燃料化学学报最新文献

{"title":"Size-controllable PtPdRuRhCuMo high-entropy alloy nanoparticles for electrocatalytic ethylene glycol oxidation","authors":"Jin ZHAO,&nbsp;Dongze MA,&nbsp;Wanming LIN,&nbsp;Tianjun HU,&nbsp;Jianfeng JIA","doi":"10.1016/S1872-5813(26)60698-6","DOIUrl":"10.1016/S1872-5813(26)60698-6","url":null,"abstract":"<div><div>High-entropy alloy nanoparticles (HEA NPs), with unique multi-element synergistic effects and excellent structural stability, are promising core materials for high-efficiency electrocatalysts, but precise regulation of their morphology and composition remains a critical challenge. In this study, cetyltrimethylammonium bromide (CTAB) and cetyltrimethylammonium chloride (CTAC) were used as structure-directing agents to controllably synthesize PtPdRuRhCuMo HEA NPs <em>via</em> solvothermal method, and their regulatory effects on material properties were systematically investigated. Structural characterizations showed HEA-1 (CTAB-prepared) had superior dispersibility, uniform particle size and high crystallinity, while HEA-2 (CTAC-prepared) exhibited agglomeration and uneven particle size. Electrochemical tests revealed HEA-1 achieved a mass activity of 2.4 A/mg in alkaline EGOR, significantly higher than HEA-2 and commercial Pt/C (1.25 A/mg) and retained 50% initial activity after 10 h continuous testing, showing certain stability. Structure-directing agents determine HEA NPs’ structural characteristics and thus their electrocatalytic performance; HEA-1’s excellence is attributed to CTAB-mediated regular structure and strong multi-metal electronic interactions. This work provides a new strategy for precise regulation of HEA NPs and lays a foundation for their practical application in energy conversion systems.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (185KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250413"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acid-metal modified HZSM-5 catalyst for methanol aromatization","authors":"Jian LI,&nbsp;Haishan ZHU,&nbsp;Yongwei QIAO,&nbsp;Jiashen ZHANG,&nbsp;Lina YANG","doi":"10.1016/S1872-5813(26)60705-0","DOIUrl":"10.1016/S1872-5813(26)60705-0","url":null,"abstract":"<div><div>The HZSM-5 zeolite was co-modified with levulinic acid (LA) and Zn to obtain L/Zn0.2-ZSM5. Comprehensive characterization was conducted using XRD, N₂ adsorption-desorption, NH₃-TPD, Py-FTIR, Raman, XPS and TGA to investigate the effects of co-modification on the catalyst’s structure, physicochemical properties, catalytic performance, and coke-deposition behavior. The results indicate that L/Zn0.2-ZSM5 possesses a specific surface area comparable to that of HZSM-5, while exhibiting significantly larger pore volume and average pore size than HZSM-5 and the singly modified catalysts (L-ZSM5 and Zn0.2-ZSM5). In addition, co-modification markedly decreases the total acid amount and acid strength, while establishing a moderate Brønsted-to-Lewis (B/L) acid ratio. These structural and acidic modifications endow L/Zn0.2-ZSM5 with a BTX (benzene, toluene, xylene) selectivity of 58.75% and a catalytic lifetime of 128 h, both of which surpass those of the singly modified catalysts and those with different Zn loadings. The enhanced catalytic performance of L/Zn0.2-ZSM5 correlates with its significantly lower proportion of internal coke and greater coke storage capacity compared with the unmodified and singly modified catalysts. This behavior is attributed to the co-modification-induced pore enlargement, which effectively reduces the diffusion resistance of coke precursors and suppresses the graphitization process of coke. Furthermore, LA strengthens the interaction between Zn species and the zeolite framework, promotes Zn dispersion, and substantially increases the proportion of [ZnOH]⁺ species to 61.36%.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (235KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250392"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of PtZn/TS-Xcatalyst mediated by hydroxyl nests and its high-efficiency catalytic performance for propane dehydrogenation","authors":"Jiani LI,&nbsp;Zenan NI,&nbsp;Xuan YANG,&nbsp;Hanyue GUAN,&nbsp;Qijian ZHANG","doi":"10.1016/S1872-5813(26)60682-2","DOIUrl":"10.1016/S1872-5813(26)60682-2","url":null,"abstract":"<div><div>Acid etching enables the enrichment of abundant hydroxyl nests on the surface of titanium silicalite (TS). These hydroxyl nests offer stable anchoring sites for the immobilization of active components, facilitating synergistic interaction with PtZn bimetallic species and enhancing propane dehydrogenation (PDH) catalytic performance. Based on this concept, in the present work, TS supports were etched using hydrochloric acid with varying concentrations, and a series of PtZn/TS bimetallic catalysts were fabricated <em>via</em> the co-impregnation method. The effects of acid concentration on the catalyst structure, surface properties, and PDH catalytic performance were systematically investigated. Comprehensive characterization results reveal that acid etching induces the formation of surface-enriched hydroxyl nest structures on TS supports. These structures act as efficient anchoring centers for PtZn species, leading to enhanced dispersion and increased exposure of metallic Pt⁰ species, thereby lowering the energy barrier for the PDH reaction. This study thus provides a feasible and rational strategy for the design of high-performance PDH catalysts.