Progress in Reaction Kinetics and Mechanism最新文献

Understanding the rate-limiting step adsorption kinetics onto biomaterials for mechanism adsorption control 了解生物材料的限速吸附动力学，实现机制吸附控制

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2024-01-01 DOI: 10.1177/14686783241226858

Sahmoune Mohamed Nasser, M. Abbas, Mohamed Trari

{"title":"Understanding the rate-limiting step adsorption kinetics onto biomaterials for mechanism adsorption control","authors":"Sahmoune Mohamed Nasser, M. Abbas, Mohamed Trari","doi":"10.1177/14686783241226858","DOIUrl":"https://doi.org/10.1177/14686783241226858","url":null,"abstract":"Biomaterials are a class of porous materials that have been widely exploited over the past two decades. However, the implications of controlling adsorption by rate-limiting steps are still not adequately established. Identifying the rate-limiting step is a promising approach for the design of adsorption systems. In this review, we study in detail the rate-limiting step of the adsorption of dyes in aqueous media on biomaterials to rationalize the factors governing the rate-limiting step involved in the adsorption process using empirical kinetics and mass transfer models. This knowledge is then applied to identify the best fit of these models to study the rate-controlling step involved in the adsorption process, which is crucial for the design of the adsorption system. This review first studies the limiting step of adsorption of dyes in an aqueous medium on biomaterials. Kinetic modeling is used to better understand the rate control step involved in biosorption. Generally, the equations used are empirical models of kinetics and mass transfer and the biomaterials come from the following categories: agricultural and industrial waste, algae, fungi, bacteria, and plants. In most adsorption studies reported in this review, the pseudo second-order model was found to be best suited for fitting the kinetic data of dyes on biomaterials, indicating that chemisorption is the rate-limiting step that controls adsorption. Concerning the diffusion effects of mass transfer, intraparticle diffusion is among the most often used models to examine the rate-limiting step which is controlled by both film diffusion and intraparticle diffusion. The first takes place when the external transfer is greater than the internal transfer while the opposite occurs in the case of porous diffusion. However, the majority of works do not study the real step of controlling the overall adsorption kinetics, namely, film diffusion or intraparticle diffusion.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139455314","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

Entropy controlled reaction of piperidine with isatin derivatives in 80% aqueous methanol 哌啶与靛红衍生物在 80% 甲醇水溶液中的熵控制反应

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2023-12-01 DOI: 10.1177/14686783231218882

Mohamed A El-Rahman, Mahmoud F. Ibrahim, M. F. Fathalla, S. El-Sadany, Ezzat A. Hamed, A. Z. Omar

引用次数: 0

Kinetics and mechanism of the oxidation of furfural by benzimidazolium dichromate under non aqueous medium 重铬酸苯并咪唑在非水介质中氧化糠醛的动力学和机理

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-09-01 DOI: 10.1177/14686783211045815

R. Kalal, D. Panday

{"title":"Kinetics and mechanism of the oxidation of furfural by benzimidazolium dichromate under non aqueous medium","authors":"R. Kalal, D. Panday","doi":"10.1177/14686783211045815","DOIUrl":"https://doi.org/10.1177/14686783211045815","url":null,"abstract":"The oxidation of furfural (2-furaldehyde), by benzimidazolium dichromate (BIDC) in dimethyl sulfoxide, leads to the formation of 2-furoic acid. The reaction is first order with respect to BIDC and hydrogen-ion. However, Michaelis–Menten type kinetics was observed with respect to furfural. The formation constants of furfural-BIDC complexes and the rates of their decomposition have been evaluated at different temperatures. Thermodynamic parameters of the complex formation and activation parameters for the decomposition of the complexes have been calculated. The deuterium isotope effect observed in the oxidation of furfural (kH/kD = 6.23 at 298 K) indicated an α-C-H bond cleavage in the rate-determining step. The reaction has been studied in 19 organic solvents. The analysis of the solvent effect showed that the role of cation-solvation is major. Based on the kinetic data, analysis of the solvent effect and the result of some non-kinetic parameters, a mechanism involving rate-determining oxidative decomposition of the complex, through hydride-ion transfer via a cyclic transition state, to give the corresponding product is suggested.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73952750","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

