Applied Catalysis A: General最新文献_第5页

Construction of MnOₓ catalysts rich in oxygen vacancies for highly selective oxidation of aromatic alcohols: Structure-activity relationship and mechanism study 高选择性氧化芳醇的富氧空位MnOₓ催化剂的构建：构效关系及机理研究

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-12-16 DOI: 10.1016/j.apcata.2025.120746

Huan Wang , Weitao Wang , Shuang Yue , Yang Liu , Jiaqi Zhu , Yiqian Yao , Zhen-Hong He

{"title":"Construction of MnOₓ catalysts rich in oxygen vacancies for highly selective oxidation of aromatic alcohols: Structure-activity relationship and mechanism study","authors":"Huan Wang , Weitao Wang , Shuang Yue , Yang Liu , Jiaqi Zhu , Yiqian Yao , Zhen-Hong He","doi":"10.1016/j.apcata.2025.120746","DOIUrl":"10.1016/j.apcata.2025.120746","url":null,"abstract":"<div><div>Developing highly efficient and stable non-precious metal oxide catalysts for selective oxidation reactions remains a key challenge in the field of heterogeneous catalysis. This study synthesized a series of manganese oxide catalysts with distinct structural characteristics by controlling the calcination temperature of the precursors. The results indicate that the calcination temperature significantly influences the catalyst's crystal structure, the distribution of manganese valence states, and the surface defect concentration. Among these, the manganese oxide calcined at 400 °C exhibits optimal catalytic performance due to its unique structural characteristics, which include residing at a phase transition boundary, a partial transition of Mn ion valence states, and the resulting abundance of surface oxygen vacancies. These structural features collectively regulate the catalyst's electronic structure, effectively promoting the adsorption, and activation of molecular oxygen. This generates superoxide radicals (·O<sub>2</sub><sup>–</sup>) as key reactive oxygen species, thereby driving an efficient oxidation reaction cycle. This work elucidates the structure–activity relationship of manganese oxides in oxidative catalysis, providing important insights for designing metal oxide catalysts with specific surface defects and electronic properties.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120746"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in single-atom-based photo-Fenton catalysts for the degradation of antibiotics, pesticides, and phenols 单原子光fenton催化剂在抗生素、农药和酚类降解中的研究进展

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-11-23 DOI: 10.1016/j.apcata.2025.120717

Sahil Rana , Pooja Dhiman , Pankaj Sharma , Mashallah Rezakazemi , Gaurav Sharma

{"title":"Recent advances in single-atom-based photo-Fenton catalysts for the degradation of antibiotics, pesticides, and phenols","authors":"Sahil Rana , Pooja Dhiman , Pankaj Sharma , Mashallah Rezakazemi , Gaurav Sharma","doi":"10.1016/j.apcata.2025.120717","DOIUrl":"10.1016/j.apcata.2025.120717","url":null,"abstract":"<div><div>The persistent nature, toxicity, and resistance to traditional treatment procedures of antibiotics, pesticides, and phenols have made their growing presence in water bodies a major environmental and public health challenge. The degradation of these emerging pollutants has shown great promise using advanced oxidation processes (AOPs), particularly the photo-Fenton process. This review highlights the growing levels of contaminants in water, such as antibiotics, pesticides, and phenols, along with their sources, fate, and impacts on human health and the environment. The fundamentals and mechanistic processes of the photo-Fenton approach are briefly discussed. Under visible light, single-atom catalysts (SACs) offer greater efficiency, selectivity, and recyclability in pollutant degradation due to their atomically distributed metal sites, high catalytic activity, and variable coordination environments. The most recent developments in single-atom-based photo-Fenton catalysts, their design, synthesis strategies, and applications for the degradation of antibiotics, pesticides, and phenolic pollutants in water are thoroughly discussed and summarized in this review. A critical discussion of essential issues, including catalyst performance under actual water conditions, scalability, and stability, is provided. The article concludes by outlining potential directions for the sustainable implementation and logical design of SAC-based photo-Fenton systems in environmental remediation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120717"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly efficient hydrogenation of waste resin oil into high-density hydrocarbon biofuel over MOF-derived CoNi@NCNTs/rGO catalyst 废弃树脂油在mof衍生CoNi@NCNTs/rGO催化剂上高效加氢成高密度碳氢生物燃料

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-11-29 DOI: 10.1016/j.apcata.2025.120732