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (58KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250403"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research advances in the hydrogenolysis of glycerol to C3 oxygenated chemicals","authors":"Hongyu MAO,&nbsp;Fei WANG,&nbsp;Honghui GONG","doi":"10.1016/S1872-5813(26)60697-4","DOIUrl":"10.1016/S1872-5813(26)60697-4","url":null,"abstract":"<div><div>The rapid expansion of the biodiesel industry plays a crucial role in achieving carbon neutrality and promoting energy system transformation. However, the oversupply of the by-product glycerol has hindered the sustainable development of biodiesel industry. Therefore, the green conversion of the by-product glycerol is conducive to the sustainable development of the biodiesel industry. Among various valorization routes, the hydrogenolysis of glycerol to C3 oxygenated chemicals is considered one of the most promising pathways. This review first briefly introduces glycerol chemistry and the fundamental reaction mechanism of glycerol hydrogenolysis. Subsequently, recent advances in catalytic systems for the selective hydrogenolysis of glycerol to high-value C3 oxygenated chemicals such as 1,2-propanediol, 1,3-propanediol, 1-propanol and propanal, are comprehensively summarized. Finally, future research directions and development trends in glycerol hydrogenolysis are discussed.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (66KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250264"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting density and viscosity and identifying key features for biodiesel-alcohol blends based on explainable machine learning models","authors":"Jianan WANG,&nbsp;Jiahao SHI,&nbsp;Shengshan BI,&nbsp;Qingsong AN,&nbsp;Kehui GAO,&nbsp;Junwei CUI","doi":"10.1016/S1872-5813(26)60706-2","DOIUrl":"10.1016/S1872-5813(26)60706-2","url":null,"abstract":"<div><div>Accurate prediction of the thermophysical properties of biodiesel-alcohol blends is essential for spray combustion simulation when used as alternative marine fuels. To address the limitations of existing prediction models in terms of generalization capability and interpretability, this study systematically evaluated the predictive performance and applicability of Ridge regression, Artificial Neural Network (ANN), Random Forest and XGBoost models for estimating the density and viscosity of the blends. The results indicated that the XGBoost model outperforms the other three models, achieving mean absolute percentage errors (MAPE) of 0.05% for density and 1.89% for viscosity on unseen test data. Statistical tests confirmed the significantly superior performance of this model. Furthermore, interpretability analysis based on SHapley Additive exPlanations (SHAP) disclosed that, in the XGBoost model, initial density (<em>ρ</em>₂₀) and experimental temperature (<em>T</em>) are the key inputs for density prediction, while <em>T</em> and initial viscosity (<em>η</em>₂₀) are the most influential for viscosity prediction. Finally, robustness testing demonstrated that the XGBoost model maintains excellent stability and generalization capability with input noise levels up to 2%, thereby providing high-precision data support for numerical simulation of in-cylinder spray characteristics in internal combustion engines.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (195KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250387"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of acidity on the performance of propylene oligomerization over HZSM-5 catalysts","authors":"Wei LI,&nbsp;Hui WANG,&nbsp;Jinzhi ZHANG,&nbsp;Xi XU,&nbsp;Xingcui GUO,&nbsp;Tiantian JIAO,&nbsp;Jinhu WU","doi":"10.1016/S1872-5813(26)60699-8","DOIUrl":"10.1016/S1872-5813(26)60699-8","url":null,"abstract":"<div><div>HZSM-5 zeolite catalysts with different Si/Al ratios were synthesized by the hydrothermal method. The catalytic performance of these HZSM-5 zeolites with varying Si/Al ratios in propylene oligomerization was investigated. The structure, composition, and acidity of the catalysts were analyzed using XRD, SEM, N₂ physisorption-desorption, NH₃-TPD and so on. A comparative study was conducted on the catalytic