Topics in Catalysis最新文献

{"title":"Hydrophobic Modification of Small-Pore Pd-SSZ-13 Zeolites for Catalytic Methane Combustion","authors":"Xinyu Wang, Xin Xu, Wuwan Xiong, Daiqi Ye, Peirong Chen","doi":"10.1007/s11244-024-01923-x","DOIUrl":"https://doi.org/10.1007/s11244-024-01923-x","url":null,"abstract":"<p>Catalytic oxidation is an effective solution for the control of methane (CH₄) emission in exhausts from natural gas vehicles. Pd-based small-pore zeolites (such as Pd-SSZ-13) are considered to be the most active catalysts for CH₄ oxidation, but H₂O in the exhausts tends to induce deactivation of Pd catalysts. In this work, we tuned the hydrophobicity of Pd-SSZ-13 as a representative to improve its H₂O resistance in CH₄ oxidation. Pd-SSZ-13 catalysts with different Si/Al ratios were obtained by dealuminizing the pristine SSZ-13 zeolite with acid followed by Pd ion exchange, and a reduction of <i>T</i>_<i>50</i> (i.e. the temperature to reach 50% conversion of CH₄) by 20 ℃ was achieved in CH₄ oxidation in the presence of 10 vol.% H₂O. Detailed physicochemical characterizations showed that the fraction of highly dispersed PdO species (highly active in CH₄ oxidation) increased, whereas that of less inactive PdO_<i>x</i> clusters decreased, in the Pd-SSZ-13 after acid modification. In addition, the increase of zeolite hydrophobicity after acid modification alleviated the H₂O inhibition effect on the active PdO phase, leading to a less activity loss of Pd-SSZ-13 in CH₄ oxidation. The improved hydrophobicity also favored C₃H₈ combustion over Pd-SSZ-13. These results suggested that simple acid modification could tune effectively the Si/Al ratio and hydrophobicity of zeolite supports, and eventually the physicochemical properties and oxidation performance of the supported Pd catalysts.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"31 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanomodified Geopolymers with Copper Ferrites for Methylene Blue Degradation","authors":"Gabriel Bezerra Silva, Fabíola da Silveira Maranhão, Fernando Gomes de Souza, Daniele Silvéria Brandão, Thiago do Nascimento Peçanha, Ellen Brito Hsia, Antonieta Middea, Roberto Costa Lima","doi":"10.1007/s11244-024-01922-y","DOIUrl":"https://doi.org/10.1007/s11244-024-01922-y","url":null,"abstract":"<p>The photocatalytic properties of copper ferrites can be exploited in the degradation of organic contaminants in aqueous media, such as methylene blue. The interaction of ferrites with electromagnetic radiation results in the formation of chemical species capable of acting in the degradation of methylene blue molecules. The incorporation of these nanomaterials into geopolymeric matrices makes it possible to produce polymeric nanocomposites with improved properties. Geopolymers loaded with different percentages of copper ferrites were placed in contact with a solution of methylene blue, exposed to UV light and it was possible to observe photocatalytic activity in the degradation of this dye. Analysis in a UV–Vis spectrophotometer, at the maximum absorbance wavelength of the dye equivalent to 670 nm, showed that the geopolymer loaded with 2% copper ferrites was more effective in degrading methylene blue. These results display the potential of copper ferrite-loaded geopolymers as viable photocatalysts for organic pollutant remediation.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"05 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the Interaction Between Ru Nanoparticles and Nd2O3 to Enhance Hydrogen Formation from Ammonia Decomposition","authors":"","doi":"10.1007/s11244-024-01926-8","DOIUrl":"https://doi.org/10.1007/s11244-024-01926-8","url":null,"abstract":"<h3>Abstract</h3> <p>Development of highly active and stable catalysts for production of CO_x-free hydrogen from ammonia is crucial for the use of ammonia as hydrogen carrier. Herein, Ru nanoparticles (NPs) on Nd₂O₃ (Ru/Nd₂O₃) was prepared by different methods and investigated for NH₃ decomposition reaction. The dependence of the catalytic activity of Ru NPs on the Nd₂O₃ on the interaction between Ru NPs and Nd₂O₃ support was investigated in detail. The Ru/Nd₂O₃ obtained from precipitation method exhibits a high hydrogen formation rate of 1548 mmol g_cat⁻¹ h⁻¹ at 450 °C, which is high than that of the Ru/Nd₂O₃ analogue from milling method and comparable with many efficient oxides supported Ru catalysts reported previously. As revealed by various characterization techniques, the high activity of Ru/Nd₂O₃ obtained from precipitation method can be attributed to the enhanced interaction between Ru NPs and Nd₂O₃. The Ru NPs in Ru/Nd₂O₃ analogue with enhanced the metal-support interaction can modulate electronic structure and facilitate the activation and decomposition of NH₃. Therefore, Ru/Nd₂O₃ obtained from precipitation method exhibited significantly improved activity and intrinsic activity for NH₃ decomposition. This study provides promise for the design of efficient Ru/Nd₂O₃ catalyst for NH₃ decomposition reaction by tuning the metal–support interaction of catalysts.