Energy & Fuels最新文献

{"title":"Preservation of CO2 Hydrates with Cyclopentane and Ethylcyclohexane near the Melting Point of Ice under Atmospheric Pressure","authors":"Motoi Oshima*,&nbsp;, ,&nbsp;Satoshi Takeya,&nbsp;, ,&nbsp;Yusuke Jin,&nbsp;, ,&nbsp;Kiyofumi Suzuki,&nbsp;, and ,&nbsp;Jiro Nagao,&nbsp;","doi":"10.1021/acs.energyfuels.5c02959","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c02959","url":null,"abstract":"<p >In this study, we investigated the preservation of CO₂ hydrates in organic liquids near the melting point of ice at atmospheric pressure under isothermal temperature conditions to enable CO₂ storage and transportation using gas hydrates under milder temperature and pressure conditions. Cyclopentane (CP), ethylcyclohexane (ECH), and 2-ethyl-1-hexanol (2-EH) were used as organic liquids and their effects on the dissociation behaviors of the CO₂ hydrate were evaluated. After 24 h, the preservation ratios of CO₂ hydrate powders with CP or ECH were ∼70% at 265 K and ∼60% at 269 K. In contrast, the preservation ratios without organic liquids were ∼30% at 265 K and ∼10% at 269 K. The analysis revealed that CP promoted the formation of CP hydrate shells on the CO₂ hydrate surface during dissociation, whereas ECH facilitated ice shell formation. However, the CO₂ hydrate with 2-EH dissociated rapidly within approximately 1 h at 265 and 269 K because 2-EH inhibited ice shell formation. These results indicate that hydrophobic CP and ECH enhance the CO₂ hydrate stability by enabling the formation of shell structures by CP hydrate or ice that encapsulates the hydrates and prevents CO₂ gas release.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19342–19349"},"PeriodicalIF":5.3,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242131","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":"Ammonia/Hydrogen and Cracked Ammonia Combustion","authors":"Giovani Battista Ariemma,&nbsp;, ,&nbsp;Giancarlo Sorrentino*,&nbsp;, ,&nbsp;Mara de Joannon,&nbsp;, ,&nbsp;Raffaele Ragucci,&nbsp;, and ,&nbsp;Pino Sabia,&nbsp;","doi":"10.1021/acs.energyfuels.5c02759","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c02759","url":null,"abstract":"<p >Ammonia is a promising energy carrier for energy system decarbonization, although several drawbacks affect its combustion process. Coupling moderate or intense low-oxygen dilution (MILD) combustion with the use of high reactivity fuels allows to improve NH₃ combustion. In particular, H₂ addition may be a feasible strategy, considering the high proportion of H₂ achievable by NH₃ partial cracking. The present study focuses on MILD combustion effectiveness in ensuring high stability and low-NO_<i>x</i> emissions for NH₃/H₂ blends. Influence of both equivalence ratio and H₂ addition was experimentally investigated in a cyclonic reactor. Furthermore, the results were directly compared with those obtained with cracked NH₃ mixtures (NH₃/H₂/N₂). Results for NH₃/H₂ blends strengthen the fuel flexibility of the cyclonic reactor, which allows total conversion of the fuel mixtures by ensuring operating temperatures always lower than 1400 K, independently of the equivalence ratio and the fuel blend composition. In particular, H₂ addition increases NH₃ reactivity, whereas increasing NO_<i>x</i> emissions with respect to pure ammonia. Instead, for pure H₂ and pure NH₃, they always stay lower than 40 and 100 ppm, respectively. For cracked NH₃ mixtures, the fuel dilution content by N₂ does not affect the NH₃/H₂ combustion behavior under MILD conditions. Instead, for 100% NH₃ cracking (75%H₂-25%N₂ mixture), H₂ dilution by N₂ entails a more uniform reaction zone than not diluted H₂ case, further limiting NO_<i>x</i> formation by avoiding the occurrence of hot-spot regions within the reactor.