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Messabih K, Bendjaballah-Lalaoui N, Boucheffa Y. High-temperature CO 2 sorption over Li 4SiO 4 synthesized from diatomite: study of sorption heat and isotherm modeling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32003-32015. [PMID: 38642231 DOI: 10.1007/s11356-024-33332-8] [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: 10/26/2023] [Accepted: 04/11/2024] [Indexed: 04/22/2024]
Abstract
The Li4SiO4 seems to be an excellent sorbent for CO2 capture at post-combustion. Our work contributes to understanding the effect of the natural Algerian diatomite as a source of SiO2 in the synthesis of Li4SiO4 for CO2 capture at high temperature. For this purpose, we use various molar % (stoichiometric and excess) of calcined natural diatomite and pure SiO2. To select the best composition, CO2 sorption isotherms at 500 °C on the prepared Li4SiO4 are obtained using TGA measurements under various flows of CO2 in N2. The sorbent having 10% molar SiO2 in diatomite (10%ND-LS) exhibits the best CO2 uptake, probably due to various factors such as the content of the different secondary phases. A comparative study was performed at 400 to 500 °C on this selected 10%ND-LS and those with stoichiometric composition obtained with diatomite and pure SiO2. The obtained isotherms show the endothermic character of CO2 sorption. In addition, the evolution of isosteric heat highlights the nature of the involved CO2/Li4SiO4 interactions, by considering the double-shell mechanism. Finally, the experimental sorption isotherms are confronted with some well-known adsorption models to explain the phenomenon occurring over our prepared sorbents. Freundlich and Jensen-Seaton models present a better correlation with the experimental results.
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Affiliation(s)
- Khedidja Messabih
- Laboratory of Material Chemistry, Catalysis and Environment, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El-Alia, Bab-Ezzouar, Algiers, Algeria
- Laboratory of Physico-Chemical Study of Materials and Application to the Environment, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El-Alia, Bab-Ezzouar, Algiers, Algeria
| | - Nadia Bendjaballah-Lalaoui
- Laboratory of Material Chemistry, Catalysis and Environment, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El-Alia, Bab-Ezzouar, Algiers, Algeria
| | - Youcef Boucheffa
- Laboratory of Physico-Chemical Study of Materials and Application to the Environment, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El-Alia, Bab-Ezzouar, Algiers, Algeria.
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2
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González A, Martínez-Cruz MA, Alcántar-Vázquez B, Portillo-Vélez NS, Pfeiffer H, Lara-García HA. Influence of NiO into the CO 2 capture of Li 4SiO 4 and its catalytic performance on dry reforming of methane. Heliyon 2024; 10:e24645. [PMID: 38304793 PMCID: PMC10830542 DOI: 10.1016/j.heliyon.2024.e24645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 12/13/2023] [Accepted: 01/11/2024] [Indexed: 02/03/2024] Open
Abstract
Carbon capture, utilization, and storage (CCUS) technology offer promising solution to mitigate the threatening consequences of large-scale anthropogenic greenhouse gas emissions. Within this context, this report investigates the influence of NiO deposition on the Li4SiO4 surface during the CO2 capture process and its catalytic behavior in hydrogen production via dry methane reforming. Results demonstrate that the NiO impregnation method modifies microstructural features of Li4SiO4, which positively impact the CO2 capture properties of the material. In particular, the NiO-Li4SiO4 sample captured twice as much CO2 as the pristine Li4SiO4 material, 6.8 and 3.4 mmol of CO2 per gram of ceramic at 675 and 650 °C, respectively. Additionally, the catalytic results reveal that NiO-Li4SiO4 yields a substantial hydrogen production (up to 55 %) when tested in the dry methane reforming reaction. Importantly, this conversion remains stable after 2.5 h of reaction and is selective for hydrogen production. This study highlights the potential of Li4SiO4 both a support and a captor for a sorption-enhanced dry reforming of methane. To the best of our knowledge, this is the first report showcasing the effectiveness of Li4SiO4 as an active support for Ni-based catalysis in the dry reforming of methane. These findings provide valuable insights into the development of this composite as a dual-functional material for carbon dioxide capture and conversion.
