Energy & Fuels最新文献

{"title":"Multiscale Pore Characterization of the New Albany Shale: Insights from Complementary Analytical Techniques","authors":"Khawaja Hasnain Iltaf,&nbsp;Qinhong Hu*,&nbsp;Majie Fan,&nbsp;Prince Oware,&nbsp;Qiming Wang,&nbsp;Chen Zhao,&nbsp;Tao Zhang,&nbsp;Rizwan Sarwar Awan,&nbsp;Danish Khan and Ali Raza,&nbsp;","doi":"10.1021/acs.energyfuels.5c0086210.1021/acs.energyfuels.5c00862","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00862https://doi.org/10.1021/acs.energyfuels.5c00862","url":null,"abstract":"<p >The extraction of hydrocarbons from shale formations has become increasingly important, necessitating a deeper understanding of their morphological and structural characteristics, particularly pore types and pore structure parameters, which are essential for determining the storage and productive potential of shale oil reservoirs. This research addresses this need by investigating the distribution, formation, and mineralogical relationships of pores in the three lithofacies of the New Albany Shale (NAS) in the Illinois Basin. Utilizing scanning electron microscopy (SEM), nitrogen (N₂) physisorption, small-angle X-ray scattering (SAXS), X-ray diffraction (XRD), polarizing microscopy, and TOC analyses, the study comprehensively analyzes the pore structure and morphology across these lithofacies. The Brunauer–Emmett–Teller (BET) specific surface area (SSA) ranges from 0.3 to 24.6 m²/g (average of 5.5 m²/g), with the total pore volume (TPV) ranging from 0.002 to 0.040 cm³/g (average 0.012 cm³/g). The results reveal that NAS exhibits a heterogeneous pore structure, characterized by various pore sizes and shapes, varying from ink-bottle-shaped in lithofacies NAS-1 and NAS-2 to predominantly wedge-shaped in lithofacies NAS-3. Inorganic pores, including mesopores and macropores, play a significant role in the pore system, and their presence is influenced by the specific lithofacies types within NAS. Organic matter (OM) pores exhibit limited development across all lithofacies, which could be attributed to the lower thermal maturity. In contrast, microfractures associated with organic matter and brittle minerals are comparatively well-developed. The NAS-2 lithofacies is particularly important for fluid migration due to its favorable pore structure parameters. A detailed understanding of the mechanisms of pore formation and their structural attributes across different minerals and lithofacies is crucial for advancing the exploration and development of shale oil and gas deposits.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10356–10373 10356–10373"},"PeriodicalIF":5.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2-Assisted Propane Dehydrogenation over Lithium-Promoted PtZn4@S-1: Unraveling the Active Sites","authors":"Xiangyang Ji,&nbsp;Yuhui Xia,&nbsp;Guilin Liu,&nbsp;Baiting Long,&nbsp;Hongyin Chen,&nbsp;Jian Liu and Weiyu Song*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0129410.1021/acs.energyfuels.5c01294","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c01294https://doi.org/10.1021/acs.energyfuels.5c01294","url":null,"abstract":"<p >Constructing a bifunctional active site to boost propane dehydrogenation (PDH) in tandem with the reverse water gas reaction (RWGS) showed great potential in meeting the supply of olefins, while the crucial role of the bifunctional active sites is still unclear. Herein, a combination of kinetic and spectroscopic evidence was utilized to confirm the nonuniform bifunctional site distribution of the PtZn₄@S-1 catalyst. Then, lithium atoms were incorporated to tune the bifunctional sites. A series of characterizations indicated that the introduction of lithium suppressed the incorporation of Zn atoms into the framework of silicalite-1 zeolite. As a result, the nanosized Pt_<i>x</i>Zn_<i>y</i> clusters were converted into larger Li_<i>z</i>Pt_<i>x</i>Zn_<i>y</i> clusters with a higher Pt–Pt coordination number. This led to decreased PDH activity and stability, which confirmed that the real active sites of PDH are nanosized Pt_<i>x</i>Zn_<i>y</i> clusters anchored by the framework Zn atoms. However, the lithium atoms showed a volcano curve with CO₂ conversion. When the atomic mole ratio of Li to Pt was 34, it showed the highest CO₂ conversion, indicating that the Si-OLi species and the Li_<i>z</i>Pt_<i>x</i>Zn_<i>y</i> clusters were directly involved in the CO₂ activation process. Further treatment of the Li₃₄PtZn₄@S-1 catalysts with water washing converted the Si-OLi species back to Si–OH species. This change had little influence on the PDH activity, while the RWGS showed nearly no activity, confirming that the real active site of CO₂ activation is the synergy between the Li_<i>z</i>Pt_<i>x</i>Zn_<i>y</i> clusters and Si-OLi species.