Xiaoxuan Liang, Hairong Mo, Chenghong Wu, Xiaopeng Chen, Mingda Zhang, Xu Wei, Jiezhen Liang, Linlin Wang

{"title":"Highly efficient hydrogenation of waste resin oil into high-density hydrocarbon biofuel over MOF-derived CoNi@NCNTs/rGO catalyst","authors":"Xiaoxuan Liang, Hairong Mo, Chenghong Wu, Xiaopeng Chen, Mingda Zhang, Xu Wei, Jiezhen Liang, Linlin Wang","doi":"10.1016/j.apcata.2025.120732","DOIUrl":"10.1016/j.apcata.2025.120732","url":null,"abstract":"<div><div>The sustainable production of biofuels via residual and waste biomass is highly desirable, but the efficient catalytic hydrogenation remains a challenge. In this work, a novel strategy was developed for synthesizing Co-Ni alloy nanoparticles encapsulated in nitrogen-doped carbon nanotubes (NCNTs) anchored onto both sides of reduced graphene oxide (rGO) by direct pyrolysis of GO-wrapped core–shell bimetallic organic frameworks (MOFs). Under conditions of 270 ℃, 5 Mpa and 240 min, the CoNi@NCNTs/rGO catalyst achieved 94.6 % conversion efficiency in the hydrogenation of resin oil into hydrocarbon biofuels. This high performance was attributed to the significant synergistic effect between Co and Ni, the in-situ-formed NCNTs@rGO, and its hierarchical porous structure. The CoNi@NCNTs/rGO catalyst possessed a hierarchical porous structure with pores ranging from 1.8 nm to 190 nm, where NCNTs facilitated the dispersion and stabilization of Ni-Co alloy nanoparticles, while electron transfer from Ni to Co increased the electron density at Co sites, thereby enhancing the efficiency of hydrogen activation and dissociation. A reaction network was proposed based on the product distribution to elucidate the hydrogenation reaction pathways of monoterpenes, sesquiterpenes, and diterpenoid resin acids in rosin oil over the CoNi@NCNTs/rGO catalyst. Moreover, the obtained biofuel had a high density of 0.92 g/cm<sup>3</sup> and a high heat value of 51.09 MJ/kg. The non-noble metal Co-Ni alloy catalyst offers a sustainable and cost-effective approach for converting bio-oil into biofuel, meeting the growing industry demand for more efficient catalytic processes.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120732"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyaniline-derived B/N-doped carbon supporting isolated Pd and Au nanoparticles as a bimetal catalyst for high-performance 4-chloronitrobenzene hydrogenation 聚苯胺衍生的B/ n掺杂碳负载分离Pd和Au纳米颗粒作为高性能4-氯硝基苯加氢的双金属催化剂

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-12-02 DOI: 10.1016/j.apcata.2025.120740

Qingtai Xie , Libo Sun , Zhiyuan Xu, Heshun Jing, Caixia Qi, Baorong Duan, Xun Sun, Lijun Zhao, Miao Zhang, Xiaolong Zhang

{"title":"Polyaniline-derived B/N-doped carbon supporting isolated Pd and Au nanoparticles as a bimetal catalyst for high-performance 4-chloronitrobenzene hydrogenation","authors":"Qingtai Xie , Libo Sun , Zhiyuan Xu, Heshun Jing, Caixia Qi, Baorong Duan, Xun Sun, Lijun Zhao, Miao Zhang, Xiaolong Zhang","doi":"10.1016/j.apcata.2025.120740","DOIUrl":"10.1016/j.apcata.2025.120740","url":null,"abstract":"<div><div>The study describes the fabrication of a 0.05 %Pd-0.5 %Au bimetallic nanocatalyst supported on B/N-doped carbon (BNC) for chemoselective reduction of 4-chloronitrobenzene (p-CNB) yielding 4-chloroaniline (p-CAN) as the major product. The BNC support was synthesized via pyrolysis of boric acid-doped polyaniline, followed by the loading of isolated Pd and Au nanoparticles as a bimetal catalyst through sol-immobilization. Characterization revealed that B doping induced electron deficiency in Au and Pd nanoparticles, enhancing p-CNB adsorption. The catalyst exhibited exceptional low-temperature activity (100 % conversion, 90 % selectivity at 60 °C) and stability (only a 16 % decrease in conversion after 5 cycles). Temperature-programmed desorption (TPD) confirmed synergistic Lewis acid-base sites on BNC, enabling efficient H<sub>2</sub> activation. With an apparent activation energy (E<sub>a</sub>) of 16.9 kJ/mol and turnover frequency (TOF) of 5176 h<sup>−1</sup>, 0.05 %Pd-0.5 %Au/BNC demonstrated superior performance under milder conditions compared with reported systems. The findings highlighted the critical role of heteroatom-induced electronic modulation in optimizing catalytic efficiency for industrial hydrogenation processes.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120740"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