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Affiliation(s)
- Ariadna González
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20364, CDMX, 01000, Mexico
| | - Miguel A. Martínez-Cruz
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Cd. Universitaria, Del. Coyoacán, CP 04510, CDMX, Mexico
| | - Brenda Alcántar-Vázquez
- Instituto de Ingeniería, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Coyoacán, CP 04510, CDMX, Mexico
| | - Nora S. Portillo-Vélez
- Depto. De Química, Área de Catálisis, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco No. 189, Iztapalapa, CDMX, 09340, Mexico
| | - Heriberto Pfeiffer
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Cd. Universitaria, Del. Coyoacán, CP 04510, CDMX, Mexico
| | - Hugo A. Lara-García
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20364, CDMX, 01000, Mexico
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3
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Hu Y, Lu H, Lv Z, Zhang M, Yu G. Pore reconstruction mechanism of wheat straw-templated Li 4SiO 4 pellets for CO 2 capture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159275. [PMID: 36216051 DOI: 10.1016/j.scitotenv.2022.159275] [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: 08/19/2022] [Revised: 09/18/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
The traditional Li4SiO4-based CO2 sorbent pellets prepared from mechanical granulation methods usually presented densified microstructures. Hence, wheat straw, an agricultural waste featured with huge production and low cost, was used as porosity creator to improve the microstructures and CO2 capture performance of Li4SiO4 pellets. The results indicated that wheat straw effectively enhanced the cyclic CO2 sorption capacity of the pellets. In particular, 30 wt% wheat straw-templated Li4SiO4 pellets (LA-WS30) exhibited the capacity of ~0.15 g/g that is almost twice as high as that of unmodified pellets. The enriched porosity and improved porous structures resulted from the quick release of burning gases was considered as the main reason for the performance enhancement. In addition, the alkaline (K and Na) salts in wheat straw played a positive role in CO2 sorption of Li4SiO4 pellets due to the reduced diffusion resistance. However, the pore plugging of residual wheat straw ashes after high-temperature treatment decreased the contact areas and, thus, led to the capacity reduction. To conclude, the comprehensive performance of wheat straw-templated Li4SiO4 pellets is the result of the combined effects of porosity creation, alkali doping and pore plugging by ashes.
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Affiliation(s)
- Yingchao Hu
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Aquaculture Facilities Engineering, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China.
| | - Hongyuan Lu
- Beijing Innowind Aerospace Equipment Company Limited, Beijing 100854, China; School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Zhe Lv
- Purification Equipment Research Institute, Handan 056027, China
| | - Ming Zhang
- Purification Equipment Research Institute, Handan 056027, China.
| | - Ge Yu
- Purification Equipment Research Institute, Handan 056027, China
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4
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CO2 capture by Li4SiO4 Sorbents: From fundamentals to applications. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Chen Q, Chen K, Yu F, Guo A, Zou S, Zhou M, Li J, Dan J, Li Y, Dai B, Guo X. Confined Jet Impingement Continuous Microchannel Reactor Synthesis of Ultrahigh-Quality Mesoporous Silica Nanospheres for CO 2 Capture. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiang Chen
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Kai Chen
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Feng Yu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
- Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, PR China
| | - Aixia Guo
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Siqing Zou
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Mei Zhou
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Jiangwei Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Jianming Dan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Yongsheng Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Xuhong Guo
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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6
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Hydrogen Production with In Situ CO2 Capture at High and Medium Temperatures Using Solid Sorbents. ENERGIES 2022. [DOI: 10.3390/en15114039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogen is a versatile vector for heat and power, mobility, and stationary applications. Steam methane reforming and coal gasification have been, until now, the main technologies for H2 production, and in the shorter term may remain due to the current costs of green H2. To minimize the carbon footprint of these technologies, the capture of CO2 emitted is a priority. The in situ capture of CO2 during the reforming and gasification processes, or even during the syngas upgrade by water–gas shift (WGS) reaction, is especially profitable since it contributes to an additional production of H2. This includes biomass gasification processes, where CO2 capture can also contribute to negative emissions. In the sorption-enhanced processes, the WGS reaction and the CO2 capture occur simultaneously, the selection of suitable CO2 sorbents, i.e., with high activity and stability, being a crucial aspect for their success. This review identifies and describes the solid sorbents with more potential for in situ CO2 capture at high and medium temperatures, i.e., Ca- or alkali-based sorbents, and Mg-based sorbents, respectively. The effects of temperature, steam and pressure on sorbents’ performance and H2 production during the sorption-enhanced processes are discussed, as well as the influence of catalyst–sorbent arrangement, i.e., hybrid/mixed or sequential configuration.