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"44 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodiesel Synthesis Using Magnetizable Geopolymer as Heterogeneous Catalysts Nanocomposite Assisted by Artificial Intelligence","authors":"Daniele Silvéria Brandão, Fernando Gomes de Souza, Fabíola da Silveira Maranhão, Kaushik Pal, Michelle Colão de Paula Pereira, Andreina Catarina Torres, Gabriel Bezerra Silva, Thiago do Nascimento Peçanha, Sophia Elizabeth Cesar e Silva, Jean Carlos Carelo, Antonieta Middea","doi":"10.1007/s11244-024-01929-5","DOIUrl":"https://doi.org/10.1007/s11244-024-01929-5","url":null,"abstract":"<p>Biodiesel stands out as a promising contender in the quest for renewable energy solutions, offering a greener alternative to traditional fossil fuels. Derived primarily from the transesterification of vegetable oils or animal fats, biodiesel offers an eco-friendly energy avenue with a minimized carbon footprint. Catalysts are central to the success of this process, which significantly enhance yield rates. Geopolymers, traditionally associated with construction applications due to their inorganic nature, have been derived from aluminosilicate sources activated using alkaline solutions. However, recent advancements spotlight geopolymers in a new light, emphasizing their prospective role as nanocatalytic agents for biodiesel synthesis. This paradigm shift suggests improved production efficiency and an innovative method of repurposing industrial waste. This study centers on the pioneering application of geopolymers, fortified with magnetite, as potent heterogeneous catalysts for biodiesel generation from soybean and safflower oils. By leveraging a meticulously crafted geopolymer matrix—consisting of metakaolin, sodium hydroxide, and magnetite—this research replaced traditional catalysts with this advanced nanostructured geopolymer variant in the biodiesel methylation process. The research delved deep to ascertain the prime synthesis conditions. Furthermore, utilizing cutting-edge machine learning methodologies provided an analytical lens to navigate the extensive experimental data, thereby fine-tuning the optimization trajectory. One of the salient takeaways from this research is the validation that geopolymer catalysts, rooted in kaolinite, can be ingeniously tailored to ensure elevated biodiesel yields across a spectrum of oil sources, underscoring their unparalleled efficiency and versatility in the biofuel domain.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"17 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Development of Catalysts for the Nitrate Reduction Reaction: Electrochemical Solution to Produce Ammonia","authors":"Kyung-Won Jeon, Siming Huo, Briana I. Espinosa, Xianqin Wang","doi":"10.1007/s11244-024-01933-9","DOIUrl":"https://doi.org/10.1007/s11244-024-01933-9","url":null,"abstract":"<p>Ammonia, essential for agriculture fertilizers and as an energy carrier, is traditionally produced by the energy-intensive Haber–Bosch process, which is a significant energy consumer and a notable contributor to CO₂ emissions. The electrochemical nitrate reduction reaction (NO₃RR) to produce ammonia presents a promising and environmentally friendly solution, allowing to reduce NO₃⁻ contamination in waste water resources. This review covers recent trends in noble and non-noble metal-based catalysts, single-atomic metal catalysts, and metal-free catalysts for NO₃RR. Specifically, it was found that transition metals were effective in enhancing electron transfer in the NO₃RR due to their <i>d</i>-orbital energy levels. Furthermore, alloys or single atomic catalysts with transition metals have been studied to improve NO₃RR performance by adjusting the crystal plane or generating oxygen vacancies. Metal-free catalysts have been investigated and have exhibited great potentials in the NO₃RR. It was revealed that tuning the electronic properties can effectively suppress the side reactions and increase the ammonia yield and Faradaic efficiency. This review aims to provide guidance for catalyst design and performance improvement in future NO₃RR research.