Journal of Catalysis最新文献

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Light-modulated redox site switching in PCN: Achieving overall water splitting PCN中的光调制氧化还原位点开关:实现整体水分解
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-05 DOI: 10.1016/j.jcat.2025.116312
Zhengyuan Jin , Yushi Huang , Lu Qi , Yajie Li , Shuang Tang , Yangsen Xu , Zhijun Dong
{"title":"Light-modulated redox site switching in PCN: Achieving overall water splitting","authors":"Zhengyuan Jin ,&nbsp;Yushi Huang ,&nbsp;Lu Qi ,&nbsp;Yajie Li ,&nbsp;Shuang Tang ,&nbsp;Yangsen Xu ,&nbsp;Zhijun Dong","doi":"10.1016/j.jcat.2025.116312","DOIUrl":"10.1016/j.jcat.2025.116312","url":null,"abstract":"<div><div>Polymeric carbon nitride (PCN) has emerged as a promising photocatalytic material, yet its redox site dynamics under varying light sources remain poorly understood. In this study, we employ Kelvin probe force microscopy (KPFM) and in situ photo-deposition of a co-catalyst to reveal light-induced shifts in PCN’s oxidation and reduction sites, demonstrating that these sites are not fixed but dynamically reconfigured under different irradiation conditions. Theoretical calculations further support this observation, showing that excitation wavelength influences charge distribution within the PCN framework. Building upon these findings, we establish a sequential co-catalyst loading strategy: visible light irradiation selectively reduces platinum (Pt) onto PCN, while subsequent simulated sunlight exposure facilitates site-specific oxidation, forming both reduction and oxidation co-catalysts in situ. This strategy enables sustained photocatalytic water splitting, achieving stoichiometric H<sub>2</sub> and O<sub>2</sub> production in pure water. By elucidating the interplay between light wavelength and redox site reversibility, our findings challenge conventional assumptions of static active sites and offer a new framework for designing light-responsive photocatalytic systems for sustainable hydrogen and oxygen production.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116312"},"PeriodicalIF":6.5,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Gas-phase dispersion engineering of PtCo intermetallic catalysts with enhanced compressive strain for high-performance PEMFCs 高性能pemfc增强压缩应变PtCo金属间催化剂的气相分散工程
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-05 DOI: 10.1016/j.jcat.2025.116314
Jun-Fei Shen , Gui-Ming Wu , Na Tian , Hai-Wei Liang , Zhi-You Zhou , Shi-Gang Sun
{"title":"Gas-phase dispersion engineering of PtCo intermetallic catalysts with enhanced compressive strain for high-performance PEMFCs","authors":"Jun-Fei Shen ,&nbsp;Gui-Ming Wu ,&nbsp;Na Tian ,&nbsp;Hai-Wei Liang ,&nbsp;Zhi-You Zhou ,&nbsp;Shi-Gang Sun","doi":"10.1016/j.jcat.2025.116314","DOIUrl":"10.1016/j.jcat.2025.116314","url":null,"abstract":"<div><div>Pt-based alloys demonstrate superior catalytic activity for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs), yet their instability due to transition metal leaching poses a critical challenge. While structurally ordered PtM intermetallic compounds (IMCs) exhibit enhanced stability compared to disordered alloys, their conventional high-temperature synthesis often induces particle aggregation and diminished catalytic performance. Herein, we present a solvent-free gas-phase dispersion strategy leveraging the volatility of acetylacetonate precursors to synthesize ordered PtCo IMC nanoparticles (PtCo/C-IMC) with ultrasmall size (3.0 nm) and uniform compressive lattice strain. The PtCo/C-IMC catalyst delivers exceptional ORR activity (0.92 A mg<sub>Pt</sub><sup>−1</sup> at 0.9 V) and durability (6.8 % mass activity decay after 100,000 cycles). In H<sub>2</sub>-air PEMFCs, it achieves a peak power density of 1.53 W cm<sup>−2</sup> at 0.6 V and demonstrates outstanding operational stability, with voltage losses of only 17 mV (0.8 A cm<sup>−2</sup>) and 21 mV (1.5 A cm<sup>−2</sup>) after 30,000 accelerated durability test (ADT) cycles, surpassing the DOE 2025 targets and outperforming most reported catalysts. Density functional theory (DFT) calculations and post-ADT characterization reveal that the engineered compressive strain strengthens Pt-Co atomic interactions, optimizes the electronic structure, and elevates the vacancy formation energy of Co. These effects enhance both catalytic activity and stability, offering a scalable pathway for the design of advanced PEMFC catalysts.