Separation and Purification Technology最新文献

{"title":"Study on the 3D-printed monolithic ZSM-5 catalyst to enhance CO2 desorption from amine solutions","authors":"Yanchi Jiang, Junfeng Jiang, Ruping Meng, Chengdong Kong, Zhongxiao Zhang, Ying Liao","doi":"10.1016/j.seppur.2024.131230","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131230","url":null,"abstract":"CO₂ desorption catalyzed by solid acid is one of the effective ways to reduce the energy consumption in the post-combustion. In this study, 3D printing technology was employed to construct a monolithic catalyst based on ZSM-5 with a direct ink writing (DIW) method. The performance of CO₂ desorption from amine solution was studied in a continuous bubbling reactor at mild temperatures (<100 °C). The physicochemical properties of the ink for 3D-printing were analyzed using XRD, NH₃-TPD, BET, and N₂ isothermal adsorption–desorption to single out the optimal preparation method. A computer vision method was established to investigate the formation of CO₂ bubbles on the surface of the 3D-printed catalyst and their evolution in the liquid bulk. The results show that the ink for 3D-printed catalysts based on ZSM-5 with a low Si/Al ratio provided more surface mesopores and active sites, leading to an increase of 46.0 %∼121.6 % in the maximum CO₂ desorption rate and 16.3 %∼36.0 % in the CO₂ desorption capacity, compared to the blank amine solution. A lower sintering temperature is conducive to retaining the active sites on the catalyst surface, thereby effectively enhancing the kinetics of CO₂ desorption. The optimal Si/Al ratio and sintering temperature for the ink of 3D-printed catalysts were 25 and 550 °C, respectively, which can reduce the CO₂ desorption energy by 26.5 %. And the reduction of CO₂ desorption amount for various ZSM-5 based inks did not exceed 6.0 % after multiple cyclic testing. The 3D-printed ZSM-5 monolithic catalysts increased the total CO₂ amount by 54.8 % at most compared to blank absorbents, because the grille configurations provided more specific surface area to promote the deprotonation of MEAH⁺ and the decomposition of MEACOO^-. Meanwhile, the larger pore structure of the 3D-printed channels facilitated the diffusion of desorbed CO₂ into the liquid phase. Compared to the “Square channel”, the “Diamond channel” with a lower surface Gibbs free energy enhanced the precipitation of CO₂ on the catalyst surface and the coalescence of CO₂ bubbles in the liquid phase, accelerating the desorption of CO₂ from amine solution at mild temperature. This study provides an effective approach for developing low-cost, high-performance catalysts by 3D-printing technology for CO₂ desorption from amine solutions.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"13 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The promotion effect of Ce on Fe/BEA deNOx catalyst under high water content facing coalbed methane power generation","authors":"Jiangning Liu, Xuezhen Liu, Xianfeng Wu, Zhaoyang Fan, Xu Wu","doi":"10.1016/j.seppur.2024.131198","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131198","url":null,"abstract":"Coalbed methane (CBM) power generation is supposed as the most effective method to make utilization of low-concentration methane, efficient NO_x removal from CBM power generation is of great significance. Distinguished from traditional coal-fired power plants and diesel vehicle, CBM power generation exhaust exhibited the characteristics of high temperature, high NO_x concentration, high humidity, and high gas hourly space velocity, where the new challenges were proposed for NOx removal facing the CBM power generation. Under this background, the series of x wt% Fe + y wt% Ce/BEA denitrification catalysts with different iron and cerium contents (x = 1, 2, 3; y = 0, 1, 2) were fabricated via impregnation method and evaluated in the NH₃-SCR reaction, where the optimized 2 wt% Fe/BEA and 1 wt% Fe + 1 wt% Ce/BEA catalysts were employed to further researched the HTA performance and H₂O resistance under higher water content. The results indicated that the catalytic performance was obviously enhanced after introducing cerium, where the NO_x conversion of 1 wt%Fe + 1 wt% Ce/BEA was above 95 % at 420–600 °C, after hydrothermal aging process, the 1 wt% Fe + 1 wt% Ce/BEA-H still possessed the favorable activity, besides, 1 wt% Fe + 1 wt% Ce/BEA also presented better performance even under the wet conditions. Characterization analysis revealed that the better performance of the 1 wt%Fe + 1 wt% Ce/BEA catalyst originated from the synergistic effects between iron, cerium and BEA support, which was attributed to the appropriate distribution of Fe³⁺ content, redox ability, and the abundant acid sites, thus further leading to the excellent denitrification activity, high N₂ selectivity, and strong water resistance.