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The Study of Photosensitized Reactions of Nitrobenzene and m-Dinitro Benzene Using Benzophenone As a Sensitizer under Visible Light Irradiation 在可见光照射下以二苯甲酮为敏化剂对硝基苯和间二硝基苯的光敏化反应的研究
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701280
Pranav Trivedi, Chandramauly Sharma, Kuldeep Sharma, Umeshchandra Pande
{"title":"The Study of Photosensitized Reactions of Nitrobenzene and m-Dinitro Benzene Using Benzophenone As a Sensitizer under Visible Light Irradiation","authors":"Pranav Trivedi, Chandramauly Sharma, Kuldeep Sharma, Umeshchandra Pande","doi":"10.1134/s0036024424701280","DOIUrl":"https://doi.org/10.1134/s0036024424701280","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The photosensitized reaction of nitrobenzene and its derivatives, including dinitrobenzene, has been extensively investigated in an aqueous alkaline medium using Benzophenone as a sensitizer under visible light irradiation. A 100 W tungsten lamp was employed for the purpose of irradiation. The presence of the strongly electron-withdrawing NO<sub>2</sub> group leads to polarization of the C–H bond. In this process, the triplet excited state of benzophenone initiates H<sup>+</sup> abstraction from the polarized C–H bond of nitrobenzene (NB) and meta-dinitrobenzene (<i>m</i>-DNB) through exciplex formation. Proton abstraction results in the formation of free radicals for both NB and <i>m</i>-DNB, followed by dimerization of the free radicals. The observed rate of the reaction follows the order <i>m</i>-DNB &gt; NB. However, no photochemical reaction was observed for <i>p</i>-dinitrobenzene (<i>p</i>-DNB). Various parameters such as pH, substrate concentration, sensitizer concentration, light intensity, solvent effect, and the rate of the photochemical reaction were investigated. The quantum efficiency of the product was determined using a potassium ferrioxalate actinometer. The formation of the product occurs through exciplex formation from the triplet excited state. The possible products, namely 2,2'-dinitro biphenyl and 2,2'-4,4'-tetranitro biphenyl, were confirmed using UV–visible spectrophotometry and mass spectrometry. Finally, a proposed reaction mechanism was suggested based on the experimental findings.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197452","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
Thermodynamic Properties of the Carbosilane Dendrimer of the Sixth Generation with Terminal Trimethylsilylsiloxane Groups 带有末端三甲基硅氧烷基团的第六代碳硅烷树枝状聚合物的热力学性质
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701000
N. N. Smirnova, S. S. Sologubov, A. V. Markin, S. A. Milenin, E. A. Tatarinova, A. M. Muzafarov
{"title":"Thermodynamic Properties of the Carbosilane Dendrimer of the Sixth Generation with Terminal Trimethylsilylsiloxane Groups","authors":"N. N. Smirnova, S. S. Sologubov, A. V. Markin, S. A. Milenin, E. A. Tatarinova, A. M. Muzafarov","doi":"10.1134/s0036024424701000","DOIUrl":"https://doi.org/10.1134/s0036024424701000","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The temperature dependence of the heat capacity of the sixth generation carbosilane dendrimer with terminal trimethylsilylsiloxane groups was determined by high-precision adiabatic vacuum calorimetry in the temperature range 6–318 K and differential scanning calorimetry in the range 300–600 K. Anomalous changes in the heat capacity were discovered in the range <i>T</i> = 179–200 K due to devitrification of the dendrimer and in the range 380–450 K due to the nanoscale effect characteristic of dendrimers of high generations. The thermal stability of the compound was studied by thermogravimetric analysis, and the temperature of the start of thermal destruction was found to be 600 K. The experimental data obtained were used to calculate the standard thermodynamic functions of the dendrimer for the range from <i>T</i> → 0 to 600 K for various physical states, as well as the standard entropy of its formation in the devitrified state at <i>T</i> = 298.15 K.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197413","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
Phase Equilibria in the Na+,K+//Cl–,NO $$_{3}^{ - }$$ –H2O System near Boiling Temperatures. II. Modeling a Reciprocal System 沸腾温度附近 Na+、K+//Cl-、NO $$_{3}^{ - }$$ -H2O 系统中的相平衡。II.互易体系建模
