Kinetics and Catalysis最新文献_第2页

Photocatalytic Properties of a Functional Material Based on Modified Boron Nitride and a Molybdenum Cluster Complex 基于改性氮化硼和钼簇复合物的功能材料的光催化特性

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-11-04 DOI: 10.1134/S002315842460158X

M. N. Ivanova, V. A. Bardin, Yu. A. Vorotnikov, N. V. Kuratieva, M. A. Shestopalov

引用次数: 0

Synergistic Effect of Binary Compositions of Pentadigalloyl Glucose with Plant Phenols in the Reaction with Hydrazyl Radical 五二甲酰基葡萄糖与植物酚的二元组合在与肼基自由基反应中的协同效应

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-11-04 DOI: 10.1134/S0023158424601839

N. I. Belaya, A. V. Belyi, O. M. Zarechnaya, N. V. Mikhaylova

{"title":"Synergistic Effect of Binary Compositions of Pentadigalloyl Glucose with Plant Phenols in the Reaction with Hydrazyl Radical","authors":"N. I. Belaya, A. V. Belyi, O. M. Zarechnaya, N. V. Mikhaylova","doi":"10.1134/S0023158424601839","DOIUrl":"10.1134/S0023158424601839","url":null,"abstract":"It has been established that the maximum synergistic effect (more than 100%) is characteristic of the binary mixtures of pentadigalloyl glucose mixed with protocatechuic and vanillic acids in a ratio of 90 : 10 vol % in the reaction with the 2,2'-diphenyl-1-picrylhydrazyl radical in benzene. With an increase in the polarity of the solvent (dimethyl sulfoxide), an increase in the maximum synergistic effect by 15–20% on the average is observed. Using the methods of quantum chemical calculations and difference UV spectroscopy, it is shown that the resulting effect of the compositions of pentadigalloyl glucose with monomeric phenols depends on the following two mechanisms of synergistic action: the first mechanism is related to the formation of the intermolecular H-complex between reagents, which exhibits higher antiradical activity than that of the initial compounds; the second one is associated with the reduction of oxidized forms of the weaker antioxidant (monomeric phenol) by the stronger antioxidant (pentadigalloyl glucose). The mixture of pentadigalloyl glucose with methoxylated forms of plant phenols is a promising synergistic composition with high antiradical activity.","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 5","pages":"440 - 450"},"PeriodicalIF":1.3,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Fast Hydrolysis Precipitation Synthesis of Copper Doped BiOCl Nanosheets for Enhanced Nitrogen Fixation Under Visible Light 快速水解沉淀合成掺铜 BiOCl 纳米片，增强可见光下的固氮作用

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-28 DOI: 10.1134/S0023158424601177

Beijia Yuan, Liang Bao, Yong-jun Yuan

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Crosslinked Cation Exchange Resin with -SO3H Groups as an Efficient Solid Catalyst for the Ketalization of Ethyl Acetoacetate with Glycols 带有 -SO3H 基团的交联阳离子交换树脂作为乙酰乙酸乙酯与乙二醇缩酮化反应的高效固体催化剂

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-28 DOI: 10.1134/S0023158423600852

Bo-Jiang Chen, Jian-Ping Wu, Rukhsana, Fei-Yong Xiang, Yong-Miao Shen, Xue-Zheng Liang

{"title":"Crosslinked Cation Exchange Resin with -SO3H Groups as an Efficient Solid Catalyst for the Ketalization of Ethyl Acetoacetate with Glycols","authors":"Bo-Jiang Chen, Jian-Ping Wu,  Rukhsana, Fei-Yong Xiang, Yong-Miao Shen, Xue-Zheng Liang","doi":"10.1134/S0023158423600852","DOIUrl":"10.1134/S0023158423600852","url":null,"abstract":"A highly efficient protocol was developed for the synthesis of fructone spice from the ketalization of ethyl acetoacetate with ethylene glycol utilizing the sulfonated polydivinylbenzene (PDVB-SO3H) solid acid catalyst. A comparative analysis revealed that PDVB-SO3H exhibited better catalytic activity and reusability than conventional H2SO4 and p-toluene sulfonic acid. The impact of reaction conditions, including temperature, reaction time, catalyst dosage, and molar ratio of reactants, was extensively investigated in order to optimize the reaction parameters. The results revealed the remarkable catalytic efficiency of PDVB-SO3H in synthesizing apple ester flavor, achieving a conversion rate exceeding 99% under reflux conditions with a ketone to alcohol ratio of 1.5. Furthermore, PDVB-SO3H solid acid demonstrated its versatility by enhancing the synthesis of a variety of fruit ketone flavors with high conversion rates. Notably, the catalyst displayed excellent recyclability, remaining active for up to six cycles without any noticeable decline in performance. Therefore, PDVB-SO3H solid acid exhibits immense potential for utilization in the chemical industry.","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 5","pages":"513 - 520"},"PeriodicalIF":1.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Recent Studies on Alkoxides Grafted Mesoporous Silica Materials as Catalysts in Meerwein–Ponndorf–Verley Reductions: A Review 将接枝介孔二氧化硅材料作为 Meerwein-Ponndorf-Verley 还原反应催化剂的最新研究：综述

