Rasayan Journal of Chemistry最新文献_第6页

TECHNOLOGY FOR THE PRODUCTION OF COMPOSITE POLYMER MATERIALS BASED ON RECYCLED POLYPROPYLENE AND POLYETHYLENE TEREPHTHALATE WITH THE ADDITION OF MODIFIED SODIUM MONTMORILLONITE 以再生聚丙烯和聚对苯二甲酸乙二醇酯为原料，添加改性蒙脱土钠生产复合高分子材料的技术

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1618094

А.Sh. Kydyralyeva, O. K. Beisenbayev, A.E. Ortaev, B. Smailov, K.S. Nadyrov, A.B. Issa, A. Ibadullaev

引用次数: 2

THE MESOPOROUS BIOSILICA CATALYST FROM ANDONG BAMBOO LEAF FOR DIRECT-PYROLYSIS REACTION 安东竹叶中介孔生物二氧化硅催化剂的直接热解反应

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1618126

L. Efiyanti, N. Saputra, D. A. Indrawan, I. Winarni, B. Pranoto, N. Hastuti, Z. Fadhlulloh, Y. Rahayuningsih, S. Wibowo, S. Darmawan, Yuniawati, Gusmailina, S. Komarayati, D. Hendra, G. Pari

{"title":"THE MESOPOROUS BIOSILICA CATALYST FROM ANDONG BAMBOO LEAF FOR DIRECT-PYROLYSIS REACTION","authors":"L. Efiyanti, N. Saputra, D. A. Indrawan, I. Winarni, B. Pranoto, N. Hastuti, Z. Fadhlulloh, Y. Rahayuningsih, S. Wibowo, S. Darmawan, Yuniawati, Gusmailina, S. Komarayati, D. Hendra, G. Pari","doi":"10.31788/rjc.2023.1618126","DOIUrl":"https://doi.org/10.31788/rjc.2023.1618126","url":null,"abstract":"Silica is a functional material with broad benefits, including as a catalyst. It is essential to substitute synthetic silica with natural silica to support green technology and economic development. The silica extraction process from bamboo leaf waste was carried out using an acid-base solution and a cetyltrimethylammonium bromide (CTAB) template structure to get mesoporous biosilica. This mesoporous biosilica was then applied as a biocatalyst for α-cellulose direct pyrolysis. Biosilica was characterized using various analyses including Fourier Transform Infrared Spectroscopy (FTIR), Surface Area Analyzer (SAA), Scanning Electron Microscope (SEM), gravimetric methods, and applications to the cracking process using Pyrolysis Gas Chromatography Mass Spectrometry (Py-GCMS). The CTAB addition is divided into three variations, namely 0.05:1, 0.1:1, and 0.2:1. The data found that the highest yield was produced in the CTAB biosilica 0.2:1, and the silica content in the bamboo ash and CTAB biosilica sample was 60% and 90.5- 93.6%, respectively. The surface acidity of the biosilica ranged from 1.97 and 2.1 mmol/g. The essential groups in the biosilica formed are hydroxyl, silanol, and siloxane groups, with the morphology of the silica being observed to be irregular in shape, forming aggregates like coral. The surface area of biosilica with the ratio of 0.05:1, 0.1:1, and 0.2:1 was 177.068 m2 /g, 661.166 m2 /g, and 684.852 m2 /g, respectively, with a pore size distribution following the mesoporous class. The α-cellulose cracking using py-GCMS with a biosilica catalyst at CTAB variations of 0.05:1, 0.1:1, and 0.2:1 yielded a hydrocarbon content of 44.88%; 61.6%; and 30.4%.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69410538","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

THE EFFECT OF SHAPE AND SIZE OF SILVER NANOPARTICLES ON ELECTROCHEMICAL ACTIVITY OF SENSOR TO HYDROGEN PEROXIDE 银纳米粒子的形状和大小对传感器对过氧化氢电化学活性的影响