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701164
M. N. Mamontov, S. V. Kurdakova, I. A. Uspenskaya
{"title":"Phase Equilibria in the Na+,K+//Cl–,NO $$_{3}^{ - }$$ –H2O System near Boiling Temperatures. II. Modeling a Reciprocal System","authors":"M. N. Mamontov, S. V. Kurdakova, I. A. Uspenskaya","doi":"10.1134/s0036024424701164","DOIUrl":"https://doi.org/10.1134/s0036024424701164","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The phase equilibria in the Na<sup>+</sup>,K<sup>+</sup>//Cl<sup>–</sup>,NO<span>(_{3}^{ - })</span>–H<sub>2</sub>O reciprocal system in the temperature range 373–573 K were modeled using the set of parameters presented in communication I of this work. According to the results of calculations, this system has a stability region of the liquid, which boils without forming a third phase (precipitate). The change in the boiling temperature was traced for selected individual bulk compositions of the system during the gradual evaporation of water from it. In the experimental determination of the boiling points or activity of water for saturated solutions formed by the dissolution of salts with opposite cations and anions, one should take into account that the composition of such solutions will change with any changes in the total concentrations of the salts of the system if a salt other than the one used for mixing appears in the precipitate.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197453","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
Thermodynamic Study of the Sorption of Gaseous Dimethylformamide on an Organometallic Framework [Zn4(ndc)4(ur)2(dmf)] 气态二甲基甲酰胺在有机金属框架 [Zn4(ndc)4(ur)2(dmf)] 上吸附的热力学研究
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701103
L. N. Zelenina, T. P. Chusova, S. A. Sapchenko, N. V. Gelfond
{"title":"Thermodynamic Study of the Sorption of Gaseous Dimethylformamide on an Organometallic Framework [Zn4(ndc)4(ur)2(dmf)]","authors":"L. N. Zelenina, T. P. Chusova, S. A. Sapchenko, N. V. Gelfond","doi":"10.1134/s0036024424701103","DOIUrl":"https://doi.org/10.1134/s0036024424701103","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Pressures of saturated and unsaturated vapors of dimethylformamide (C<sub>3</sub>H<sub>7</sub>NO) in the host (organometallic framework [Zn<sub>4</sub>(dmf)(ur)<sub>2</sub>(ndc)<sub>4</sub>]) and guest (C<sub>3</sub>H<sub>7</sub>NO) system are measured using static tensiometry with membrane null-manometers across the 305–459 K range of temperatures. Temperature dependences of the pressures for the guest transition from the host framework into the gas phase are obtained from the experimental data. The enthalpies and entropies of these processes are determined, and the change in Gibbs energy during the bonding of C<sub>3</sub>H<sub>7</sub>NO to the framework is calculated. The obtained data are used to draw conclusions about the nature of interactions between the organometallic framework and dimethylformamide. Findings are compared to previously studied sorption processes of water, benzene, and ferrocene on [Zn<sub>4</sub>(dmf)(ur)<sub>2</sub>(ndc)<sub>4</sub>].</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197428","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
Prediction of Diffusion Coefficients for Organic Compounds in Dilute Aqueous Solutions 稀释水溶液中有机化合物的扩散系数预测
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701218
Lihua Zuo, Liuping Chen, Mingbiao Luo
{"title":"Prediction of Diffusion Coefficients for Organic Compounds in Dilute Aqueous Solutions","authors":"Lihua Zuo, Liuping Chen, Mingbiao Luo","doi":"10.1134/s0036024424701218","DOIUrl":"https://doi.org/10.1134/s0036024424701218","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Diffusion coefficient is one of the most important properties in industrial applications. A new correlation equation to estimate the diffusion coefficients of solutes in aqueous solution at infinite dilution was developed, based on the linear free energy relationships (LFERs) theory and empirical equation. The mean relative deviation (MD) of the obtained equation is 5.35%, and the squared correlation (<i>R</i><sup>2</sup>) is 0.990 after calculating 474 data points of 118 compounds. This equation exhibits better performance on the aspect of simplicity, accuracy, applicable and temperature range. This study successfully connected macroscopic physical properties with their molecular microstructure by diffusion coefficient of substances.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197429","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
