Catalysis Communications最新文献_第5页

Enhancing SO2 tolerance of Pt/CeO2 catalyst for CO oxidation via carbon-coated layers 通过碳涂层提高 Pt/CeO2 催化剂在 CO 氧化过程中对二氧化硫的耐受性

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106911

Yuwei Zhou , Xiao Yang , Xuan Tang , Yang Lou

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Effect of alkali metal cation doping in graphitic carbon nitride towards photocatalytic generation of hydrogen peroxide under direct sunlight 氮化石墨碳中掺杂碱金属阳离子对阳光直射下光催化生成过氧化氢的影响

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106909

P. Haripriya , T. Anjana , K. Sreelakshmi , Nikhil T. Madhu , M. Anjana , P.V. Suneesh , Darbha V. Ravi Kumar

{"title":"Effect of alkali metal cation doping in graphitic carbon nitride towards photocatalytic generation of hydrogen peroxide under direct sunlight","authors":"P. Haripriya , T. Anjana , K. Sreelakshmi , Nikhil T. Madhu , M. Anjana , P.V. Suneesh , Darbha V. Ravi Kumar","doi":"10.1016/j.catcom.2024.106909","DOIUrl":"10.1016/j.catcom.2024.106909","url":null,"abstract":"<div>H2O2, a powerful oxidant with a vast number of industrial applications, is being synthesized by the energy intensive anthraquinone process. Recently, H2O2 has been synthesized using H2O and O2 by photocatalysis. Graphitic carbon nitride (g-C3N4) is a popular low-cost photocatalyst that is known to produce H2O2. However, the properties g-C3N4 needs to be tailored to improve the yield of H2O2. We discuss such a modification of g-C3N4 by alkali metal cation doping. Among the Li+, Na+ and K+ ions, doping of 10 wt% of K+ in g-C3N4 increase the yield of H2O2 (200 μmol g−1 h−1) by 2.5 times as compared un-doped g-C3N4 under natural sunlight.</div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106909"},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1566736724000694/pdfft?md5=eb45e617f6c13b5e8a34ae62393d9546&pid=1-s2.0-S1566736724000694-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140182186","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}

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Preparation of 4,4-bis(5-methylthiophen-2-yl)pentanoic acid from biomass-based functional molecules using solid acid catalysts 利用固体酸催化剂从生物质功能分子制备 4,4-双(5-甲基噻吩-2-基)戊酸

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106906

Sreedhar Gundekari , Rajathsing Kalusulingam , Mohan Varkolu , Kannan Srinivasan

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Enhanced low-temperature selective catalytic reduction (SCR) activity and H2O and SO2 resistance of flower-like SmMnOx and SmMnOx-rGO catalysts 增强花状 SmMnOx 和 SmMnOx-rGO 催化剂的低温选择性催化还原 (SCR) 活性以及耐 H2O 和 SO2 性能

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106908

Yungang He , Sitong Meng , Haofeng Zhu , Kaijiao Duan , Yumei Duan , Jing Zhang , Lijuan Jia , Mingwu Xiang , Vishesh Manjunath , Ezhumalai David , Sivasankar Koppala

{"title":"Enhanced low-temperature selective catalytic reduction (SCR) activity and H2O and SO2 resistance of flower-like SmMnOx and SmMnOx-rGO catalysts","authors":"Yungang He , Sitong Meng , Haofeng Zhu , Kaijiao Duan , Yumei Duan , Jing Zhang , Lijuan Jia , Mingwu Xiang , Vishesh Manjunath , Ezhumalai David , Sivasankar Koppala","doi":"10.1016/j.catcom.2024.106908","DOIUrl":"10.1016/j.catcom.2024.106908","url":null,"abstract":"<div>Reed flower-like SmMnOx and cauliflower-like SmMnOx-rGO catalysts were successfully synthesized by a coprecipitation-coupled solvothermal method for selective catalytic reduction (SCR) of NOx. The NOx conversion of the two catalysts is more than 90% in the temperature range of 75–200 °C, and the N2 selectivity of SmMnOx-rGO is above 90%. Moreover, both of them exhibit more than 62% of resistance to H2O and SO2 at a very low temperature of 100 °C, much superior than the fluffy spherical SmMnOx prepared by coprecipitation method. The strong synergy between Mn and Sm endowed by the flower-like structure contributes to a low degree of crystallization, a high ratio of (Mn3++Mn4+)/Mn, more chemisorbed oxygen species, strong redox ability, and more Lewis acid sites, hence effectively enhancing low-temperature SCR activity and resistance to H2O and SO2. In addition, the decreased ratio of Mn4+/Mn after rGO doping hinders the side reaction of NH3 oxidation, thus enhancing the N2 selectivity of rGO-doped SmMnOx catalyst.</div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106908"},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1566736724000682/pdfft?md5=0b10f182f4c6d03e941c5c0d3d2769d6&pid=1-s2.0-S1566736724000682-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140182298","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}

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Highly efficient synthesis of high-density biofuels from biomass-derived α-pinene catalyzed by mesoporous H-ZSM-5 介孔 H-ZSM-5 催化生物质源 α-蒎烯高效合成高密度生物燃料

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106881

Chenan Yang, Yi Liu, Ying Hu, Peng Wang, Yuling Yang, Shangxing Chen, Zongde Wang, Xiang Li

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Effects of alloying palladium with gold in furfural hydrogenation:An in situ ATR-IR spectroscopy and density functional theory study 糠醛氢化过程中金与钯合金化的影响：原位 ATR-IR 光谱和密度泛函理论研究