NiMoO4 nanorods supported Ru clusters with improved catalytic activity for overall water splitting via enhanced metal support interaction NiMoO4纳米棒支持Ru团簇，通过增强金属支撑相互作用，提高了整体水分解的催化活性

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-12-02 DOI: 10.1016/j.apcata.2025.120733

Junfei Zhao, Siru Chen, Zhuohan Zhang, Xiaoyu Song, Yanjie Wang, Jiabin Xiong, Yaomin Zhao

{"title":"NiMoO4 nanorods supported Ru clusters with improved catalytic activity for overall water splitting via enhanced metal support interaction","authors":"Junfei Zhao, Siru Chen, Zhuohan Zhang, Xiaoyu Song, Yanjie Wang, Jiabin Xiong, Yaomin Zhao","doi":"10.1016/j.apcata.2025.120733","DOIUrl":"10.1016/j.apcata.2025.120733","url":null,"abstract":"<div><div>The development of efficient and durable bifunctional electrocatalysts is crucial for sustainable hydrogen production via electrochemical water splitting. This work presents the rational design and synthesis of Ru nanoclusters anchored on NiMoO<sub>4</sub> nanorods (Ru- NiMoO<sub>4</sub>) as a high-performance catalyst for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The composite leverages the inherent OER activity of the NiMoO<sub>4</sub> support, the high intrinsic HER activity of Ru nanoclusters, and critically, enhanced electronic metal-support interaction (EMSI). Detailed characterization confirms the successful formation of highly dispersed Ru nanoclusters on the NiMoO<sub>4</sub> nanorods and reveals electronic structure modulation. The optimized catalyst Ru-NiMoO<sub>4</sub>-2 requires remarkably low overpotentials of only 56 mV for HER and 318 mV for OER to achieve 10 mA cm<sup>−2</sup> in 1.0 M KOH, with good stability. When employed as both anode and cathode in a two-electrode electrolyzer, it delivers a current density of 10 mA cm<sup>−2</sup> at a low cell voltage of 1.638 V with near-unity Faradaic efficiency. This work highlights the efficacy of strategic support selection and harnessing EMSI for designing advanced bifunctional electrocatalysts for efficient overall water splitting.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120733"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ice template steam-assisted synthesis of multistage porous ZSM-5 boosts catalytic reforming of plastics to produce aromatics 冰模板蒸汽辅助合成多级多孔ZSM-5促进了塑料的催化重整生产芳烃

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2026-01-03 DOI: 10.1016/j.apcata.2026.120770

Yufei Gu , Yanning Pan , Qi Wei , Ting Zhao , Wei Wang , Yunshuang Hu , Lei Miao , Hongfei Lin , Zhongmin Wang , Zhixia Li

{"title":"Ice template steam-assisted synthesis of multistage porous ZSM-5 boosts catalytic reforming of plastics to produce aromatics","authors":"Yufei Gu , Yanning Pan , Qi Wei , Ting Zhao , Wei Wang , Yunshuang Hu , Lei Miao , Hongfei Lin , Zhongmin Wang , Zhixia Li","doi":"10.1016/j.apcata.2026.120770","DOIUrl":"10.1016/j.apcata.2026.120770","url":null,"abstract":"<div><div>A novel freeze-drying steam-assisted crystallization protocol fabricates multistage porous ZSM-5 zeolites, incorporating multiscale channel architectures (0.5 nm-10 μm) to alleviate mass-transfer constraints inherent in conventional microporous zeolites. This eco-friendly, scalable methodology pioneers catalytic polyethylene pyrolysis by augmenting catalytic activity, achieving exceptional monocyclic aromatic hydrocarbons selectivity of 97.3 % and BTEX (benzene/toluene/ethylbenzene/xylene) selectivity of 94.9 %, surpassing commercial and nanosized counterparts. Demonstrating operational stability, the catalyst maintains 23.7–30.0 wt% oil yields and 71.3–74.9 % BTEX selectivity, attributed to enhanced intracrystalline diffusivity that mitigates coke deposition. Computational simulations reveal that multistage porous structures facilitate reactant diffusion and regulate C-C bond cleavage via steric confinement, synergizing with acid sites to promote cracking-aromatization cascades. Life-cycle analysis confirms the technology’s economic superiority over conventional pyrolysis through improved product value and reduced separation costs. This advancement establishes a sustainable paradigm for zeolite synthesis and plastic-to-aromatics conversion, aligning with circular economy goals.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120770"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145920790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing high faradaic efficiency for n-butanol over Cu-cubic nanocrystals: New insights into CO2 reduction via GC-DFT and operando Raman spectroscopy 利用cu立方纳米晶体上正丁醇的高法拉第效率：通过GC-DFT和operando拉曼光谱对CO2减少的新见解