performance in propylene oligomerization over HZSM-5 with different Si/Al ratios (30, 50, 90 and 120). The results indicate that as the Si/Al ratio increases, the catalyst acidity decreases, and the temperature for maximum liquid oil yield from propylene oligomerization shifts to higher temperatures, specifically 360, 380, 440 and 460 °C, respectively. This study focuses on elucidating the relationship between the acidity of HZSM-5 zeolites with different Si/Al ratios and the product distribution as well as the reaction pathways in propylene oligomerization. The research indicates that HZSM-5 zeolites with lower Si/Al ratios possess higher acid site density, which favors the occurrence of propylene oligomerization, with the reaction products primarily consisting of olefins. In contrast, HZSM-5 catalysts with higher Si/Al ratios are more conducive to further reactions of propylene and the primary olefinic products from oligomerization, such as cyclization, aromatization and hydrogen transfer. Consequently, the product distribution is broader, encompassing olefins, cycloalkanes, aromatics, and alkanes.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (75KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250433"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the structure-activity mechanism of slurry prepared by co-blending corn stalk biochar and coal","authors":"Junqiu KOU,&nbsp;Chunyu WANG,&nbsp;Ligong MAO,&nbsp;Lu DING,&nbsp;Guangsuo YU","doi":"10.1016/S1872-5813(26)60718-9","DOIUrl":"10.1016/S1872-5813(26)60718-9","url":null,"abstract":"<div><div>In this study, corn straw was used as the raw material and subjected to low-temperature pyrolysis in a tubular furnace within the range of 400–500 °C to investigate the effects of pyrolysis temperature on the physicochemical properties of biochar and the migration behavior of alkali metal potassium (K). Elemental analysis, FT-IR, SEM and BET techniques were employed to examine the effects of temperature on the properties of biochar. The results showed that with increasing pyrolysis temperature, the fixed carbon content increased, while the volatile matter and oxygen-containing functional groups decreased. The pore structure gradually developed, with the specific surface area and pore volume reaching their maximum values at 475 °C. The total K content decreased with increasing temperature, and its occurrence transformed from water-soluble to organic-bound and residue-bound forms. When the biochar was blended with coal to prepare biochar-coal-water slurry, it was found that within 400–475 °C, potassium ions reacted with carboxyl groups to form potassium carboxylates, reducing hydrophilic groups and enhancing particle hydrophobicity, consequently, the fluidity of the multicomponent slurry is improved and its viscosity is reduced. At 500 °C, mineral deposition led to pore blockage and increased its viscosity. Furthermore, surface modification of biochar particles with kerosene significantly improved the performance of the multicomponent slurry, increasing the maximum slurry concentration by about 2.6%. The study elucidates the structure-activity mechanisms governing the performance of co-slurrying corn-stalk pyrolysis char with coal, providing a theoretical basis for the efficient utilization of biochar in coal-water slurry systems and broader energy applications.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (89KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250358"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective adsorption behaviors of CO2 in small-pore chabazite zeolites","authors":"Fubin PENG,&nbsp;Shenyong REN,&nbsp;Jiujiang WANG,&nbsp;Shangshu LIU,&nbsp;Xin TAO,&nbsp;Hongjuan ZHAO,&nbsp;Honghai LIU,&nbsp;Min GU,&nbsp;Xiaodan ZHU,&nbsp;Can CUI,&nbsp;Baojian SHEN,&nbsp;Chunming XU","doi":"10.1016/S1872-5813(26)60687-1","DOIUrl":"10.1016/S1872-5813(26)60687-1","url":null,"abstract":"<div><div>Chabazite-type (CHA) zeolite is considered to be a highly promising CO₂ adsorption material due to is unique pore structure. However, the underlying adsorption kinetics of CHA zeolite still need to be studied to facilitate development of efficient adsorbents. In this study, the preparation method, CO₂ adsorption kinetics, and thermodynamic properties of CHA zeolite are investigated. CHA zeolite is synthesized from hydrogen type faujasite-type (H-FAU) zeolite using a transformation method. By modulating the ratios of <em>n</em>(KOH)/<em>n</em>(SiO₂), <em>n</em>(H₂O)/<em>n</em>(SiO₂), crystallization temperature, and crystallization time during the synthesis process, the optimal synthesis conditions for CHA zeolite are explored based on X-Ray Diffraction (XRD) and scanning electron microscopy (SEM) of the as-synthesized materials. The CO₂ adsorption performance of the prepared CHA zeolite is tested and