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106894

Sebastiano Campisi , Silvio Bellomi , Lidia E. Chinchilla , Marta Stucchi , Laura Prati , Alberto Roldan , Davide Ferri , Alberto Villa

引用次数: 0

Catalytic hydrogenolysis of lignin over Ni/CeO2-Al2O3 catalysts with formic acid as hydrogen source 以甲酸为氢源，在 Ni/CeO2-Al2O3 催化剂上催化木质素氢解

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106868

Jiaxin Liu , Pengcheng Xiu , Yafei Zhu , Kanghong Wang , Shanshan Tong , Yunpeng Ma , Haoquan Guo , Xiaoli Gu

引用次数: 0

Adopting chitosan supported Ag and Ag2O nano-clusters for catalytic hydrogenation of CO2 to formic acid: A quantum semi-empirical calculation 采用壳聚糖支撑的 Ag 和 Ag2O 纳米簇催化 CO2 加氢制甲酸：量子半经验计算

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106872

Ali H. Bashal

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Emerging robust heterostructure of flower-like (Calendula) MoS2-warped rGO by polyaniline nanohybrid for antimicrobial and antipollution performances 聚苯胺纳米杂化的花状（金盏花）MoS2-warped rGO 异质结构在抗菌和抗污染方面的新用途

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106867

Jarvin Mariadhas , Yathavan Subramanian , Ganesh Lakshmanan , Fazil Hamsath , Jeyarajan Helen Ratna Monica , Minh Thang Le , Savairoyan Stephen Rajkumar Inbanathan , Abul K. Azad

{"title":"Emerging robust heterostructure of flower-like (Calendula) MoS2-warped rGO by polyaniline nanohybrid for antimicrobial and antipollution performances","authors":"Jarvin Mariadhas , Yathavan Subramanian , Ganesh Lakshmanan , Fazil Hamsath , Jeyarajan Helen Ratna Monica , Minh Thang Le , Savairoyan Stephen Rajkumar Inbanathan , Abul K. Azad","doi":"10.1016/j.catcom.2024.106867","DOIUrl":"10.1016/j.catcom.2024.106867","url":null,"abstract":"<div>Molybdenum disulfide /reduced Graphene Oxide /Polyaniline nanocomposites (NCs) was prepared via a two-step synthesis procedures involving hydrothermal and in-situ chemical polymerization techniques. The morphological analysis revealed a well-interconnected structure. X-ray diffraction and Raman spectroscopy revealed the effective formation of the nanocomposites, while Ultraviolet-diffuse reflectance spectroscopy demonstrated enhanced visible light absorption. The degradation rates were up to 96.59% for Methylene Blue, 70.24% for Rhodamine Blue, and 46.03% for Methyl Orange under sunlight light irradiation. The antimicrobial activity of the NCs against various strains, including Escherichia coli, Candida Albicans, and Staphylococcus aureus showed that the prepared nanocomposite possesses better effectiveness against Candida Albicans.</div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106867"},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S156673672400027X/pdfft?md5=1ad4393c378a0c53d35d1f221a318ae9&pid=1-s2.0-S156673672400027X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139829846","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}

引用次数: 0

Photocatalytic degradation of reactive dyes over NiAl layered double hydroxide 镍铝双层氢氧化物光催化降解活性染料

IF 3.7 3区化学

Catalysis Communications Pub Date : 2024-02-01 DOI: 10.1016/j.catcom.2024.106879

Mehak Bansal , Kamya Jasuja , Raj Kumar Das

{"title":"Photocatalytic degradation of reactive dyes over NiAl layered double hydroxide","authors":"Mehak Bansal , Kamya Jasuja , Raj Kumar Das","doi":"10.1016/j.catcom.2024.106879","DOIUrl":"10.1016/j.catcom.2024.106879","url":null,"abstract":"<div>Due to the uncontrolled discharge of textile effluents, the extent of reactive dyes in wastewater is rising. Due to their toxicity, efficient removal becomes quite essential. In this report, Ni<img>Al layered double hydroxide (LDH) has been prepared using the coprecipitation methodology for the photocatalytic degradation of reactive dyes. The as-prepared materials were characterized by different techniques, such as DRS, XRD, FESEM, HRTEM, and XPS etc. The XRD pattern of the LDH confirms the formation of the rhombohedral (R3m) phase. The FESEM analysis reveals the irregular hexagon-like shape of the prepared LDH. The Ni<img>Al LDH has 98(1) and 87(1)% photodegradation efficiencies towards the removal of reactive blue 19 and reactive Red 120, respectively. The control experiments in the presence of different scavengers confirm that hydroxyl radicals and superoxide anions participate in photocatalytic degradation. The HRMS studies confirm the formation of different smaller fragments, thereby providing a deeper insight into the photodegradation mechanism. Moreover, the demineralization efficiency (88.9%) is quite close to the degradation efficiency for reactive blue 19, signifying practically complete demineralization of the pollutants. The recyclability studies ascertain the high stability of the photocatalyst. Therefore, the as-prepared Ni<img>Al LDHs can be considered a promising photocatalyst for the removal of reactive dyes from wastewater.</div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106879"},"PeriodicalIF":3.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1566736724000396/pdfft?md5=506f048d4cd5045085080f8e8670321c&pid=1-s2.0-S1566736724000396-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139924528","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}

引用次数: 0