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-12-17 DOI: 10.1016/j.apcata.2025.120752

Esraa Kotob , Yousef A. Alsunni , Ahmed H. Biby , Omer Ahmed Taialla , Ijaz Hussain , Khalid Alhooshani , Saheed A. Ganiyu , Munzir H. Suliman , Muhammad Usman

{"title":"Harnessing high faradaic efficiency for n-butanol over Cu-cubic nanocrystals: New insights into CO2 reduction via GC-DFT and operando Raman spectroscopy","authors":"Esraa Kotob , Yousef A. Alsunni , Ahmed H. Biby , Omer Ahmed Taialla , Ijaz Hussain , Khalid Alhooshani , Saheed A. Ganiyu , Munzir H. Suliman , Muhammad Usman","doi":"10.1016/j.apcata.2025.120752","DOIUrl":"10.1016/j.apcata.2025.120752","url":null,"abstract":"<div><div>n-Butanol is a valuable chemical commodity with a market price of approximately $1300/ton. It is usually made from propylene and syngas via the oxo process, but its reliance on fossil fuels is unsustainable. However, its direct electrochemical production from CO<sub>2</sub> in a single step remains a significant challenge due to high energy requirements and the need for specialized catalysts. In this study, we report a facile single-step electrochemical CO<sub>2</sub> conversion into n-butanol with high faradaic efficiency, bypassing the need for a cascade system. C-C coupling via dimerization into C<sub>4</sub> products (n-butanol) was facilitated on the size dependent Cu-cubic morphology (average 30 nm), having dominate crystal facet orientation {100}. The process achieved a Faradaic efficiency of 21 % for n-butanol and 54.4 % for ethylene at a current density of 750 mA cm⁻², demonstrating stability of over 25 h of operation. Mechanistic insights were gained through Grand Canonical Density Functional Theory (GC-DFT) calculations, which revealed the favored energetics for the C–C coupling pathway on Cu-cubic {100} rather than C<sub>1</sub> products desorption. Furthermore, operando Raman spectroscopy tracked the CH<sub>2</sub>CHO* intermediate, which is important for the C-C coupling. This scalable flow cell system could offer a promising and sustainable route for industrial n-butanol production from CO<sub>2</sub>.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120752"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, characterization and activity of CeO2-doped coprecipitated NiAlOx catalysts for CO2 methanation ceo2掺杂共沉淀NiAlOx催化剂的合成、表征及活性研究

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-11-29 DOI: 10.1016/j.apcata.2025.120728

Heike Plendl , Patrick Schlachta , Tim Kratky , Kristína Krahulíková , Olaf Hinrichsen

