Materials Focus最新文献_第5页

Assessment of KOH and NaOH Catalysed Biodiesel from Melon Seed Oil KOH和NaOH催化瓜子油制备生物柴油的研究

Materials Focus Pub Date : 2018-10-01 DOI: 10.1166/MAT.2018.1559

A. Ayoola, R. Babalola, M. Ojewumi, O. Fayomi

{"title":"Assessment of KOH and NaOH Catalysed Biodiesel from Melon Seed Oil","authors":"A. Ayoola, R. Babalola, M. Ojewumi, O. Fayomi","doi":"10.1166/MAT.2018.1559","DOIUrl":"https://doi.org/10.1166/MAT.2018.1559","url":null,"abstract":"In this study, the comparative analysis of KOH and NaOH catalysts (used separately and combined in equal proportion) during the trans-esterification of melon seed oil was investigated. The major effects and interactions of four variables (methanol/oil mole ratio, catalyst concentration, reaction temperature and reaction time) on the yield of biodiesel were studied. The results showed that, under the same experimental conditions, KOH catalyzed trans-esterification produced the highest biodiesel yield, followed by NaOH catalyzed process and then trans-esterification process involving a mixture of the two catalysts (in equal proportion). KOH catalysed process gave optimum conditions of 6.11 methanol/oil mole ratio, KOH concentration of 1.20 w/w% Oil, reaction temperature of 50 _C, reaction time of 83 minutes and optimum yield of 80.7%. NaOH catalysed process gave optimum conditions of 6.20 methanol/oil mole ratio, NaOH concentration of 1.19 w/w% Oil, reaction temperature of 52 _C, reaction time of 83 minutes and optimum yield of 77.9%. While the process involving the mixture of the two catalysts gave optimum conditions of 6.08 methanol/oil mole ratio, catalyst concentration of 1.05 w/w% Oil, reaction temperature of 56 _C, reaction time of 85 minutes and optimum yield of 76.2%. Material balance carried out on the three categories of analysis favoured KOH trans-esterification process and the suitability of the biodiesel yield models obtained in these three categories was justified by high R2 values of 0.9489, 0.9631 and 0.9605 respectively.","PeriodicalId":18271,"journal":{"name":"Materials Focus","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76281220","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

Enhanced Antibacterial, and Photocatalytic Properties of Bio-Mimetically Synthesized AgCl Nanostructures Using Various Proportions of Ocimum Leaf Extract 不同比例的茴香叶提取物增强生物模拟合成AgCl纳米结构的抗菌和光催化性能

Materials Focus Pub Date : 2018-10-01 DOI: 10.1166/MAT.2018.1566

G. Apsana, P. George

引用次数: 0

Influence of Gold Catalyst on the Growth of Titanium Nitride Nanowires 金催化剂对氮化钛纳米线生长的影响

Materials Focus Pub Date : 2018-10-01 DOI: 10.1166/MAT.2018.1571

Panupong Jaipan, C. Nannuri, N. R. Mucha, M. Singh, Zhigang Xu, A. Moatti, J. Narayan, S. Fialkova, R. Kotoka, S. Yarmolenko, O. Scott-Emuakpor, C. Binek, A. Kebede, Dhananjay Kumar

引用次数: 5

Fabrication and Characterization of a Water Selective Membrane to Enhance the Conversion of Esterification 提高酯化转化率的水选择性膜的制备与表征

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/MAT.2018.1536

F. U. Nigiz, Nazlı Yenihan, N. Hilmioglu

引用次数: 0

Atomic Order and Global Packing in Monoatomic Glasses Al, Cr, Co, Fe and Binary Metallic Glasses TiAl3 and CoAl3 by Molecular Dynamic Simulation Al, Cr, Co, Fe单原子玻璃和TiAl3和CoAl3二元金属玻璃中的原子有序和整体填充

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/mat.2018.1535

K. Sbiaai, M. Tahiri, A. Hassani, A. Fathi, A. Hasnaoui

引用次数: 1

Textural-Structural Properties and Reactivity Under Inert and Reducing Conditions of La2O3-Modified α-Al2O3 la2o3改性α-Al2O3在惰性和还原条件下的织构性能和反应性

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/mat.2018.1548

M. Ghelamallah, S. Kacimi, P. Granger

引用次数: 0

Performance of Electric Power of 3D Modeling Silicon Solar Cell with Grain Sizes 晶粒尺寸三维建模硅太阳能电池的电力性能

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/mat.2018.1550

Gokhan-Sahin

引用次数: 0

Design and Fabrication of GaAs Based MOSFET by Physical Vapor Deposition Method 物理气相沉积法设计与制备GaAs基MOSFET

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/MAT.2018.1528

Arkilang Challam, C. R. A. J. Chelliah, D. Nirmal, R. Swaminathan

引用次数: 4

Effects of Emission Characteristics on Elemental Composition of Selected PVC Ceiling Materials 辐射特性对选定PVC天花板材料元素组成的影响

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/MAT.2018.1544

J. Dirisu, S. Oyedepo, O. Fayomi, I. Okokpujie, A. Asere, J. Oyekunle, S. Afolalu, A. Abioye

{"title":"Effects of Emission Characteristics on Elemental Composition of Selected PVC Ceiling Materials","authors":"J. Dirisu, S. Oyedepo, O. Fayomi, I. Okokpujie, A. Asere, J. Oyekunle, S. Afolalu, A. Abioye","doi":"10.1166/MAT.2018.1544","DOIUrl":"https://doi.org/10.1166/MAT.2018.1544","url":null,"abstract":"This research work determined the emission characteristics and elemental composition of selected PVC ceiling \u0000materials common in Nigerian markets especially during service. This research work determined the emission \u0000characteristics and elemental composition of selected PVC ceiling materials common in Nigerian markets. The \u0000emission data and elemental structure gave insight to appraise their suitability as ceiling materials. Three PVC \u0000ceiling materials were used for this analysis: Nigerian made PVC, layered Composite PVC and white PVC. Rutherford Backscattering Spectrometry (RBS) was performed to obtain the elemental structure of the ceiling materials using Ion Beam Analysis facility. 0.05 kg of the samples were combusted in a controlled fire chamber and the gasses emitted; CO, SO2, NO, and volatile organic compounds (VOC) were identified using four gas analyzers. Elements were detected in total and data collected from the experiment were analyzed. Results showed that Nigerian made PVC has the highest total noxious gas among the three samples with value of 3732.5 ppm while layered composite PVC has the lowest among the PVCs with the value of 1477.5 ppm. The elemental make-ups of the samples influence their emission characteristics. The study established that PVC samples were noxious in terms of their emission characteristics due to the effects of their elemental basis.","PeriodicalId":18271,"journal":{"name":"Materials Focus","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84163866","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: 16

Thermo-Rheological Complexity of Novel Branch Polyethylene Synthesized by High Performance Bulky α-Diimine Nickel (II) Catalysts 高性能大体积α-二亚胺镍(II)催化剂合成新型支链聚乙烯的热流变复杂性

Materials Focus Pub Date : 2018-08-01 DOI: 10.1166/mat.2018.1545

S. Hashmi, Awan Zahoor, Z. Ghouri

引用次数: 1