Applied Catalysis A: General最新文献

{"title":"Oxygen plasma synthesis of Pd/GO with enhanced co-adsorption ability of 4-nitrophenol and NaBH4 for boosting 4-nitrophenol reduction activity","authors":"Lingyu Zhao ,&nbsp;Xiaonan Du ,&nbsp;Fei Gao ,&nbsp;Yue Hua ,&nbsp;Hong Li ,&nbsp;Xiuling Zhang ,&nbsp;Lanbo Di","doi":"10.1016/j.apcata.2025.120203","DOIUrl":"10.1016/j.apcata.2025.120203","url":null,"abstract":"<div><div>Herein, oxygen plasma was adopted to prepare graphite oxide (GO) supported Pd catalyst (Pd/GO-O₂P) with abundant oxygen-containing functional groups (OCGs) and defects on the support, and small-sized Pd nanoparticles. These enhanced the co-adsorption of the 4-nitrophenolate anions and BH₄^- on the Pd/GO-O₂P catalyst, and promoted the generation of H*ads (adsorbed hydrogen on the catalyst surface) and H*abs (absorbed hydrogen in the catalyst lattices), which greatly accelerated the reaction rate from 4-NP to 4-AP. The rate constant <em>k</em> of Pd/GO-O₂P for 4-NP reduction is up to 3.47 min⁻¹, which is 15.8 and 347 times that of commercial Pd/C (Sigma-Aldrich) and thermal reduction-prepared Pd/rGO-H₂C, respectively. After seven reaction cycles, the <em>k</em> value of Pd/GO-O₂P was still as high as 72.6 % of the initial value. Oxygen plasma can realize simple, fast and green preparation of high-performance 4-NP reduction catalysts, which has important reference significance for accurate design, preparation, and application of metal catalysts.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120203"},"PeriodicalIF":4.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563064","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}

{"title":"Bifunctional mechanism for low-temperature Methanol-SCR on H-FER zeolite doped by trace amount of cobalt","authors":"Dekai Liu ,&nbsp;Han Sun ,&nbsp;Ziying Hong ,&nbsp;Chenxi He ,&nbsp;Takashi Toyao ,&nbsp;Masaya Matsuoka ,&nbsp;Haijun Chen","doi":"10.1016/j.apcata.2025.120201","DOIUrl":"10.1016/j.apcata.2025.120201","url":null,"abstract":"<div><div>Green methanol is a promising alternative to fossil fuels in the fields where decarbonization is a major challenge, such as maritime transport. Selective catalytic reduction of NO_x by methanol (Methanol-SCR) offers a perfect deNO_x solution for methanol engines because of the co-existence of methanol and NO_x in the exhaust. Here, we developed Co-H-FER zeolites containing only trace amount of cobalt as low as 0.05 wt% as Methanol-SCR catalysts, giving rise to a surprised enhancement of deNO_x activity at low temperature region (250–350 °C) with excellent selectivity towards N₂. Atomically dispersed [Co-OH]^2 + species play a vital role in facilitating the generation of HONO species, which contribute to the formation of nitromethane as an initial step for the overall Methanol-SCR reaction. Bifunctional catalytic active sites including both [Co-OH]²⁺ sites and zeolite solid acid sites has been proposed for Methanol-SCR at low temperature.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120201"},"PeriodicalIF":4.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552641","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}

