World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering最新文献_第6页

Wetting Behavior of Reactive and Non–Reactive Wetting of Liquids on Metallic Substrates 液体在金属基体上的反应性和非反应性润湿行为

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2013-01-22 DOI: 10.5281/ZENODO.1063356

Pradeep Bhagawath, K. Prabhu, Satyanarayan

引用次数: 3

Static Recrystallization Behavior of Mg Alloy Single Crystals 镁合金单晶的静态再结晶行为

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2013-01-22 DOI: 10.5281/ZENODO.1083661

J. Kim, Jaeha Choi, T. Ha

{"title":"Static Recrystallization Behavior of Mg Alloy Single Crystals","authors":"J. Kim, Jaeha Choi, T. Ha","doi":"10.5281/ZENODO.1083661","DOIUrl":"https://doi.org/10.5281/ZENODO.1083661","url":null,"abstract":"Single crystals of Magnesium alloys such as pure Mg, Mg-1Zn-0.5Y, Mg-0.1Y, and Mg-0.1Ce alloys were successfully fabricated in this study by employing the modified Bridgman method. To determine the exact orientation of crystals, pole figure measurement using X-ray diffraction were carried out on each single crystal. Hardness and compression tests were conducted followed by subsequent recrysatllization annealing. Recrystallization kinetics of Mg alloy single crystals has been investigated. Fabricated single crystals were cut into rectangular shaped specimen and solution treated at 400C for 24 hrs, and then deformed in compression mode by 30% reduction. Annealing treatment for recrystallization has been conducted on these cold-rolled plates at temperatures of 300C for various times from 1 to 20 mins. The microstructure observation and hardness measurement conducted on the recrystallized specimens revealed that static recrystallization of ternary alloy single crystal was very slow, while recrystallization behavior of binary alloy single crystals appeared to be very fast. Keywords—Magnesium, Mg-rare earth alloys, compression test, static recrystallization, hardness.","PeriodicalId":23701,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering","volume":"6 3 1","pages":"42-46"},"PeriodicalIF":0.0,"publicationDate":"2013-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91195186","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

Starch Based Biofilms for Green Packaging 绿色包装用淀粉基生物膜

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2013-01-01 DOI: 10.1007/978-1-4614-6208-8_41

R. R. Ali, W. Rahman, Norazana Ibrahim, R. Kasmani

引用次数: 10

Microencapsulation of Ascorbic Acid by Spray Drying: Influence of Process Conditions 喷雾干燥法制备抗坏血酸微胶囊:工艺条件的影响

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2012-12-27 DOI: 10.5281/ZENODO.1085984

A. Nizori, L. Bui, D. Small

{"title":"Microencapsulation of Ascorbic Acid by Spray Drying: Influence of Process Conditions","authors":"A. Nizori, L. Bui, D. Small","doi":"10.5281/ZENODO.1085984","DOIUrl":"https://doi.org/10.5281/ZENODO.1085984","url":null,"abstract":"Ascorbic acid (AA), commonly known as vitamin C, is essential for normal functioning of the body and maintenance of metabolic integrity. Among its various roles are as an antioxidant, a cofactor in collagen formation and other reactions, as well as reducing physical stress and maintenance of the immune system. Recent collaborative research between the Australian Defence Science and Technology Organisation (DSTO) in Scottsdale, Tasmania and RMIT University has sought to overcome the problems arising from the inherent instability of ascorbic acid during processing and storage of foods. The recent work has demonstrated the potential of microencapsulation by spray drying as a means to enhance retention. The purpose of this current study has been focused upon the influence of spray drying conditions on the properties of encapsulated ascorbic acid. The process was carried out according to a central composite design. Independent variables were: inlet temperature (80-120° C) and feed flow rate (7-14 mL/minute). Process yield, ascorbic acid loss, moisture content, water activity and particle size distribution were analysed as responses. The results have demonstrated the potential of microencapsulation by spray drying as a means to enhance retention. Vitamin retention, moisture content, water activity and process yield were influenced positively by inlet air temperature and negatively by feed flow rate.","PeriodicalId":23701,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering","volume":"13 1","pages":"1123-1127"},"PeriodicalIF":0.0,"publicationDate":"2012-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87112594","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: 4

Hydrogen Rich Fuel Gas Production from 2- Propanol Using Pt/Al2O3 and Ni/Al2O3 Catalysts in Supercritical Water Pt/Al2O3和Ni/Al2O3催化剂在超临界水中制备2-丙醇富氢燃料气

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2012-11-23 DOI: 10.5281/ZENODO.1056288

