EES catalysis最新文献

{"title":"Introduction to understanding and new approaches to create synergy between catalysis and plasma themed collection","authors":"Annemie Bogaerts, Gabriele Centi and Jason C. Hicks","doi":"10.1039/D5EY90015H","DOIUrl":"https://doi.org/10.1039/D5EY90015H","url":null,"abstract":"<p >A graphical abstract is available for this content</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 592-594"},"PeriodicalIF":0.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey90015h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536766","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":"DBD plasma-thermal tandem reactors for converting biogas to carbon nanofibers†","authors":"Kevin K. Turaczy, Zhenhua Xie and Jingguang G. Chen","doi":"10.1039/D5EY00009B","DOIUrl":"https://doi.org/10.1039/D5EY00009B","url":null,"abstract":"<p >Sequestering greenhouse gases (CO<small>₂</small> and CH<small>₄</small>) in biogas into carbon nanofibers (CNF) offers a promising route to mitigate carbon emissions and create value-added solid carbon materials. Coupling non-thermal plasma with a thermocatalytic reactor in a tandem setup is a promising approach for tandem reactions of dry reforming of methane to synthesis gas and its subsequent conversion to CNF. Various parameters were studied to determine their effects on CNF growth. Decreasing the total flow rate resulted in an increase in CNF growth. Increasing the plasma power input or the plasma zone length also enhanced the production of CNF. These results illustrate that plasma-thermal tandem reactors can be used to synthesize CNF from biogas with tunable parameters that may be further optimized in future studies.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 756-762"},"PeriodicalIF":0.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00009b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536801","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":"Catalysts for selective CO2/CO electroreduction to C3+ compounds","authors":"Ngoc Huan Tran, Moritz W. Schreiber and Marc Fontecave","doi":"10.1039/D5EY00047E","DOIUrl":"https://doi.org/10.1039/D5EY00047E","url":null,"abstract":"<p >Electroreduction of carbon dioxide and carbon monoxide to organic compounds is considered a promising way for (i) exploring a source of carbon alternative to fossil carbon; (ii) storing electrical energy as stable chemical energy; and (iii) producing useful e-chemicals and e-fuels for the chemical industry. While it is generally considered that only Cu-based catalysts facilitate the formation of multicarbon compounds, which are mainly limited to ethylene and ethanol, recent studies have challenged this assumption. In this review, we provide exhaustive, structural and mechanistic analyses of the solid materials that have been reported as catalysts for electroreduction of CO<small>₂</small> and CO to more complex molecules. This review elucidates that besides copper, metals such as nickel, iron and molybdenum have the potential to favor C–C coupling reactions to form important molecules in the chemical industry, such as propane, propanol, and butanol, along with offering substantial faradaic efficiencies. Thus, this review offers fresh perspectives on CO<small>₂</small>R and COR.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 644-668"},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00047e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536769","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":"Direct electrolysis of liquid anhydrous ammonia for continuous production of high-purity, pressurized hydrogen at ambient temperature†","authors":"Seungmok Han, Junsoo Ha, Jae Seung Lee, Hyukjoo Lee, Chang Hyun Lee, Kangwoo Cho and Chang Won Yoon","doi":"10.1039/D5EY00140D","DOIUrl":"https://doi.org/10.1039/D5EY00140D","url":null,"abstract":"<p >The direct electrolysis of liquid anhydrous ammonia (NH<small>₃</small>(l), &gt;99.99% of NH<small>₃</small>, free of water and solvent) is demonstrated using a 25 cm<small>²</small> zero-gap electrolyzer, consisting of a Ru/C anode and a Pt/C cathode, with the two electrodes spatially separated by a cation exchange membrane. This system, supplied by NH<small>₃</small>(l) and NH<small>₄</small>Br as the supporting electrolyte, continuously produces high-purity and pressurized hydrogen (H<small>₂</small>, &gt;99.99%, &gt;5.5 bar) at a temperature of 10 °C and a pressure of 6.2 bar, without requiring H<small>₂</small>/N<small>₂</small> separation and compression processes. The direct NH<small>₃</small>(l) electrolyzer exhibits a cell potential of 1.1 V at 0.1 A cm<small>⁻²</small>, presenting a faradaic efficiency of &gt;99.3% for H<small>₂</small> production. The developed system achieves a H<small>₂</small> production rate of &gt;18.8 mol-H<small>₂</small> g<small>_cat</small><small>⁻¹</small> h<small>⁻¹</small> at 0.5 A cm<small>⁻²</small>, which is 4.7-fold higher than the highest H<small>₂</small> production rate reported to date for NH<small>₃</small>(g) thermolysis at temperatures of over 500 °C.