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7
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Belgamwar R, Maity A, Das T, Chakraborty S, Vinod CP, Polshettiwar V. Lithium silicate nanosheets with excellent capture capacity and kinetics with unprecedented stability for high-temperature CO 2 capture. Chem Sci 2021; 12:4825-4835. [PMID: 34168759 PMCID: PMC8179639 DOI: 10.1039/d0sc06843h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An excessive amount of CO2 is the leading cause of climate change, and hence, its reduction in the Earth's atmosphere is critical to stop further degradation of the environment. Although a large body of work has been carried out for post-combustion low-temperature CO2 capture, there are very few high temperature pre-combustion CO2 capture processes. Lithium silicate (Li4SiO4), one of the best known high-temperature CO2 capture sorbents, has two main challenges, moderate capture kinetics and poor sorbent stability. In this work, we have designed and synthesized lithium silicate nanosheets (LSNs), which showed high CO2 capture capacity (35.3 wt% CO2 capture using 60% CO2 feed gas, close to the theoretical value) with ultra-fast kinetics and enhanced stability at 650 °C. Due to the nanosheet morphology of the LSNs, they provided a good external surface for CO2 adsorption at every Li-site, yielding excellent CO2 capture capacity. The nanosheet morphology of the LSNs allowed efficient CO2 diffusion to ensure reaction with the entire sheet as well as providing extremely fast CO2 capture kinetics (0.22 g g−1 min−1). Conventional lithium silicates are known to rapidly lose their capture capacity and kinetics within the first few cycles due to thick carbonate shell formation and also due to the sintering of sorbent particles; however, the LSNs were stable for at least 200 cycles without any loss in their capture capacity or kinetics. The LSNs neither formed a carbonate shell nor underwent sintering, allowing efficient adsorption–desorption cycling. We also proposed a new mechanism, a mixed-phase model, to explain the unique CO2 capture behavior of the LSNs, using detailed (i) kinetics experiments for both adsorption and desorption steps, (ii) in situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy measurements, (iii) depth-profiling X-ray photoelectron spectroscopy (XPS) of the sorbent after CO2 capture and (iv) theoretical investigation through systematic electronic structure calculations within the framework of density functional theory (DFT) formalism. Capturing CO2 before its release. Lithium silicate nanosheets showed high CO2 capture capacity (35.3 wt%) with ultra-fast kinetics (0.22 g g−1 min−1) and enhanced stability at 650 °C for at least 200 cycles, due to mixed-phase-model of CO2 capture.![]()
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Affiliation(s)
- Rajesh Belgamwar
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR) Mumbai India
| | - Ayan Maity
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR) Mumbai India
| | - Tisita Das
- Harish-Chandra Research Institute, HBNI Allahabad Uttar Pradesh India
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Department of Physics, Indian Institute of Technology Simrol Indore India
| | - Chathakudath P Vinod
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory (NCL) Pune India
| | - Vivek Polshettiwar
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR) Mumbai India
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8
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9
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Fang Y, Zou R, Chen X. High‐temperature CO
2
adsorption over Li
4
SiO
4
sorbents derived from different lithium sources. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23722] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuan Fang