Yağmur Karakuş, Fatih Aynacı, Ekin Kıpçak, M. Akgün

{"title":"Hydrogen Rich Fuel Gas Production from 2- Propanol Using Pt/Al2O3 and Ni/Al2O3 Catalysts in Supercritical Water","authors":"Yağmur Karakuş, Fatih Aynacı, Ekin Kıpçak, M. Akgün","doi":"10.5281/ZENODO.1056288","DOIUrl":"https://doi.org/10.5281/ZENODO.1056288","url":null,"abstract":"Hydrogen is an important chemical in many industries and it is expected to become one of the major fuels for energy generation in the future. Unfortunately, hydrogen does not exist in its elemental form in nature and therefore has to be produced from hydrocarbons, hydrogen-containing compounds or water. Above its critical point (374.8C and 22.1MPa), water has lower density and viscosity, and a higher heat capacity than those of ambient water. Mass transfer in supercritical water (SCW) is enhanced due to its increased diffusivity and transport ability. The reduced dielectric constant makes supercritical water a better solvent for organic compounds and gases. Hence, due to the aforementioned desirable properties, there is a growing interest toward studies regarding the gasification of organic matter containing biomass or model biomass solutions in supercritical water. In this study, hydrogen and biofuel production by the catalytic gasification of 2-Propanol in supercritical conditions of water was investigated. Pt/Al2O3and Ni/Al2O3were the catalysts used in the gasification reactions. All of the experiments were performed under a constant pressure of 25MPa. The effects of five reaction temperatures (400, 450, 500, 550 and 600°C) and five reaction times (10, 15, 20, 25 and 30 s) on the gasification yield and flammable component content were investigated. Keywords—2-Propanol, Gasification, Ni/Al2O3, Pt/Al2O3, Supercritical water.","PeriodicalId":23701,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering","volume":"29 1","pages":"1049-1053"},"PeriodicalIF":0.0,"publicationDate":"2012-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87250831","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

Effect Of Heat Treatment On The Phase Formation Of La0.6Sr0.4Coo3-Α 热处理对La0.6Sr0.4Coo3相形成的影响-Α

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2012-10-23 DOI: 10.5281/ZENODO.1063121

A. Samat, N. Abdullah, M. Ishak, N. Osman

引用次数: 3

Effect of Biomass Feedstocks on the Production of Hydrogenated Biodiesel 生物质原料对氢化生物柴油生产的影响

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2012-04-26 DOI: 10.3850/978-981-07-1445-1_448

Panatcha Bovornseripatai, S. Jongpatiwut, S. Osuwan, S. Butnark

{"title":"Effect of Biomass Feedstocks on the Production of Hydrogenated Biodiesel","authors":"Panatcha Bovornseripatai, S. Jongpatiwut, S. Osuwan, S. Butnark","doi":"10.3850/978-981-07-1445-1_448","DOIUrl":"https://doi.org/10.3850/978-981-07-1445-1_448","url":null,"abstract":"Hydrogenated biodiesel is one of the most promising renewable fuels. It has many advantages over conventional biodiesel, including higher cetane number, higher heating valu e, lower viscosity, and lower corrosiveness due to its absen ce of oxygen. From previous work, Pd/TiO2 gave high conversion and selectivity in hydrogenated biodiesel. In this work, the effect of biomass feedstocks (i.e. beef fat, chicken fat, pork fat, and jatropha oil) on the production of hydrogenated biodiesel over Pd/TiO2 has been studied. Biomass feedstocks were analyzed by ICP-OES (inductively coupled plasma optical emission spectrometry) to identify the cont ent of impurities (i.e. P, K, Ca, Na, and Mg). The deoxygenation cata lyst, Pd/TiO2, was prepared by incipient wetness impregnation (IWI) and tested in a continuous flow packed-bed reactor at 500 psig, 325 °C, H2/feed molar ratio of 30, and LHSV of 4 h -1 for its catalytic activity and selectivity in hydrodeoxygenation. All feedstocks g ave high selectivity in diesel specification range hydrocarb ons and the main hydrocarbons were n-pentadecane (n-C15) and n-heptadecane (n- C17), resulting from the decarbonylation/decarboxyl ation reaction. Intermediates such as oleic acid, stearic acid, pal mitic acid, and esters were also detected in minor amount. The conversion of triglycerides in jatropha oil is higher than those of chicken fat, pork fat, and beef fat, respectively. The higher concentration of meta l impurities in feedstock, the lower conversion of feedstock.","PeriodicalId":23701,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering","volume":"9 1","pages":"265-269"},"PeriodicalIF":0.0,"publicationDate":"2012-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82481560","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: 4

Evaluation of Solid Phase Micro-extraction with Standard Testing Method for Formaldehyde Determination 固相微萃取法测定甲醛标准试验方法的评价

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2012-02-29 DOI: 10.5281/zenodo.1061026

Y. L. Yung, K. Lo

引用次数: 0

Cfd Simulation Of So2 Removal From Gas Mixtures Using Ceramic Membranes 陶瓷膜去除混合气体中二氧化硫的Cfd模拟

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2011-10-23 DOI: 10.5281/ZENODO.1056327

A. Marjani, S. Shirazian

引用次数: 1

Ozone Decomposition over Silver-Loaded Perlite 含银珍珠岩上的臭氧分解

World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Pub Date : 2011-08-01 DOI: 10.5281/ZENODO.1077108

K. Genov, V. Georgiev, T. Batakliev, Dipak K. Sarker

引用次数: 7