{"title":"Ethylene epoxidation over shape-selective silver-based catalysts","authors":"Kaveh Shariati,&nbsp;Azadeh Mehrani,&nbsp;Trevor Corsello,&nbsp;Mason Kelley,&nbsp;Jochen Lauterbach","doi":"10.1016/j.apcata.2025.120200","DOIUrl":"10.1016/j.apcata.2025.120200","url":null,"abstract":"<div><div>The catalytic activity and selectivity of silver catalysts in the ethylene epoxidation reaction are intrinsically linked to their faceting. Here, silver nanowires, representing Ag(100), and silver spherical catalysts, embodying Ag(111), were synthesized using modified polyol and wet impregnation methods, respectively. Recognizing the size-dependent nature of catalysis, two distinct sizes of spherical particles were synthesized to serve as comparative benchmarks for silver nanowire activity and selectivity. Silver spherical catalysts were promoted with optimal cesium loading. Furthermore, silver nanowires underwent cesium promotion at varying loadings, as meticulously detailed in the methodology. Unpromoted silver nanowires exhibited superior ethylene oxide selectivity compared to both unpromoted and promoted spherical catalysts. Additionally, the ethylene oxide selectivity was enhanced with the addition of the promoter, achieving activity and selectivity levels comparable to the best reported in the literature. Morphological analysis of spent silver nanowire catalysts revealed exceptional stability even after extended study periods.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"697 ","pages":"Article 120200"},"PeriodicalIF":4.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solvent-free phosphorus modification of Pt/Al2O3 catalysts to improve dispersion and dehydrogenation activity","authors":"Abelina Ellert ,&nbsp;Fei Ding ,&nbsp;Andreas Hutzler ,&nbsp;Felix Herold ,&nbsp;Luca Piccirilli ,&nbsp;Magnus Rønning ,&nbsp;Ton V.W. Janssens ,&nbsp;Dorothea Wisser ,&nbsp;Patrick Schühle","doi":"10.1016/j.apcata.2025.120199","DOIUrl":"10.1016/j.apcata.2025.120199","url":null,"abstract":"<div><div>This study introduces a solvent-free gas-phase method for modifying Al₂O₃-supported platinum (3 wt%) catalysts with phosphorus (P) to enhance Pt dispersion and dehydrogenation activity. The process involves decomposing NaH₂PO₂ at 600 °C, releasing PH₃, interacting with Pt on the catalyst surface. P-modified catalysts showed up to a 24 % increase in activity for perhydro-benzyltoluene dehydrogenation within a P:Pt ratio of 0.6–2.6. Additionally, they exhibited high resistance to sintering, maintaining Pt particle sizes of ∼0.9 nm even at 600 °C. Characterization using CO chemisorption, STEM NMR, and XPS revealed that PH₃ deposits phosphorus on the catalyst, which then oxidizes via support lattice oxygen. At 600 °C, this oxidized phosphorus migrates to the support/metal interface, stabilizing Pt nanoparticles and preventing sintering. However, when the P:Pt ratio exceeds 2.6, excess phosphorus remains on the surface, deactivating active sites. This study highlights the role of POₓ species in stabilizing Pt nanoparticles and optimizing catalyst performance.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120199"},"PeriodicalIF":4.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced catalytic performance in oxidative dehydrogenation of ethane via trace nickel oxide and boron nitride synergy","authors":"Guohui Zhong ,&nbsp;Lei Cao ,&nbsp;Xingzhi Wang ,&nbsp;Rongliang Shang ,&nbsp;Fan Wu ,&nbsp;Yifan Wu ,&nbsp;Yixiao Liu ,&nbsp;Jin Xie","doi":"10.1016/j.apcata.2025.120197","DOIUrl":"10.1016/j.apcata.2025.120197","url":null,"abstract":"<div><div>The oxidative dehydrogenation of ethane (ODHE) is an attractive route for ethylene production. While hexagonal boron nitride (h-BN) demonstrates excellent ethylene selectivity as a catalyst for ODHE, its limited ability to activate ethane necessitates high reaction temperatures. In this study, we developed a series of h-BN modified with trace amounts of NiO nanoparticles (<em>x</em>NiO/h-BN) to enhance ODHE performance. At a NiO loading of 1.0 wt%, the composite catalyst achieved optimal performance, with 30.4% ethane conversion and 86.6% ethylene selectivity at 590°C, representing a 1.5-fold improvement in activity over pristine h-BN. Experimental results reveal that trace NiO nanoparticles do not promote the decomposition of h-BN to generate excessive BO_<em>x</em> species. Instead, these exposed nanoparticles play a synergistic role in activating ethane. The generated active ethyl radicals are rapidly dehydrogenated by adjacent BO_<em>x</em> species, thereby enhancing catalytic activity while maintaining selectivity for the target product. This work advances the understanding of co-catalytic interactions between metal oxide and h-BN and highlights the negative effects of BO_<em>x</em> overlayers on NiO surfaces, offering valuable insights for designing h-BN-based catalysts in ODHE.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120197"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552376","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}

