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Impact of As-Prepared and Purifıed Multi-Walled Carbon Nanotubeson the Liquid-Phase Aerobic Oxidatıon of Hydrocarbons 制备和Purifıed多壁碳纳米管对烃类液相好氧Oxidatıon的影响
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.479
E. Zeynalov, A. Huseynov, E. Huseynov, N. Salmanova, Y. Nagiyev, N. Abdurakhmanova
{"title":"Impact of As-Prepared and Purifıed Multi-Walled Carbon Nanotubeson the Liquid-Phase Aerobic Oxidatıon of Hydrocarbons","authors":"E. Zeynalov, A. Huseynov, E. Huseynov, N. Salmanova, Y. Nagiyev, N. Abdurakhmanova","doi":"10.23939/chcht15.04.479","DOIUrl":"https://doi.org/10.23939/chcht15.04.479","url":null,"abstract":"The article presents simple kinetic approaches to study the effect of multi-walled carbon nanotubes (MWCNTs) additives on the aerobic oxidation of hydrocarbons and to propose real acceptable mechanisms of the process. The aerobic liquid phase low-temperature oxidation of ethylbenzene conducted in the presence of multi-walled carbon nanotubes has been used as a model pattern. Kinetic analysis established the catalytic action associated with the presence of the iron compounds in inner channels of MWCNTs. These compounds are identified as ferric carbides provoking decomposition of the ethylbenzene hydroperoxide and thereby suppressing the competitive route of alky-peroxide radicals addition to the nanocarbon cage. Thus the reaction finally proceeds in the autocatalytic mode.Contradictory conclusions on the effect of CNTs on the oxidation chain processes existing in the literature are associated with the lack of control over nature and content of metal impurities in channels of nanotubes.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75084264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Superhigh Adsorption of Cadmium(II) Ions onto Surface Modified Nano Zerovalent Iron Composite (CNS-nZVI): Characterization, Adsorption Kinetics and Isotherm Studies 表面改性纳米零价铁复合材料(CNS-nZVI)对镉离子的超高吸附:表征、吸附动力学及等温线研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.457
P. Deivasigamani, S. Ponnusamy, S. Sundararaman, S. A
{"title":"Superhigh Adsorption of Cadmium(II) Ions onto Surface Modified Nano Zerovalent Iron Composite (CNS-nZVI): Characterization, Adsorption Kinetics and Isotherm Studies","authors":"P. Deivasigamani, S. Ponnusamy, S. Sundararaman, S. A","doi":"10.23939/chcht15.04.457","DOIUrl":"https://doi.org/10.23939/chcht15.04.457","url":null,"abstract":"The efficiency of surface modified nanoscale zerovalent iron (nZVI) composite by cashew nut shell (CNS) was tested for the removal of cadmium ions from the aqueous solutions. 2 g/l CNS-nZVI was efficient for 98% removal. The adsorption capacity was 35.58 mg/g. The Freundlich isotherm (R2 = 0.9769) and the pseudo-second order adsorption kinetics data fitted well. This proved CNS-nZVI has a high removal efficiency for Cd(II) from aqueous solutions.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79753026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Antibiocorrosive Hybrid Materials with High Durability 具有高耐久性的抗腐蚀混合材料
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.500
K. Barbakadze, W. Brostow, N. Hnatchuk, G. Lekishvili, B. Arziani, K. Zagórski, N. Lekishvili
{"title":"Antibiocorrosive Hybrid Materials with High Durability","authors":"K. Barbakadze, W. Brostow, N. Hnatchuk, G. Lekishvili, B. Arziani, K. Zagórski, N. Lekishvili","doi":"10.23939/chcht15.04.500","DOIUrl":"https://doi.org/10.23939/chcht15.04.500","url":null,"abstract":"We have developed novel antibiocorrosive multifunctional hybrid materials based on functionalizedperfluoroalkylmethacrylate copolymerswith epoxy groups in main chainsand selected biologically active compounds.The hybrids are transparent, showgood adhesion to various surfaces (plastic, wood),high viscoelastic recovery in scratch testing,low wear rates and glass transitions above 323 K. No phase separation is seen in scanning electron micrography. Enhanced mechanical strength and good abrasion resistance are advantages for uses of our protective and antibiocorrosive coatings in various applications including protection of cultural heritage.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80459182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Physico-Chemical Peculiarities of Weighted Thermostable Plugging Materials Hydration 加权热稳定性封堵材料水化的物理化学特性
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.599
V. Orlovskyi, M. Malovanyy, V. Biletskyi, Mykola Sokur