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"24 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanism of z-scheme BN/BiOI heterojunction for efficient Photodegradation of Perfluorooctane sulfonate (PFOS)","authors":"Lijie Duan, Mengbin Gu, Minghao Wang, Liquan Liu, Xue Cheng, Jun Huang","doi":"10.1016/j.seppur.2024.131229","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131229","url":null,"abstract":"Perfluorooctane sulfonate (PFOS) poses a significant threat to human health and ecosystems throughout its lifecycle because of its PBT-LRT properties. In this study, a Z-Scheme photocatalyst BN/BiOI was developed and evaluated for its efficacy in photodegrading PFOS. Notably, after 2 h of reaction, 100 % removal of PFOS (k_obs = 1.278 h⁻¹) was achieved, alongside a 100 % desulfurization rate and a 45.40 % defluorination rate after 6 h. Comparing the BN/BiOI system to BN, the remarkable enhancement observed in BN/BiOI heterojunction can be attributed primarily to the efficient separation and reduced recombination rate of photogenerated electrons and holes. Insights from Electron Paramagnetic Resonance (EPR) analysis shed light on the roles of e^-, h⁺, •OH, and •O₂H radicals in the PFOS degradation process facilitated by BN/BiOI. The proposed mechanism for photocatalytic PFOS degradation by the BN/BiOI system underscores the initial breaking of the C-S bond. Moreover, BN/BiOI showcases its effectiveness in degrading perfluorocarboxylic acids (PFOA, TA, C7, and Gen-X) as well as perfluoro sulfonic acids (F-53B, F-53, and 6:2 FTS), highlighting its potential for treating not only PFOS but also other PFAS contaminants across a broad pH range. To the best of our knowledge, this study is the first to demonstrate the Z-scheme BN/BiOI heterogeneous photocatalytic degradation of PFOS.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"83 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated nanofiltration and photocatalytic processes for the removal of polystyrene nanoplastics waste in water","authors":"Angela Severino, Beatrice Russo, Cristina Lavorato, Pietro Argurio, Alberto Figoli, Raffaele Molinari, Teresa Poerio","doi":"10.1016/j.seppur.2024.131232","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131232","url":null,"abstract":"The rising amount of plastic waste in aquatic environments highlights the need for innovative solutions. In response, this study introduces an integrated approach that combines membrane separation with a photocatalytic process to tackle the removal of nanoplastics from water. Membrane processes effectively concentrated polystyrene nanoplastics (PS NPs), thereby decreasing the volume of wastewater requiring photocatalytic treatment. The nanofiltration process achieved a 100 % rejection of the nanoplastics, increasing their concentration from 2 mg/L to 100 mg/L and reducing the wastewater volume with a volume reduction factor (VRF) of 44.25. In addition, a low impact on membrane fouling was observed, with an almost complete restoration of the initial membrane performance (98 %) after a washing with water. This indicates the formation of reversible fouling, identified by Hermia’s models as a mechanism of cake layer formation.Photocatalytic degradation of concentrated wastewater using semiconductor photocatalysts titanium dioxide (TiO₂) was conducted to evaluate the performance of the integrated system under varying operating conditions, including NPs concentration and photocatalyst dosage. The results showed the mineralization of 10 mg/L of PS NPs after 24 h, using 1 g/L of TiO₂ under UV light in water as solvent under atmospheric air, confirmed by total organic carbon (TOC) and py-GC/MS analyses. In addition, experimental results at shorter reaction time demonstrate the capability of the photocatalytic system to chemically transform PS into valuable intermediates. This highlights the potential of photocatalysis as a sustainable approach for addressing plastic pollution while creating opportunities for recycling plastic waste into useful products. This study demonstrates a promising system that combines recovery and degradation into a single, optimized step, paving the way for application in the tertiary treatment stage of wastewater treatment plants (WWTPs).","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"48 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CFD insights into microwave- assisted deep eutectic solvent for the recovery of astaxanthin from bacteria Paracoccus carotinifaciens: From extraction to agricultural applications","authors":"Cassamo U. Mussagy, Angie V. Caicedo Paz, Pablo Cornejo, Christian Santander, Felipe González, Rafael G. Voloua, Ximena Besoain, Alejandra Larach, Aldo Salinas, Karina Godoy, Diakaridia Sangaré","doi":"10.1016/j.seppur.2024.131212","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131212","url":null,"abstract":"Biorefineries are at the forefront of sustainable innovation, extracting and processing bioactive compounds from microorganisms and other biological sources for various applications in agriculture and food production. Among these compounds, astaxanthin (AXT) stands out for its remarkable antioxidant properties and significant health benefits. This study introduces a pioneering approach to developing a zero-waste, bacterial-based biorefinery by using microwave (MW)-assisted deep