Phase Equilibria in the Na+,K+//Cl–,NO $$_{3}^{ - }$$ –H2O System near Boiling Temperatures. I. Modeling of Ternary Systems 沸腾温度附近 Na+、K+//Cl-、NO $$_{3}^{ - }$$ -H2O 系统中的相平衡。I. 三元体系建模
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701152
M. N. Mamontov, S. V. Kurdakova, I. A. Uspenskaya
{"title":"Phase Equilibria in the Na+,K+//Cl–,NO $$_{3}^{ - }$$ –H2O System near Boiling Temperatures. I. Modeling of Ternary Systems","authors":"M. N. Mamontov, S. V. Kurdakova, I. A. Uspenskaya","doi":"10.1134/s0036024424701152","DOIUrl":"https://doi.org/10.1134/s0036024424701152","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Partial reoptimization of the parameters of the Wang–Gruszkiewicz model has been performed, which made it possible to describe phase equilibria in boundary ternary systems that form a Na<sup>+</sup>,K<sup>+</sup>//Cl<sup>–</sup>,NO<span>(_{3}^{ - })</span>–H<sub>2</sub>O reciprocal system near the boiling temperatures. The regions of stability of the liquid phase, i.e., the compositions of solutions whose boiling does not lead to isolation of a solid phase were determined. At definite ratios of the amounts of sodium and potassium nitrates in the NaNO<sub>3</sub>–KNO<sub>3</sub>–H<sub>2</sub>O system, the vapor pressure of water over the saturated solutions equals the atmospheric pressure at two different temperatures.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197423","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
Density, Viscosity, Spectra and Quantum Chemistry Analysis of Dimethyl Sulfoxide and Ethylene Glycol Propyl Ether Mixtures 二甲基亚砜和乙二醇丙醚混合物的密度、粘度、光谱和量子化学分析
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701267
Yanli Liu, Ying Zhang, Kun Liu, Liting Kong, Xiaohong Xie, Jianbin Zhang
{"title":"Density, Viscosity, Spectra and Quantum Chemistry Analysis of Dimethyl Sulfoxide and Ethylene Glycol Propyl Ether Mixtures","authors":"Yanli Liu, Ying Zhang, Kun Liu, Liting Kong, Xiaohong Xie, Jianbin Zhang","doi":"10.1134/s0036024424701267","DOIUrl":"https://doi.org/10.1134/s0036024424701267","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The density (ρ) and dynamic viscosity (η) values of the binary mixed solution (ethylene glycol propyl ether (2-PE) and dimethyl sulfoxide (DMSO)) with different concentrations were measured by Ubbelohde viscometer (0.8–0.9 mm in diameter) and 25 mL pycnometer at atmospheric pressure and 293.15–318.15 K of the temperature. According to the ρ and η values, the viscosity deviation (<span>(Delta {{eta }})</span>), excess molar volume (<span>(V_{m}^{E})</span>), partial molar volume (<span>({{bar {V}}_{{text{1}}}})</span>,<span>(~{{bar {V}}_{{text{2}}}})</span>), apparent molar volume (<span>({{V}_{{notbigcirc {text{,1}}}}})</span>,<span>(~{{V}_{{notbigcirc {text{,2}}}}})</span>), excess Gibbs energy of activation for viscous flow (<span>(Delta {{G}^{E}})</span>), and thermal expansion coefficient (<span>({{{{alpha }}}_{p}})</span>) of the mixed solution were obtained by the calculation method. In addition, the intermolecular forces between 2-PE and DMSO were analyzed by infrared spectra (FTIR), ultraviolet spectra (UV–Vis) and fluorescence spectra. The results showed that hydrogen bond is formed between the hydrogen atom on hydroxyl of 2-PE and oxygen atom of DMSO, and the hydrogen bond affects the physical properties of the binary system. Based on the analysis above, the result was interpreted as (CH<sub>3</sub>)<sub>2</sub>S=O···HOCH<sub>2</sub>CH<sub>2</sub>OCH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub>.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197425","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
Mass Spectrometric Study of the Interaction of Y2O3 with Carbon at High Temperatures 高温下 Y2O3 与碳相互作用的质谱研究
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701073