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10572–10580 10572–10580"},"PeriodicalIF":5.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bifunctional TeS/TeP2O7 Nanocomposite for Enhanced Energy Storage and Hydrogen Evolution","authors":"Mudassar Maraj,&nbsp;Amima Butt,&nbsp;Sarmad Ali*,&nbsp;Ali Haider,&nbsp;Faisal Ali,&nbsp;Naeem Abas Kalair,&nbsp;Nian Li*,&nbsp;Zhenyang Wang and Xiuhong Li*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0050810.1021/acs.energyfuels.5c00508","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00508https://doi.org/10.1021/acs.energyfuels.5c00508","url":null,"abstract":"<p >Finding cost-effective and efficient nanomaterials to address the energy crisis is a significant challenge for energy production and storage technologies. Herein, tellurium-based sulfide (TeS) and phosphate (TeP₂O₇) as well as their nanocomposite (TeS/TeP₂O₇) are prepared via a solvothermal process. The structure of these TeS and TeP₂O₇ based nanomaterials are characterized by XRD, SEM, EDX, TEM, and HRTEM, while their electrochemical analysis involves cyclic voltammetry, electrochemical impedance spectroscopy, and linear sweep voltammetry. The synthesized materials exhibit a large surface area and porous structure, forming spherical nanoflowers with petal thicknesses of about 20–25 nm, which enables boosting the electrochemical performance. The prepared electrode of the TeS/TeP₂O₇ active material shows redox behavior and a noticeable improvement in specific capacitance (<i>C</i>_s) of 1552.2 Fg^–1 at 1 Ag^–1 calculated from galvanostatic charge–discharge (GCD) measurements. These nanocomposites also show excellent cyclic stability with capacity retention of 91.5% after 5000 GCD cycles. In addition to its energy-storage capabilities, the TeS/TeP₂O₇ nanocomposite exhibits exceptionally improved electrocatalytic performance with lower HER overpotential (281 mV) and Tafel slope (44 mVdec^–1) and also higher H₂ production rate (197 μmolh^–1g^–1). The spherical nanoflowers of TeS/TeP₂O₇ highlight the material’s potential for dual applications in supercapacitor electrodes as well as efficient catalysts for hydrogen production.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10659–10673 10659–10673"},"PeriodicalIF":5.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review on Photocatalytic and Electrocatalytic Reduction of CO2 into C2+ Products: Recent Advances and Future Perspectives","authors":"Hongtao Dang,&nbsp;Bin Guan*,&nbsp;Lei Zhu,&nbsp;Junyan Chen,&nbsp;Zhongqi Zhuang,&nbsp;Zeren Ma,&nbsp;Xuehan Hu,&nbsp;Chenyu Zhu,&nbsp;Sikai Zhao,&nbsp;Kaiyou Shu,&nbsp;Junjie Gao,&nbsp;Luyang Zhang,&nbsp;Tiankui Zhu and Zhen Huang,&nbsp;","doi":"10.1021/acs.energyfuels.5c0037210.1021/acs.energyfuels.5c00372","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00372https://doi.org/10.1021/acs.energyfuels.5c00372","url":null,"abstract":"<p >The collection of CO₂ and its subsequent transformation into valuable compounds have drawn increased global attention in recent decades. It is commonly recognized that the final product of every combustion process, whether biological or chemical, is CO₂, a fully oxidized, thermodynamically stable, and chemically inert molecule. Owing to the chemical inertness of CO₂, it adsorbs and reacts slowly on catalyst surfaces and has a poor capacity to form chains. It also makes it simpler to produce C₁ compounds and more challenging to produce products that are higher than C₂. Many scientific research teams have focused on CO₂ hydrogenation to prepare C₁ chemical feedstocks (such as CH₄, CH₃OH, CO, HCOOH, etc.), and significant progress has been made. However, from the point of view of economic value, the synthesis of higher-order multicarbon products (C₂₊) is preferable to that of C₁ products due to their higher energy density and broader applicability. Considering the rapid development of catalytic reduction of CO₂ into C₂₊ products, it is necessary to have a comprehensive understanding and timely, appropriate summary of these technologies. Therefore, this review aims to present a comprehensive and critical review of the research status and development trend of catalytic reduction of CO₂ into C₂₊ products.