al-Salem SM, Manos G, Constantinou A. Different reactor configurations for enhancement of CO 2 methanation. ENVIRONMENTAL RESEARCH 2023; 236:116760. [PMID: 37507039 DOI: 10.1016/j.envres.2023.116760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/16/2023] [Accepted: 07/26/2023] [Indexed: 07/30/2023]
Abstract
Greenhouse gas emissions are a massive concern for scientists to minimize the effect of global warming in the environment. In this study, packed bed, coated wall, and membrane reactors were investigated using three novel nickel catalysts for the methanation of CO2. CFD modelling methodologies were implemented to develop 2D models. The validity of the model was investigated in a previous study where experimental and simulated results in a packed bed reactor were in a good agreement. It was observed that the coated wall reactor had poorer performance compared to the packed bed, approximately 30% difference between the results, as the residence time of the former was lower. In addition, two membrane configurations were proposed, including a membrane packed bed and membrane coated wall reactor. Additional studies were performed in the coated wall reactor revealing that lower flow rates lead to higher conversion values. As for the bed thickness the optimum layer was found to be 1 mm. In both membrane reactor configurations, the effect of the thickness of M1 membrane, which indicates the membrane for the removal of H2O, didn't show difference while the reduction of the thickness of M2 membrane, which indicates the membrane for the removal of CO2, H2 and H2O, showed better results in terms of conversion.
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Affiliation(s)
- Eleana Harkou
- Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus
| | - Sanaa Hafeez
- School of Engineering and Materials Science, Queen Mary University of London, London, E14NS, UK
| | - Panayiota Adamou
- Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus
| | - Zhien Zhang
- WilliamG. Lowrie Department of Chemical and Biomolecular Engineerig, The Ohio State University Columbus, OH, 43210, USA
| | - Anastasios I Tsiotsias
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece
| | - Nikolaos D Charisiou
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece
| | - Maria A Goula
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece
| | - S M Al-Salem
- Environmental & Life Sciences Research Centre, Kuwait Institute for Scientific Research, Kuwait
| | - George Manos
- Department of Chemical Engineering, University College London, London, WCIE7JE, UK
| | - Achilleas Constantinou
- Department of Chemical Engineering, Cyprus University of Technology, 57 Corner of Athinon and Anexartisias, Limassol, 3036, Cyprus.
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7
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Tsiotsias AI, Georgiadis AG, Charisiou ND, Goula MA. CO 2 Physisorption over an Industrial Molecular Sieve Zeolite: An Experimental and Theoretical Approach. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6656. [PMID: 37895638 PMCID: PMC10608334 DOI: 10.3390/ma16206656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
The present work studies the adsorption of CO2 using a zeolitic industrial molecular sieve (IMS) with a high surface area. The effect of the CO2 feed concentration and the adsorption temperature in conjunction with multiple adsorption-desorption cycles was experimentally investigated. To assess the validity of the experimental results, theoretical calculations based on well-established equations were employed and the values of equilibrium, kinetic, and thermodynamic parameters are presented. Three additional column kinetic models were applied to the data obtained experimentally, in order to predict the breakthrough curves and thus facilitate process design. Results showed a negative correlation between temperature and adsorption capacity, indicating that physical adsorption takes place. Theoretical calculations revealed that the Langmuir isotherm, the Bangham kinetic model (i.e., pore diffusion is the rate-determining step), and the Thomas and Yoon-Nelson models were suitable to describe the CO2 adsorption process by the IMS. The IMS adsorbent material maintained its high CO2 adsorption capacity (>200 mg g-1) after multiple adsorption-desorption cycles, showing excellent regenerability and requiring only a mild desorption treatment (200 °C for 15 min) for regeneration.