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-28 DOI: 10.1134/S0023158424601931

Burcu Uysal Karataş, Birsen Sengul Oksal

{"title":"Recent Studies on Alkoxides Grafted Mesoporous Silica Materials as Catalysts in Meerwein–Ponndorf–Verley Reductions: A Review","authors":"Burcu Uysal Karataş,  Birsen Sengul Oksal","doi":"10.1134/S0023158424601931","DOIUrl":"10.1134/S0023158424601931","url":null,"abstract":"This review provides a comprehensive survey of the preparation and application of homogeneous and heterogeneous boron and indium alkoxide catalysts and typical Meerwein–Ponndorf–Verley (MPV) reduction process techniques that are usually employed in the production of alcohol. A significant number of preparation and application methods are now available for various heterogeneous catalysts synthesized with some mesoporous silica nanoparticles. In this review article, preparation, characterization, application and advantages of boron and indium alkoxides grafted metal-free mesoporous heterogeneous catalysts are discussed. Also, recent research on applying mesoporous MCM-41 and SBA-15 to heterogeneous catalysis in synthesizing heterogeneous MPV catalysts has been reviewed. The potential heterogeneous catalysts that could be derived from the grafting of alkoxides on mesoporous materials, methods of preparing solid boron and indium alkoxide catalysts, as well as reusability and leaching analysis are discussed in detail. We think that the development of new, environmentally friendly, efficient, and selective catalytic procedures for carbonyl reduction and alcohol formation, represents a fundamental research aim in synthetic chemistry. In this context, this review can make an important contribution to organic synthesis.","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 5","pages":"521 - 535"},"PeriodicalIF":1.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Research on the Element Doping Modification Strategy of Graphite Carbon Nitride: A Review 氮化石墨的元素掺杂改性策略研究：综述

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-28 DOI: 10.1134/S0023158424601591

Min Xiao, Jianghao Tian, Chunru Sun, Huixian Zhang

{"title":"Research on the Element Doping Modification Strategy of Graphite Carbon Nitride: A Review","authors":"Min Xiao, Jianghao Tian, Chunru Sun, Huixian Zhang","doi":"10.1134/S0023158424601591","DOIUrl":"10.1134/S0023158424601591","url":null,"abstract":"The polymer semiconductor material known as graphitic carbon nitride (g-C3N4) has been extensively utilized for the removal of pollutants in wastewater treatment due to its notable visible photocatalytic efficiency, cost-effectiveness, straightforward synthesis, and chemical robustness. Nonetheless, unmodified g-C3N4 still exhibits deficiencies including suboptimal visible light absorption, pronounced electron-hole recombination, and wide band gaps, resulting in constrained photocatalytic efficacy. Through extensive research efforts, diverse modification approaches have been devised to enhance its photocatalytic capabilities. This paper systematically introduces the development history, preparation methods, photocatalytic mechanisms, advantages, and disadvantages of novel g-C3N4 materials, the various modification strategies including morphology control, element doping, defect construction, semiconductor coupling, and hetero-structure construction. In this paper, the preparation process, characterization results, practical applications, and performance enhancement effects of various elementally doped g-C3N4 materials in pollutant removal are discussed in detail, indicating the advantages of multielement doping modification strategy have obvious advantages in improving the photocatalytic performance of g-C3N4, highlighting the future prospects of g-C3N4 materials.","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 5","pages":"481 - 512"},"PeriodicalIF":1.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Low-Temperature O3-Catalytic Oxidation of Methane on Cobalt-Containing Zeolite Catalysts 含钴沸石催化剂对甲烷的低温 O3 催化氧化作用