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10109–10133 10109–10133"},"PeriodicalIF":5.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational Evaluation of N8 Polynitrogen-Stabilized Single-Atom Catalysts for CO2 Reduction","authors":"Melisa Bilgili,&nbsp;Xianqin Wang and Joshua Young*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0085610.1021/acs.energyfuels.5c00856","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00856https://doi.org/10.1021/acs.energyfuels.5c00856","url":null,"abstract":"<p >Single-atom catalysts (SACs) show significant promise for the electrochemical CO₂ reduction reaction (CO₂RR) owing to their unique structures and properties. Moreover, strong metal–support interactions mean that their activity is highly tunable by the substrate. Recently, a novel N₈ polynitrogen (PN) chain was successfully synthesized by a cyclic voltammetry approach; it has highly active lone pairs and acts as an electron donor, allowing for the enhancement of SACs stabilized on it, as evidenced by previous work showing its propensity toward selective hydrogenation of acetylene to ethylene. In this work, we use density functional theory (DFT) calculations to investigate the CO₂RR to C1 products (carbon monoxide, formic acid, methane, and methanol) on Pd and Ni SACs supported on N₈ PN. First, we find that under the traditional proton-coupled electron transfer mechanism, formic acid is the most likely product on both Pd-N₈ and Ni-N₈. We also investigate a pathway in which H₂ first preferentially adsorbs to the N₈ PN chain and splits, causing a spontaneous reconfiguration of PN and allowing for facile proton transfer. In both cases, if CO is formed, further reduction to methanol is likely. Finally, methane production is highly unfavorable due to the large energy barriers required to form the *C intermediate. Overall, this work provides insights into an important set of reactions on a novel, highly active catalyst material and demonstrates how the selectivity of the CO₂RR can be tuned by altering the SAC chemistry and substrate.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10562–10571 10562–10571"},"PeriodicalIF":5.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and CO2 Adsorption Performance of the B–Cu Codoping Walnut Shell Biochar","authors":"Liqiang Zhang,&nbsp;Ruiqi Liu*,&nbsp;Riyi Lin,&nbsp;Lijuan Wang,&nbsp;Yiya Wang and Ningmin Zhu,&nbsp;","doi":"10.1021/acs.energyfuels.5c0085810.1021/acs.energyfuels.5c00858","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00858https://doi.org/10.1021/acs.energyfuels.5c00858","url":null,"abstract":"<p >Biochar has garnered increasing attention in the field of CO₂ adsorption. The B–Cu codoping activated carbon was prepared. Many characterization techniques were used to analyze the effects of the Cu loading temperature and loading amount on the microstructure and physicochemical properties of the activated carbon. The CO₂ adsorption performance of the activated carbon was evaluated, and its adsorption mechanism was analyzed. The results indicated that Cu doping enriched the pore structure and surface functional groups of the activated carbon. As the Cu loading temperature (200 ∼ 500 °C) and Cu loading amount (5 ∼ 20 wt %) increased, the CO₂ adsorption capacity of the activated carbon first increased and then decreased. The M15-400 activated carbon exhibited the highest specific surface area (1572.80 m²/g) and microporosity (93.91%). The CO₂ adsorption capacity of the B–Cu codoping activated carbon M15-400 was 18.35% higher than that of the undoped activated carbon CK1-1-700, and it showed satisfactory cyclic performance. Both physical and chemical adsorptions were involved. Both monolayer and multilayer adsorption coexisted. This study revealed the synergistic mechanism of nonmetal and metal element coupling on the structure and CO₂ adsorption performance of a walnut shell biochar. This study will provide a reference for the efficient adsorption of the biochar.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10452–10464 10452–10464"},"PeriodicalIF":5.