Two coordination polymers: Crystal structures, prevention and nursing values on postoperative infection 两种配位聚合物:晶体结构及其对术后感染的预防和护理价值

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-01-01 DOI: 10.1177/14686783221090376

Meng Ding, Fan Yang, Q. Lv, Qiongfang Liu

引用次数: 0

Melting aspects in flow of second grade nanomaterial with homogeneous–heterogeneous reactions and irreversibility phenomenon: A residual error analysis 二级纳米材料均相-非均相反应及不可逆性流动中的熔化现象:残余误差分析

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-01-01 DOI: 10.1177/14686783221090374

F. Alzahrani, Muhammad Ijaz Khan

{"title":"Melting aspects in flow of second grade nanomaterial with homogeneous–heterogeneous reactions and irreversibility phenomenon: A residual error analysis","authors":"F. Alzahrani, Muhammad Ijaz Khan","doi":"10.1177/14686783221090374","DOIUrl":"https://doi.org/10.1177/14686783221090374","url":null,"abstract":"Here, we scrutinize the entropy analysis in magnetohydrodynamic flow of second-grade nanomaterials with melting effect subject to stretchable bended surface. Heat attribution is modeled through first law of thermodynamics with radiation effect. Major physical effect of random and thermophoretic motion is also addressed. Feature of irreversibility (entropy rate) analysis is also discussed. Isothermal cubic autocatalyses chemical reaction at catalytic surface is discussed. Nonlinear dimensionless differential system is developed through adequate transformation. Optimal homeotypic analysis method (OHAM) is employed to construct convergent solution. Influence of physical variables on entropy rate, fluid flow, concentration, and thermal field is discussed. An augmentation in fluid flow is noticed through curvature variable, while reverse effect holds for magnetic variable. A reverse effect holds for fluid flow and thermal field through melting variable. Entropy analysis is augmented with variation in melting variable. Reduction occurs in concentration through thermophoretic variable, while an opposite effect holds for thermal field. An increment in melting variable leads to reduced concentration. Larger estimation of radiation variable improves entropy analysis.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75896975","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: 1

A new mixed-ligand Mn(II) coordination polymer: Protective and nursing values on renal calculus via reducing the Ca2+ concentration in urine 一种新型混合配体Mn(II)配位聚合物:通过降低尿中Ca2+浓度对肾结石的保护和护理价值

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-01-01 DOI: 10.1177/14686783221090373

Yan Yang, Shenmin Zhang, Yi-Qian Zhang, Liang Chen, Tao Xiong

引用次数: 0

Computational analysis of induced magnetohydrodynamic non-Newtonian nanofluid flow over nonlinear stretching sheet 非牛顿纳米流体在非线性拉伸片上的感应磁流体动力学计算分析

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-01-01 DOI: 10.1177/14686783211072712

M. Anwar, H. Firdous, A. Zubaidi, N. Abbas, S Nadeem

引用次数: 15

Effect of nano bentonite on direct yellow 50 dye removal; Adsorption isotherm, kinetic analysis, and thermodynamic behavior 纳米膨润土对黄50染料直接脱除的影响吸附等温线，动力学分析和热力学行为

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2022-01-01 DOI: 10.1177/14686783221090377

