Fuel Processing Technology最新文献

{"title":"Profiling the trapped and deactivating species on HZSM-5 zeolite during 1-butene oligomerization","authors":"Sepideh Izaddoust ,&nbsp;Idoia Hita ,&nbsp;Timo Kekäläinen ,&nbsp;José Valecillos ,&nbsp;Janne Jänis ,&nbsp;Pedro Castaño ,&nbsp;Eva Epelde","doi":"10.1016/j.fuproc.2025.108297","DOIUrl":"10.1016/j.fuproc.2025.108297","url":null,"abstract":"<div><div>The transformation of 1-butene into valuable fuels using HZSM-5 zeolite catalysts is significantly hindered by deactivation caused by deposited species and coke formation. This work delves into the entrapment, formation, and growth of these species during 1-butene oligomerization at 275–325 °C, 1.5–40 bar, and space-times of 2–6 g_cat h mol_C⁻¹. We have employed an extensive characterization of the used catalysts, integrating conventional techniques with high-resolution mass spectrometry (Fourier Transform Ion Cyclotron Resonance Mass Spectrometry, FT-ICR MS). This advanced technique provides a detailed molecular-level analysis of these species. Our findings reveal that higher pressures promote oligomerization, resulting in an increased accumulation of trapped oligomer species. Conversely, higher temperatures facilitate the cracking of these oligomers into lighter fractions or their further conversion into coke molecules through condensation reactions. This dual behavior underscores the complex interplay between temperature and pressure in influencing the deactivation pathways. By understanding the overall reaction mechanism and the formation and growth patterns of trapped and deactivating species, we can develop strategies to mitigate catalyst deactivation, ultimately leading to more efficient industrial applications.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"277 ","pages":"Article 108297"},"PeriodicalIF":7.7,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739102","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":"Elucidating ammonia's impact on non-gray radiation and thermometry during biomass co-firing via spectral guidance","authors":"Liu Huixin ,&nbsp;Wang Chunbo ,&nbsp;Sun Cen ,&nbsp;Yu Xuewu ,&nbsp;Zhang Xiaotian","doi":"10.1016/j.fuproc.2025.108300","DOIUrl":"10.1016/j.fuproc.2025.108300","url":null,"abstract":"<div><div>Ammonia co-firing with biomass is a vital strategy for decarbonizing power generation, yet optimizing its efficiency and emissions necessitates accurate flame temperature monitoring. Reliable diagnosis, however, is impeded by strong, phase-dependent non-gray radiation from biomass (volatile vs. char) and the critically unquantified impact of NH₃ on essential spectral radiative properties. This work systematically investigates the influence of NH₃ concentration on the spectral emissivity <em>ε(λ)</em> of burning rice husk particles within the visible spectrum (400–700 nm) during distinct volatile and char combustion phases, utilizing simultaneous spectroscopy and RGB pyrometry. The investigation revealed that NH₃ significantly lowers <em>ε(λ)</em> for both volatile combustion, where <em>ε</em>_<em>λ</em> decreases with wavelength (<em>ε(λ)</em> &lt; 0.16), and char combustion, where <em>ε</em>_<em>λ</em> increases with wavelength (<em>ε(λ)</em> ≈ 0.35–0.75). Consequently, the key emissivity ratio <em>ε</em>_<em>g</em><em>/ε</em>_<em>r</em> (at 530/600 nm) required for RGB pyrometry exhibited opposite behaviors: for volatile combustion, <em>ε</em>_<em>g</em><em>/ε</em>_<em>r</em> &gt; 1 and increased with NH₃ concentration, whereas for char combustion, <em>ε</em>_<em>g</em><em>/ε</em>_<em>r</em> &lt; 1 and decreased with NH₃ concentration. Building upon these quantitative findings, the developed and validated spectrally-guided RGB pyrometry methodology successfully corrects the substantial temperature overestimation inherent in the gray-body assumption, an error particularly pronounced at higher NH₃ concentrations. This work yields both fundamental quantitative data on ammonia's impact on biomass non-gray radiation and a robust spectrally-guided diagnostic method, providing essential data and techniques for enabling accurate modeling, optimization, and control of biomass-ammonia co-firing processes.