eutectic solvents (DES) for the extraction of astaxanthin-rich extracts (ARE) from <em>Paracoccus carotinifaciens</em>. Computational Fluid Dynamics (CFD) simulations was used to study the MW-ARE extraction process by accurately modeling the flow and mixing behaviors of DES during MW extraction, as well as the heat and mass transfer within the system. The DES enriched with ARE was thoroughly tested for their antifungal and anti-oomycete activity against <em>Botrytis cinerea</em> and <em>Phytophthora cinnamomi</em>, respectively, taking advantage of the high antioxidant and antimicrobial properties of ARE. Additionally, the remaining colorless fraction of <em>P. carotinifaciens</em> left after MW-ARE extraction was repurposed as a biofertilizer to enhance the growth of lettuce plants (<em>Lactuca sativa</em> L.). This comprehensive study provides a valuable insight into the mechanisms of ARE recovery using MW-assisted extraction and lay the groundwork for a robust, efficient, and sustainable biorefinery model that minimizes waste and maximizes the use of bacterial biomass, aligning with the principles of a circular economy, to elevate product quality and promote sustainable agricultural practices.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"113 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Opposite trends in acetylene/ethylene selectivity change after organic functionalization of Na+- and Cs+-MOR zeolites","authors":"TaeHoon Kim, Philsuk Kang, Eunji Eom, Su-kyung Lee, Jeong-Chul Kim, Sungjoon Kweon, Min Bum Park, Yong Youn, Kanghee Cho, Changbum Jo","doi":"10.1016/j.seppur.2024.131226","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131226","url":null,"abstract":"We developed a novel adsorbent with significant adsorption capacity and selectivity for acetylene(C₂H₂) in an acetylene/ethylene (C₂H₂/C₂H₄) mixture, through post-synthetic functionalization of thiolbenzene onto the micropore walls of MOR zeolite via chemical bonding. To systematically investigate the effects of cation type and the thiolbenzene group on the adsorption properties of the zeolite for these two adsorbates, pristine MOR zeolite and its functionalized counterparts in two different cation forms (Na⁺- and Cs⁺-forms) were analyzed, obtaining sorption isotherms for each adsorbate. In addition, Ideal Adsorbed Solution Theory (IAST) calculation was used to evaluate the theorical selectivity of acetylene/ethylene. The pristine samples in both cation forms show acetylene-preferred sorption ability (IAST selectivity: 12.89 for Na⁺- and 11.60 for Cs⁺-forms) under 100 kPa of gas mixture (C₂H₂: C₂H₄ = 1:1). However, notably, the selectivity of Na⁺-MOR somewhat decreased (50 % decrease to 6.481) after the organic functionalization, while Cs⁺-form increased further (55 % increase to 17.95). Density Functional Theory(DFT) calculations for the binding of two adsorbates on MOR zeolite surfaces explained that the specific adsorption sites for C₂H₂ and C₂H₄, their number, and adsorption energy were different with respect to the presence of thiolbenzene and the type of cations. The additional interaction between thiolbenzene and both adsorbates (C₂H₄, C₂H₂) stabilizes adsorption in Na⁺-form MOR zeolite and Cs⁺-form, leading to the observed decrease and increase in C₂H₂/C₂H₄ selectivity, respectively. This study demonstrates that the co-existence of organic groups and inorganic cations within the micropores synergistically impacts the adsorption properties of zeolites, enabling the fine-tuning of the separation performance of these materials.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"20 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the thermodynamic and kinetics of selective recovery of lithium from spent lithium-ion batteries with gypsum waste","authors":"Junjie Shi, Dong Chen, Changle Hou, Min Chen, Sheng Li, Jianzhong Li","doi":"10.1016/j.seppur.2024.131139","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131139","url":null,"abstract":"With a purpose of selective extraction of lithium from spent lithium-ion batteries, the sulfation roasting of cathode material with gypsum waste followed by water leaching was proposed in the present study. The thermodynamics and kinetics of the sulfation roasting process were systematically studied. The activation energy, pre-exponential factor, and reaction mechanism function of the sulfation roasting reaction were determined to be 220.93 kJ/mol, 6.264 × 10², and <em>g</em>(<em>α</em>) = 1-(1-<em>α</em>)^2/3, respectively. The optimal parameters for the sulfation roasting process were identified as a roasting temperature of 750 °C, a mass ratio of graphite, gypsum, and cathode material at 0.4:0.8:1, and a roasting duration of 60 min. Under these conditions, the Li leaching rate reached 79 %, while the leaching rates of Ni, Co, and Mn remained near 0. Li from the cathode material preferentially reacted with CaSO₄ to form Li₂SO₄ and CaCO₃, while some Li also reacted with CaCO₃ to produce Li₂CO₃. Ni, Co, and Mn in the cathode material initially formed intermediate products such as Li_xNi_2-xO₂, Li_xCo_1-xO, and LiMn₂O₄. These intermediates eventually transformed into Ni, Ni₃S₂, Co, MnO, and Li₂CO₃ in the presence of graphite.