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116314"},"PeriodicalIF":6.5,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
An adaptable model to predict the induction time of the Phillips catalyst 一个预测菲利普斯催化剂诱导时间的适应性模型
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-03 DOI: 10.1016/j.jcat.2025.116311
Juili D. Parab , Max P. McDaniel , Friederike C. Jentoft
{"title":"An adaptable model to predict the induction time of the Phillips catalyst","authors":"Juili D. Parab ,&nbsp;Max P. McDaniel ,&nbsp;Friederike C. Jentoft","doi":"10.1016/j.jcat.2025.116311","DOIUrl":"10.1016/j.jcat.2025.116311","url":null,"abstract":"<div><div>The Phillips catalyst, which accounts for a large fraction of the world’s linear polyethylene, is known for an induction period without appreciable ethylene consumption, followed by a period of rising activity, which together can last an hour or two. In this investigation, the effect of trace amounts of a ubiquitous contaminant, molecular oxygen, on the length of the induction period is determined. Experiments were conducted in a tubular flow reactor with a packed bed of 1 or 3 wt% Cr on SiO<sub>2</sub>. The protocol was to first treat Cr(VI)/SiO<sub>2</sub> at a temperature of 600 °C in 50 % O<sub>2</sub>, then cool and adjust the residual O<sub>2</sub> concentration at the reactor inlet to between about 50 to 500 ppm by an inert gas purge, with optional application of 1-hexene as reductant. Polymerization was conducted at a temperature of 100 °C and ethylene partial pressures of 10 to 18 kPa. The length of the induction period and the time to reach maximum activity correlated with the O<sub>2</sub> concentration at the inlet. The observations were qualitatively confirmed by high-pressure (3.79 MPa) experiments with slurried catalyst, which also demonstrated that the effect of O<sub>2</sub> can be transient, and the catalyst reaches its full polymerization activity. An adaptable model of competing reduction and reoxidation rates in the packed-bed reactor is presented that accurately predicts the length of the induction time based on O<sub>2</sub> level and the amount of catalyst loaded into the reactor.</div><div>.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116311"},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Designing a polyoxometalate-pillared metal-organic framework with long-range delocalization for photocatalytic oxidative cross-coupling 用于光催化氧化交叉偶联的远距离离域多氧金属柱型金属有机骨架的设计
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-03 DOI: 10.1016/j.jcat.2025.116309
Jiachen Jiao , Lei Zhang , Haina Hu , Hui Sun , Ziqing Xu , Yanfeng Pu , Qiuxia Han
{"title":"Designing a polyoxometalate-pillared metal-organic framework with long-range delocalization for photocatalytic oxidative cross-coupling","authors":"Jiachen Jiao ,&nbsp;Lei Zhang ,&nbsp;Haina Hu ,&nbsp;Hui Sun ,&nbsp;Ziqing Xu ,&nbsp;Yanfeng Pu ,&nbsp;Qiuxia Han","doi":"10.1016/j.jcat.2025.116309","DOIUrl":"10.1016/j.jcat.2025.116309","url":null,"abstract":"<div><div>The development of a simple, mild and efficient strategy for synthesizing benzimidazole core structures and their 2-substituted derivatives remains challenging, particularly under ambient conditions using visible light irradiation without external cocatalysts. In this study, we synthesized a new polyoxometalate-based metal–organic framework (POMOF) [Ni(TPT)(H<sub>2</sub>O)<sub>5</sub>]{[Ni(TPT)(H<sub>2</sub>O)<sub>3</sub>][Ni<sub>0.5</sub>(H<sub>2</sub>O)] (H<sub>2</sub>W<sub>12</sub>O<sub>40</sub>)}·TPT·H<sub>2</sub>O (<strong>NiW–TPT)</strong> by incorporating [H<sub>2</sub>W<sub>12</sub>O<sub>40</sub>]<sup>6-</sup> clusters into a photoactive MOF matrix through hydrothermal synthesis. The designed architecture features strategically arranged electron donors and acceptors, coupled with strong interligand interactions, which synergistically promote efficient electron-hole pair separation. Notably, the integration of polyoxometalate (POM) clusters as “electron sponges” within the catalyst framework significantly suppresses charge recombination. This unique configuration enables selective generation of superoxide radicals (O<sub>2</sub><sup>•–</sup>) via type I photogenerated electron transfer pathways under aerobic conditions. The optimized photocatalyst demonstrated exceptional performance, achieving high-yield synthesis a range of valuable benzimidazole derivatives under mild conditions, including pharmaceutically relevant compounds such as pipemidic acid and thiabendazole. Remarkably, this method proved particularly effective for condensing reactive heterocyclic aldehydes. Furthermore, the <strong>NiW–TPT</strong> catalyst maintained over 93 % of its initial activity through five consecutive recycling cycles, demonstrating excellent operational stability.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116309"},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144566749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Abridging the modeling of CO oxidation on single-atom catalysts: From microkinetics to descriptor-based analysis 简化单原子催化剂上CO氧化的建模:从微动力学到基于描述符的分析
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-02 DOI: 10.1016/j.jcat.2025.116308
Hai-Yan Su , Keju Sun , Xiufang Ma , Xiangxuan Huang , Junquan Feng , Federico Calle-Vallejo
{"title":"Abridging the modeling of CO oxidation on single-atom catalysts: From microkinetics to descriptor-based analysis","authors":"Hai-Yan Su ,&nbsp;Keju Sun ,&nbsp;Xiufang Ma ,&nbsp;Xiangxuan Huang ,&nbsp;Junquan Feng ,&nbsp;Federico Calle-Vallejo","doi":"10.1016/j.jcat.2025.116308","DOIUrl":"10.1016/j.jcat.2025.116308","url":null,"abstract":"<div><div>Single-atom catalysts (SACs) display prominent performance and high metal utilization for numerous catalytic processes. Harnessing the interaction between single atoms and supports is crucial to improve the performance of SACs. By means of density functional theory calculations and microkinetic modeling including adsorbate interactions, we expose the promising synergy between 3<em>d–</em>5<em>d</em> single metal atoms (M) and TiO<sub>2</sub>(110) for CO oxidation. Upon a rigorous analysis, we identify the adsorption energy of O at M sites as a simple and robust descriptor to abridge the design of catalysts for CO oxidation on M/TiO<sub>2</sub> catalysts, so that enhanced activities are predicted at mild O adsorption energies. Single Pt and Rh atoms provide the largest enhancement around 400 K, with CO<sub>2</sub> formation rates 7–8 orders of magnitude higher than on TiO<sub>2</sub>(110). Non-precious Ta/TiO<sub>2</sub> and Mn/TiO<sub>2</sub> also exhibit salient activities. This work highlights the often disregarded yet central role of adsorbate interactions in CO oxidation.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116308"},"PeriodicalIF":6.5,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144533720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
The microscopic mechanisms and essential factors governing regioselectivity in Rh-catalyzed hydroformylation of allyl acetate via DFT and microkinetic modeling 通过DFT和微动力学模型研究了rh催化醋酸烯丙酯氢甲酰化反应的微观机制和区域选择性的基本因素
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-01 DOI: 10.1016/j.jcat.2025.116307
Minhua Zhang , Yuzhe Sun , Lingtao Wang , Hao Gong , Yifei Chen