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 694-700"},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00140d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536770","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":"High purity CH4 production from CO2via cascade electro-thermocatalysis using metal nanoclusters with high CO2 binding affinity†","authors":"Sang Myeong Han, Minyoung Park, Seonju Kim, Cheonwoo Jeong, Joonwoo Kim and Dongil Lee","doi":"10.1039/D5EY00094G","DOIUrl":"https://doi.org/10.1039/D5EY00094G","url":null,"abstract":"<p >Electrochemical CO<small>₂</small> reduction reaction (CO<small>₂</small>RR) has emerged as a promising strategy to convert CO<small>₂</small> into value-added chemicals and fuels. While methane is especially desirable owing to its extensive use as a fuel, existing infrastructure, and large global market, the direct electroreduction of CO<small>₂</small> to CH<small>₄</small> is hindered by challenges such as low product purity and high overpotentials. In this study, an efficient cascade electrolysis and thermocatalysis system for the high-purity production of CH<small>₄</small> from CO<small>₂</small> has been demonstrated. Electrochemical syngas production was carried out using CO<small>₂</small>RR-active electrocatalysts, including Au<small>₂₅</small> and Ag<small>₁₄</small> nanoclusters (NCs). While both NCs exhibited high CO<small>₂</small>-to-CO activity in alkaline media, Ag<small>₁₄</small> NCs enabled syngas production with a varying ratio (H<small>₂</small>/CO) by adjusting the CO<small>₂</small> flow rate, achieving near-theoretical single-pass conversion efficiency (SPCE) of over 45% (theoretical limit = 50%). Electrokinetic analysis revealed that the strong CO<small>₂</small> binding affinity and exceptional CO selectivity of Ag<small>₁₄</small> NCs contribute to superior syngas tunability and carbon conversion efficiency. Electrochemically generated syngas (H<small>₂</small>/CO = 3) at 800 mA cm<small>⁻²</small> was directly fed into a thermocatalysis reactor, producing CH<small>₄</small> with a purity exceeding 85%.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 723-732"},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00094g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536773","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":"Leveraging oxygen mobility with zirconia in low-temperature plasma for enhanced methane reforming to syngas†","authors":"FNU Gorky, Levi Pile, Grace Jones, Apolo Nambo, Mourad Benamara and Maria L. Carreon","doi":"10.1039/D5EY00069F","DOIUrl":"https://doi.org/10.1039/D5EY00069F","url":null,"abstract":"<p >Despite extensive efforts to optimize the single-step production of syngas, hydrocarbons, and oxygenates <em>via</em> plasma catalysis, several challenges remain unresolved. In particular, understanding the various reaction pathways is hindered by the complexity of the reactions and the diverse range of chemical products formed. In this study, our main objective is to evaluate and compare the influence of zirconia on reaction pathways, methane (CH<small>₄</small>) and carbon dioxide (CO<small>₂</small>) conversions (%), and syngas selectivity (%) relative to the plasma-only route. Experiments were conducted at a low radio-frequency plasma power of 50 Watts without external heating. The results demonstrated significantly enhanced conversions of carbon dioxide and methane when the reaction chamber was packed with zirconia (ZrO<small>₂</small>). Methane conversion was observed to be the highest at a rich CO<small>₂</small> feed [CO<small>₂</small> : CH<small>₄</small> (2 : 1)], while plasma only revealed conversion of 20.1%. After packing with zirconia, the conversion increased to 71.2% (3.5 times increment). On the other hand, carbon dioxide conversions were also observed to be the highest at a feed composition of CO<small>₂</small> : CH<small>₄</small> (2 : 1), with plasma only (13.6%) <em>vs.