Emerging Materials Research最新文献_第7页

An investigation on the corrosion in the dehumidification bubble caps in the gas refinery 天然气精炼厂除湿气泡帽腐蚀的研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-01-01 DOI: 10.1680/jemmr.22.00227

H. Mohammadzadeh, R. Jafari, Abolfazl Gheysvand

{"title":"An investigation on the corrosion in the dehumidification bubble caps in the gas refinery","authors":"H. Mohammadzadeh, R. Jafari, Abolfazl Gheysvand","doi":"10.1680/jemmr.22.00227","DOIUrl":"https://doi.org/10.1680/jemmr.22.00227","url":null,"abstract":"One of the severe challenges in the oil, gas, and petrochemical industry is associated with reducing the costs of corrosion damages by removing the oil fluids’ moisture, and humidity in the facilities. As an essential component of moisture absorption towers in the dehumidification section is the bubble cap, which loses its efficiency in a short time due to continuous contact with steam. In the present work, the causes of the destruction of a piece of bubble cap are investigated thoroughly employing visual and microstructural observation, chemical composition study through quantometer, X-ray spectroscopy (EDS) and XRD assessments, and also the corrosion behavior study by polarization and electrochemical impedance spectrometry (EIS) analysis. The mechanism and type of corrosion occurred to the bubble cap and its capability against the corrosion were assessed. The results showed that the corrosion products after service were Fe3O4, Fe2O3, Fe(OH)3, and FeCO3, which declined the microhardness from 121.3 to 99.3 Hv. The corrosion rate was found to be 0.03116 mm/y in the saline solution. The poor performance of the material against corrosion were attributed to the casting defects, and the ineffective microstructural phases, formed due to the deficient alloying elements. According to the results, some recommendations and solutions, as effective preventive ways, have been proposed to hinder corrosion, and lead to the higher durability and the lower replacement costs.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67477682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of polyetherimide–mixed conductor membranes for hydrogen separation from methane 聚醚酰亚胺混合导体甲烷氢分离膜的研制

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-01-01 DOI: 10.1680/jemmr.21.00131

Y. Alqaheem, Abdulwahab Alhindi

引用次数: 1

Static and dynamic mechanical analysis of e-glass polyester composite used in mass transit system 公共交通系统用e-玻璃聚酯复合材料静、动态力学分析

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-01-01 DOI: 10.1680/jemmr.22.00092

S. Ojha, H. Bisaria, S. Mohanty, K. Kanny

{"title":"Static and dynamic mechanical analysis of e-glass polyester composite used in mass transit system","authors":"S. Ojha, H. Bisaria, S. Mohanty, K. Kanny","doi":"10.1680/jemmr.22.00092","DOIUrl":"https://doi.org/10.1680/jemmr.22.00092","url":null,"abstract":"Composite materials have distinct properties such as a high strength-to-weight ratio, high corrosion resistance, a high modulus-to-weight ratio, and wear resistance. The potential, strong mechanical properties and lower cost properties of E-glass fibre motivated us for this work. Tensile, flexural, and Izod impact tests were used in the current study to conduct a static analysis of E-glass reinforced isophthalic polyester composite and E-glass reinforced general purpose (GP) or orthophthalic polyester composite. Thermal-mechanical behaviour was investigated using thermogravimetric analysis and dynamic mechanical analysis tests. Furthermore, the surface morphology of the tested composites was examined using a scanning electron microscope. When compared to E-glass reinforced GP polyester composite, E-glass/isophthalic polyester composite demonstrated superior flexural properties and thermal stability. However, the tensile and impact properties of E-glass/GP polyester composite were found to be higher than those of E-glass/isophthalic polyester composite. SEM images show fibre pull-out, matrix cracking, and fibre breakage, among other things. The loss modulus and damping values for E-glass reinforced GP polyester composite were found to be greater than those for E-glass reinforced isophthalic polyester composite. The current composite can be used in marine applications, particularly the hull: frame or body of the boat.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67477668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Growth characteristics of shallots and absorption of Mg ions dissolved from serpentinites 葱的生长特性及对蛇纹石中镁离子的吸收