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19512–19525"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.5c02759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of Super-Hydrophobic Silicalite-1 Hollow Fiber Membranes for Hydrogen Separation Processes","authors":"Seyed Mojtaba Mirfendereski*,&nbsp; and ,&nbsp;Tayebeh Mazaheri,&nbsp;","doi":"10.1021/acs.energyfuels.5c04006","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c04006","url":null,"abstract":"<p >This study presents a set of four complementary synthesis strategies for fabricating superhydrophobic silicalite-1 zeolite membranes, specifically designed for H₂/CO₂ separation under humid conditions. Sequential support masking, dual-layer seeding, variable-temperature hydrothermal growth, and cationic linkage-assisted seeding collectively suppress Al leaching, align seeds, and steer defect-free crystal growth. Structural and morphological characterization, together with gas permeation analyses, confirmed the formation of dense, highly crystalline, and strongly hydrophobic zeolite layers. The optimized membrane exhibits a Si/Al ratio of 249 (typical silicalite-1 &lt; 100), a water contact angle of 157° (conventional &lt;120°), and an H₂/CO₂ separation factor of 4.7 without sacrificing permeance. Separation performance scales with hydrophobicity, underscoring the importance of minimal Al incorporation and void-free crystals. This scalable synthesis delivers robust membranes suited for post-water gas shift hydrogen purification and high-temperature membrane-reactor integration.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19526–19536"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242100","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":"Exploration of the Migration, Miscibility, and Storage Characteristics of Impure CO2 in Offshore Low-Permeability Oilfields Based on Online LF-NMR","authors":"Yiqi Zhang,&nbsp;, ,&nbsp;Qing Liu,&nbsp;, ,&nbsp;Shenglai Yang*,&nbsp;, ,&nbsp;Lufei Bi,&nbsp;, ,&nbsp;Shuai Zhao,&nbsp;, ,&nbsp;Beidong Wang,&nbsp;, ,&nbsp;Jiangtao Hu,&nbsp;, ,&nbsp;Bin Shen,&nbsp;, and ,&nbsp;Xinyuan Gao*,&nbsp;","doi":"10.1021/acs.energyfuels.5c03719","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03719","url":null,"abstract":"<p >The co-reinjection of oilfield-produced gas and CO₂ will enhance the economic efficiency of greenhouse gas (CO₂, CH₄) storage, which is conducive to the green transformation of the upstream petroleum industry. However, the actual migration and storage characteristics of impure CO₂ have not yet been clarified. This paper conducts a comprehensive study on the migration, miscibility, and storage characteristics of impure CO₂ in offshore low-permeability oilfields based on online LF-NMR. The results show that for impure CO₂ flooding, the miscible state affects the recovery by more than 14.8% under the same injection parameters, which is the fundamental cause affecting migration and recovery. Impurity gases affect the displacement process through a dual mechanism of reducing the degree of miscibility and enhancing the pressure gradient, which accelerates gas breakthrough and channeling. The impact of low CH₄ concentration on recovery is less than 1.9% under miscible conditions, showing the potential for co-displacement and storage with CO₂. The migration of oil and gas in porous media shows staged characteristics. In the initial stage, the large and medium pores are preferentially utilized through a physical driving force, and impurity gas can enhance this process. In the middle stage, the gas breaks through the lower limit of small-pore utilization through the diffusion-extraction-miscibility effect. After breakthrough, it mainly maintains the continuous utilization capacity of the medium and small pores through miscibility, extraction, and the carrying of oil in the pores around the channeling channel, while impurity gas weakens this process. The sweep of the injected gas in the porous medium showed spatial heterogeneity. The gas can be more sweep-balanced in the front section due to the resistance effect, with a sweep efficiency exceeding 85%, contributing to the main recovery and storage space. Due to the influence of fingering and gravity, the mesopores and macropores in the middle and rear regions have difficulty providing excessive storage and recovery space. This article provides valuable insights for understanding the migration and storage characteristics in the impure CO₂ flooding process.