A. Mahmoud

{"title":"Effect of nano bentonite on direct yellow 50 dye removal; Adsorption isotherm, kinetic analysis, and thermodynamic behavior","authors":"A. Mahmoud","doi":"10.1177/14686783221090377","DOIUrl":"https://doi.org/10.1177/14686783221090377","url":null,"abstract":"Developing countries suffering from the toxicity of different industrial effluents especially dyes. This study successfully prepared and characterized nano-bentonite for anionic dye removal (DY 50). The prepared nanoparticles were characterized by X-Ray Diffraction (XRD), X-ray Fluorescence (XRF), Scanning Electron Microscope (SEM), EDAX analysis, FT-IR, and TGA and the obtained results indicated the formation of nanoparticles with an average size of 15 nm. The effect of different operating conditions was studied using different pH, dose, contact time, temperature, and initial DY 50 concentrations. The obtained results indicated that nano bentonite was able to adsorb about 78.3 and 100% for initial concentrations of 100±8.1 and 20 ±1.62 mg/L, respectively. The optimum removal conditions were observed at acidic media (pH 3) using sorbent material dosage 1 g/L for 45 min and 30°C. The adsorption isotherm, kinetic analysis, and thermodynamic behavior were studied by using linear equation form, and the adjusted R2 was compared to detect the preferred models. The adsorption isotherm indicated that heterogeneous, as well as multilayer adsorption, plays an important role in the removal of dye. Kinetic studies indicated the chemisorption interaction between sorbed and adsorbed molecules. Thermodynamic behavior indicated the reaction is exothermic with ∆H equal to −5.24 KJ/mol and ∆S equal −74.2 J/K.mol. Finally, this study strongly recommended using nano bentonite for DY 50 removal from an aqueous solution. The RSM relations show significant relations in all removal models with p-value <0.001. The ANN results indicated that the most effective operating conditions are the effect of nano bentonite dose followed by the pH effect.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89901066","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: 6

Three-component reaction involving isoquinoline and dimethyl acethylenedicarboxylate in the presence of indole: Theoretical and experimental investigations of the reaction mechanism 吲哚存在下异喹啉与乙酰二甲基羧酸二甲酯的三组分反应:反应机理的理论和实验研究

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2021-01-01 DOI: 10.1177/1468678320956864

M. Zakari̇anezhad, S. Habibi‐Khorassani, Batoul Maki̇abadi̇, E. Zeydabadi

引用次数: 1

Effects of pyrolysis parameters on the distribution of pyrolysis products of Miscanthus 热解参数对芒草热解产物分布的影响

IF 0.7 4区化学

Progress in Reaction Kinetics and Mechanism Pub Date : 2021-01-01 DOI: 10.1177/14686783211010970

Zhangmao Hu, Tong Zhou, Hong Tian, Leihua Feng, Can Yao, Yanshan Yin, Donglin Chen

{"title":"Effects of pyrolysis parameters on the distribution of pyrolysis products of Miscanthus","authors":"Zhangmao Hu, Tong Zhou, Hong Tian, Leihua Feng, Can Yao, Yanshan Yin, Donglin Chen","doi":"10.1177/14686783211010970","DOIUrl":"https://doi.org/10.1177/14686783211010970","url":null,"abstract":"This work presents a comprehensive study on the effects of pyrolysis parameters (pyrolysis temperature, residence time, and heating rate) on the distribution of pyrolysis products of Miscanthus. Py-GC/MS (Pyrolysis-gas chromatography/mass) was conducted to identify building blocks of value-added chemical from Miscanthus. The results showed that the main pyrolysis products of Miscanthus were ketone, aldehyde, phenol, heterocycles, and aromatic compounds. The representative compounds of ketone and aldehyde compounds produced at different pyrolysis temperatures changed obviously, while the representative compounds of phenolic, heterocyclic, and aromatic compounds had no obvious change. Large-scale pyrolysis of Miscanthus had begun at 400°C, and the relative content of pyrolysis products from Miscanthus reached the maximum of 98.34% at 700°C. The relative peak area ratio of phenol and aromatic compounds reached the maximum and minimum at the residence time of 5 and 10 s, while the relative peak area ratio of ketone compounds showed the opposite trend. The relative peak area ratio of aldehyde compounds was higher under shorter or longer residence time. For heterocyclic compounds, the relative peak area ratio reached the maximum of 27.0% at residence time of 10 s. The faster or slower heating rate was beneficial to the production of aldehyde and phenol compounds. The relative peak area ratio of ketone compounds reached the maximum at 10,000°C/s, 70°C/s, and 10°C/s, and the relative peak area ratio tendency of heterocyclic compounds was similar to ketone. For aromatic compounds, the overall fluctuations were large, and the relative peak area ratio was the highest at the heating rate of 100°C/s.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88667205","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: 11