- Wuhan Second Ship Design and Research Institute Wuhan China
| | - Renjie Zou
- State Key Laboratory of Coal Combustion, School of Energy and Power EngineeringHuazhong University of Science & Technology Wuhan China
| | - Xiaoxiang Chen
- State Key Laboratory of Coal Combustion, School of Energy and Power EngineeringHuazhong University of Science & Technology Wuhan China
- College of Environmental EngineeringWuhan Textile University Wuhan China
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10
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11
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Yañez-Aulestia A, Ovalle-Encinia O, Pfeiffer H. Evaluation of Fe-containing Li 2CuO 2 on CO 2 capture performed at different physicochemical conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:29532-29543. [PMID: 29872979 DOI: 10.1007/s11356-018-2444-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Li2CuO2 and different iron-containing Li2CuO2 samples were synthesized by solid state reaction. On iron-containing samples, atomic sites of copper are substituted by iron ions in the lattice (XRD and Rietveld analyses). Iron addition induces copper release from Li2CuO2, which produce cationic vacancies and CuO, due to copper (Cu2+) and iron (Fe3+) valence differences. Two different physicochemical conditions were used for analyzing CO2 capture on these samples; (i) high temperature and (ii) low temperature in presence of water vapor. At high temperatures, iron addition increased CO2 chemisorption, due to structural and chemical variations on Li2CuO2. Kinetic analysis performed by first order reaction and Eyring models evidenced that iron addition on Li2CuO2 induced a faster CO2 chemisorption but a higher thermal dependence. Conversely, CO2 chemisorption at low temperature in water vapor presence practically did not vary by iron addition, although hydration and hydroxylation processes were enhanced. Moreover, under these physicochemical conditions the whole sorption process became slower on iron-containing samples, due to metal oxides presence.
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Affiliation(s)
- Ana Yañez-Aulestia
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del. Coyoacán C.P, 04510, Ciudad de México, Mexico
| | - Oscar Ovalle-Encinia
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del. Coyoacán C.P, 04510, Ciudad de México, Mexico
| | - Heriberto Pfeiffer
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del. Coyoacán C.P, 04510, Ciudad de México, Mexico.
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12
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Yan X, Li Y, Ma X, Zhao J, Wang Z. Performance of Li₄SiO₄ Material for CO₂ Capture: A Review. Int J Mol Sci 2019; 20:ijms20040928. [PMID: 30791658 PMCID: PMC6412717 DOI: 10.3390/ijms20040928] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 01/31/2019] [Accepted: 02/18/2019] [Indexed: 12/03/2022] Open
Abstract
Lithium silicate (Li4SiO4) material can be applied for CO2 capture in energy production processes, such as hydrogen plants, based on sorption-enhanced reforming and fossil fuel-fired power plants, which has attracted research interests of many researchers. However, CO2 absorption performance of Li4SiO4 material prepared by the traditional solid-state reaction method is unsatisfactory during the absorption/regeneration cycles. Improving CO2 absorption capacity and cyclic stability of Li4SiO4 material is a research highlight during the energy production processes. The state-of-the-art kinetic and quantum mechanical studies on the preparation and CO2 absorption process of Li4SiO4 material are summarized, and the recent studies on the effects of preparation methods, dopants, and operating conditions on CO2 absorption performance of Li4SiO4 material are reviewed. Additionally, potential research thoughts and trends are also suggested.