{"title":"Physico-Chemical Peculiarities of Weighted Thermostable Plugging Materials Hydration","authors":"V. Orlovskyi, M. Malovanyy, V. Biletskyi, Mykola Sokur","doi":"10.23939/chcht15.04.599","DOIUrl":"https://doi.org/10.23939/chcht15.04.599","url":null,"abstract":"A new competitive class of plugging compositions (weighted non-shrink plugging materials) has been created using as components a fly ash from thermal power station, a weighting additive and a superplasticizer. X-ray phase analysis identified the composition of new materials formed in the hydration process of the developed plugging compositions. The kinetic curves of the plugging material expansion in a wide temperature range have been obtained. Rational temperature regimes of plugging materials hardening according to the criteria of strength and gas permeability of cement stone have been determined.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87200135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Activation and Characterization of Algerian Kaolinite, New and Green Catalyst for Synthesis of Polystyrene and Poly(1,3-dioxolane) 新型绿色合成聚苯乙烯和聚(1,3-二恶氧烷)催化剂阿尔及利亚高岭石的活化及表征
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.551
Sarra Sabrina Aiche, H. Derdar, Zakaria Cherifi, M. Belbachir, R. Meghabar
{"title":"Activation and Characterization of Algerian Kaolinite, New and Green Catalyst for Synthesis of Polystyrene and Poly(1,3-dioxolane)","authors":"Sarra Sabrina Aiche, H. Derdar, Zakaria Cherifi, M. Belbachir, R. Meghabar","doi":"10.23939/chcht15.04.551","DOIUrl":"https://doi.org/10.23939/chcht15.04.551","url":null,"abstract":"In the present work we have explored a new catalyst prepared with Algerian clay and a new method to synthesise polystyrene and poly(1,3-dioxolane). This technique consists of using Algerian modified clay (Kaolinite-H+) as a green catalyst. Kaolinite-H+ is a proton exchanged clay which is prepared through a simple exchange process. Synthesis experiments are performed in bulk. The polymerization of styrene in bulk leads to the yield of 83 % at room temperature with the reaction time of 3 h. Molecular weight of the obtained polystyrene is calculated by 1H NMR and is about 2196 g/mol. Polymerization of (1,3-dioxolane) is carried out at room temperature with the reaction time of 3 h and polymerization yield of 91 %. The calculated molecular weight of the obtained poly(1,3-dioxolane) is about 573 g/mol. The structure of the obtained polymers is confirmed by FT-IR and 1H NMR. The modified clay (Kaolinite-H+) is characterized by FT-IR, XRD and SEM analysis.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82181579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adsorption of Cationic and Anionic Dyes from Aqueous Solution Using Sunflower Husk 向日葵壳对水溶液中阳离子和阴离子染料的吸附研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.567
Huda A. Jaber, M. A. Jabbar
{"title":"Adsorption of Cationic and Anionic Dyes from Aqueous Solution Using Sunflower Husk","authors":"Huda A. Jaber, M. A. Jabbar","doi":"10.23939/chcht15.04.567","DOIUrl":"https://doi.org/10.23939/chcht15.04.567","url":null,"abstract":"The current study deals with the removal of cationic dye (brilliant green) and anionic dye (methyl orange) from wastewater by using sunflower husk as an adsorbent. The operation takes place batch wise by applying several concentrations of the dye solution with various adsorbent amounts, at a range of initial PH values and particle sizes at varying contact time intervals. The percent of dye removed for two dyes increased with increasing time and adsorbent dose and decreased with increasing the dye concentration and particle size. The equilibrium time differed according to conditions used. The optimum removal for brilliant green dye was 98 %, which was achieved at 50 ppm dye concentration, 2 gl adsorbent dose, 75 µm particles size and pH 7 at contact time of 1 h, compared with low removal for methyl orange that reached 54 % under optimum conditions (dye concentration 10 ppm, adsorbent dose 4 g/l, pH 3 at the same particles size and time). Kinetic studies were conducted and revealed that the adsorption was well defined by pseudo-second order model and could be described by the Langmuir isotherm.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90648408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Monomolecular Films of Organic Diacyl Diperoxides on the Interface of the Phases Water–Air 水-气相界面上有机二酰基二过氧化物的单分子膜
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.536
V. Dutka, O. Aksimentyeva, Yaroslav Kovalskyi, Natalya Oshchapovska