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"95 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of Cobalt Hydroxide Nano-Sheets as Electrocatalyst Material for Measuring of Glucose in Blood Samples from Athletes","authors":"","doi":"10.1007/s11244-024-01928-6","DOIUrl":"https://doi.org/10.1007/s11244-024-01928-6","url":null,"abstract":"<h3>Abstract</h3> <p>In this work, a convenient, low cost and fast detection of glucose (GO) in human blood has been investigated. For this purpose, a non-enzymatic sensor based on the hydrothermally prepared cobalt hydroxide nano-catalyst was fabricated and used for analysis of GO level in biological fluids. The electrochemical ability of the modified glassy carbon electrode (GCE) for GO measuring was studied by cyclic voltammetry and chronoamperometry assays. The chronoamperometric data indicate that the proposed sensing platform is capable of measuring changes in GO levels within a linear range of 1.5–460 µM and low detection limit of 0.8 µM. The cobalt hydroxide modified GCE depicts a significant resistant versus common interfering species such as fructose, cholesterol, ascorbic acid, <span>l</span>-cysteine and uric acid. In addition, the suggested GO sensor was employed for determination of analyte concentration in blood samples from athletes. This novel platform is characterized by its low price, simple operation, high anti-interference property and high sensitivity. The experimental results proved that the cobalt hydroxide modified GCE is an effective strategy for non-enzymatic GO detection in clinical applications.</p> <span> <h3>Graphical Abstract</h3> <p> <span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/11244_2024_1928_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"58 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Characterization of NiMoS/TiMg and NiWS/TiMg Nanocatalysts and Their Application in the Hydrodesulfurization of Dibenzothiophene","authors":"P. Peña-Obeso, M. E. Cervantes-Gaxiola, J. L. Rico, J. N. Díaz de León, S. Guevara-Martinez, J. A. Lumbreras-Pacheco, R. Huirache-Acuña","doi":"10.1007/s11244-024-01916-w","DOIUrl":"https://doi.org/10.1007/s11244-024-01916-w","url":null,"abstract":"<p>NiMoS/TiMg and NiWS/TiMg nanocatalysts were synthesized, characterized by various techniques and tested in the hydrodesulphurization (HDS) of dibenzothiophene (DBT). TiMg mixed oxides containing 5, 10 or 15 wt% of MgO were prepared by sol–gel and then used as catalyst supports. A constant atomic ratio of Ni/(Ni + M) = 0.5 was kept for all the catalysts (M = Mo or W). The catalysts were first prepared by sequential-wet impregnation. Then, after an ex-situ sulfidation process, they were characterized by high resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and physisorption of N₂ following the BET method. The presence of MgO in the NiMoS/TiMg and NiWS/TiMg catalysts resulted in an enhancement in the HDS activity of DBT. In addition, their HDS activities were higher than those observed in the NiMoS/Ti and NiWS/Ti catalysts. Furthermore, higher HDS activity was found for the NiMoS/TiMg compared with their NiWS/TiMg catalysts counterpart.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"74 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalysts for Clean Energy: A Review on Current Progress for the Catalyzed Recycling of CO2 into Dimethyl Ether","authors":"","doi":"10.1007/s11244-024-01913-z","DOIUrl":"https://doi.org/10.1007/s11244-024-01913-z","url":null,"abstract":"<h3>Abstract</h3> <p>Dimethyl ether (DME), one of the proposed targets for CO₂ recycling, is a very attractive renewable energy source due to its non-toxic nature, low environmental impact, and hydrogen (H₂)-carrying abilities. The thermal catalyzed reaction of CO₂ to DME requires two steps with different catalysts, and the combination and optimization of these catalysts are of great importance for achieving viable DME yield that would make future industrial implementation possible. The thermodynamics and reaction mechanisms of the CO₂ conversion to DME were discussed. The metallic and acidic catalyst functions utilized for this reaction are analyzed in this review, and the different methods of combination are presented with a focus on hybrid catalysts to achieve successful and efficient catalyzed reactions with optimized DME yield. Additionally, an outlook for future directions in catalyst development and mechanistic understanding in this largely overlooked area are provided.