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Affiliation(s)
| | | | | | - Maria A. Goula
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece
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8
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The Efficiency of Carbon Conversion and Hydrogen Production from Tar Steam Reforming of Biomass Using Ni-Based Catalysts with Alkaline Earth Promoters. Catalysts 2023. [DOI: 10.3390/catal13030472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
H2 production can be used as a clean and renewable energy source for various applications, including fuel cells, internal combustion engines, and chemical production. Using nickel-based catalysts for steam reforming biomass tar presents challenges related to catalyst deactivation, poisoning, heterogeneous composition, high process temperatures, and gas impurities. To overcome these challenges, adopting a nickel-based catalyst with selected oxide support and MgO and CaO promoter is a promising approach for improving the efficiency and sustainability of steam reforming for hydrogen production. The majority of studies conducted to date have focused on the steam reforming of particular tar compounds, most commonly benzene, phenol, toluene, or naphthalene, over a range of support catalysts. However, the actual biomass tar composition is complex, and each component impacts how well steam reforming works. In this research, a multi-compound biomass tar model including phenol, toluene, naphthalene, and pyrene underwent a steam reforming process. Various types with 10 wt.% of nickel-based catalysts were generated by the co-impregnation technique, which included 90 wt.% different oxide supports (Al2O3, La2O3, and ZrO2) and 10 wt.% of combination alkaline oxide earth promoters (MgO and CaO). Thermogravimetric analysis, Brunauer–Emmett–Teller (BET) method, N2 physisorption, temperature-programmed reduction (H2-TPR), temperature-programmed desorption (CO2-TPD), and X-ray diffraction (XRD) of ni-based catalyst characterized physiochemical properties of the prepared catalyst. The reaction temperature used for steam reforming was 800 °C, an S/C ratio of 1, and a GHSV of 13,500 h−1. Ni/La2O3/MgO/CaO (NiLaMgCa) produced the most carbon to-gas conversion (86.27 mol%) and H2 yield (51.58 mol%) after 5 h of reaction compared to other catalysts tested in this study. Additionally, the filamentous carbon coke deposited on the spent catalyst of NiLaMgCa does not impact the catalyst activity. NiLaMgCa was the best catalyst compared to other catalysts investigated, exhibiting a stable and high catalytic performance in the steam reforming of gasified biomass tar. In conclusion, this study presents a novel approach by adding a combination of MgO and CaO promoters to a ni-based catalyst with various oxide supports, strengthening the metal-support interaction and improving the acid-base balance of the catalyst surface. The mesoporous structure and active phase (metallic Ni) were successfully developed. This can lead to an increase in the conversion of tar to H2 yield gas and a decrease in the production of undesired byproducts, such as CH4 and CO.
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9
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Visser NL, Verschoor JC, Smulders LC, Mattarozzi F, Morgan DJ, Meeldijk JD, van der Hoeven JE, Stewart JA, Vandegehuchte BD, de Jongh PE. Influence of Carbon Support Surface Modification on the Performance of Nickel Catalysts in Carbon Dioxide Hydrogenation. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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10
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Merkouri LP, Martín-Espejo JL, Bobadilla LF, Odriozola JA, Duyar MS, Reina TR. Flexible NiRu Systems for CO 2 Methanation: From Efficient Catalysts to Advanced Dual-Function Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13030506. [PMID: 36770467 PMCID: PMC9921773 DOI: 10.3390/nano13030506] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 06/09/2023]
Abstract
CO2 emissions in the atmosphere have been increasing rapidly in recent years, causing global warming. CO2 methanation reaction is deemed to be a way to combat these emissions by converting CO2 into synthetic natural gas, i.e., CH4. NiRu/CeAl and NiRu/CeZr both demonstrated favourable activity for CO2 methanation, with NiRu/CeAl approaching equilibrium conversion at 350 °C with 100% CH4 selectivity. Its stability under high space velocity (400 L·g-1·h-1) was also commendable. By adding an adsorbent, potassium, the CO2 adsorption capability of NiRu/CeAl was boosted, allowing it to function as a dual-function material (DFM) for integrated CO2 capture and utilisation, producing 0.264 mol of CH4/kg of sample from captured CO2. Furthermore, time-resolved operando DRIFTS-MS measurements were performed to gain insights into the process mechanism. The obtained results demonstrate that CO2 was captured on basic sites and was also dissociated on metallic sites in such a way that during the reduction step, methane was produced by two different pathways. This study reveals that by adding an adsorbent to the formulation of an effective NiRu methanation catalyst, advanced dual-function materials can be designed.
