Journal of CO2 Utilization最新文献

{"title":"Unravelling carbon formation behaviour and long-term stability of dry reforming of methane over Ru-doped ceria-zirconia catalyst","authors":"Jason Sun ,&nbsp;Doki Yamaguchi ,&nbsp;Liangguang Tang ,&nbsp;Ken Chiang","doi":"10.1016/j.jcou.2025.103131","DOIUrl":"10.1016/j.jcou.2025.103131","url":null,"abstract":"<div><div>Carbon formation has long posed a significant challenge in an application for dry reforming of methane (DRM). The focus of this study was to understand carbon formation over the surface of a hydrothermally synthesised ceria-zirconia catalyst with a small amount (0.10 wt%) of ruthenium dopant. The characterisation of textural properties for both fresh and post-reaction samples was conducted through nitrogen adsorption-desorption and X-ray diffraction analysis. Hydrogen temperature programmed reduction (H₂-TPR) was performed to examine reducibility of the catalyst samples before and after the DRM reaction. Characteristics of carbon formed during the DRM reaction at 600 °C (low temperature) and 850 °C (high temperature) were investigated using temperature programmed oxidation (TPO) coupled with a mass spectrometer, transmission electron microscopy (TEM) and Raman spectroscopy. The results revealed that at 600 °C, both amorphous carbon and graphitic carbon were observed, accounting for 0.70 wt% in total of the sample mass. On the other hand, only amorphous carbon was formed at 850 °C with 2.33 wt%. The average carbon deposition rates were 0.07 mg-C/(g-cat·h) at 600 °C and 0.23 mg-C/(g-cat·h) at 850 °C. Despite the carbon formation, it did not deactivate the catalysts at either temperature and remained high and stable catalytic conversions of CH₄ and CO₂, i.e., 41.3 % and 56.3 % at 600 °C, 92.6 % and 97.4 % at 850 °C over the 100 h DRM reaction.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103131"},"PeriodicalIF":7.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic pyrolysis of disposable masks: Fine-tuning nickel content ratios in catalysts for enhanced hydrogen-rich gas and carbon nanomaterial quality","authors":"Do Hyun Lee ,&nbsp;Ana Gabriela Mendoza Burgos,&nbsp;Hongryeol Kim,&nbsp;Jaewook Myung","doi":"10.1016/j.jcou.2025.103113","DOIUrl":"10.1016/j.jcou.2025.103113","url":null,"abstract":"<div><div>The widespread use and disposal of disposable masks have raised significant environmental and social concerns. In response to this issue, recent studies have explored resource recovery through the pyrolysis of discarded masks. However, limited research has been conducted on tuning the content ratios of active metal and applying various catalyst supports for targeting hydrogen (H₂) and carbon nanomaterials. To address this gap, we implemented a two-zone catalytic pyrolysis system. The nickel content ratio in non-noble catalysts (Ni/Al₂O₃, Ni/Zeolite 4 A, and LaNiO₃) was fine-tuned and applied in the catalytic reforming zone to optimize hydrogen production and graphite-like carbon nanomaterial formation. Impregnated catalysts (Ni(25)/Al₂O₃, Ni(25)/Zeolite 4 A) and LaNiO₃ demonstrated comparable results in terms of hydrogen concentration up to 64.6 vol% and the structural purity of carbon nanomaterial by Raman Spectroscopy, suggesting that the nickel content ratio on the catalyst plays a critical role in hydrogen production during catalytic pyrolysis. These findings are anticipated to contribute to the sustainable production of clean fuel gas products through catalytic pyrolysis, offering a viable solution to the disposal of waste masks.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103113"},"PeriodicalIF":7.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the synergy between Ru and K2CO3 supported on carbon nanofibers for the direct air capture and conversion of CO2","authors":"Freek Karaçoban,&nbsp;Yara Bonne,&nbsp;Tomas van Haasterecht,&nbsp;Johannes H. Bitter","doi":"10.1016/j.jcou.2025.103122","DOIUrl":"10.1016/j.jcou.2025.103122","url":null,"abstract":"<div><div>Dual functional materials for CO₂ capture (DFMs) combine a CO₂ sorbent and hydrogenation catalyst on the same support material. Here, we present a DFM specifically designed for direct air capture of CO₂ and subsequent conversion of the captured CO₂. The DFM consists of K₂CO₃ (sorbent) and ruthenium (catalyst) on a carbon nanofiber support. We will show that synergy between the sorbent and catalyst exists and we will explore the nature of this synergy. DFMs were tested in cycles of direct air capture and subsequent conversion of CO₂ in H₂. By