{"title":"The microscopic mechanisms and essential factors governing regioselectivity in Rh-catalyzed hydroformylation of allyl acetate via DFT and microkinetic modeling","authors":"Minhua Zhang ,&nbsp;Yuzhe Sun ,&nbsp;Lingtao Wang ,&nbsp;Hao Gong ,&nbsp;Yifei Chen","doi":"10.1016/j.jcat.2025.116307","DOIUrl":"10.1016/j.jcat.2025.116307","url":null,"abstract":"<div><div>The direct hydroformylation of allyl acetate followed by hydrogenation represents a novel route for 1,4-butanediol production with significant industrial potential and market prospects. In this study, we employed Density Functional Theory (DFT) and Microkinetic Modeling (MKM) to comparatively investigate two representative Rh-based catalysts with distinct product distributions (RhH(CO)<sub>2</sub>(Xantphos) and RhH(CO)<sub>2</sub>(PPh<sub>3</sub>)<sub>2</sub>), systematically elucidate the mechanisms for improving the selectivity and regulation principles of this reaction. Theoretical calculations reveal that the regioselectivity is primarily determined by the olefin insertion step. Xantphos ligand reduces the electron density of the Rh center and provides a sterically favorable environment for the linear pathway. Additionally, the acetoxy group in allyl acetate exerts a repulsive interaction with the Rh-carbonyl, directing Rh to preferentially coordinate with the β-C, thereby significantly enhancing the formation of 4-acetoxybutyraldehyde. In contrast, the PPh<sub>3</sub>-modified Rh catalyst exhibits lower steric hindrance along the branched pathway, thus favoring the formation of branched aldehydes. Experimental investigations demonstrate that hydrogenolysis of allyl acetate predominantly occurs at the uncoordinated Rh sites, and the elevated H<sub>2</sub> concentration and higher temperature will promote this side reaction. For Xantphos, MKM simulations indicate that the increased pressure and optimized syngas composition (CO/H<sub>2</sub> = 0.5–2) can lead to linear aldehyde selectivity exceeding 98 %. Similarly, in the PPh<sub>3</sub> system, high pressure and a near-equimolar syngas ratio favor the formation of branched aldehyde. These findings unveil the intrinsic relationships between ligand design, reaction conditions and selectivity, establishing a structure–activity framework for hydroformylation of acetoxy-functionalized olefins. This work provides critical theoretical guidance for the rational design of efficient catalysts and advances the development of scalable 1,4-BDO production process.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116307"},"PeriodicalIF":6.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144533721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Efficient one-pot synthesis of 2,5-furandicarboxylic acid from fructose and 5-hydroxymethylfurfural using synergistically active Ce-Al composite catalyst under mild conditions 在温和条件下,采用协同活性Ce-Al复合催化剂,以果糖和5-羟甲基糠醛为原料,高效一锅合成2,5-呋喃二羧酸
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-07-01 DOI: 10.1016/j.jcat.2025.116310
Pratap M. Ganje , Chang-Gu Lee , Hern Kim
{"title":"Efficient one-pot synthesis of 2,5-furandicarboxylic acid from fructose and 5-hydroxymethylfurfural using synergistically active Ce-Al composite catalyst under mild conditions","authors":"Pratap M. Ganje ,&nbsp;Chang-Gu Lee ,&nbsp;Hern Kim","doi":"10.1016/j.jcat.2025.116310","DOIUrl":"10.1016/j.jcat.2025.116310","url":null,"abstract":"<div><div>Using <em>tert</em>-butyl hydroperoxide (TBHP) as a low-cost oxidant, we synthesized, characterized, and evaluated heterogeneous bifunctional oxide catalysts composed of the non-noble metals Ce and Al in specific molar ratios, supported on glucose-derived carbon, for the conversion of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (2,5-FDCA) in dimethyl sulfoxide (DMSO). TBHP offers two advantages: it functions as an oxidant and generates <em>tert</em>-butanol, a valuable industrial solvent. We fully investigated catalyst loading, temperature, 