Yu. I. Folomeikin, V. L. Stolyarova, S. I. Lopatin
{"title":"Mass Spectrometric Study of the Interaction of Y2O3 with Carbon at High Temperatures","authors":"Yu. I. Folomeikin, V. L. Stolyarova, S. I. Lopatin","doi":"10.1134/s0036024424701073","DOIUrl":"https://doi.org/10.1134/s0036024424701073","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The evaporation of Y<sub>2</sub>O<sub>3</sub> in the presence of carbon was studied by high-temperature differential mass spectrometry. In the temperature range 1950–2200 K, the vapor above the Y<sub>2</sub>O<sub>3</sub>–C system contains YO and atomic yttrium. At elevated temperatures, the partial pressure of YO vapor over the Y<sub>2</sub>O<sub>3</sub>–C system decreases compared to the partial pressure of YO vapor over individual Y<sub>2</sub>O<sub>3</sub>, leading to a decrease in the activity of yttrium oxide in the system.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197445","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 Thermodynamic Properties of Palladium Bis-hexafluoroacetylacetonate 双六氟乙酰丙酮钯的低温热力学性质
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s0036024424701012
M. A. Bespyatov, T. M. Kuzin, D. S. Shevelev, N. V. Gelfond
{"title":"Low-Temperature Thermodynamic Properties of Palladium Bis-hexafluoroacetylacetonate","authors":"M. A. Bespyatov, T. M. Kuzin, D. S. Shevelev, N. V. Gelfond","doi":"10.1134/s0036024424701012","DOIUrl":"https://doi.org/10.1134/s0036024424701012","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The heat capacity of palladium bis-hexafluoroacetylacetonate (Pd(C<sub>5</sub>HF<sub>6</sub>O<sub>2</sub>)<sub>2</sub>; CAS no. 64916-48-9) is measured adiabatically in the range of 6.088–307.596 K. The obtained data are used to calculate thermodynamic functions (entropy, increment of enthalpy, reduced Gibbs energy) in the range of 0–310 K. The functional behavior of the heat capacity exhibits an anomaly in the range of 145–285 K. The anomaly has a maximum at a temperature of <i>T</i> ≈ 225 K, indicating a second-order phase transition in this range of temperatures. Anomalous contributions to entropy and enthalpy are calculated.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197417","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
Preparation, Characterization, and Catalytic Performance of ZrO2–SnO2 Nanocatalysts for the Direct Synthesis of DMC 用于直接合成 DMC 的 ZrO2-SnO2 纳米催化剂的制备、表征和催化性能
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2024-09-09 DOI: 10.1134/s003602442470119x
Midong Shi, Zichun Chen, Wenhua Mao, Bin Deng, Hongbo He, Yan Duan, Wei Zeng, Lu Liu, Fangfang Dai
{"title":"Preparation, Characterization, and Catalytic Performance of ZrO2–SnO2 Nanocatalysts for the Direct Synthesis of DMC","authors":"Midong Shi, Zichun Chen, Wenhua Mao, Bin Deng, Hongbo He, Yan Duan, Wei Zeng, Lu Liu, Fangfang Dai","doi":"10.1134/s003602442470119x","DOIUrl":"https://doi.org/10.1134/s003602442470119x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The aim of this work was to explore the influence of temperature on the structural composition and catalytic activity of ZrO<sub>2</sub>–SnO<sub>2</sub> catalysts for direct conversion of CO<sub>2</sub> to dimethyl carbonate (DMC). ZrO<sub>2</sub>–SnO<sub>2</sub> were prepared via a template-precipitation method and characterized by SEM, XRD, Raman spectroscopy, XPS, NH<sub>3</sub>/CO<sub>2</sub>-TPD, and N<sub>2</sub> adsorption/desorption isotherms. The results showed that the calcination and hydrothermal temperature had opposite effects on the acid-base site and oxygen vacancy number of catalysts, and also have different effects on the crystal and pore structure. That confirmed that temperature had a significant impact on the studied catalysts. Furthermore, the effects of reaction conditions on the yield of DMC were investigated. The optimum reaction conditions were the catalyst amount of 0.8 g, temperature of 150°C, and time of 20 h, and the corresponding DMC yield was 1.85 mmol/(g catalyst). Thus, this work validated the temperature control strategy of catalyst preparation.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197426","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
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