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"89 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioinspired surface engineering of amidoxime functionalized polyvinylidene fluoride membrane for efficient uranium extraction from seawater and wastewater","authors":"Huanhuan Tan, Tianhang Shan, Bingfeng Deng, Jianang Sha, Chuntai Liu, Peipei Yang, Songwei Li, Zhipeng Xie, Zhong Liu","doi":"10.1016/j.seppur.2024.131194","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131194","url":null,"abstract":"Efficient uranium (VI) extraction from seawater (UES) and wastewater is crucial for environmental remediation and nuclear power generation. Herein, a novel amidoxime functionalized polyvinylidene fluoride (PVDF-AO-4) membrane constructed through reaction of amoximated 2-diaminomaleonitrile (DAMN-AO) with Tannic acid of the Tannic acid (TA)-3-aminopropyltriethoxysilane (APTES) coating (TA-APTES coating) is designed via surface engineering technology. Introducing the amidoxime group with abundant multi-affinity sites endows PVDF-AO-4 with excellent adsorption capacity (q_m = 175.8 mg/g) and selectivity for U(VI). Meanwhile, the PVDF-AO-4 exhibits outstanding recyclability, antifouling capabilities, high flux recovery rate (FRR) of over 90 % and low flux decline rate (FDR) of under 5 % after five cycles in the dynamic adsorption and great elution efficiency (nearly 80 %) after 10 cycles. PVDF-AO-4 can effectively capture 9.84 mg/g U(VI) in 3 weeks period from natural seawater. The membrane material designed in this work can be used for efficient, selective of uranium from seawater and wastewater.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"39 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Ag(I) coordination in Ag-MOF-303 enhanced the adsorption and separation capabilities for H2/D2","authors":"Zining Wang, Fenglei Wang, Yu Luo, Yiman Liu, Yuanhua Wang, Fan Wang, Yongdong Jin, Chuanqin Xia","doi":"10.1016/j.seppur.2024.131219","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131219","url":null,"abstract":"As a crucial raw material for nuclear fusion, the efficient separation of deuterium from H₂/D₂ mixture gas is of paramount importance. However, the similar physical and chemical properties of hydrogen isotope gases make this work a significant challenge. In this study, Ag (Ⅰ) ions were coordinated into the metal–organic framework MOF-303 to synthesize Ag-MOF-303 with 5.8 Å pore size for H₂/D₂ separation. The adsorption capacity per unit BET surface area was approximately 50 % higher than that of MOF-303 at 87 K. Combining the experimental results and GCMC calculations, although there was no CAQS between Ag-MOF-303 and H₂/D₂, the affinity between Ag-MOF-303 and H₂/D₂ was enhanced by Ag (I), resulting in an increase in IAST selectivity from 1.62 to 1.93 (77 K). Furthermore, dynamic breakthrough experiments also demonstrated effective separation performance (the penetration selectivity was increased from 1.26 to 1.33), and the H₂/D₂ separation factor was measured to be 6.12 using TDS at 30 K and 1 kPa.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"7 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on performance and granulation of Nd-doped Li4SiO4 pellets for thermochemical energy storage","authors":"Jianchen Yi, Jue Lei, Yuan Wei, Ruicheng Fu, Yingchao Hu","doi":"10.1016/j.seppur.2024.131191","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.131191","url":null,"abstract":"Lithium orthosilicate (Li₄SiO₄) is well suited for energy storage systems in concentrated solar power (CSP) generation due to its large energy storage density, and relatively low regeneration temperature. However, performance degradation over multiple storage/release cycles is an urgent problem to be solved prior to its application. In this work, the transition metal Nd was employed as a promoter to modify Li₄SiO₄ heat carriers, and the results demonstrated that the Li₄SiO₄ heat carrier doped with 9 wt% Nd₂O₃ (LA-9Nd) had an energy storage density of up to 680 kJ/kg at 650 °C with almost no attenuation over 10 cycles, which was attributed to the lattice defects and inert frameworks formed by the Nd doping. The energy storage performance of LA-9Nd was also tested under harsh conditions, where high CO₂ concentration in the regeneration process deteriorated the carbonation performance of the heat carriers. In addition, to address the elutriation problem of Li₄SiO₄-based heat carrier powders during cyclic fluidization, water-graphite and agar-graphite granulation methods were used to granulate the LA-9Nd powders. The granulated pellets exhibited both good energy storage density and anti-attrition ability. In general, satisfactory energy storage density, cyclic stability and mechanical performance endow Nd-doped Li₄SiO₄ heat carrier pellets with great prospects for thermochemical energy storage","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"201 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}