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Affiliation(s)
| | - Juan Luis Martín-Espejo
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, Spain
| | - Luis Francisco Bobadilla
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, Spain
| | - José Antonio Odriozola
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, UK
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, Spain
| | - Melis Seher Duyar
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, UK
| | - Tomas Ramirez Reina
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, UK
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, Spain
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Khoshroo G, Sápi A, Szenti I, Efremova A, Bali H, B.Ábrahámné K, Erdőhelyi A, Kukovecz Á, Kónya Z. Pure Ni-Based and Trimetallic Ni-Co-Fe Catalysts for the Dry Reforming of Methane: Effect of K Promoter and the Calcination Temperature. Catal Letters 2022. [DOI: 10.1007/s10562-022-04203-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Wu J, Ye R, Xu DJ, Wan L, Reina TR, Sun H, Ni Y, Zhou ZF, Deng X. Emerging natural and tailored perovskite-type mixed oxides–based catalysts for CO2 conversions. Front Chem 2022; 10:961355. [PMID: 35991607 PMCID: PMC9388861 DOI: 10.3389/fchem.2022.961355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/01/2022] [Indexed: 11/13/2022] Open
Abstract
The rapid economic and societal development have led to unprecedented energy demand and consumption resulting in the harmful emission of pollutants. Hence, the conversion of greenhouse gases into valuable chemicals and fuels has become an urgent challenge for the scientific community. In recent decades, perovskite-type mixed oxide-based catalysts have attracted significant attention as efficient CO2 conversion catalysts due to the characteristics of both reversible oxygen storage capacity and stable structure compared to traditional oxide-supported catalysts. In this review, we hand over a comprehensive overview of the research for CO2 conversion by these emerging perovskite-type mixed oxide-based catalysts. Three main CO2 conversions, namely reverse water gas shift reaction, CO2 methanation, and CO2 reforming of methane have been introduced over perovskite-type mixed oxide-based catalysts and their reaction mechanisms. Different approaches for promoting activity and resisting carbon deposition have also been discussed, involving increased oxygen vacancies, enhanced dispersion of active metal, and fine-tuning strong metal-support interactions. Finally, the current challenges are mooted, and we have proposed future research prospects in this field to inspire more sensational breakthroughs in the material and environment fields.
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Affiliation(s)
- Juan Wu
- Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Runping Ye
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, Institute of Applied Chemistry, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
- *Correspondence: Runping Ye, ; Zhang-Feng Zhou, ; Xiaonan Deng,
| | - Dong-Jie Xu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
| | - Lingzhong Wan
- Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Tomas Ramirez Reina
- Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain
| | - Hui Sun
- Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Ying Ni
- Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Zhang-Feng Zhou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- *Correspondence: Runping Ye, ; Zhang-Feng Zhou, ; Xiaonan Deng,
| | - Xiaonan Deng
- Institute of Cotton, Anhui Academy of Agricultural Sciences, Hefei, China
- *Correspondence: Runping Ye, ; Zhang-Feng Zhou, ; Xiaonan Deng,
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13
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Bermejo-López A, Pereda-Ayo B, Onrubia-Calvo JA, González-Marcos JA, González-Velasco JR. Tuning basicity of dual function materials widens operation temperature window for efficient CO2 adsorption and hydrogenation to CH4. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.101922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Richter NF, Risse T. Defects of thin CaO(001) on Mo(001): an EPR spectroscopic perspective. Phys Chem Chem Phys 2022; 24:7732-7738. [PMID: 35293416 DOI: 10.1039/d2cp00389a] [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
Paramagnetic defects of thin CaO(001) films grown on Mo(001) are characterized using electron paramagnetic resonance (EPR) spectroscopy under ultrahigh vacuum conditions. A variety of paramagnetic centers located in the volume of the films are identified whose speciation as well as relative abundance was found to depend on the growth rate of the films. Pristine films prepared at a lower growth rate exhibited a larger number and a different speciation of paramagnetic defects than films grown at a higher rate. Annealing of the films to 1030 K, which improves their long-range order, results in quenching of most of the paramagnetic species observed for the pristine film; however, films prepared at a lower growth rate exhibit new paramagnetic signals upon annealing, which are absent in films prepared at a higher growth rate. The signals can be assigned to paramagnetic Mo ions previously shown to diffuse into these films. These results indicate that the amount and speciation of the transition metal ions depend on the preparation conditions which in turn can also affect the surface chemistry of these systems.
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Affiliation(s)
- Nina F Richter
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany.
| | - Thomas Risse
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany.
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15
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Abstract
Biogas, with its high carbon dioxide content (30–50 vol%), is an attractive feed for catalytic methanation with green hydrogen, and is suitable for establishing a closed carbon cycle with methane as energy carrier. The most important questions for direct biogas methanation are how the high methane content influences the methanation reaction and overall efficiency on one hand, and to what extent the methanation catalysts can be made more resistant to various sulfur-containing compounds in biogas on the other hand. Ni-based catalysts are the most favored for economic reasons. The interplay of active compounds, supports, and promoters is discussed regarding the potential for improving sulfur resistance. Several strategies are addressed and experimental studies are evaluated, to identify catalysts which might be suitable for these challenges. As several catalyst functionalities must be combined, materials with two active metals and binary oxide support seem to be the best approach to technically applicable solutions. The high methane content in biogas appears to have a measurable impact on equilibrium and therefore CO2 conversion. Depending on the initial CH4/CO2 ratio, this might lead to a product with higher methane content, and, after work-up, to a drop in-option for existing natural gas grids.