</em> with zirconia packing (60.9%) revealing a 4.4 times increase. Interestingly, at the rich CO<small>₂</small> feed composition, the syngas product (CO + H<small>₂</small>) selectivity increased after packing ZrO<small>₂</small> by 1.1 times for CO and 1.2 times for H<small>₂</small>. Optical emission spectroscopy (OES) analysis revealed important insights into the gas phase, with signatures of atomic oxygen (O) being the dominant plasma species in the gas phase under plasma-only conditions, while their intensities plummeted when zirconia was introduced, indicating active oxygen diffusion onto the surface of zirconia. Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) confirmed important surface alterations after plasma exposure and most importantly provided experimental proof on zirconia's oxygen mobility. These findings provided an integral perspective into the design of catalytic materials that enhance oxygen mobility, enabling low-temperature and energy-efficient dry methane reforming for a sustainable future.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 743-755"},"PeriodicalIF":0.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00069f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536800","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":"Effective production of liquid/wax fuels from polyethylene plastics using Ru/Al2O3 catalysts†","authors":"Jueun Kim, Donghyeon Kim, Byung Gwan Park, Daewon Oh, Shinjae Lee, Jihun Kim, Eonu Nam and Kwangjin An","doi":"10.1039/D5EY00070J","DOIUrl":"https://doi.org/10.1039/D5EY00070J","url":null,"abstract":"<p >Hydrogenolysis provides a promising pathway for converting polyolefin plastics into valuable liquid and wax fuels. This process involves dehydrogenation, C–C bond cleavage, and hydrogenation at the active metal sites of the catalyst. Controlling the nature of these metal sites is crucial to optimize overall reaction activity. In this study, Ru catalysts supported on nanosheet-assembled Al<small>₂</small>O<small>₃</small> (NA-Al<small>₂</small>O<small>₃</small>) were used for the hydrogenolysis of polyethylene (PE). Unlike commercial Al<small>₂</small>O<small>₃</small>, NA-Al<small>₂</small>O<small>₃</small> promotes Ru–Al bond formation, leading to stronger metal–support interactions. Under identical Ru loadings, these enhanced interactions resulted in higher Ru dispersion and smaller Ru species on the NA-Al<small>₂</small>O<small>₃</small> surface. To investigate the effect of Ru loading, a series of catalysts (<em>x</em>Ru/NA-Al<small>₂</small>O<small>₃</small>, <em>x</em> = 0.5, 1, 5, and 8 wt% Ru) was synthesized, revealing that Ru particle size and electronic properties varied with Ru loading. Among them, the 1Ru/NA-Al<small>₂</small>O<small>₃</small> catalyst, featuring optimally sized Ru species (∼0.8 nm) and a tailored electronic structure, demonstrated the highest efficiency in PE hydrogenolysis by effectively suppressing successive C–C bond cleavage. This catalyst achieved an outstanding PE conversion rate of 1.15 × 10<small>³</small> g<small>_{converted PE}</small> g<small>_Ru</small><small>⁻¹</small> h<small>⁻¹</small> and a liquid/wax production rate of 9.23 x 10<small>²</small> g<small>_liquid/wax</small> g<small>_Ru</small><small>⁻¹</small> h<small>⁻¹</small>, highlighting its superior performance in catalytic PE hydrogenolysis.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 822-831"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00070j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536807","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":"Nb2C Mxene as a bifunctional acid–base and oxidation/hydrogenation catalyst†","authors":"Octavian Pavel, Alina Tirsoaga, Bogdan Cojocaru, Dana Popescu, Ruben Ramírez-Grau, Pablo González-Durán, Pablo García-Aznar, Liang Tian, German Sastre, Ana Primo, Vasile Parvulescu and Hermenegildo Garcia","doi":"10.1039/D5EY00004A","DOIUrl":"https://doi.org/10.1039/D5EY00004A","url":null,"abstract":"<p >Nb<small>₂</small>C MXene, obtained from Nb<small>₂</small>AlC by Al<small>³⁺</small> etching and exfoliation, was characterized using XRD, HRTEM and AFM, with the data confirming the crystallinity of the sample and the 2D morphology of the sheets with an average layer thickness of 1.5 nm. Surface analysis using XPS revealed the presence of structural defects, and NH<small>₃</small>- and CO<small>₂</small>-TPD profiles confirmed the low density of acid and basic sites in the range of tens of μmol g<small>_catalyst</small><small>⁻¹</small> of weak and moderate strengths. The combination of acid and basic sites in close proximity on the solid surface was responsible for the remarkable catalytic activity of Nb<small>₂</small>C MXene in promoting aldolic condensation with high turnover frequencies of up to 855 h<small>⁻¹</small>, which was comparable to the values of benchmark catalysts, such as MgO or HZSM-5. Nb<small>₂</small>C MXene also catalyzed the aerobic oxidative aniline coupling to azo- and azoxy-benzene and hydrogenation of azoxybenzene to azobenzene.