{"title":"Monomolecular Films of Organic Diacyl Diperoxides on the Interface of the Phases Water–Air","authors":"V. Dutka, O. Aksimentyeva, Yaroslav Kovalskyi, Natalya Oshchapovska","doi":"10.23939/chcht15.04.536","DOIUrl":"https://doi.org/10.23939/chcht15.04.536","url":null,"abstract":"Monomolecular films of diacyl diperoxides at the water–air phase interface have been studied. Their behaviour is influenced by the structure of the molecule and the solvent. The numerical values of the areas of molecules that are extrapolated to zero pressure are different, which indicates a different conformation of the molecules in the monolayer. The conformational states of diperoxides were calculated by quantum chemical methods. Experimental data and quantum chemical calculations are consistent with each other.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81240944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biodiesel Synthesis from the Used Cooking Oil Using CaO Catalyst Derived from Waste Animal Bones 从废动物骨骼中提取CaO催化剂，从废食用油中合成生物柴油
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.583
L. Buchori, D. Anggoro, A. Ma'ruf
{"title":"Biodiesel Synthesis from the Used Cooking Oil Using CaO Catalyst Derived from Waste Animal Bones","authors":"L. Buchori, D. Anggoro, A. Ma'ruf","doi":"10.23939/chcht15.04.583","DOIUrl":"https://doi.org/10.23939/chcht15.04.583","url":null,"abstract":"The synthesis of biodiesel from the used cooking oil with CaO catalyst from waste animal bones has been investigated. The content of free fatty acids (FFA) in the used cooking oil was reduced by adsorption using activated charcoal from a salak peel. Biodiesel synthesis was carried out via transesterification using CaO catalyst. The CaO catalyst was obtained from waste animal bones calcined in the Ney Vulcan furnace. The effect of calcination temperature was studied in the range of 873‒1273 K. The effect of catalyst loading was investigated by varying within the range of 1‒9 wt %. The methanol to oil molar ratio was investigated in the range from 6:1 to 18:1. The effect of the transesterification reaction time was studied with a time variation of 1‒5 h. The optimum operating conditions were determined. Under these conditions, the yield of biodiesel produced was 97.56 % with an ester content of 96.06 %. It was shown that the physicochemical properties of biodiesel produced meet the standards.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77225654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Cobalt Ferrite Nanocomposite as Electrochemical Sensor for The Detection of Guanine, Uric Acid and Their Mixture 纳米钴铁氧体复合材料检测鸟嘌呤、尿酸及其混合物的电化学传感器
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.520
Y. Kumar, V. Sharma, V. K. Vashistha, Rajasekhar VSR Pullabhotla, D. Das
{"title":"Cobalt Ferrite Nanocomposite as Electrochemical Sensor for The Detection of Guanine, Uric Acid and Their Mixture","authors":"Y. Kumar, V. Sharma, V. K. Vashistha, Rajasekhar VSR Pullabhotla, D. Das","doi":"10.23939/chcht15.04.520","DOIUrl":"https://doi.org/10.23939/chcht15.04.520","url":null,"abstract":"Cobalt ferrite nanocomposite was synthesized and characterized by analytical techniques such as FESEM, EDS and XRD. The average crystallite size was found to be in the range of 10–12 nm with a cubic structure. Further, the nanocomposite was used for the detection of guanine (GU) and uric acid (UA) and found to be an efficient electrode modifier. The lower limit of detection for GU and UA was found to be 300 nM and 400 nM, respectively","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79279640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalytic Action of Nitric Acid on The Hydrolysis of ETS-40 Ethyl Silicate 硝酸对ETS-40硅酸乙酯水解的催化作用
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.475
I. Lutsyuk, Y. Vakhula, I. Tupis, Iryna Iliuchok
{"title":"Catalytic Action of Nitric Acid on The Hydrolysis of ETS-40 Ethyl Silicate","authors":"I. Lutsyuk, Y. Vakhula, I. Tupis, Iryna Iliuchok","doi":"10.23939/chcht15.04.475","DOIUrl":"https://doi.org/10.23939/chcht15.04.475","url":null,"abstract":"The effect of concentrated nitric acid on the hydrolysis rate of ETS-40 ethyl silicate hasbeen studied. The duration and maximum temperature of ethyl silicate hydrolysis at different temperatures of the components have been determined. The formation of silica particles in the xerogel structure is shown. The influence of the ETS-40 hydrolysis on the particles size and concentration has been examined. The structure of the xerogel and the composition of the formed particles have been investigated using scanning electron microscopy (SEM) and energy dispersion analysis (EDX).","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73127013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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