{"title":"Enhanced electrooxidation of furfural to 2-furoic acid over NiCo2O4/NF: Optimization, in-situ monitoring and continuous AEM cell evaluation","authors":"Xincheng Wang ,&nbsp;Huanjie Zhang ,&nbsp;Yuxin Liang ,&nbsp;Long Huang ,&nbsp;Hao Wang","doi":"10.1016/j.apcata.2025.120169","DOIUrl":"10.1016/j.apcata.2025.120169","url":null,"abstract":"<div><div>The electrooxidation of furfural (FF) to 2-furoic acid (FA) offers a promising route to produce fine chemicals from renewable biomass. Currently, readily prepared nanosheet catalysts NiCo₂O₄/NF were developed for the electrooxidation of FF to FA. The catalysts were characterized via SEM, XRD, and XPS, revealing a Co³⁺ active site and a spinel structure that facilitated efficient electron transfer. An optimum FA yield of 80.44 % and an FF conversion of 83.12 % were obtained at 1.0 M KOH, 1.45 V vs. RHE and 40 °C, with a Faraday efficiency of 86.95 %. A continuous flow anion exchange membrane electrolysis cell was further designed to demonstrate the scalability of the process, achieving an FA selectivity of 93.37 %. Moreover, in-situ electrochemical FTIR accomplished real-time dynamic monitoring of the conversion of FF to FA, highlighting the potential of nickel<img>cobalt transition metal oxides in the sustainable upgrading of biomass-derived chemicals.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120169"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552640","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}

{"title":"Unveiling the decisive role of surficial properties on CuOx/CeO2 catalysts during CO preferential oxidation","authors":"Junfang Ding ,&nbsp;Changjin Xu ,&nbsp;Hao Chai ,&nbsp;Xinyi Yao ,&nbsp;Yang Hao ,&nbsp;Yingkang Yang ,&nbsp;Xiaomin Sun ,&nbsp;Guilan Fan ,&nbsp;Shanghong Zeng","doi":"10.1016/j.apcata.2025.120198","DOIUrl":"10.1016/j.apcata.2025.120198","url":null,"abstract":"<div><div>The surficial properties of heterogeneous catalysts are vital in determining their catalytic performance. Herein, we take K-CuO_<em>x</em>/CeO₂ as a typical composite to unveil the decisive role of surficial properties on the adsorption strengths of reactants, configurations of intermediates and desorption of products during CO preferential oxidation. Results show that adding K initially has minimal effect, but too much drastically reduces catalytic performance. Detailed analyses indicate adding K to CuO_<em>x</em>/CeO₂ catalyst increases the surficial basic sites, which not only inhibits O₂ activation and CO₂ desorption, but also reduces surface defects, Cu⁺ species and hydroxy species. Such a vast difference in adsorption behavior and surface species in turn lead to the transformation of intermediates from carboxylates to carbonates. DFT calculations further reveal that the barrier of rate-determining step for CuO_<em>x</em>/CeO₂ catalyst in carboxyl path is lower than that of K-CuO_<em>x</em>/CeO₂ in carbonate path, thus rendering a higher catalytic activity of CuO_<em>x</em>/CeO₂.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120198"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528752","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}

{"title":"Sn@SBA-15 with temperature responsive acid-base dual functional sites for catalyzing biomass-derived sugars to ethyl lactate","authors":"Yifan Liu,&nbsp;Jiangang Wang,&nbsp;Yuhan Liu,&nbsp;Yuan Zhang,&nbsp;Hongzi Tan,&nbsp;Hongyou Cui","doi":"10.1016/j.apcata.2025.120187","DOIUrl":"10.1016/j.apcata.2025.120187","url":null,"abstract":"<div><div>Herein, a series of Sn-based catalysts supported on SBA-15 with temperature responsive ability to in situ construct acidic and basic sites are reported for efficient conversion of biomass-derived sugars into ethyl lactate (EL). Based on the investigation on the effects of the molar ratio of Cl/OH in Sn(OH)_<em>x</em>Cl_<em>2-x</em> and the support types, it is found that Sn(OH)_0.5Cl_1.5@SBA-15 is an excellent catalyst in catalytic conversion of various sugars to EL, achieving a maximum EL yield of 68.1 % from sucrose. The in situ generated basic SnO sites play important roles in accelerating the retro-aldol condensation reaction, while the concomitantly released acidic sites (Sn^2 +, SnCl⁺ and H⁺) could catalyze the reactions of hydrolysis, isomerization, intermolecular rearrangement and esterification to EL. Benefiting from the temperature responsive effect, not only can the reaction pathways be regulated toward high EL selectivity, but also the catalyst can be recycled easily. This research paves an avenue for exploring efficient catalysts for biomass valorization.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120187"},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528753","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}