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628286

D. Perevezentseva, E. Gorchakov, E. Vaytulevich, Vladimir Bimatov

引用次数: 0

THE ENERGY OF ACTIVATION FOR ACCELERATORS AND STABILIZERS IN ELECTROLESS COPPER COATING 化学镀铜中促进剂和稳定剂的活化能

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628292

S. Rekha, S. Jothilakshmi, A. Kalicharan, R. Ranjani

引用次数: 0

PRODUCTION OF FERROALLOYS, CALCIUM CARBIDE, AND PHOSPHORUS FROM HIGH-SILICON PHOSPHORITE 从高硅磷矿中生产铁合金、电石和磷

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628310

V.M. Shevko, R.A. Uteeva, A.B. Badikova, G.E. Karataeva, G.A. Bitanova

{"title":"PRODUCTION OF FERROALLOYS, CALCIUM CARBIDE, AND PHOSPHORUS FROM HIGH-SILICON PHOSPHORITE","authors":"V.M. Shevko, R.A. Uteeva, A.B. Badikova, G.E. Karataeva, G.A. Bitanova","doi":"10.31788/rjc.2023.1628310","DOIUrl":"https://doi.org/10.31788/rjc.2023.1628310","url":null,"abstract":"The article provides information on the interaction of Chilisai phosphorite with carbon, coke, and iron with the production of ferroalloy and calcium carbide and the extraction of phosphorus into gas. Research is conducted using computer thermodynamic modeling, mathematical planning of experiments, and electric smelting of phosphorites in an arc electric furnace. It is found that under equilibrium conditions the interaction occurs with the formation of iron silicides, calcium, silicon carbides, calcium, elemental silicon, aluminum, calcium, silicon oxide (ІІ), gaseous phosphorus (P4, P2), and iron phosphides. An increase in the amount of iron at 1,500-2,000oC increases the degree of extraction of silicon in the alloy but decreases the extraction of calcium in the calcium carbide, the concentration of silicon in the alloy, and the amount of calcium carbide. In the temperature range of 1,900-2,000oC in the presence of 16.8-19.8% of iron, phosphorus completely converts to gas, and there forms an alloy with 45-47.8% of Si and 1.6- 1.9% of Al and calcium carbide in the amount of 150-215 dm3 /kg (with the extraction of 60-63.6% of Si into the alloy and 50-56.4% of Ca into calcium carbide). Electric smelting of phosphorite in an arc furnace produces ferrosilicon of grade FS45 (40-44.7% of Si) with the extraction of 73.8% of silicone into it, as well as calcium carbide up to the second grade in the amount of 200-252 dm3 /kg. Phosphorus is almost completely (99.0-99.4%) reduced during electric smelting and converted into the gas phase.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69411401","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

MICROWAVE-ASSISTED SYNTHESIS OF SCHIFF BASE AND MIXED LIGAND COMPLEXES OF Cr(III): COMPARISON WITH CONVENTIONAL METHOD AND ANTIMICROBIAL STUDIES 微波辅助合成Cr(III)的希夫碱和混合配体配合物:与常规方法的比较和抗菌研究

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628228

Shobhana Sharma, Poonam Yadav, Seema, Suman Kumari, M. Ranka

引用次数: 1

MODIFICATION NANO-SIZE OF ZINC OXIDE (ZnO-NS) WITH POLYETHYLENE GLYCOL AND APPLICATION AS ANTIMICROBIAL 聚乙二醇改性纳米氧化锌及其抗菌应用

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1628232

Y. Rilda, F. Rivaldo, Admi, Refinel, Armaini, A. Agustien, H. Pardi

{"title":"MODIFICATION NANO-SIZE OF ZINC OXIDE (ZnO-NS) WITH POLYETHYLENE GLYCOL AND APPLICATION AS ANTIMICROBIAL","authors":"Y. Rilda, F. Rivaldo, Admi, Refinel, Armaini, A. Agustien, H. Pardi","doi":"10.31788/rjc.2023.1628232","DOIUrl":"https://doi.org/10.31788/rjc.2023.1628232","url":null,"abstract":"Sol-gel is a simple method used to synthesize nano-size ZnO (ZnO-NS) in many applications. It acts as an antimicrobial agent for Escherichia coli and Aspergillus niger infections. The nano-size and patterned nanorods structure of ZnO enhances anti-microbial properties. This study used Polyethylene Glycol (PEG-6000) polymer compounds with variations in their 3, 5, and 10% compositions as templates for the formation of the nanorods. The morphology of the ZnO-NS produced determined the increase in anti-microbial activity. Furthermore, those generated from 5% PEG composition (ZnO/PEG-5) have the smallest size with the greatest anti-microbial activity on inhibition zones against E. coli and A. niger, each of 8.5-10.5 mm. There are morphological differences in each variable in the homogeneity distribution level of the spherical and rod dimension patterns of ZnO-NS. This is based on characterization with UV-VIS-DRS and Fourier-Transform infrared (FT-IR) for the analysis of Zn-O interactions at wave number 500-550 cm-1. Field Emission Scanning Electron Microscopy-Dispersive Scanning Electron Microscope (FE-SEM) and Energy dispersive X-ray spectroscopy (EDX) was used for dimensional pattern analysis, while X-ray diffraction (XRD) was applied for hexagonal wurtzite ZnO structures following the ICSD-65122 standard.","PeriodicalId":21063,"journal":{"name":"Rasayan Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69411438","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

EFFECTIVENESS OF CACAO FRUIT PEEL EXTRACT (Theobroma Cacao L.) AS AN ORGANIC INHIBITOR ON CORROSION OF IRON NAILS IN 3% NaCl MEDIUM 可可果皮提取物的有效性作为铁钉在3% NaCl介质中腐蚀的有机缓蚀剂

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638398

None T. Santoso, M. R. Jura, None S. Rahmawati, None Supriadi, S. Y. H. Dapili, None Nadrun

引用次数: 0

HYPERBRANCHED ALKYD RESINS OBTAINED FROM A HYPERBRANCHED POLYESTER POLYOL OF THE FIFTH GENERATION AND TALL OIL FATTY ACID 由第五代超支化聚酯多元醇和塔尔油脂肪酸合成的超支化醇酸树脂

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638351

E.A. Murillo, A.M. Raba

引用次数: 0

DEGRADATION OF NATURAL RUBBER INTO AROMATIC COMPOUNDS BY THE PYROLYSIS METHOD 热解法降解天然橡胶成芳香族化合物

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI: 10.31788/rjc.2023.1638284

None S. Selpiana, None S. Haryati, None M.D. Bustan, None L. Muqoffa, None M. Najib

引用次数: 0