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16
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Promotion of Ru or Ni on Alumina Catalysts with a Basic Metal for CO 2 Hydrogenation: Effect of the Type of Metal (Na, K, Ba). NANOMATERIALS 2022; 12:nano12071052. [PMID: 35407170 PMCID: PMC9000749 DOI: 10.3390/nano12071052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 02/04/2023]
Abstract
Ru and Ni on alumina catalysts have been promoted with a 10 wt% of alkali metal (K or Na) or alkaline earth metal (Ba) and tested in CO2 methanation. For the catalyst consisting of Ni and Ba, the variation of Ba loading while keeping Ni loading constant was studied. The promotion in terms of enhanced CH4 yield was found only for the addition of barium to 15 wt% Ni/Al2O3. In contrast, K and Na addition increased the selectivity to CO while decreasing conversion. For the Ru-based catalyst series, no enhancement in conversion or CH4 yield was attained by any of the alkaline metals. CO2 temperature-programed desorption (CO2-TPD) revealed that the amount of chemisorbed CO2 increased significantly after the addition of the base metal. The reactivity of COx ad-species for each catalyst was assessed by temperature-programed surface reaction (TPSR). The characterization revealed that the performance in the Sabatier reaction was a result of the interplay between the amount of chemisorbed CO2 and the reactivity of the COx ad-species, which was maximized for the (10%Ba)15%Ni/Al2O3 catalyst.
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17
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State-of-art modifications of heterogeneous catalysts for CO2 methanation - active sites, surface basicity and oxygen defects. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Liu W, Cai Y, Luo M, Yang Y, Li P. Potential Application of Alkaline Metal Nitrate-Promoted Magnesium-Based Materials in the Integrated CO2 Capture and Methanation Process. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Liu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- National Engineering Research Center for Integrated Utilization of Salt Lake, East China University of Science and Technology, Shanghai 200237, China
| | - Yifan Cai
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- National Engineering Research Center for Integrated Utilization of Salt Lake, East China University of Science and Technology, Shanghai 200237, China
| | - Mengjie Luo
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- National Engineering Research Center for Integrated Utilization of Salt Lake, East China University of Science and Technology, Shanghai 200237, China
| | - Ying Yang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- National Engineering Research Center for Integrated Utilization of Salt Lake, East China University of Science and Technology, Shanghai 200237, China
| | - Ping Li
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- National Engineering Research Center for Integrated Utilization of Salt Lake, East China University of Science and Technology, Shanghai 200237, China
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19
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Park SJ, Wang X, Ball MR, Proano L, Wu Z, Jones CW. CO 2 methanation reaction pathways over unpromoted and NaNO 3-promoted Ru/Al 2O 3 catalysts. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00515h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic CO2 sorbents, materials that adsorb and pre-concentrate CO2 on the catalyst surface prior to subsequent conversion, are becoming important materials in CO2 capture and utilization.
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Affiliation(s)
- Sang Jae Park
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA 30332, USA
| | - Xiang Wang
- Chemical Science Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Madelyn R. Ball
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA 30332, USA
| | - Laura Proano
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA 30332, USA
| | - Zili Wu
- Chemical Science Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Christopher W. Jones
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, GA 30332, USA
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20
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Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations. Catalysts 2021. [DOI: 10.3390/catal11121526] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The present review focuses on the production of renewable hydrogen through the catalytic steam reforming of bio-oil, the liquid product of the fast pyrolysis of biomass. Although in theory the process is capable of producing high yields of hydrogen, in practice, certain technological issues require radical improvements before its commercialization. Herein, we illustrate the fundamental knowledge behind the technology of the steam reforming of bio-oil and critically discuss the major factors influencing the reforming process such as the feedstock composition, the reactor design, the reaction temperature and pressure, the steam to carbon ratio and the hour space velocity. We also emphasize the latest research for the best suited reforming catalysts among the specific groups of noble metal, transition metal, bimetallic and perovskite type catalysts. The effect of the catalyst preparation method and the technological obstacle of catalytic deactivation due to coke deposition, metal sintering, metal oxidation and sulfur poisoning are addressed. Finally, various novel modified steam reforming techniques which are under development are discussed, such as the in-line two-stage pyrolysis and steam reforming, the sorption enhanced steam reforming (SESR) and the chemical looping steam reforming (CLSR). Moreover, we argue that while the majority of research studies examine hydrogen generation using different model compounds, much work must be done to optimally treat the raw or aqueous bio-oil mixtures for efficient practical use. Moreover, further research is also required on the reaction mechanisms and kinetics of the process, as these have not yet been fully understood.