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Situ Solid-State Synthesis of Nitrogen-Enriched Porous Carbon Nanosheets from Petroleum Coke for Lithium-Ion Hybrid Capacitors","authors":"Santhi Maria Benoy,&nbsp;Anoushka K. Das,&nbsp;Debashis Sarmah,&nbsp;Meenakshi Pawar,&nbsp;Manjusha V. Shelke and Binoy K. Saikia*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0071610.1021/acs.energyfuels.5c00716","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00716https://doi.org/10.1021/acs.energyfuels.5c00716","url":null,"abstract":"<p >Lithium-ion capacitors (LICs) have emerged as a next-generation energy storage technology, offering a unique balance between the high energy density of lithium-ion batteries and the fast charge–discharge capability of supercapacitors. However, the development of high-performance anode materials remains a major challenge due to the trade-off between capacity, rate capability, and long-term cycling stability. Herein, we report a novel in situ solid-state synthesis approach for the scalable production of nitrogen-enriched porous carbon nanosheets (mBG1) from petroleum coke, an abundant industrial byproduct. The hierarchical porosity and optimized nitrogen functionalities of mBG1 facilitate rapid lithium-ion diffusion, enhanced electronic conductivity, and robust structural stability. Electrochemical characterization in lithium-ion half-cells demonstrates an exceptional specific capacity of 388 mAh g^–1 at 0.1 A g^–1, with an outstanding capacity retention of 92.7% over 1000 cycles (261.2 mAh g^–1) at 1 A g^–1. To validate its practical applicability, a full LIC coin cell was fabricated using mBG1 as the anode and commercial super activated carbon (super AC) as the cathode, achieving a specific capacitance of 44 F g^–1 at 1 A g^–1, a high energy density of 93.29 Wh kg^–1 at 0.5 A g^–1, and an impressive power density of 20.34 kW kg^–1 at 10 A g^–1, with 74% capacitance retention after 5000 cycles. The integration of ultrahigh nitrogen doping, hierarchical porosity, and scalable synthesis techniques offers a new pathway for designing next-generation lithium-ion capacitors with enhanced efficiency, stability, and economic viability. These findings establish mBG1 as a high-performance, scalable, and sustainable anode material for next-generation LICs, offering a transformative pathway for the valorization of petroleum coke in advanced energy storage applications.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 21","pages":"10053–10069 10053–10069"},"PeriodicalIF":5.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clathrate Hydrate Desalination Technology: A Review of Recent Progress and Future Perspectives","authors":"Manas Rehan Dakkumalla,&nbsp;Ponnivalavan Babu and Nagu Daraboina*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0168010.1021/acs.energyfuels.5c01680","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c01680https://doi.org/10.1021/acs.energyfuels.5c01680","url":null,"abstract":"<p >Water scarcity poses a significant global challenge, with Earth’s hydrosphere holding vast water reserves of which only glaciers, groundwater, and surface water come under freshwater resources. However, these sources of freshwater are being depleted due to global warming and human activities, resulting in water stress and pollution, which adversely affect health, food production, and environmental sustainability. To overcome this challenge, innovative desalination technologies have been developed. In this context, we explore diverse types of saline waters and their compositions and outline the desalination process. Clathrate hydrate-based desalination has emerged as a promising technology for generating fresh water from saline sources. Hydrates selectively capture water molecules from saline solutions, offering energy-efficient and environmentally friendly desalination. This review comprehensively examines the literature on clathrate hydrate-based desalination, including discussions on thermodynamics, kinetics, and energy requirements. Furthermore, it compares clathrate hydrate-based desalination to existing technologies and discusses future directions for commercialization.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 21","pages":"9762–9785 9762–9785"},"PeriodicalIF":5.