神马作文网英语翻译In this study the preparation of ultrafine powder of Bi2
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/11/19 09:56:52
英语翻译
In this study the preparation of ultrafine powder of Bi2S3 by a reaction between bismuth octanoate and sulfur in organic solvent such as high boiling alcanes is reported.The first step was the preparation of bismuth octanoate.Bi(NO3)3⋅5H2O and octanic acid were used as the starting materials.The acid was reagent and solvent at the same time and was added in twice excess.After boiling the mixture of starting materials during 1 hour,the product was salted out by ethylacetate.The precipitate was filtered and dried in exxicator at room temperature.The second step was the synthesis of bismuth sulfide by boiling of bismuth octanoate and sulfur in decane during 2.5 hours.The dark grey precipitate was filtered and washed with hexane several times to remove the impurites.The product was dried in exxicator at room temperature.
In this study the preparation of ultrafine powder of Bi2S3 by a reaction between bismuth octanoate and sulfur in organic solvent such as high boiling alcanes is reported.The first step was the preparation of bismuth octanoate.Bi(NO3)3⋅5H2O and octanic acid were used as the starting materials.The acid was reagent and solvent at the same time and was added in twice excess.After boiling the mixture of starting materials during 1 hour,the product was salted out by ethylacetate.The precipitate was filtered and dried in exxicator at room temperature.The second step was the synthesis of bismuth sulfide by boiling of bismuth octanoate and sulfur in decane during 2.5 hours.The dark grey precipitate was filtered and washed with hexane several times to remove the impurites.The product was dried in exxicator at room temperature.
这项研究的超细粉末的反应备Bi2S3辛酸和硫铋等有机溶剂沸腾alcanes高报.第一步是准备铋辛酸.毕(硝酸)3千瓦及octanic锡酸作为原料.酸试剂和溶剂的在同一时间、亮色超过两次.原料混合后煮沸1小时期间,该产品是由腌乙酸乙酯.被沉淀、过滤晒干exxicator在室温第二步是合成的硫化铋铋沸腾辛酸和硫癸在2.5小时.暗灰色沉淀、过滤被己烷洗涤数次以清除impurites.该产品是在exxicator室温干燥
英语翻译the smell of preparation
英语翻译The preparation of financial statements in conformity wi
Quality of raw materials used in the preparation of morphine
英语翻译The study,published in this month's issue of the America
英语翻译It also prohibits preparation of the material in order t
英语翻译dissolve each contents of the small bag glue powder in 5
英语翻译In this study we report the results of pilot plantstudie
英语翻译3.7.Anti-tumor activity of ARP in vitroIn this study,the
英语翻译This study aimed the characterization of the films caste
英语翻译“The findings of this study demonstrate that the privati
英语翻译the intentional preparation of misleading financial stat
英语翻译financial accounting concerns the preparation of reports