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19144–19156"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242104","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":"Control Mechanisms of Shale Reservoir Material Composition on Wettability and Two-Phase Flow during Imbibition","authors":"Xueyuan Li,&nbsp;, ,&nbsp;Jin Xu,&nbsp;, ,&nbsp;Shaojie Zhang,&nbsp;, ,&nbsp;Shangbin Chen*,&nbsp;, ,&nbsp;Yang Wang,&nbsp;, ,&nbsp;Chu Zhang,&nbsp;, ,&nbsp;Zhen Lei,&nbsp;, ,&nbsp;Feng Zhu*,&nbsp;, and ,&nbsp;Peng Liu,&nbsp;","doi":"10.1021/acs.energyfuels.5c03450","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03450","url":null,"abstract":"<p >Shale’s minerals and organic carbon have high wettability differences, and they significantly affect the two-phase flow of gas and water, but the mechanisms are still unclear. In order to reveal the mechanisms, shale samples from the Wufeng–Longmaxi Formation on the southern margin of the Sichuan Basin were selected. The samples were analyzed based on scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and C–S analysis, and the porosity and permeability of the samples were characterized by gas porosity and pressure pulse decay methods. The contact angle measurements, spontaneous imbibition experiments, and two-phase flow simulations were carried out. For shale from the Lower Longmaxi Formation, the results showed that the clay content decreased, and the total organic carbon (TOC) content increased as the burial depths increased. The thermal maturity of organic carbon falls from high-mature to overmature, and its variations are small. The contact angle of water on the shale surface increases with an increase in TOC and increases with a decrease in clay content, resulting in a significant decrease in shale hydrophilia. The spontaneous imbibition experiments and the simulation results show that the increase in TOC caused an increase in nonwetting organic pores, leading to a significant decrease in the maximum water saturation in shale. The maximum capillary pressure becomes smaller as the permeability increases, while a higher TOC slows the decreasing rate of capillary pressure with water saturation, and the power index of the capillary force equation becomes smaller. As the TOC increases, the interval of the relative permeability curve narrows, the maximum relative permeability of water decreases significantly, the rate of water relative permeability with water saturation increases, and the power index in the relative permeability equation becomes larger. Therefore, organic carbon can inhibit the water flow in shale by altering the maximum water saturation, water relative permeability, and capillary force.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19261–19273"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242105","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":"Visible-Light Driven Fumarate Production from Low-Concentration CO2 and Biobased Material with a Photo/Biocatalytic System","authors":"Atsuya Horikawa,&nbsp; and ,&nbsp;Yutaka Amao*,&nbsp;","doi":"10.1021/acs.energyfuels.5c03633","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03633","url":null,"abstract":"<p >The unsaturated dicarboxylic acid fumaric acid is an essential material to yield biodegradable engineering plastics. Fumarate, synthesized using benzene and <i>n</i>-butane derived from petroleum as raw materials, is anticipated to take the place of synthesis methods using biobased materials and CO₂ gas with renewable energy such as solar light. In this communication, fumarate production using low-concentration gaseous CO₂ (less than 15% of emissions from coal-fired power plants) and biobased pyruvate by applying a multibiocatalyst composed of pyruvate carboxylase (PC), recombinant malate dehydrogenase (rMDH), and fumarase (FUM) to visible-light driven NADH regeneration with triethanolamine (TEOA), zinc 5,10,15,20-tetrakis-4-(trimethylaminio)phenylporphyrin (ZnTMAP⁴⁺), and pentamethylcyclopentadienyl (Cp*) rhodium 2,2’-bipyridine (bpy) ([Cp*Rh(bpy)(H₂O)]²⁺) in the presence of acetyl-CoA and ATP is achieved. Under optimized reaction conditions, the conversion yield for pyruvate to fumarate in this system was quoted to be approximately 1.2% under low-concentration gaseous CO₂ conditions after 5 h of irradiation.