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21
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Gandara-Loe J, Portillo E, Odriozola JA, Reina TR, Pastor-Pérez L. K-Promoted Ni-Based Catalysts for Gas-Phase CO 2 Conversion: Catalysts Design and Process Modelling Validation. Front Chem 2021; 9:785571. [PMID: 34869232 PMCID: PMC8636742 DOI: 10.3389/fchem.2021.785571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 10/27/2021] [Indexed: 11/24/2022] Open
Abstract
The exponential growth of greenhouse gas emissions and their associated climate change problems have motivated the development of strategies to reduce CO2 levels via CO2 capture and conversion. Reverse water gas shift (RWGS) reaction has been targeted as a promising pathway to convert CO2 into syngas which is the primary reactive in several reactions to obtain high-value chemicals. Among the different catalysts reported for RWGS, the nickel-based catalyst has been proposed as an alternative to the expensive noble metal catalyst. However, Ni-based catalysts tend to be less active in RWGS reaction conditions due to preference to CO2 methanation reaction and to the sintering and coke formation. Due to this, the aim of this work is to study the effect of the potassium (K) in Ni/CeO2 catalyst seeking the optimal catalyst for low-temperature RWGS reaction. We synthesised Ni-based catalyst with different amounts of K:Ni ratio (0.5:10, 1:10, and 2:10) and fully characterised using different physicochemical techniques where was observed the modification on the surface characteristics as a function of the amount of K. Furthermore, it was observed an improvement in the CO selectivity at a lower temperature as a result of the K-Ni-support interactions but also a decrease on the CO2 conversion. The 1K catalyst presented the best compromise between CO2 conversion, suppression of CO2 methanation and enhancing CO selectivity. Finally, the experimental results were contrasted with the trends obtained from the thermodynamics process modelling observing that the result follows in good agreement with the modelling trends giving evidence of the promising behaviour of the designed catalysts in CO2 high-scale units.
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Affiliation(s)
- J Gandara-Loe
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain
| | - E Portillo
- Chemical and Environmental Engineering Department, School of Engineering, University of Seville, Sevilla, Spain
| | - J A Odriozola
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain.,Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
| | - T R Reina
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain.,Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
| | - L Pastor-Pérez
- Department of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, Seville, Spain.,Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
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22
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Alkali and Alkali-Earth Metals Incorporation to Ni/USY Catalysts for CO2 Methanation: The Effect of the Metal Nature. Processes (Basel) 2021. [DOI: 10.3390/pr9101846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
CO2 methanation is typically carried out using Ni-supported catalysts containing promoters such as alkali or alkali-earth metals to improve their properties. In this work, bimetallic Ni-based USY zeolite catalysts containing alkali (Li, K and Cs) and alkali-earth (Mg, Ca) metal compounds were prepared using the same conditions (15 wt% of metals; co-impregnation), characterized by N2 sorption, XRD, TGA, CO2 adsorption–desorption, DRS UV-Vis and H2-TPR, and finally applied in CO2 methanation reaction (86,100 mL h−1 g−1, PCO2 = 0.16 bar, H2:CO2 = 4:1). For each group, the effects of the second metal nature on the properties and performances were assessed. Alkali metals incorporation induced considerably low catalytic performances (CH4 yields < 26%), attributed to their negative impact on zeolite structure preservation. On the contrary, alkali-earth metal-containing catalysts exhibited lower structural damage. However, the formation of Ni-Mg mixed oxides in Ni-Mg/USY catalyst and CaCO3 during the reaction in Ni-Ca/USY sample could explain their performances, similar or lower than those obtained for Ni/USY catalyst. Among the studied metals, calcium was identified as the most interesting (CH4 yield of 65% at 415 °C), which was ascribed to the slight improvement of the Ni0 dispersion.