comparing a physical mixture of sorbent and catalyst to the DFM it was found that conversion over the DFM was higher by more than threefold. This indicates that a synergy due to the physical interaction between sorbent and catalyst is present. Examination of the evolved gasses during the conversion phase showed that CO₂ that desorbed from the sorbent under H₂ re-adsorbed on the DFM. The amount of these re-adsorption sites, and therefore the conversion, increased with Ru loading. By varying the sorption time, K₂CO₃ loading (2.5–15 wt%), and Ru loading (0.8–3.1 wt%) it will be shown that 100 % of captured CO₂ can be converted at temperatures below 225 °C, as long as the amount of CO₂ does not exceed the number of re-adsorption sites.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103122"},"PeriodicalIF":7.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of economic feasibility for the microbial electrosynthesis-based β-farnesene production technology: Process modeling and techno-economic assessment","authors":"Young-Hwan Chu ,&nbsp;Yu Rim Lee ,&nbsp;Hui Su Kim ,&nbsp;Jiye Lee ,&nbsp;Myounghoon Moon ,&nbsp;Gwon Woo Park ,&nbsp;Sangmin Lee ,&nbsp;Soo Youn Lee","doi":"10.1016/j.jcou.2025.103110","DOIUrl":"10.1016/j.jcou.2025.103110","url":null,"abstract":"<div><div>Microbial electrosynthesis (MES) is a promising technology for converting CO₂ and renewable electricity into high-value hydrocarbons by utilizing electro-active microorganisms in combination with an electrode (i.e., the cathode). This study proposes a novel process for producing β-farnesene (C₁₅H₂₄), a bio jet-fuel precursor, from a CO₂ feedstock using the MES reactor coupled with a series of separation and purification unit operations. A metabolically-engineered <em>Rhodobacter sphaeroides</em> strain was employed as the cathodic biocatalyst to promote β-farnesene production. Based on the lab-scale experimental data from the MES reaction, a commercial-scale process model for β-farnesene production was developed and simulated to achieve an annual production capacity of 5000 metric tons. The techno-economic assessment (TEA) of the process revealed a levelized cost of production (LCOP) of $2.94/kg for β-farnesene, which is competitive with existing sugar-based technology, such as Amyris’s process, which has an LCOP of $4.9/kg. These findings prove that MES-based β-farnesene production technology is an attractive approach for producing bio jet-fuel in terms of price competitiveness and future market demand.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103110"},"PeriodicalIF":7.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and modeling assessment of CO2 EOR and storage performances in tight oil reservoir, Yanchang oilfield, China","authors":"Hong Yang ,&nbsp;Heng Wang ,&nbsp;Xiangzeng Wang ,&nbsp;Yuchen Xin ,&nbsp;Lijun He ,&nbsp;Zunsheng Jiao ,&nbsp;Jie Zou","doi":"10.1016/j.jcou.2025.103125","DOIUrl":"10.1016/j.jcou.2025.103125","url":null,"abstract":"<div><div>Previous experimental studies have shown that CO₂ injections can significantly enhance oil recovery in tight oil reservoirs and sequestrate CO₂ permanently. However, performance varies in places when the technologies are scaled up in field pilot tests. Therefore, investigating CO₂ EOR (Enhanced Oil Recovery) and storage mechanisms during CO₂ injection in field-scale tight sandstone reservoirs is crucial. In this study, laboratory Pressure-Volume-Texperature (PVT) tests and field pilot tests of CO₂ injection in a tight oil reservoir of the Yanchang oilfield in the Ordos Basin were analyzed. Reservoir simulations of CO₂ injections, including continuous and water alternative gas injections, are conducted after history matching. Laboratory PVT results show that oil viscosity decreases from 5.10 to 2.38 mPa·s as pressure reduces from initial formation conditions to atmospheric pressure, and swells oil to 1.50 times at a saturation pressure of 240.0 bar, which is larger than the minimum miscible pressure of 178.0 bar from the slim tube test. Reservoir simulation results of continuous and WAG injection scenarios show that oil production increases with CO₂ injection rate, and oil recovery increments are 21.6 % and 19.3 %, respectively, for Case 3 and Case 5. This is because reservoir pressure increases with more injected CO₂, resulting in higher displacement efficiency, and larger amounts of CO₂ can also lead to higher sweep efficiency in the lateral directions. However, CO₂ EOR efficiency decreases gradually after the CO₂ breakthrough. In addition, CO₂ migration in the lateral direction relates to the CO₂ injection rate. The areas of dissolved CO₂ are larger than those of gaseous CO_2, especially for WAG cases, while both increase with CO₂ injection rate due to a larger pressure gradient. The amount of CO₂ through structural trapping for the continuous injection cases is higher than solubility trapping, followed by residual trapping. Differently, the amounts of gaseous CO₂ are close to those of the dissolved CO₂ for the WAG cases due to water injection. The findings in this study are significant for understanding and demonstrating the CO₂ EOR, storage mechanisms in lab and field scales, and provide a valuable reference for scaling up the technologies in tight oil reservoirs.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103125"},"PeriodicalIF":7.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of cyclic carbonates by addition of CO2 to epoxides at atmospheric pressure","authors":"Fawaz Al Hussein ,&nbsp;Julen Larrucea ,&nbsp;Nicolás Otero ,&nbsp;Andreas Hartwig ,&nbsp;Henning Großekappenberg","doi":"10.1016/j.jcou.2025.103120","DOIUrl":"10.1016/j.jcou.2025.103120","url":null,"abstract":"<div><div>The fixation of carbon dioxide (CO₂) is a critical challenge for the sustainable synthesis of chemical compounds. This study presents a highly effective catalytic system for the synthesis of cyclic carbonates through the fixation of CO₂ on epoxides. The system is designed for ease of use, facilitated by the industrial-scale availability of the compounds and the moderate reaction conditions. The catalyst system employs tertiary amines in conjunction with halogenated alkali metal salts. Detailed kinetic studies of the cycloaddition reaction between epoxides and CO₂ were conducted using NMR spectroscopy. The reaction mechanism was thoroughly investigated and elucidated. The catalyst system demonstrates high efficacy with different kind of epoxides achieving high yields (&gt;90 %) and high selectivity (&gt;90 %). Notably, the entire process is conducted without solvents and at ambient pressure, highlighting its significant ecological benefits.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103120"},"PeriodicalIF":7.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical reduction of CO2 on S-triazine-based g-C3N4 surface modified with metal and nonmetal atoms: A DFT study","authors":"Hadis Pirdadeh Beyranvand,&nbsp;Zahra Tavangar","doi":"10.1016/j.jcou.2025.103123","DOIUrl":"10.1016/j.jcou.2025.103123","url":null,"abstract":"<div><div>The electrochemical CO₂ reduction reaction (CO₂RR) is one of the most effective methods for converting greenhouse gases into valuable products. This study explores the surface modification of s-triazine g-C₃N₄ to enhance its performance in CO₂RR through density functional theory calculations. Surface modification techniques, including doping, decorating, and co-decorating with metal and nonmetal atoms (Li, Be, B, C, N, O, F, Al, Si, P, S, and Cl) were used. The designed surfaces were screened according to their energetic and geometric parameters, as well as their ability to activate the adsorbed CO₂ molecule. The adsorption energy of CO₂ on the screened surfaces was found to be between − 0.70 and − 2.53 eV. The selectivity of the catalysts for CO₂RR was demonstrated by comparing the free energy changes for HER and the first step of CO₂ hydrogenation on their surfaces. Among the modified surfaces, 2B2C-C₃N₄ (limiting potential: − 0.33 eV) and 4B-C₃N₄ (limiting potential: − 0.83 eV) exhibited better performance and selectivity in producing CH₃OH and CH₄, respectively. These results demonstrate the significant impact of decorating the surface of g-C₃N₄ with carbon and boron atoms, which makes it an effective catalyst for converting CO₂ into useful fuels.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103123"},"PeriodicalIF":7.