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19537–19543"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242166","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":"Recent Advances and Challenges in Catalysts for Oxidative Desulfurization of Fuel Oils: A Review","authors":"Li Yu,&nbsp;, ,&nbsp;Rui Liu,&nbsp;, ,&nbsp;Yuyao Li,&nbsp;, and ,&nbsp;Ruixin Wang*,&nbsp;","doi":"10.1021/acs.energyfuels.5c02879","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c02879","url":null,"abstract":"<p >The stringent rules of sulfur content and the increasing consumption of fuel oils have motivated researchers to develop the desulfurization technologies of liquid fuels. Oxidative desulfurization (ODS) has been one of the most promising alternative strategies owing to its lower cost and mild operating condition. Thereinto, the catalyst is crucial. The present research importantly surveys recent advances in transition metal-based catalysts, such as transition metal oxides, transition metal nitrides, transition metal carbides, polyoxometalates, and single-atom catalysts. More importantly, approaches for enhancing their catalytic activity through supporting them onto various carriers have been extensively investigated and reported. Herein, the advantages, drawbacks, and prospects of each catalyst for the ODS of liquid fuels and its improved methods through metal–support interactions (MSI) have been reviewed. Additionally, the structure–activity relationships and the mechanisms of the ODS of various catalysts adjusted by MSI have been discussed. The new catalysts with excellent performances for accelerating the industrial applications of ODS need to be more investigated.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19061–19092"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242099","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":"Room-Temperature Hydrogenation of Phenol to Cyclohexanol Using Ru/C Nanosphere Catalysts","authors":"Cheng-Cheng Liu,&nbsp;, ,&nbsp;Xiao-Qin Zhao,&nbsp;, ,&nbsp;Jia-Wen Shuai,&nbsp;, ,&nbsp;Pan Guo,&nbsp;, ,&nbsp;Zhen-Tao Bian,&nbsp;, ,&nbsp;Li-Gang Zhang,&nbsp;, ,&nbsp;De-Jin Zhang*,&nbsp;, and ,&nbsp;Cong Wang*,&nbsp;","doi":"10.1021/acs.energyfuels.5c03885","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03885","url":null,"abstract":"<p >The catalytic hydrogenation of phenol to cyclohexanol is of great industrial significance in chemical manufacturing. However, achieving efficient hydrogenation under mild conditions remains a key challenge in this field. Herein, we successfully synthesized a Ru/CNS catalyst via the NaBH₄ reduction method, which comprises highly dispersed Ru nanoparticles supported on phenolic resin-derived carbon nanospheres (CNS), and evaluated its performance in the hydrogenation of phenol to cyclohexanol. At room temperature and 1 MPa H₂, with a phenol-to-catalyst mass ratio of 3.3, the catalyst achieved complete phenol conversion within 30 min, accompanied by more than 99% selectivity to cyclohexanol. Recycling experiments confirm the excellent stability of Ru/CNS, which also exhibits high efficacy in the hydrogenation of phenol derivatives under mild conditions, converting them to the corresponding cyclohexanol products. XPS and FTIR characterizations reveal that the superior catalytic performance of Ru/CNS over Ru/C stems from the abundant C–O and nitrogen-containing functional groups on the CNS surface. These groups efficiently anchor Ru nanoparticles, significantly improving their dispersion and increasing the content of metallic Ru⁰, thereby synergistically enhancing catalytic hydrogenation activity. This study provides valuable insights into designing efficient catalysts for cyclohexanol production under mild conditions.