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00101

F. Hung

{"title":"Growth characteristics of shallots and absorption of Mg ions dissolved from serpentinites","authors":"F. Hung","doi":"10.1680/jemmr.22.00101","DOIUrl":"https://doi.org/10.1680/jemmr.22.00101","url":null,"abstract":"Magnesium-rich water or food is highly beneficial to human health. Shallots are used in cooking, have simple growth conditions; and have a short growth cycle. In this study, natural serpentinite was ground into powder (particle size: 50-200 nm), heated at high temperatures (400°C and 800°C), and then dissolved in water of different temperatures (25°C, 60°C, and 100°C) to prepare natural magnesium-containing water. Experimental results indicated that natural serpentine minerals contain magnesium silicate, which has ionic properties and high electrical conductivity. The dissolution of magnesium ions increased with the temperature of the distilled water. The heat treatment powder had a higher crystallinity; however, the dissolution of magnesium was lower for the solution containing the powder heated to 800°C than for the solution containing the powder heated to 400°C. The 400°C powder exhibited favorable crystallinity and a low level of impurities, and its interlayer spacing did not change. The shallots grown with natural magnesium-containing water (magnesium shallots) had a high concentration of magnesium ions in their white and green parts. Such shallots can be provided by food platforms, and eating such shallots can help one meet the daily magnesium intake requirement of 300 mg/L for humans.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41824068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on mechanical and tribological properties of C/C composites by CVI and PIP 用CVI和PIP研究C/C复合材料的力学和摩擦学性能

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00089

Fei Li, Yuqin Ma, Wei Xu, Wen Zhu, G. Wang, Yi Xu, Haiyin Guo, Yatao Li

引用次数: 1

Antioxidant and enzyme inhibition activities of Spartium junceum with HPLC-DAD profiling 用HPLC-DAD分析结米草的抗氧化和酶抑制活性

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00016

Nuraniye Eruygur, F. Ayaz, H. Ayyildiz, Y. Bağcı

{"title":"Antioxidant and enzyme inhibition activities of Spartium junceum with HPLC-DAD profiling","authors":"Nuraniye Eruygur, F. Ayaz, H. Ayyildiz, Y. Bağcı","doi":"10.1680/jemmr.22.00016","DOIUrl":"https://doi.org/10.1680/jemmr.22.00016","url":null,"abstract":"Spartium junceum L., a Fabaceae plant, is commonly known as Spanish broom and cultivated in the Mediterranean regions. This study aims to investigate the chemical profile, antioxidant and different enzyme inhibitory activities of methanol, ethanol and aqueous extracts obtained from flowers and stems of S. junceum. Also, the phenolic composition was analyzed by HPLC-DAD. Aqueous extract of stems showed the highest (63.94 mg GAE/g) phenolic content, while aqueous extract of stems contained the highest (61.33 mg QE/g) flavonoid content. The stem water extract demonstrated highest DPPH radical scavenging (IC50: 2327 µg/mL) activity, while stem water extract exhibited strong ABTS radical scavenging activity (IC50: 91.80 ± 0.90 µg/mL). The tested extracts differ greatly in terms of enzyme inhibition activity. The stem water extract showed highest Anti-acetylcholinesterase activity (IC50: 46.69 ± 1.66 µg/mL), however stem methanol extract exhibited strong anti-butyrylcholinesterase activity (IC50: 76.39 ± 0.27 µg/mL). The flower methanol extract was most active against α-glucosidase (IC50: 296.7 ± 3.77 µg/mL) enzyme. All extracts showed the least activity against α-amylase and tyrosinase enzymes. When the biological activity results are evaluated, it provides the evidence for the bioactivity-guided isolation studies on the active extracts of this plant.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42334736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The preparation of ZnO-based dye-sensitized solar cells using Rhus, Linaria and Punica 利用红属植物、林荫属植物和Punica制备zno基染料敏化太阳能电池