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Affiliation(s)
- Xianyao Yan
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
| | - Yingjie Li
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
| | - Xiaotong Ma
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
| | - Jianli Zhao
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
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13
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Izquierdo MT, Saleh A, Sánchez-Fernández E, Maroto-Valer MM, García S. High-Temperature CO2 Capture by Li4SiO4 Sorbents: Effect of CO2 Concentration and Cyclic Performance under Representative Conditions. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02317] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Teresa Izquierdo
- Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom
- Instituto de Carboquímica, ICB-CSIC, c/Miguel Luesma, 4, 50018 Zaragoza, Spain
| | - Ahmed Saleh
- Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom
| | - Eva Sánchez-Fernández
- Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom
| | - M. Mercedes Maroto-Valer
- Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom
| | - Susana García
- Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom
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14
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Enhanced CO2 chemisorption at high temperatures via oxygen addition using (Fe, Cu or Ni)-containing sodium cobaltates as solid sorbents. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.03.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Memon MZ, Zhao X, Sikarwar VS, Vuppaladadiyam AK, Milne SJ, Brown AP, Li J, Zhao M. Alkali Metal CO 2 Sorbents and the Resulting Metal Carbonates: Potential for Process Intensification of Sorption-Enhanced Steam Reforming. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12-27. [PMID: 27997129 DOI: 10.1021/acs.est.6b04992] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Sorption-enhanced steam reforming (SESR) is an energy and cost efficient approach to produce hydrogen with high purity. SESR makes it economically feasible to use a wide range of feedstocks for hydrogen production such as methane, ethanol, and biomass. Selection of catalysts and sorbents plays a vital role in SESR. This article reviews the recent research aimed at process intensification by the integration of catalysis and chemisorption functions into a single material. Alkali metal ceramic powders, including Li2ZrO3, Li4SiO4 and Na2ZrO3 display characteristics suitable for capturing CO2 at low concentrations (<15% CO2) and high temperatures (>500 °C), and thus are applicable to precombustion technologies such as SESR, as well as postcombustion capture of CO2 from flue gases. This paper reviews the progress made in improving the operational performance of alkali metal ceramics under conditions that simulate power plant and SESR operation, by adopting new methods of sorbent synthesis and doping with additional elements. The paper also discusses the role of carbonates formed after in situ CO2 chemisorption during a steam reforming process in respect of catalysts for tar cracking.
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Affiliation(s)
| | - Xiao Zhao
- School of Environment, Tsinghua University , Beijing, 100084, China
| | | | | | - Steven J Milne
- School of Chemical and Process Engineering (SCAPE), University of Leeds , Leeds LS2 9JT, United Kingdom
| | - Andy P Brown
- School of Chemical and Process Engineering (SCAPE), University of Leeds , Leeds LS2 9JT, United Kingdom
| | - Jinhui Li
- School of Environment, Tsinghua University , Beijing, 100084, China
| | - Ming Zhao
- School of Environment, Tsinghua University , Beijing, 100084, China
- Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education, Beijing, 100084, China
- Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University , Beijing, China
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16
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Zhang S, Chowdhury MBI, Zhang Q, de Lasa HI. Novel Fluidizable K-Doped HAc-Li4SiO4 Sorbent for CO2 Capture Preparation and Characterization. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03746] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sai Zhang
- Department
of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Muhammad B. I. Chowdhury
- Department
of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada
| | - Qi Zhang
- Department
of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hugo I. de Lasa
- Department
of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada
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17
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Yang X, Liu W, Sun J, Hu Y, Wang W, Chen H, Zhang Y, Li X, Xu M. Alkali-Doped Lithium Orthosilicate Sorbents for Carbon Dioxide Capture. CHEMSUSCHEM 2016; 9:2480-2487. [PMID: 27531239 DOI: 10.1002/cssc.201600737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Indexed: 06/06/2023]
Abstract
New alkali-doped (Na2 CO3 and K2 CO3 ) Li4 SiO4 sorbents with excellent performance at low CO2 concentrations were synthesized. We speculate that alkali doping breaks the orderly arrangement of the Li4 SiO4 crystals, hence increasing its specific surface area and the number of pores. It was shown that 10 wt % Na2 CO3 and 5 wt % K2 CO3 are the optimal additive ratios for doped sorbents to attain the highest conversions. Moreover, under 15 vol % CO2 , the doped sorbents present clearly faster absorption rates and exhibit stable cyclic durability with impressive conversions of about 90 %, at least 20 % higher than that of non-doped Li4 SiO4 . The attained conversions are also 10 % higher than the reported highest conversion of 80 % on doped Li4 SiO4 . The performance of Li4 SiO4 is believed to be enhanced by the eutectic melt, and it is the first time that the existence of eutectic Li/Na or Li/K carbonate on doped sorbents when absorbing CO2 at high temperature is confirmed; this was done using systematical analysis combining differential scanning calorimetry with in situ powder X-ray diffraction.
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Affiliation(s)
- Xinwei Yang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Wenqiang Liu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China.
| | - Jian Sun
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Yingchao Hu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Wenyu Wang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Hongqiang Chen
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Yang Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Xian Li
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China
| | - Minghou Xu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, PR China.
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