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"277 ","pages":"Article 108300"},"PeriodicalIF":7.7,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739101","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":"Leaching behavior of germanium from germanium-rich lignite: A further comprehension of its occurrence state","authors":"Zhiyuan Zhang ,&nbsp;Yanyan Xu ,&nbsp;Guixia Fan ,&nbsp;Yingrui Jin ,&nbsp;Daoguang Teng ,&nbsp;Guosheng Li ,&nbsp;Peng Li ,&nbsp;Yijun Cao","doi":"10.1016/j.fuproc.2025.108298","DOIUrl":"10.1016/j.fuproc.2025.108298","url":null,"abstract":"<div><div>Germanium, a critical metal used in many strategy fields, is widely acknowledged as organic affinity. Germanium is main occurred in the humus of lignite, but its exact occurrence state remains unclear. In this work, various methods were employed to leach germanium from lignite to reveal the germanium occurrence state. Germanium tends to accumulate in specific germanium-endowed structures, but most germanium is bound to and encapsulated in enwrapping structures such as humic acid. It could be extracted either by co-extraction with humic acid (<em>e.g.</em> ammonoxidation, alkaline leaching) or by dissociating the germanium-endowed structure (<em>e.g.</em> thionyl chloride leaching, acid demineralization, and hydrochloric acid leaching). In germanium-rich lignite, germanium was directly connected to oxygen and chelated by the phenolic hydroxyl in the ortho- in the form of a five-membered ring. Furthermore, germanium existed in the germanium-endowed structure in the form of a six-coordinated, deformed octahedron, externally encapsulated by interfering substances. Therefore, this study provides a theoretical basis for targeted extraction of germanium from germanium-rich lignite.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"277 ","pages":"Article 108298"},"PeriodicalIF":7.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144739103","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":"Multi-hollow dielectric barrier discharge plasma: An energy-efficient strategy towards mild ammonia synthesis","authors":"Shanzhi Liu ,&nbsp;Jiabao Lv ,&nbsp;Zhikai Lang ,&nbsp;Xingqi Li ,&nbsp;Jianhua Yan ,&nbsp;Xiaodong Li ,&nbsp;Yaqi Peng ,&nbsp;Yunchao Li ,&nbsp;Dingkun Yuan ,&nbsp;Jian Wu ,&nbsp;Angjian Wu","doi":"10.1016/j.fuproc.2025.108292","DOIUrl":"10.1016/j.fuproc.2025.108292","url":null,"abstract":"<div><div>Renewable-driven non-thermal plasma (NTP) technology provides a potentially sustainable alternative for ammonia (NH₃) production. Nonetheless, energy efficiency remains a critical bottleneck in NTP reactors. Herein, we propose a multi-hollow dielectric barrier discharge (MDBD) plasma reactor to realize nitrogen hydrogenation towards ambient NH₃ synthesis, with the physicochemical characteristics systematically explored for the first time. Transient discharge dynamics were captured by electrical characterization, meanwhile the active intermediate species and the low-temperature properties of MDBD were unveiled by optical spectrum diagnosis. Effects of feed gas, flow rate and specific energy input (SEI) on reaction activity were investigated in terms of energy efficiency (EE) and energy consumption (EC). Notably, remarkable reaction efficacy was realized under low driving powers. For a fully-developed 'steady' discharge, an EE of 1.32 g/kWh and an EC of 46.44 MJ/mol could be attained at 3.20 W. Under a pulse-like fluctuating 'flicker' mode at merely 1.15 W, the EE and EC were improved to 1.78 g/kWh and 34.35 MJ/mol, respectively, further highlighting the energy-effectiveness of MDBD. This work provides a novel approach for energy-efficient, environmental-friendly and distributed NH₃ production.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"277 ","pages":"Article 108292"},"PeriodicalIF":7.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722792","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 diesel fuel production from bio-oils hydrodeoxygenation using unsupported MoS2 catalysts","authors":"Yi Zhang ,&nbsp;Jacques Monnier ,&nbsp;Philip Bulsink ,&nbsp;Moataz Abdrabou ,&nbsp;Jian Li ,&nbsp;Xin Pang ,&nbsp;Nafiseh Zaker ,&nbsp;Rafal Gieleciak","doi":"10.1016/j.fuproc.2025.108290","DOIUrl":"10.1016/j.fuproc.2025.108290","url":null,"abstract":"<div><div>Diesel production from lignocellulosic biomass-derived fast pyrolysis bio-oil (FPBO) and catalytic pyrolysis bio-oil (CPBO) was investigated with an upgrading approach using unsupported MoS₂ catalysts generated in situ. Hydrodeoxygenation of FPBO and CPBO was evaluated in a continuous-flow reactor system using feed blends containing 18 wt% bio-oil in fuel oil. For FPBO, 92.9 % deoxygenation was achieved with 0.51 wt% O in oil products, resulting in low acidity (0.32 mg KOH/g), while 74.8 % deoxygenation was obtained for CPBO with 1.24 wt% O and 0.48 mg KOH/g acidity in oil products. The lower deoxygenation of CPBO suggests that oxygenates in CPBO are less reactive than those in FPBO. In both cases, low solid yields were observed from 1.2 to 2.0 g/100 g bio-oil. XRD and HRTEM detected few-layer stacked structure for the in-situ formed MoS₂ catalysts. The oil product from CPBO retained more biogenic carbon than from FPBO, with the diesel fraction from CPBO exhibiting a higher biogenic carbon content and yield. Both diesel cuts meet almost all ASTM D975 specifications, except for S content, resulting from the high S/Mo feed ratio used in the tests. Evaluation results demonstrated great potential for producing specifications-conforming diesel fractions from FPBO and CPBO upgrading using unsupported MoS₂ catalyst.