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Mesoscale Structure Evolution of the Carbon Electrode during the Baking Process Based on X-ray Computed Tomography","authors":"Kejia Qiang,&nbsp;Jinghong Zhang,&nbsp;Bo Han,&nbsp;Jie Li and Hongliang Zhang*,&nbsp;","doi":"10.1021/acs.energyfuels.5c0035310.1021/acs.energyfuels.5c00353","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c00353https://doi.org/10.1021/acs.energyfuels.5c00353","url":null,"abstract":"<p >The baking process plays a decisive role in determining the physicochemical properties of the carbon electrode used in aluminum production. Although previous studies have revealed the relationship between the performance of the carbon electrode and the baking process through experimental and numerical modeling approaches, the formation mechanism of the porous structure during the baking process is not yet fully understood, which has hindered further optimization of the electrode performance. To systematically investigate the structure and performance changes of the carbon electrode during the baking process, this study employed computed tomography (CT) scanning technology to reconstruct the three-dimensional grains-matrix-pore system and further revealed its mesoscale structure evolution. Combined with the digital volume correlation (DVC) method and experimental validation, the study accurately characterized structural deformation and the dynamic behaviors of pores, uncovering the pore formation mechanism and clarifying the effects of different baking stages on electrode performance. The results show that the porous structure (pore size &gt;100 μm) primarily formed during the low-temperature baking stage (room temperature to 410 °C). During this process, most newly formed pores exhibited a many-to-many connectivity pattern with the original pores and established a complex gas discharge network. This finding guides the identification of the key temperature range during the baking process of carbon electrodes, particularly between 240 and 410 °C. Measures such as slowing the heating rate to allow for the uniform and gradual release of volatiles may help reduce the formation of large pores, improve the structural integrity of the electrode, and consequently enhance the electrical conductivity and density of the carbon electrode.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10526–10536 10526–10536"},"PeriodicalIF":5.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetic Characterization of CH4 Hydrate Formation in Metal–Organic Framework Nanomaterials and l-Tryptophan Complex Systems","authors":"Xiangen Wu,&nbsp;Yaqin Shi* and Lin Wang,&nbsp;","doi":"10.1021/acs.energyfuels.5c0111010.1021/acs.energyfuels.5c01110","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c01110https://doi.org/10.1021/acs.energyfuels.5c01110","url":null,"abstract":"<p >Metal–organic frameworks (MOFs) and amino acids are promising hydrate promoters for improving methane hydrate formation kinetics in solid natural gas technology. This study examines the effects of four MOFs─MIL-101(Cr), MIL-101(Fe), ZIF-8_CP, and ZIF-8_MC─on methane hydrate formation in both pure water and <span>l</span>-tryptophan-containing systems. MIL-101(Cr) and MIL-101(Fe) significantly reduced the induction time by 38% and 44%, respectively, compared to pure water, while ZIF-8_CP and ZIF-8_MC extended it by 145% and 90%, respectively. During the growth phase, MIL-101(Cr) exhibited a notable promoting effect, while MIL-101(Fe) and ZIF-8_MC had minimal influence. In contrast, ZIF-8_CP markedly suppressed both methane uptake and absorption rate. A strong synergistic effect was observed between MIL-101(Cr) and <span>l</span>-tryptophan, reducing induction time to 33% of that in pure water and achieving the highest gas uptake rate. Conversely, ZIF-8_MC and ZIF-8_CP counteracted the effects of <span>l</span>-tryptophan, with the kinetics of the 0.5 wt % ZIF-8_CP + 0.5 wt % <span>l</span>-tryptophan system closely resembling those of pure water. Scanning electron microscopy and contact angle analyses suggest that MOFs’ hydrophilicity and polyhedral structure primarily influence nucleation, while particle size plays a dominant role in the growth phase. These findings provide new insights into the design of MOF-based hydrate promoters for enhanced methane storage and transport applications.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 22","pages":"10544–10553 10544–10553"},"PeriodicalIF":5.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}