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 856-869"},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00004a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536813","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":"Visible-light photocatalytic CO2 hydrogenation using surface-alloyed plasmonic AgPt nanoprisms†","authors":"Garv Bhardwaj, Fergus McLaren, Kishan S. Menghrajani, Sanje Mahasivam, Stefan A. Maier, Murali Sastry and Akshat Tanksale","doi":"10.1039/D5EY00046G","DOIUrl":"https://doi.org/10.1039/D5EY00046G","url":null,"abstract":"<p >Development of suitable catalysts for light-driven CO<small>₂</small> hydrogenation is an alluring goal in catalysis. In this study, plasmonic Ag nanoprisms were combined with Pt to make surface-alloyed nanoparticles for aqueous-phase CO<small>₂</small> hydrogenation. The Pt loading favoured the product selectivity towards multi-electron C<small>₁</small> products and promoted acetic acid production <em>via</em> C–C coupling. Increasing the reaction pressure further improved acetic acid production where the highest yield of 0.491 mmol g<small>_cat</small><small>⁻¹</small> was achieved at 20 bar. Within the visible-light region, the in-plane dipole resonance peak of Ag<small>₉₁</small>Pt<small>₉</small> at 600 nm contributed the highest apparent quantum yield of 26.7%. These investigations demonstrated the significance of designer plasmonic catalysts and highlighted their photocatalytic enhancement towards CO<small>₂</small> conversion.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 811-821"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00046g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536806","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":"Elevated temperature and pressure driven ampere-level CO2 electroreduction to CO in a membrane electrode assembly electrolyzer†","authors":"Yang Li, Huiyue Liu, Jithu Raj, Mohammad Pishnamazi and Jingjie Wu","doi":"10.1039/D5EY00034C","DOIUrl":"https://doi.org/10.1039/D5EY00034C","url":null,"abstract":"<p >Achieving high selectivity for carbon monoxide (CO) in the electrochemical reduction of carbon dioxide (CO<small>₂</small>) at industrially relevant current densities, particularly using dilute CO<small>₂</small> feedstocks, remains a significant challenge. Herein, we demonstrate that combining elevated temperature and CO<small>₂</small> pressure substantially enhances CO production in a membrane electrode assembly (MEA) electrolyzer using commercially available silver nanoparticles. Elevated CO<small>₂</small> pressures increase CO<small>₂</small> concentration and reduce the diffusion layer, counteracting the reduced CO<small>₂</small> solubility in water and enhanced wetting of catalyst layer caused by high temperature. The synergy of high pressure and temperature ensures high CO<small>₂</small> flux to the catalyst surface while leveraging elevated temperatures to accelerate reaction kinetics. Therefore, the pressurized and heated CO<small>₂</small> electrolyzer achieves an FE<small>_CO</small> of 92% at a high current density of 2 A cm<small>⁻²</small> and a low cell voltage of 3.8 V under 10 bar and 80 °C when using 0.1 M KHCO<small>₃</small> as the anolyte. Even when using pure water as the anolyte, the system maintains a FE<small>_CO</small> value of 90% at 300 mA cm<small>⁻²</small> and a cell voltage of 3.6 V. Furthermore, the system demonstrates exceptional performance with dilute 10 vol% CO<small>₂</small> feedstocks, achieving a FE<small>_CO</small> of 96% at 100 mA cm<small>⁻²</small> and 2.4 V. These findings underscore the potential of combined temperature and pressure optimization to overcome mass transport limitations and enhance reaction kinetics, offering a viable pathway for scaling up CO<small>₂</small> electrolyzers for industrial applications.</p>","PeriodicalId":72877,"journal":{"name":"EES catalysis","volume":" 4","pages":" 843-855"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ey/d5ey00034c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536812","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}