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00073

N. Balpınar

{"title":"The preparation of ZnO-based dye-sensitized solar cells using Rhus, Linaria and Punica","authors":"N. Balpınar","doi":"10.1680/jemmr.22.00073","DOIUrl":"https://doi.org/10.1680/jemmr.22.00073","url":null,"abstract":"This paper focuses on fabricating ZnO-based dye-sensitized solar cells (DSSCs) utilizing three types of dyes derived from Rhus, Linaria and Punica flowers. The ZnO thin films were prepared on tin-doped indium oxide (ITO) coated glass substrates at 70 °C according to successive ionic layer adsorption and reaction (SILAR) method. Organic sensitizers were extracted from Rhus, Linaria and Punica flowers using ethanol solvent. The fabricated solar cells were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), UV-vis spectroscopy and fourier transformation infrared (FTIR) techniques. The maximum photovoltaic values were obtained from ZnO/Linaria-based DSSC which exhibits current density (J sc ) of 0.328 mA/cm−2, open-circuit voltage (V oc ) of 1 V, fill factor (FF) of 64% and energy conversion efficiency (η) of 0.210% having the minimum thickness of 1.381 μm among all the DSSCs studied in this work, though. Energy dispersive X-ray spectrometry (EDS) analysis indicated that the weight contribution of oxygen for Linaria DSSC is 53.30%, and this value is higher than Rhus and Punica DSSCs. The results suggest that Linaria dye-sensitizer can be a good candidate for minimizing the thickness of the photoelectrode films and improving the performance of DSSCs.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45686348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of dopants in buffer layer on CZTS solar cell performance 缓冲层中掺杂剂对CZTS太阳能电池性能的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00032

P. K. Dakua, D. Panda

引用次数: 3

Influence of nano-TiO2 on the chloride diffusivity of concrete 纳米TiO2对混凝土氯离子扩散率的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00056

Garima Rawat, S. Gandhi, Y. Murthy

引用次数: 2

Photocatalytic degradation of methyl orange based on manganese substituted bismuth ferrite nanoparticles 锰取代铋铁氧体纳米颗粒光催化降解甲基橙

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-12-01 DOI: 10.1680/jemmr.22.00037

A. Umar, S. Ruby, S. Inbanathan, D. Rani Rosaline, Rajesh Kumar, Hasan Algadi, A. Ibrahim, P. Show, S. Baskoutas

{"title":"Photocatalytic degradation of methyl orange based on manganese substituted bismuth ferrite nanoparticles","authors":"A. Umar, S. Ruby, S. Inbanathan, D. Rani Rosaline, Rajesh Kumar, Hasan Algadi, A. Ibrahim, P. Show, S. Baskoutas","doi":"10.1680/jemmr.22.00037","DOIUrl":"https://doi.org/10.1680/jemmr.22.00037","url":null,"abstract":"Herein, a microwave-assisted approach for the synthesis of Mn2+ doped bismuth ferrite (BMFO) nanoparticles is presented. Various techniques were used to examine the structure, morphology, and electrical characteristics of the as-synthesized BMFO nanoparticles. XRD and Raman analysis revealed a rhombohedral distorted perovskite structure having space group R3c. The crystallite size of BMFO was found to be 18.77 nm. SEM studies of the BFMO nanoparticles showed the highly agglomerated nature of the particles. The ultraviolet-diffuse reflectance spectrum of the BMFO revealed a bang gap of 1.56 eV which was smaller than the bandgap of pure BFO (2.41 eV). Methyl orange (ᯰMO) dye degradation behavior of the synthesized BMFO was examined for the dye sample solution in the presence of solar radiation. After 120 min of irradiation resulted in 81.08% photodegradation of MO dye. Kinetic studies demonstrated a pseudo-first-order rate mechanism for the photodegradation of the MO dye. The corresponding coefficient of determinant R2 and t1/2 were 0.92864 and 63.0 min, respectively. Finally, a methodology for the degradation of MO dye using BMFO was proposed.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"32 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67478001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0