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19422–19433"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242151","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":"Development of a Validated Rate-Based Model for CO2 Absorption in Aqueous 2-Amino-2-methyl-1-propanol and Piperazine Blends Using Aspen Plus","authors":"Diego Morlando,&nbsp;, ,&nbsp;Ying Zhang,&nbsp;, ,&nbsp;Shu Wang,&nbsp;, and ,&nbsp;Hanna K. Knuutila*,&nbsp;","doi":"10.1021/acs.energyfuels.5c03281","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03281","url":null,"abstract":"<p >In this work, we developed a new e-NRTL thermodynamic framework for CO₂ absorption in aqueous mixtures of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) in Aspen Plus. The e-NRTL AMP/PZ/H₂O/CO₂ model was fitted on experimental data covering a range of AMP concentration from 12 to 48 mass % and PZ concentration from 2 to 26 mass %, temperature from 20 to 160 °C and CO₂ loading from 0 to 1.03 <i></i><math><mfrac><mrow><mi>m</mi><mi>o</mi><msub><mrow><mi>l</mi></mrow><mrow><mi>C</mi><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub></mrow><mrow><mi>m</mi><mi>o</mi><msub><mrow><mi>l</mi></mrow><mrow><mi>A</mi><mi>M</mi><mi>P</mi></mrow></msub><mo>+</mo><mi>m</mi><mi>o</mi><msub><mrow><mi>l</mi></mrow><mrow><mi>P</mi><mi>Z</mi></mrow></msub></mrow></mfrac></math>. The model predicts the CO₂ solubility, as partial pressure of CO₂, over aqueous AMP/PZ solutions within an absolute average relative deviation (AARD) of 26.3%, the total pressure of the system with an AARD value of 7.0%, the heat of absorption of CO₂ with an AARD value of 10.2%, and the estimated free CO₂ concentration with an AARD value of 13.1%. The model gives a good representation of liquid speciation as a function of the CO₂ loading and amine concentration. The model shows good predictions of the CO₂ solubility over aqueous AMP/PZ solutions at relevant absorber, stripper and water wash amine concentrations and temperatures. The developed e-NRTL model, in combination with mass transfer and CO₂ absorption kinetics modeling, is validated with two pilot campaigns: one at the University of Kaiserslautern and one at the Technology Centre of Mongstad. The developed rate-based model predicts the CO₂ capture, rich loading, and specific reboiler duty within 5% absolute average relative deviation.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19350–19367"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.5c03281","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen Production from Solid Food Waste by Combined Hydrothermal Pretreatment and Aqueous-Phase Catalytic Reforming","authors":"María Torres,&nbsp;, ,&nbsp;Jéssica Justicia,&nbsp;, ,&nbsp;José A. Baeza,&nbsp;, ,&nbsp;Luisa Calvo,&nbsp;, ,&nbsp;Francisco Heras*,&nbsp;, and ,&nbsp;Miguel A. Gilarranz,&nbsp;","doi":"10.1021/acs.energyfuels.5c03603","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.5c03603","url":null,"abstract":"<p >Production of sustainable hydrogen will play a key role as the main energy vector for the transition to a decarbonized economy. Of particular interest is the conversion of biomass into hydrogen, adding value to streams that would otherwise go unused. This study demonstrates efficient hydrogen production from orange juice extraction waste using hydrothermal pretreatment and aqueous-phase reforming. Key parameters─temperature, time, initial pH, and biomass concentration─were optimized using Pt-based catalysts (3–5 wt %) on carbon black with enhanced stability. The highest hydrogen yields were achieved under mild hydrothermal conditions (100–120 °C, 1 h), with ca. 1.0 g/L initial total organic carbon (TOCo) and pH 4. Increasing Pt loading not only improved the hydrogen yield but also increased catalyst deactivation. Under optimal conditions, 84% TOC conversion, 77% carbon conversion to gas, and 69 mmol H₂/gTOCo were obtained, with hydrogen comprising 54% of the product gas. This integrated approach is promising for converting agroindustrial residues into clean hydrogen.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"39 40","pages":"19311–19321"},"PeriodicalIF":5.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.5c03603","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145242150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}