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23
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Abstract
CO2 methanation was studied over monometallic catalyst, i.e., Ni, Fe and Co; on CeO2-Cr2O3 support. The catalysts were prepared using one-pot hydrolysis of mixed metal nitrates and ammonium carbonate. Physicochemical properties of the pre- and post-exposure catalysts were characterized by X-Ray Powder Diffraction (XRD), Hydrogen Temperature Programmed Reduction (H2-TPR), and Field Emission Scanning Electron Microscope (FE-SEM). The screening of three dopants over CeO2-Cr2O3 for CO2 methanation was conducted in a milli-packed bed reactor. Ni-based catalyst was proven to be the most effective catalyst among all. Thus, a group of NiO/CeO2-Cr2O3 catalysts with Ni loading was investigated further. 40 % NiO/CeO2-Cr2O3 exhibited the highest CO2 conversion of 97.67% and CH4 selectivity of 100% at 290 °C. The catalytic stability of NiO/CeO2-Cr2O3 was tested towards the CO2 methanation reaction over 50 h of time-on-stream experiment, showing a good stability in term of catalytic activity.
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24
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25
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Dunstan MT, Donat F, Bork AH, Grey CP, Müller CR. CO 2 Capture at Medium to High Temperature Using Solid Oxide-Based Sorbents: Fundamental Aspects, Mechanistic Insights, and Recent Advances. Chem Rev 2021; 121:12681-12745. [PMID: 34351127 DOI: 10.1021/acs.chemrev.1c00100] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbon dioxide capture and mitigation form a key part of the technological response to combat climate change and reduce CO2 emissions. Solid materials capable of reversibly absorbing CO2 have been the focus of intense research for the past two decades, with promising stability and low energy costs to implement and operate compared to the more widely used liquid amines. In this review, we explore the fundamental aspects underpinning solid CO2 sorbents based on alkali and alkaline earth metal oxides operating at medium to high temperature: how their structure, chemical composition, and morphology impact their performance and long-term use. Various optimization strategies are outlined to improve upon the most promising materials, and we combine recent advances across disparate scientific disciplines, including materials discovery, synthesis, and in situ characterization, to present a coherent understanding of the mechanisms of CO2 absorption both at surfaces and within solid materials.
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Affiliation(s)
- Matthew T Dunstan
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Felix Donat
- Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, 8092 Zürich, Switzerland
| | - Alexander H Bork
- Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, 8092 Zürich, Switzerland
| | - Clare P Grey
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Christoph R Müller
- Laboratory of Energy Science and Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, 8092 Zürich, Switzerland
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26
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Abstract
The rapid increase in anthropogenic greenhouse gas concentrations in the last several decades means that the effects of climate change are fast becoming the familiar horsemen of a planetary apocalypse. Catalysis, one of the pillars of the chemical and petrochemical industries, will play a critical role in the effort to reduce the flow of greenhouse gases into the atmosphere. This Special Issue is timely, as it provides a collection of high-quality manuscripts in a diverse range of topics, which include the production of green hydrogen via water electrolysis, the steam reforming of ethanol, propane or glycerol, the dry reforming of methane, and the autothermal reforming of diesel surrogate fuel. The topic of the transformation of biomass waste to chemicals is also well represented as is the tackling of CO2 emissions via novel utilization technologies. The Editors are grateful to all authors for their valuable contributions and confident that this Special Issue will prove valuable to scholars, university professors and students alike.