evaluated using both dynamic and static measurements. Different kinetic models are applied to analyze the kinetic behavior of the adsorption process. Among them, the Avrami equation yields a good fit to illustrate the adsorption process of studied zeolites (<em>R</em>² &gt; 0.99). With increasing temperature, the adsorption process reach equilibrium more quickly due to the enhanced adsorption rate. The selectivity also increases with increasing temperature, indicating that the adsorption process of CO₂ on CHA zeolite is mainly controlled by diffusion. Breakthrough data and thermodynamic analysis show that the material’s interaction with CO₂ is stronger than that with N₂, yet the CO₂ adsorption is still dominated by physical interactions. The weak adsorption strength between CO₂ and CHA zeolite is conducive to gas desorption. These findings provide a theoretical support for optimizing industrial adsorption operating conditions.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (108KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250397"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The ZSM-22-ZSM-23 composite molecular sieve catalyst regulates the product distribution of the hydroisomerization of n-dodecane","authors":"Haiying LU,&nbsp;Yumeng GUO,&nbsp;Wenrui JIN,&nbsp;Yujie DUAN,&nbsp;Jiangnan XIANG,&nbsp;Wei ZHANG,&nbsp;Yan WANG,&nbsp;Limin GAI,&nbsp;Xiaowei WANG,&nbsp;Jianle HOU,&nbsp;Ruifeng LI","doi":"10.1016/S1872-5813(26)60691-3","DOIUrl":"10.1016/S1872-5813(26)60691-3","url":null,"abstract":"<div><div>In this study, ZSM-22-ZSM-23 composite zeolite was synthesized <em>via</em> a mechanical mixing method. The morphology, acidic properties, and textural properties of the samples were characterized by XRD, SEM, TEM, NH₃-TPD, Py-FTIR, and N₂ adsorption-desorption techniques. The hydroisomerization catalytic performance of the composite zeolite was evaluated using <em>n</em>-dodecane as a model reactant, and compared against the individual zeolite components. It was found that the textural and acidic properties could be precisely modulated by varying the ZSM-22 to ZSM-23 mass ratio. At an optimal mass ratio of 4:1, the selectivity for <em>iso</em>-dodecane increased by 24% relative to ZSM-23, while the ratio of terminal-branching to intermediate-branching product selectivity (<em>s_t</em>/<em>s_i</em>) decreased by 14% compared to ZSM-22. The results demonstrate that the composite zeolite combines the advantages of both individual zeolite in terms of texture and acidity, exhibits superior hydroisomerization performance, and can effectively regulate the distribution of terminal-branching and intermediate-branching isomers in <em>iso</em>-dodecane.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (129KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250418"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on catalytic combustion performance of CO over Sn-modified CuCeOx catalysts under high humidity conditions","authors":"Juntao XUE,&nbsp;Kehan BI,&nbsp;Hao WU,&nbsp;Chao HUANG,&nbsp;Jinghui LÜ,&nbsp;Yangyang ZHANG,&nbsp;Yujing WENG,&nbsp;Yulong ZHANG","doi":"10.1016/S1872-5813(26)60689-5","DOIUrl":"10.1016/S1872-5813(26)60689-5","url":null,"abstract":"<div><div>Low-temperature CO oxidation technology has been widely applied in the field of environmental pollution control, yet challenges remain in CO purification under high-moisture environments. In this study, a series of CuCeO_<em>x</em>-Sn catalysts supported on CeO₂ were prepared <em>via</em> the excess impregnation method, and their catalytic performance in the low-temperature catalytic combustion of CO was systematically evaluated. The results indicate that CuCeO_<em>x</em>-Sn_0.1 (with a Sn loading of 0.1%) exhibits the optimal low-temperature catalytic activity, with the lowest <em>t</em>₅₀ and <em>t</em>₉₀ values. The temperature for 90% CO conversion (<em>t</em>₅₀ and <em>t</em>₉₀) decreases progressively with increasing Sn loading up to 0.1%. Beyond this threshold, further Sn loading does not lead to a significant reduction in <em>t</em>₉₀; in fact, <em>t</em>₉₀ slightly increases compared to that observed at 0.1% Sn. Furthermore, this catalyst maintains stability during water-on/water-off switching tests, demonstrating excellent water resistance. Through characterization techniques including XPS, O₂-TPD, CO-TPD and CO-TPSR, it is revealed that the introduction of Sn effectively increases the concentration of surface oxygen vacancies and promotes the activation and migration of surface adsorbed oxygen and lattice oxygen.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (101KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"54 9","pages":"Article 20250391"},"PeriodicalIF":0.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148974596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}