Reaction Kinetics, Mechanisms and Catalysis最新文献_第3页

Data-augmenting self-attention network for predicting photocatalytic degradation efficiency: a study on TiO2/curcumin nanocomposites 用于预测光催化降解效率的数据增强自注意力网络：对二氧化钛/姜黄素纳米复合材料的研究

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-10 DOI: 10.1007/s11144-024-02695-x

Lahcene Aid, Mohamed Salaheddine Abbou, Ahmed Riadh Gafour, Asmaa Bouazza, Abdelakder Dehbi, S. Bassaid, Ali Alsalme, Massimo Messori

引用次数: 0

Construction of N-doped 2D TiO2/MoS2 S-scheme heterojunction for enhanced photodegradation activity by rhodamine B 构建掺杂 N 的二维 TiO2/MoS2 S 型异质结以增强罗丹明 B 的光降解活性

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-10 DOI: 10.1007/s11144-024-02702-1

Bayrammyrat Ovezmyradov, Huiyuan Chen, Shouzhen Duan, Meitong Zhu, Duo Zhang, Caihong Xue, Movlamberdi Ovezmyradov, Guijun Yang

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Multifunctional nanoparticles as effective adsorbents for fluoride removal from synthetic and drinking waters: equilibrium, kinetics, and thermodynamics 多功能纳米颗粒作为有效吸附剂去除合成水和饮用水中的氟化物：平衡学、动力学和热力学

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-09 DOI: 10.1007/s11144-024-02681-3

N. Kamoun, S. Raissi, M. Younes, Hamza Elfil

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Atmospheric water sorption kinetics of a biomass-derived sorbent: a preliminary study 生物质吸附剂的大气吸水动力学：初步研究

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-09 DOI: 10.1007/s11144-024-02694-y

G. Raveesh, R. Goyal, S. K. Tyagi

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Synthesis and characterization of biowaste-derived porous carbon supported palladium: a systematic study as a heterogeneous catalyst for the reduction of nitroarenes 生物废弃物衍生多孔碳支撑钯的合成与表征：作为硝基烯烃还原异相催化剂的系统研究

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-09 DOI: 10.1007/s11144-024-02690-2

Apoorva Shetty, G. Hegde

引用次数: 0

Castor biogasoline via catalytic cracking over activated Ni–Zn/activated natural zeolite catalyst 活化镍锌/活化天然沸石催化剂催化裂解蓖麻生物汽油

IF 1.8 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-09 DOI: 10.1007/s11144-024-02701-2

Aman Santoso, Amalia Bella Saputri, Evilia Wahyuning, Sumari Sumari, Eli Hendrik Sanjaya, Muntholib Muntholib

{"title":"Castor biogasoline via catalytic cracking over activated Ni–Zn/activated natural zeolite catalyst","authors":"Aman Santoso, Amalia Bella Saputri, Evilia Wahyuning, Sumari Sumari, Eli Hendrik Sanjaya, Muntholib Muntholib","doi":"10.1007/s11144-024-02701-2","DOIUrl":"https://doi.org/10.1007/s11144-024-02701-2","url":null,"abstract":"Synthesizing biogasoline from castor oil was catalyzed by Activated Natural Zeolite (ANZ) catalyst modified Ni and Zn metals in batch-cracking reactor. The process was affected by the modified catalyst on variation of Ni:Zn ratio (1:1, 1:2, and 2:1) at the calcination temperature of 500 °C, and variation of the calcination temperature (500, 600, and 700 °C) At Ni–Zn (1:1). After characterizations and analysis, the higher the calcination temperature, the lower the acidity of the catalyst caused the resulting yield also decreases. The density of the product obtained ranged from 0.765–0.83 g/mL, the viscosity ranged from 1.42–1.95, the refractive index was 1.421–1.431, and the calorific value tested on the cracking product with Ni:Zn (1:1) (500 °C) Fraction I, Fraction II, and Fraction III were 0.9966 kcal/kg, 0.9068 kcal/kg, and 0.8755 kcal/kg, respectively. The results of FTIR and GC–MS showed that the composition of the catalytic cracking product was composed of C6–C14 hydrocarbons consisting of aldehydes, alkanes, alkenes, and carboxylic acids. The composition was dominated by biogasoline compounds (C5–C12).","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969604","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

Exploring the potential of metal-catalysis with N, N-type ligands in [3+2] cycloaddition reactions of azides and alkynes using theoretical tools 利用理论工具探索叠氮化物和炔烃的 [3+2] 环加成反应中 N、N 型配体的金属催化潜力

IF 1.7 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-08 DOI: 10.1007/s11144-024-02696-w