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27
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Stahl J, Ilsemann J, Pokhrel S, Schowalter M, Tessarek C, Rosenauer A, Eickhoff M, Bäumer M, Mädler L. Comparing Co‐catalytic Effects of ZrO
x
, SmO
x
, and Pt on CO
x
Methanation over Co‐based Catalysts Prepared by Double Flame Spray Pyrolysis. ChemCatChem 2021. [DOI: 10.1002/cctc.202001998] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jakob Stahl
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
| | - Jan Ilsemann
- Institute of Applied and Physical Chemistry and Center for Environmental Research (UFT) University of Bremen Leobener Straße 6 28359 Bremen Germany
| | - Suman Pokhrel
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Straße 3 28359 Bremen Germany
| | - Marco Schowalter
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
| | - Christian Tessarek
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
| | - Andreas Rosenauer
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Martin Eickhoff
- Institute of Solid State Physics University of Bremen Otto-Hahn-Allee 1 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Marcus Bäumer
- Institute of Applied and Physical Chemistry and Center for Environmental Research (UFT) University of Bremen Leobener Straße 6 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
| | - Lutz Mädler
- Faculty of Production Engineering University of Bremen Badgasteiner Straße 1 28359 Bremen Germany
- Leibniz Institute for Materials Engineering IWT Badgasteiner Straße 3 28359 Bremen Germany
- MAPEX Center for Materials and Processes University of Bremen Postfach 330 440 Germany
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28
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Georgiadis A, Charisiou ND, Gaber S, Polychronopoulou K, Yentekakis IV, Goula MA. Adsorption of Hydrogen Sulfide at Low Temperatures Using an Industrial Molecular Sieve: An Experimental and Theoretical Study. ACS OMEGA 2021; 6:14774-14787. [PMID: 34151059 PMCID: PMC8209825 DOI: 10.1021/acsomega.0c06157] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/03/2021] [Indexed: 06/13/2023]
Abstract
In the work presented herein, a joint experimental and theoretical approach has been carried out to obtain an insight into the desulfurization performance of an industrial molecular sieve (IMS), resembling a zeolitic structure with a morphology of cubic crystallites and a high surface area of 590 m2 g-1, with a view to removing H2S from biogas. The impact of temperature, H2S inlet concentration, gas matrix, and regeneration cycles on the desulfurization performance of the IMS was thoroughly probed. The adsorption equilibrium, sorption kinetics, and thermodynamics were also examined. Experimental results showed that the relationship between H2S uptake and temperature increase was inversely proportional. Higher H2S initial concentrations led to lower breakpoints. The presence of CO2 negatively affected the desulfurization performance. The IMS was fully regenerated after 15 adsorption/desorption cycles. Theoretical studies revealed that the Langmuir isotherm better described the sorption behavior, pore diffusion was the controlling step of the process (Bangham model), and that the activation energy was 42.7 kJ mol-1 (physisorption). Finally, the thermodynamic studies confirmed that physisorption predominated.
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Affiliation(s)
- Amvrosios
G. Georgiadis
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, GR-50100 Koila, Greece
| | - Nikolaos D. Charisiou
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, GR-50100 Koila, Greece
| | - Safa Gaber
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, Abu Dhabi, P.O. Box 127788, UAE
| | - Kyriaki Polychronopoulou
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, Abu Dhabi, P.O. Box 127788, UAE
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, Abu Dhabi, P.O. Box 127788, UAE
| | - Ioannis V. Yentekakis
- Laboratory
of Physical Chemistry & Chemical Processes, School of Environmental Engineering, Technical University of Crete, GR-73100 Chania, Greece
| | - Maria A. Goula
- Laboratory
of Alternative Fuels and Environmental Catalysis (LAFEC), Department
of Chemical Engineering, University of Western
Macedonia, GR-50100 Koila, Greece
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29
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Porta A, Matarrese R, Visconti CG, Castoldi L, Lietti L. Storage Material Effects on the Performance of Ru-Based CO2 Capture and Methanation Dual Functioning Materials. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05898] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Alessandro Porta
- Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano, 20156, Italy
| | - Roberto Matarrese
- Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano, 20156, Italy
| | - Carlo Giorgio Visconti
- Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano, 20156, Italy
| | - Lidia Castoldi
- Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano, 20156, Italy
| | - Luca Lietti
- Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano, 20156, Italy
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30
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Effect of the Addition of Alkaline Earth and Lanthanide Metals for the Modification of the Alumina Support in Ni and Ru Catalysts in CO2 Methanation. Catalysts 2021. [DOI: 10.3390/catal11030353] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In order to reduce greenhouse gas emissions, which are reaching alarming levels in the atmosphere, capture, recovery, and transformation of carbon dioxide emitted to methane is considered a potentially profitable process. This transformation, known as methanation, is a catalytic reaction that mainly uses catalysts based on noble metals such as Ru and, although with less efficiency, on transition metals such as Ni. In order to improve the efficiency of these conventional catalysts, the effect of adding alkaline earth metals (Ba, Ca, or Mg at 10 wt%) and lanthanides (La or Ce at 14 wt%) to nickel (13 wt%), ruthenium (1 wt%), or both-based catalysts has been studied at temperatures between 498 and 773 K and 10 bar pressure. The deactivation resistance in presence of H2S was also monitored. The incorporation of La into the catalyst produces interactions between active metal Ni, Ru, or Ru-Ni and the alumina support, as determined by the characterization. This fact results in an improvement in the catalytic activity of the 13Ni/Al2O3 catalyst, which achieves a methane yield of 82% at 680 K for 13Ni/14La-Al2O3, in addition to an increase in H2S deactivation resistance. Furthermore, 89% was achieved for 1Ru-13Ni/14La-Al2O3 at 651 K, but it showed to be more vulnerable to H2S presence.