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108290"},"PeriodicalIF":7.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713174","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":"Attrition behavior analysis of four oxygen carriers in the in-situ redox jet attrition reactor","authors":"Xianyu Liu ,&nbsp;Xin Wu ,&nbsp;Daofeng Mei ,&nbsp;Jinchen Ma ,&nbsp;Haibo Zhao","doi":"10.1016/j.fuproc.2025.108299","DOIUrl":"10.1016/j.fuproc.2025.108299","url":null,"abstract":"<div><div>The anti-attrition properties of oxygen carriers (OCs) significantly impact the operation cost in chemical looping processes. A custom jet attrition reactor evaluates the attrition resistance of four OCs: ilmenite (Ilm-NO), Cu<img>Fe bi-ore OC via hydroforming (CuFe-Hy), and two perovskites via spray drying and hydroforming (Per-SD and Per-Hy), through cold, hot, and redox attrition tests. The anti-attrition performance order across all tests is Ilm-NO &gt; Per-Hy &gt; CuFe-Hy &gt; Per-SD. Post-testing characterizations are conducted, including particle size distributions of consumed particles and captured powders, structure properties, and compositional evolution. Oxygen carrier lifetimes are quantified based on the particle size distributions. Multiple stresses affecting oxygen carrier attrition exhibit antagonistic interactions rather than linear superposition. Element migration, particle expansion, and strength evolution of the tested oxygen carriers are observed. Particle density and crushing strength are highly related to the anti-attrition properties of oxygen carriers. This study develops an efficient method for evaluating OCs under the in-situ redox condition with a high-velocity jet, offering guidance for designing OCs with high attrition resistance and advancing the study of attrition mechanisms.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108299"},"PeriodicalIF":7.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713173","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":"Evolution of full-scale pore structure characteristics of long-flame coal and influencing factors","authors":"Zheng Zhang ,&nbsp;Shuguang Yang ,&nbsp;Gang Wang","doi":"10.1016/j.fuproc.2025.108295","DOIUrl":"10.1016/j.fuproc.2025.108295","url":null,"abstract":"<div><div>China has vast long-flame coal reserves containing abundant coalbed methane (CBM) resources. Understanding the evolution of full-scale pore structure characteristics of this coal and their influencing factors are vital for the CBM development. However, researches on these topics are limited. Herein, 17 long-flame core coals were collected from southern Junggar Basin to accurately characterize the specific surface area (SSA), total pore volume (<em>V</em>_<em>t</em>), and full-scale pore size distribution (FPSD) using mercury intrusion porosimetry (MIP) along with N₂/CO₂ adsorption experiments. Results demonstrate that the FPSD generally exhibits a bimodal characteristic, with abundance of micropores and macropores but scarcity of mesopores, which hinders the efficient transport of CBM. The full-scale pore structure characteristics are closely linked to coal's thermal evolution. As <em>R</em>_{<em>o,</em> max} rises, <em>V</em>_<em>t</em>, mesopore volumes (<em>V</em>_<em>me</em>), and macropore volumes (<em>V</em>_<em>ma</em>) initially decrease to a minimum at a <em>R</em>_{<em>o,</em> max} of ∼0.55 % and then increase. Conversely, micropore volumes (<em>V</em>_<em>mi</em>) exhibit an inverted U-type correlation with <em>R</em>_{<em>o,</em> max}, peaking almost at the same <em>R</em>_{<em>o, max</em>}. Ash yield negatively affects pore volumes and SSAs, particularly for macropores. Inertinite-rich long-flame coals, particularly those with higher semifusinite and fusinite contents, develop more micropores and mesopores, whereas increasing vitrinite content is negatively correlated with their development.