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"14 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous Nutrient Removal from Urban Runoff Using Bi-layer Bioretention Cells with Novel Media Additives","authors":"Sanjena Narayanasamydamodaran, Jian’e Zuo, Nawnit Kumar","doi":"10.1007/s11244-023-01894-5","DOIUrl":"https://doi.org/10.1007/s11244-023-01894-5","url":null,"abstract":"<p>Nitrogen and phosphorous compounds are significant pollutants in urban stormwater runoff. In this study, three lab-scale bioretention cells, namely a control reactor CM, and reactors M1 and M2 containing Scrap Iron Filings (SIF) with granulated brick (M1) and pumice pellets (M2), respectively, were used to evaluate the simultaneous removal of nitrate, nitrite, ammonia, total nitrogen, phosphorous, and COD using simulated runoff. Under unsaturated conditions, M1 with the ZVI-brick combination removed 91.37% TP, while M2 with the ZVI-pumice combination removed 89.76% TP. Under saturated conditions, M2 removed 72.02% TN, and M1 removed 66.1% TN. It was found that the presence of saturation zones benefitted TN removal which can be attributed to the creation of anoxic conditions within saturation zones, which favoured denitrification, as well as the prolongation of influent retention and reaction time, while it hindered TP removal. TP removal percentages for CM, M1, and M2 declined from 86.77%, 91.37%, and 89.76% in unsaturated conditions to 63.99%, 83.67%, and 71.74% in saturated conditions due to the propensity of soil-bound P to leach in anoxic environments. The media amendments were further characterized using Scanning Electron Microscopy (SEM) and X Ray Diffraction analysis (XRD), as well as adsorption and leaching tests. Significantly, the highest pollutant leaching was observed in the assessed conditions for CM, underscoring the usefulness of including media like ZVI, brick powder, and pumice pellets. This incorporation not only heightened the effectiveness of pollutant removal but also fortified their retention in potential future stormwater events. In consideration of this, M1 emerged as the preferred design option, as its non-leaching characteristics were verified through flushing with distilled water after post-stormwater influent loading cycles when compared to traditional designs.</p>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of Extremophiles in Biodegradation of Emerging Pollutants","authors":"Xing Kai Chia,&nbsp;Tony Hadibarata,&nbsp;Muhammad Noor Hazwan Jusoh,&nbsp;Lies Indah Sutiknowati,&nbsp;Inn Shi Tan,&nbsp;Henry Chee Yew Foo","doi":"10.1007/s11244-024-01919-7","DOIUrl":"10.1007/s11244-024-01919-7","url":null,"abstract":"<div><p>Emerging pollutants, also referred to as emerging contaminants, are substances that have recently been recognized or are gaining attention due to their potential adverse impacts on the environment, human health, or ecosystems. These pollutants present a significant threat to both environmental and human well-being and are challenging to eliminate using conventional remediation methods. Extremophiles, organisms adapted to extreme environmental conditions like high or low temperatures, high pressure, and elevated salt concentrations, play a crucial role in this context. They produce a diverse array of enzymes capable of breaking down complex organic compounds, some of which remain stable and functional even in harsh environmental conditions, making extremophiles well-suited for use in bioremediation applications. Numerous studies have demonstrated the capability of extremophiles to degrade various pollutants, including toxic solvents, heavy metals, and industrial chemicals. Halophilic archaea, a type of extremophile, have particularly shown promise in degrading emerging contaminants in salt marsh sediments. Despite their potential, there are challenges associated with using extremophiles in bioremediation, such as the limited availability of extremophilic microorganisms capable of degrading specific pollutants and a reduction in enzyme stability when operating outside their optimum range. Nevertheless, ongoing research in this field is anticipated to result in the development of new and innovative bioremediation strategies for effectively removing emerging pollutants from the environment.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"68 9-10","pages":"965 - 982"},"PeriodicalIF":2.8,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-024-01919-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140005995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}