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31
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Effect of alkali (Cs) doping on the surface chemistry and CO2 hydrogenation performance of CuO/CeO2 catalysts. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2020.101408] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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32
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Tsiotsias AI, Charisiou ND, Yentekakis IV, Goula MA. Bimetallic Ni-Based Catalysts for CO 2 Methanation: A Review. NANOMATERIALS 2020; 11:nano11010028. [PMID: 33374436 PMCID: PMC7824481 DOI: 10.3390/nano11010028] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 01/25/2023]
Abstract
CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition metals, as well as Ru and Rh, among the noble metals, have been known to be among the most active methanation catalysts, with Ni being favoured due to its low cost and high natural abundance. However, insufficient low-temperature activity, low dispersion and reducibility, as well as nanoparticle sintering are some of the main drawbacks when using Ni-based catalysts. Such problems can be partly overcome via the introduction of a second transition metal (e.g., Fe, Co) or a noble metal (e.g., Ru, Rh, Pt, Pd and Re) in Ni-based catalysts. Through Ni-M alloy formation, or the intricate synergy between two adjacent metallic phases, new high-performing and low-cost methanation catalysts can be obtained. This review summarizes and critically discusses recent progress made in the field of bimetallic Ni-M (M = Fe, Co, Cu, Ru, Rh, Pt, Pd, Re)-based catalyst development for the CO2 methanation reaction.
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Affiliation(s)
- Anastasios I. Tsiotsias
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100 Koila, Greece; (A.I.T.); (N.D.C.)
| | - Nikolaos D. Charisiou
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100 Koila, Greece; (A.I.T.); (N.D.C.)
| | - Ioannis V. Yentekakis
- Laboratory of Physical Chemistry & Chemical Processes, School of Environmental Engineering, Technical University of Crete, GR-73100 Chania, Greece;
| | - Maria A. Goula
- Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100 Koila, Greece; (A.I.T.); (N.D.C.)
- Correspondence: ; Tel.: +30-246-106-8296
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33
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Promising Catalytic Systems for CO2 Hydrogenation into CH4: A Review of Recent Studies. Processes (Basel) 2020. [DOI: 10.3390/pr8121646] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The increasing utilization of renewable sources for electricity production turns CO2 methanation into a key process in the future energy context, as this reaction allows storing the temporary renewable electricity surplus in the natural gas network (Power-to-Gas). This kind of chemical reaction requires the use of a catalyst and thus it has gained the attention of many researchers thriving to achieve active, selective and stable materials in a remarkable number of studies. The existing papers published in literature in the past few years about CO2 methanation tackled the catalysts composition and their related performances and mechanisms, which served as a basis for researchers to further extend their in-depth investigations in the reported systems. In summary, the focus was mainly in the enhancement of the synthesized materials that involved the active metal phase (i.e., boosting its dispersion), the different types of solid supports, and the frequent addition of a second metal oxide (usually behaving as a promoter). The current manuscript aims in recapping a huge number of trials and is divided based on the support nature: SiO2, Al2O3, CeO2, ZrO2, MgO, hydrotalcites, carbons and zeolites, and proposes the main properties to be kept for obtaining highly efficient carbon dioxide methanation catalysts.
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34
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CO2 Methanation on Supported Rh Nanoparticles: The combined Effect of Support Oxygen Storage Capacity and Rh Particle Size. Catalysts 2020. [DOI: 10.3390/catal10080944] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
CO2 hydrogenation toward methane, a reaction of high environmental and sustainable energy importance, was investigated at 200–600 °C and H2/CO2 = 4/1, over Rh nanoparticles dispersed on supports with different oxygen storage capacity characteristics (γ-Al2O3, alumina-ceria-zirconia, and ceria-zirconia). The effects of the support OSC and Rh particle size on reaction behavior under both integral and differential conditions were investigated, to elucidate the combined role of these crucial catalyst design parameters on methanation efficiency. A volcano-type variation of methanation turnover frequency was found in respect to support OSC; Rh/ACZ, with intermediate OSC, was the optimal catalyst. The structure sensitivity of the reaction was found to be a combined function of support OSC and Rh particle size: For Rh/γ-Al2O3 (lack of OSC) methanation was strongly favored on small particles—the opposite for Rh/CZ (high OSC). The findings are promising for rational design and optimization of CO2 methanation catalysts by tailoring the aforementioned characteristics.
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