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108295"},"PeriodicalIF":7.2,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713024","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":"Corrigendum to “Influence of fuel formulation on exhaust emissions from gasoline direct injection vehicle ” [Fuel Processing Technology, 272 (2025), 108215]","authors":"Tawfiq Al Wasif-Ruiz ,&nbsp;Paloma Álvarez-Mateos ,&nbsp;José Alberto Sánchez-Martín ,&nbsp;María Guirado ,&nbsp;Carmen Cecilia Barrios-Sánchez","doi":"10.1016/j.fuproc.2025.108291","DOIUrl":"10.1016/j.fuproc.2025.108291","url":null,"abstract":"","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108291"},"PeriodicalIF":7.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738871","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":"Pt-Sn/SAPO-11: A preferred high-performance, stable, and regenerable hydrogenation catalyst for Jatropha oil","authors":"Miaoxin Guo ,&nbsp;Qiang Liu ,&nbsp;Junchen Du ,&nbsp;Feng Feng ,&nbsp;Yubao Chen ,&nbsp;Aimin Zhang","doi":"10.1016/j.fuproc.2025.108296","DOIUrl":"10.1016/j.fuproc.2025.108296","url":null,"abstract":"<div><div>The sustainable aviation fuel derived from Jatropha oil helps to reduce the dependence of the aviation industry on fossil energy and decrease total carbon emissions. To achieve efficient catalytic conversion of Jatropha oil without loading more precious metals, one-step catalytic hydrogenation of Jatropha oil to bio-jet fuel over La, Ce, Y, or Sn-doped Pt/SAPO-11 was studied in this paper. The characterization results from XRD, N₂ adsorption-desorption, TEM, and NH₃-TPD showed that the catalytic activity of Pt-Sn/SAPO-11 was significantly better than that of other element-doped catalysts because Sn doping regulated the pore size of the support, promoted the dispersion of Pt particles, and balanced the relative distribution of metal active sites and acid sites. Moreover, Sn doping can stably maintain the high catalytic activity of Pt/SAPO-11 for up to 60 h. The simple calcination treatment can effectively remove the coke deposited during long-term service and restore the hydrodeoxygenation capacity of the catalyst to the initial level. However, the other ability to completely recover the Pt-Sn/SAPO-11 catalyst depends on the improvement of the regeneration process. This work will help to promote the value-added utilization of Jatropha oil and contribute to solving the competition between food and fuel.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108296"},"PeriodicalIF":7.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695173","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":"Time-dependent evolution of morphologies and lattice defects in hydrothermal synthesized ceria-zirconia solid solutions for catalytic combustion of diesel soot","authors":"Zhengzheng Yang ,&nbsp;Zhi Chen ,&nbsp;Na Zhang ,&nbsp;Yang Zhou ,&nbsp;Dezhou Luo ,&nbsp;Tai Jin ,&nbsp;Huangwei Zhang","doi":"10.1016/j.fuproc.2025.108294","DOIUrl":"10.1016/j.fuproc.2025.108294","url":null,"abstract":"<div><div>In this work, the physical-chemical and morphological evolution of CeO₂-ZrO₂ solid solutions caused by hydrothermal processing time, and its effects on catalytic diesel soot elimination were studied. SEM and TEM results show that the CeO₂-ZrO₂ nanocrystal particles gradually aggregate with the extension of hydrothermal processing time. A moderate hydrothermal processing time can facilitate the engineering of catalyst morphology at micronmeter scale, however, excessive hydrothermal synthesis time would contrarily destroy the micrometer scaled catalyst morphological structure. The result of XPS, O₂-TPD and H₂-TPR analysis indicates that the hydrothermal synthesis process is conducive to generating lattice defects (oxygen vacancies) of CeO₂-ZrO₂ solid solution. This is a key factor for enhancing the concentration of surface-active oxygen species. The CeO₂-ZrO₂ catalyst prepared by 48 h of hydrothermal processing time (CZ-48 h) exhibits the highest concentration of surface-active oxygen species and oxygen vacancies. Interestingly, the CeO₂-ZrO₂ catalyst synthesized by 6 h of hydrothermal processing time (CZ-6 h) exhibits oxygen vacancy and surface-active oxygen levels that are close to the CZ-48 h, which is obviously more than the traditional co-precipitation CeO₂-ZrO₂ catalyst (CZ-0 h). The soot catalytic elimination performance of the CZ-6 h is also significantly superior to that of the CZ-0 h catalyst. Therefore, this study suggests that the short-time hydrothermal processing is an effective and low-cost strategy to create more oxygen vacancies and improve catalytic performance of CeO₂-ZrO₂ solid solution.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"276 ","pages":"Article 108294"},"PeriodicalIF":7.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686155","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}