{"title":"Preparation of 2,5-furandicarboxylic acid through continuous flow oxidation of 5-hydroxymethylfurfural under hypoxic condition","authors":"Bei Jiang ,&nbsp;Ling Zhang ,&nbsp;Wenjing Wang ,&nbsp;Xin Qin ,&nbsp;Shenyan Xu ,&nbsp;Chunyu Che ,&nbsp;Chuanqi Zhang ,&nbsp;Wenzhong Wang","doi":"10.1016/j.apcata.2025.120188","DOIUrl":"10.1016/j.apcata.2025.120188","url":null,"abstract":"<div><div>Continuous flow reactors have seldom been employed in investigations concerning 5-hydroxymethylfurfural (HMF) oxidation reactions. The root cause lies in the fact that, at atmospheric pressure, the solution exhibits a rather low oxygen content. In this research, we present a Ru-loaded manganese oxide octahedral molecular sieve (OMS-2) catalyst. Remarkably, this catalyst has exhibited the ability to achieve a 100 % conversion rate of HMF and attain a 94.5 % yield of FDCA under ambient air conditions within a continuous flow reactor. This can be mainly attributed to the superior oxygen adsorption and activation capacity of 0.05Ru-OMS-2. Thanks to this, it exhibits good performance even under hypoxic conditions. The combined results of EPR and XPS clearly showed that the Ru in the catalyst not only boosts the adsorption and transformation of O₂ but also weakens the Mn-O bond in the carrier, thus enhancing the activity of lattice oxygen.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120188"},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509501","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}

{"title":"Effect of polyethylene glycol addition on Cu-Mn-Ce-Ox/TiO2/CH catalyst in microwave catalytic combustion of toluene","authors":"Mengyao Luo ,&nbsp;Longli Bo ,&nbsp;Sining Huang ,&nbsp;Haiguang Wang ,&nbsp;Zhiyun Yang ,&nbsp;Danjun Wang ,&nbsp;Ying Yang ,&nbsp;Zhe Li ,&nbsp;Lu Wang","doi":"10.1016/j.apcata.2025.120185","DOIUrl":"10.1016/j.apcata.2025.120185","url":null,"abstract":"<div><div>Adding polyethylene glycol (PEG) can lessen the shedding of coating and improve the dispersion of active particles for monolithic catalysts. In this study, a series of Cu-Mn-Ce-O_<em>x</em>(P_<em>x</em>)/TiO₂(P_<em>x</em>)/CH catalysts were prepared with different PEG molecular weights (P_<em>x</em>, x = 200, 1000, and 2000) to explore the effect of P_<em>x</em> addition on the structure and activity of the catalysts in microwave catalytic combustion of toluene. The research showed that P_<em>x</em> addition (1 wt% dosage to titanium sol) to coating reduced the particle size of titanium sol and decreased the shedding rate of TiO₂ coating 0.9–0.93 %, and P_<em>x</em> addition (3 wt% dosage to CH's water absorption) to active components further lessened the shedding rate of the catalysts 1.93–2.04 %. Under an initial toluene concentration of 1500 mg/m³ and a gas hourly space velocity of 2260 h⁻¹, Cu-Mn-Ce-O_<em>x</em>(P₁₀₀₀)/TiO₂(P₁₀₀₀)/CH owned the highest catalytic activity and its complete removal temperature (T_R100) and mineralization temperature (T_M100) to toluene were 180℃ and 218℃, respectively, which were lower 33℃ and 16℃, 56℃ and 58℃ than Cu-Mn-Ce-O_<em>x</em>/TiO₂(P₁₀₀₀)/CH and Cu-Mn-Ce-O_<em>x</em>/TiO₂/CH catalysts separately, and its activity maintained steadily with toluene removal efficiencies of 99–91 % over 12 h. The improved activity is attributed to the uniform dispersion of active particles, larger specific surface area, and increased adsorbed oxygen, facilitated by pore-forming and steric-hindrance effects of P_<em>x</em>. Electron transfer among Mn⁴⁺/Mn³⁺/Mn²⁺, Cu²⁺/Cu⁺, and Ce⁴⁺/Ce³⁺ promoted the oxidation of toluene under microwave irradiation. Therefore, the research provides technological support for developing transition metals-based catalysts for industrial VOC waste gas treatment.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"696 ","pages":"Article 120185"},"PeriodicalIF":4.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509500","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}