{"title":"Synthesis, characterization and activity of CeO2-doped coprecipitated NiAlOx catalysts for CO2 methanation","authors":"Heike Plendl , Patrick Schlachta , Tim Kratky , Kristína Krahulíková , Olaf Hinrichsen","doi":"10.1016/j.apcata.2025.120728","DOIUrl":"10.1016/j.apcata.2025.120728","url":null,"abstract":"<div><div>CeO<sub>2</sub>-doped NiAlO<sub>x</sub> mixed oxide catalysts with molar Ce/Ni ratios of 0.05, 0.1 and 0.3 were prepared <em>via</em> coprecipitation and analyzed in detail regarding structure and activity in CO<sub>2</sub> methanation. A cerium-free NiAlO<sub>x</sub>, a CeO<sub>2</sub> and a NiCe-based sample served as references. Characterization revealed a two-phase composition of the doped materials consisting of a NiAlO<sub>x</sub> mixed oxide and a CeO<sub>2</sub> phase. The latter features highly reactive oxygen vacancies upon reduction with hydrogen, which provide additional binding sites for CO<sub>2</sub>. Reduction of the CeO<sub>2</sub> phase (and with that the formation of oxygen vacancies in the doped catalysts) was demonstrated to be only feasible in the presence of Ni which, in this context, acts as a hydrogenation catalyst providing dissociated hydrogen. The detection of completely reversible reduction-oxidation-reduction cycles of CeO<sub>2</sub>-doped NiAlO<sub>x</sub> by quasi <em>in-situ</em> XPS suggested diminutively-sized Ni particles provided by synthesis <em>via</em> coprecipitation. <em>Catalytic testing of the CeO</em><sub><em>2</em></sub><em>-doped samples in CO</em><sub><em>2</em></sub> <em>methanation revealed up to three times higher turnover frequencies and CH</em><sub><em>4</em></sub> <em>weight-time yields compared to undoped NiAlO</em><sub><em>x</em></sub><em>.</em> An optimum in catalytic activity at Ce/Ni = 0.1 indicated the prerequisite of a balance between Ni and Ce amounts in the catalyst to avoid undesired byproduct formation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120728"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic-oxidative cracking of n-butane and regeneration durability over La₂(SO₄)₃/SiO₂: Sulfur-loss mechanism and CeO₂-promoted two-step regeneration 正丁烷在La₂（SO₄）₃/SiO₂上的催化氧化裂化和再生耐久性：硫损失机理和ceo2促进的两步再生

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-11-29 DOI: 10.1016/j.apcata.2025.120731

Qiang Zhang , Hao Kang , LI Jian-xiang , Yan-hong Chen , Ye-qi Song , Yue-lin Wang

{"title":"Catalytic-oxidative cracking of n-butane and regeneration durability over La₂(SO₄)₃/SiO₂: Sulfur-loss mechanism and CeO₂-promoted two-step regeneration","authors":"Qiang Zhang , Hao Kang , LI Jian-xiang , Yan-hong Chen , Ye-qi Song , Yue-lin Wang","doi":"10.1016/j.apcata.2025.120731","DOIUrl":"10.1016/j.apcata.2025.120731","url":null,"abstract":"<div><div>A novel sulfate-based catalytic system was developed for the oxidative cracking of n-butane to high-value olefins under oxygen-free conditions. Leveraging the S⁶⁺/S²⁻ (SO₄²⁻/S²⁻) redox couple, the catalyst efficiently promotes lattice-oxygen transport and storage, enabling selective C–C bond scission in the absence of gaseous O₂. The catalyst was characterized by multiple analytical techniques including XRD, TPR, XRF, and XPS to analyze its phase structure, redox properties, elemental composition, and surface chemical state. The 10 % LaS/Si catalyst exhibited excellent catalytic performance: A total ethylene and propylene yield was 50.9 wt%, while a CO<sub>x</sub> (CO+CO<sub>2</sub>) yield was only 6.8 wt% at the conditions of 650 ℃. Deactivation was primarily attributed to sulfur loss, accompanied by a phase transition from La₂(SO₄)₃ to (LaO)₂SO₄ and La₂O₂S. A two-step regeneration process of carbon burning followed by sulfur replenishment using SO<sub>2</sub> was therefore developed. Incorporation of CeO₂ further enhanced cyclic regeneration stability, and the catalyst retained near-fresh activity after 17 regeneration cycles.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"711 ","pages":"Article 120731"},"PeriodicalIF":4.8,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fe-MOF-mediated europium-modified graphitic carbon nitride composites: A route to efficient light-driven benzene hydroxylation fe - mof介导的铕改性石墨氮化碳复合材料：高效光驱动苯羟基化的途径

IF 4.8 2区化学

Applied Catalysis A: General Pub Date : 2026-02-05 Epub Date: 2025-12-02 DOI: 10.1016/j.apcata.2025.120734

Xu Jia , Jiaolong Qiao , Zhiqi Song , Jiaqi Zhang , Liuxue Zhang , Guomin Yu , Xiulian Wang , Shaokang Liu

引用次数: 0