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-04 DOI: 10.1134/S0023158424601736

D. A. Bokarev, I. V. Paramoshin, S. A. Kanaev, G. N. Baeva, A. V. Rassolov, A. Yu. Stakheev

引用次数: 0

Mass Spectrometric Study of Cations in a Non-Sooting Ethylene Flame 非膨胀乙烯火焰中阳离子的质谱研究

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-04 DOI: 10.1134/S0023158424601670

A. V. Cherepanov, D. A. Knyazkov

{"title":"Mass Spectrometric Study of Cations in a Non-Sooting Ethylene Flame","authors":"A. V. Cherepanov, D. A. Knyazkov","doi":"10.1134/S0023158424601670","DOIUrl":"10.1134/S0023158424601670","url":null,"abstract":"Understanding the kinetics and mechanism of formation of charged species in flames is of great importance for the development of ion-sensitive combustion control technologies. The development of predictive models involving ion-molecular reactions, however, is hampered by the lack of experimental data. The paper presents the results of our study of the spatial distribution of cations naturally occurring in a fuel-rich, non-sooting, laminar premixed ethylene/oxygen/argon flame using flame sampling molecular beam mass spectrometry. Particular attention is paid to the interpretation of the obtained mass spectra of cations, which are distorted by the influence of the sampling probe. The reliability of the proposed interpretation of the spectra is confirmed by consistency between the cationic and neutral flame structures. The study focused on cations with the general formula CxH(_{y}^{ + }) (53 < m/z < 165), actively formed in the reaction zone of the fuel-rich flame. Two main mechanisms of their formation are discussed: proton transfer from HCO+ and H3O+ (key cations of flame) to neutral intermediates whose mass is 1 amu smaller and gradual increase in the mass of ions in the reactions of lighter CxH(_{y}^{ + }) ions with neutral intermediates having high concentrations in the flame (acetylene, diacetylene, propylene, propyne, etc.).","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 4","pages":"309 - 319"},"PeriodicalIF":1.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Vinyl Iodide Homocoupling Catalyzed by Platinum(II) Iodo Complexes: A DFT Study 铂(II)碘配合物催化的碘化乙烯基同偶联反应：DFT 研究

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-04 DOI: 10.1134/S0023158424601700

T. V. Krasnyakova, D. V. Nikitenko, A. A. Gusev, V. G. But’ko, S. A. Mitchenko

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Kinetic Coupling of Steady-State Dry Reforming of Methane and Self-Oscillating Partial Oxidation of Methane over Nickel 甲烷在镍上的稳态干法重整与甲烷的自振荡部分氧化的动力学耦合

IF 1.3 4区化学

Kinetics and Catalysis Pub Date : 2024-09-04 DOI: 10.1134/S002315842460175X

V. Yu. Bychkov, Yu. P. Tulenin, Yu. A. Gordienko, O. N. Sil’chenkova, V. N. Korchak

{"title":"Kinetic Coupling of Steady-State Dry Reforming of Methane and Self-Oscillating Partial Oxidation of Methane over Nickel","authors":"V. Yu. Bychkov, Yu. P. Tulenin, Yu. A. Gordienko, O. N. Sil’chenkova, V. N. Korchak","doi":"10.1134/S002315842460175X","DOIUrl":"10.1134/S002315842460175X","url":null,"abstract":"The occurrence of dry reforming of methane (DRM) in a steady-state mode and partial oxidation of methane (POM) in a self-oscillating mode over a nickel foil sample and the simultaneous occurrence of these two reactions have been studied. It has been shown that during the cooccurrence of the DRM and POM reactions, a kinetic coupling of these reactions takes place; it is evident as a change in the self-oscillation period and a significant acceleration of the DRM reaction in certain phases of the self-oscillation cycle compared with the DRM rate over this Ni sample in a steady-state mode. The DRM acceleration effect is observed in a temperature range of 600–750°C. The maximum increase in the CO2 conversion value averaged over the oscillation period is a factor of 2.6 at a temperature of 700°C for a feed gas mixture composition of CH4 : CO2 = 1 : 1 + 3.5% O2. In addition, the effect of O2 concentration in a range of 0.5–3.5% on the increase in the DRM rate has been studied. An interpretation of the observed effects has been proposed.","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 4","pages":"405 - 412"},"PeriodicalIF":1.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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