5-HMF:TBHP molar ratio, reaction time, and reuse impact on product yield while correlating with the catalyst’s textural and chemical properties. CAOC-1, the best catalyst, achieved 98 % conversion, 82.0 % yield, and 83.54 % selectivity of 2,5-FDCA in optimal conditions (5-HMF (1 mmol), TBHP (9 mmol), DMSO (5 gm), CAOC-1 (50 mg), Temp (120 °C), 24 h), with minimal yield reduction over five reuse cycles. We used the bifunctional CAOC-1 in a one-pot, two-step system to directly transform fructose to 2,5-FDCA under mild conditions (fructose (1 mmol), TBHP (9 mmol), DMSO (5 gm), CAOC-1 (50 mg), temp (120 °C), 26 h) with minimal process modifications. The yield and selectivity of 2,5-FDCA were 80.26 % and 83.94 %, respectively. We proposed mechanistic pathways for dehydration and oxidation reactions, highlighting the catalyst’s bifunctional nature in facilitating high 2,5-FDCA yields from fructose and 5-HMF. The formation of the distinct redox environment of Ce and Al on carbon, the various oxidation states, and the oxygen vacancies in the CAOC-1 catalyst—all of which most likely operate as base-free oxidation active sites. One-pot reaction processes involve bifunctional CAOC-1 catalysts, –OH, and redox active sites (Ce), which play a significant role in dehydration and oxidation reactions, respectively. 2,5-FDCA is crucial to produce polyethylene 2,5-furandicarboxylate (PEF), a sustainable bioplastic and alternative to PET.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116310"},"PeriodicalIF":6.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144533967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
In situ engineering carbon-coated hydrotalcite-derived ZnxAlOy-C catalysts for efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol 原位工程碳包覆水滑石衍生的ZnxAlOy-C催化剂,用于糠醛高效催化转移加氢制糠醇
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-06-30 DOI: 10.1016/j.jcat.2025.116301
Junling Xie, Guyu Yin, Xiaoyu Niu, Yujun Zhu
{"title":"In situ engineering carbon-coated hydrotalcite-derived ZnxAlOy-C catalysts for efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol","authors":"Junling Xie,&nbsp;Guyu Yin,&nbsp;Xiaoyu Niu,&nbsp;Yujun Zhu","doi":"10.1016/j.jcat.2025.116301","DOIUrl":"10.1016/j.jcat.2025.116301","url":null,"abstract":"<div><div>Catalytic Transfer Hydrogenation (CTH) has been widely reported as an efficient, safe and green method for catalytic hydrogenation of biomass-derived platform molecules in recent years. In this work, we fabricated tunable Zn/Al molar ratio carbon-coated hydrotalcite-derived Zn-Al oxide composites (Zn<sub>x</sub>AlO<sub>y</sub>-C), where Isopropanol (IPA) served dual roles as hydrogen donor and reaction medium, to achieve selective hydrogenation of Furfural (FAL) into Furfuryl Alcohol (FOL). Under mild reaction conditions, the conversion of FAL and the selectivity of FOL can reach 92.0% and 93.8% over Zn<sub>2</sub>AlO<sub>y</sub>-C, respectively. Through analysis, the reasons for the high yield of FOL are that the surface carbon material effectively increases the specific surface area of the catalyst, enhances the adsorption capacity of the catalyst to the reactants, and more effectively promotes the migration of the reactants from the solution to the Zn-O-Al active site, while by adjusting the Zn/Al ratio, a suitable acid/base ratio is found to reduce the occurrence of side reactions and improve the selectivity. The current synthesis method provides an effective way to design carbon-containing composite catalysts with controllable catalytic application performance.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116301"},"PeriodicalIF":6.5,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Lowering the barrier to access information-rich transient kinetic data for machine learning methods 为机器学习方法降低访问信息丰富的瞬态动力学数据的障碍
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-06-28 DOI: 10.1016/j.jcat.2025.116306