AA Khairbek, Maha I. Al-Zaben, Faheem Abbas, M. Badawi, Renjith Thomas

引用次数: 0

Fabrication and evaluation of ZnO–Ag nanocomposites exhibiting enhanced antibacterial properties and their potential applications 具有增强抗菌性能的氧化锌-银纳米复合材料的制备和评估及其潜在应用

IF 1.8 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-01 DOI: 10.1007/s11144-024-02699-7

Alisha Verma, Nitesh Kumar, Rinki Agarwal, Sonal Chauhan, V. K. Jain, Sucheta Sengupta

引用次数: 0

Optimization of concentrations of natural antioxidants (curcumin) to enhance the thermal stability of ultra high molecular weight polyethylene (UHMWPE) 优化天然抗氧化剂（姜黄素）的浓度，提高超高分子量聚乙烯（UHMWPE）的热稳定性

IF 1.8 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-07-31 DOI: 10.1007/s11144-024-02697-9

Nidhi Khattar, Jagriti, Shagun Kainth, Piyush Sharma, Vishal Ahlawat, Urmila Berar, Pawan K. Diwan

{"title":"Optimization of concentrations of natural antioxidants (curcumin) to enhance the thermal stability of ultra high molecular weight polyethylene (UHMWPE)","authors":"Nidhi Khattar, Jagriti, Shagun Kainth, Piyush Sharma, Vishal Ahlawat, Urmila Berar, Pawan K. Diwan","doi":"10.1007/s11144-024-02697-9","DOIUrl":"https://doi.org/10.1007/s11144-024-02697-9","url":null,"abstract":"The impact of different concentrations of natural antioxidants (curcumin) on the thermal stability of UHMWPE (ultra-high molecular weight polyethylene) is examined via the thermogravimetric (TGA/DTA) technique, in the temperature region 50–600 °C at a 5 °C/min heating rate. This work employs the model fitting (Coats and Redfern) approach to determine the optimal curcumin concentration. UHMWPE samples at optimum concentration are further subjected to three other heating rates, viz., 10, 15 and 20 °C. A bi-Gaussian asymmetric function is utilized for deconvolution to elucidate the complexities of thermal decomposition. Through deconvolution, two peaks are obtained and the activation energy corresponding to each peak is determined through two iso-conversional kinetic (Friedman and Starink) models. By utilizing activation energy, the random nucleation reaction mechanism involved in thermal decomposition is recognized. Finally, changes in entropy (left(Delta Sright)), enthalpy (left(Delta Hright)) and Gibbs free energy (left(Delta Gright)) are determined.","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872325","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

Model-free kinetic analysis of multi-step thermal decomposition of ammonium perchlorate coated with reduced graphene oxide 包覆还原氧化石墨烯的高氯酸铵多步热分解的无模型动力学分析

IF 1.8 4区化学

Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-07-30 DOI: 10.1007/s11144-024-02683-1

Hamdane Akbi, Souleymen Rafai, Ahmed Mekki, Slimane Bekhouche, Sabri Touidjine, Elamine Louafi, Ahmed Saim, Mohamed Abderrahim Hamouche

{"title":"Model-free kinetic analysis of multi-step thermal decomposition of ammonium perchlorate coated with reduced graphene oxide","authors":"Hamdane Akbi, Souleymen Rafai, Ahmed Mekki, Slimane Bekhouche, Sabri Touidjine, Elamine Louafi, Ahmed Saim, Mohamed Abderrahim Hamouche","doi":"10.1007/s11144-024-02683-1","DOIUrl":"https://doi.org/10.1007/s11144-024-02683-1","url":null,"abstract":"This study investigates the effect of coating AP with RGO on its thermal decomposition kinetics and behavior. Differential scanning calorimetry (DSC) was performed for pure AP and AP@RGO at several heating rates. DSC curves of AP@RGO for various heating rates were split into individual reactions using a mathematical deconvolution approach. The assessment of kinetic triplets of various reactions was accomplished for both AP and AP@RGO using an effective model-free approach (MFA). Deconvolution of the DSC curve for AP@RGO reveals three distinct decomposition processes, compared to only two observed in pure AP. Notably, the low-temperature decomposition reaction appears to be catalyzed by RGO, leading to a dramatic decrease in activation energy from 164 to 116 kJ/g. Conversely, the high-temperature decomposition remains uncatalyzed, with a slight increase in activation energy from 177 to 188 kJ/g. The catalytic effectiveness of RGO in the thermal decomposition process of AP fluctuates due to structural transformations within RGO and its degradation in the presence of perchloric acid.","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872328","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