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel mobilization during single-stage aqueous mineral carbonation of serpentinized peridotite at 185 °C and PCO₂ of 100 bar","authors":"Błażej Cieślik ,&nbsp;Alicja Lacinska ,&nbsp;Anna Pietranik ,&nbsp;Maciej Róziewicz ,&nbsp;Artur Pędziwiatr ,&nbsp;Krzysztof Turniak ,&nbsp;Agata Łamacz ,&nbsp;Jakub Kierczak","doi":"10.1016/j.jcou.2025.103119","DOIUrl":"10.1016/j.jcou.2025.103119","url":null,"abstract":"<div><div>Forsterite-rich ultramafic rocks, such as serpentinized peridotites, are considered highly promising natural materials for mineral carbonation – a carbon capture and storage (CCS) technique aimed at reducing atmospheric carbon dioxide (CO₂) by sequestering carbon as carbonate minerals. These rocks are commonly characterized by a high content of divalent cations, including nickel (Ni^2 +), whose behavior and mobility during mineral carbonation remain insufficiently understood. This issue is critical, as the large-scale application of mineral carbonation may pose ecotoxicological risks by mobilizing specific metallic elements naturally occurring in ultramafic rocks. To elucidate possible Ni mobility during single-stage aqueous mineral carbonation, 15 g of powdered serpentinized peridotite was carbonated in a batch-type reactor for 96 hours at 185°C and a <em>P</em>_CO₂ of 100 bar. The experiment resulted in the dissolution of forsterite and the extensive crystallization of magnesite, demonstrating that the serpentinized peridotite is a highly effective natural material for permanent CO₂ storage in the single-stage carbonation processes. Nickel released during the dissolution of forsterite (approximately 50 % of the whole Ni budget) was mainly incorporated in newly formed Ni-rich phyllosilicates (more than 98 %) and a small portion was mobilized into the post-carbonation fluid (less than 2 %), reaching a concentration of approximately18 mg/kg after 96 hours. The presence of Ni in newly crystallized magnesite crystals has not been detected. These results suggest that the behavior of Ni during single-stage mineral carbonation is complex and requires careful monitoring to prevent potential negative impacts on the natural environment.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103119"},"PeriodicalIF":7.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative study on transition metal promoted Pt/SiO2 for oxidative dehydrogenation of propane with carbon dioxide","authors":"Heng-Bo Zhang,&nbsp;Guo-Qing Yang,&nbsp;Jiageng Li,&nbsp;Zhong-Wen Liu","doi":"10.1016/j.jcou.2025.103116","DOIUrl":"10.1016/j.jcou.2025.103116","url":null,"abstract":"<div><div>Transition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO₂ (CO₂-ODP). However, the criteria for selecting the transition metal are largely from trial and error. In this work, Pt/SiO₂ catalysts promoted with 3d transition metals (TMs) of Mn, Fe, Co or Ni (PtTM/SiO₂) are comparatively studied for CO₂-ODP. We found that the C₃H₆ selectivity and conversions of propane and CO₂ are clearly improved when TMs are introduced into Pt/SiO₂. Moreover, the apparent activation energy for the C₃H₆ formation during CO₂-ODP is decreased in the order of PtNi/SiO₂ &gt; PtCo/SiO₂ &gt; PtFe/SiO₂ &gt; PtMn/SiO₂. Among the investigated catalysts, PtMn/SiO₂ is the most active and selective catalyst for the activation of C-H bonds in propane to produce C₃H₆ while PtNi/SiO₂ is the most favorable catalyst for the formation of by-products via the dry reforming of propane with CO₂ and propane cracking. Essentially, the catalytic results are well explained as the increased electron density of Pt over the PtTM/SiO₂ catalysts via the enhanced electron transfer from TM having a smaller electronegativity. This understanding is important for the rational design of a high-performance Pt-based bimetallic catalyst for CO₂-ODP.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103116"},"PeriodicalIF":7.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zn-gallate catalyzed synthesis of high-performance CO2-polymers with tunable composition and architecture","authors":"Jaeho Kim ,&nbsp;Kihyuk Sung ,&nbsp;Ju-Hyung Chae ,&nbsp;In-Hwan Lee ,&nbsp;Hye-Young Jang","doi":"10.1016/j.jcou.2025.103114","DOIUrl":"10.1016/j.jcou.2025.103114","url":null,"abstract":"<div><div>To address the urgent need for CO₂ utilization in climate change mitigation, this study presents a highly efficient Zn-gallate catalyzed polymer synthesis, directly incorporating CO₂ alongside lactide and propylene oxide. This versatile catalyst facilitates both one-step random and sequential polymerization strategies, providing access to a diverse range of CO₂-polymers. By precisely controlling composition and architecture, we synthesized random terpolymers, incorporating CO₂, with catalytic activities of 1.7–3.6 kg/g-cat and 9.4 − 36 wt% PLA, and block copolymers involving CO₂ with catalytic activities of 0.7–3.0 kg/g-cat and 15 − 76 wt% PLA. These precisely tailored CO₂-polymers display their potential to replace fossil-fuel-derived plastics like LDPE.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"97 ","pages":"Article 103114"},"PeriodicalIF":7.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}