B. Ariana Thompson , Shengguang Wang , Konstantinos Goulas , M. Ross Kunz , Rebecca Fushimi
{"title":"Lowering the barrier to access information-rich transient kinetic data for machine learning methods","authors":"B. Ariana Thompson ,&nbsp;Shengguang Wang ,&nbsp;Konstantinos Goulas ,&nbsp;M. Ross Kunz ,&nbsp;Rebecca Fushimi","doi":"10.1016/j.jcat.2025.116306","DOIUrl":"10.1016/j.jcat.2025.116306","url":null,"abstract":"<div><div>Transient kinetic data contain a wealth of information about intrinsic features of a catalyst as well as the reaction mechanism. Currently, high volume transient data is underutilized, and data science methods could increase the value of information that can be extracted from this data, integrate experimental with theoretical data sources, and accelerate the pace of catalyst technology advancement. Transient kinetic characterizations with simple probe molecules exhibiting reversible adsorption, irreversible adsorption and bulk-surface diffusion are presented as training components for similar experiments with more complex surface reactions. By increasing the availability and accessibility of transient kinetic data through details of its structure and acquisition, we aim to decrease the barrier for data scientists to apply machine learning methods to this valuable data source.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116306"},"PeriodicalIF":6.5,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Synergistic regulation of oxygen vacancy and Lewis acid sites by Ru loading in LaMnOx catalysts for boosting 2-butanol production from levulinic acid and levulinates 负载Ru对LaMnOx催化剂中氧空位和路易斯酸位点的协同调节,促进乙酰丙酸和乙酰丙酸酯生产2-丁醇
IF 6.5 1区 化学
Journal of Catalysis Pub Date : 2025-06-28 DOI: 10.1016/j.jcat.2025.116302
Lingling Gao , Yiwei Long , Zhiguo Xiao , Lungang Chen , Guozhang Chang , Wenguang Zhou , Chenguang Wang , Yong Liu
{"title":"Synergistic regulation of oxygen vacancy and Lewis acid sites by Ru loading in LaMnOx catalysts for boosting 2-butanol production from levulinic acid and levulinates","authors":"Lingling Gao ,&nbsp;Yiwei Long ,&nbsp;Zhiguo Xiao ,&nbsp;Lungang Chen ,&nbsp;Guozhang Chang ,&nbsp;Wenguang Zhou ,&nbsp;Chenguang Wang ,&nbsp;Yong Liu","doi":"10.1016/j.jcat.2025.116302","DOIUrl":"10.1016/j.jcat.2025.116302","url":null,"abstract":"<div><div>The conversion of biomass-derived levulinic acid (LA) into 2-butanol offers a promising route to produce valuable secondary alcohols under sustainable conditions. In this study, a series of Ru-LaMnOx catalysts with varied Ru loadings were synthesized and their structural, electronic, and acidic properties were systematically characterized. Increasing Ru loading enhanced the surface Ru<sup>0</sup>/Ru<sup>4+</sup> ratio and promoted the reduction of Mn species. These modifications led to an increased concentration of surface oxygen vacancies (Ov) and a higher density of Lewis acid sites, both of which are critical for the Meerwein–Ponndorf–Verley (MPV) reduction and subsequent hydrogenolysis of LA. Catalytic performance tests revealed that the optimized Ru<sub>3</sub>LaMnOx catalyst achieved a 2-butanol yield of 99.1 % at 200 °C under 5 MPa H<sub>2</sub> and 8 h, along with good recyclability. This study identified the ring-opening of γ-valerolactone as the rate-determining step, with Ru<sup>0</sup> sites and adjacent Ov facilitating hydrogen transfer and selective C–C bond cleavage. Density functional theory calculations confirmed that surface Ov enhanced LA and isopropanol adsorption and promote essential electron transfer processes. These findings demonstrate that tuning Ru loading to synergistically control electronic and acidic properties is a promising strategy for efficient biomass conversion.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"450 ","pages":"Article 116302"},"PeriodicalIF":6.5,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
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