检索结果-南通市图书馆

人类环境杂志 1997年第6期26卷 343-350页

作者： tora skodvin JanS.Fuglestvedt 卢显富奥斯陆大学 CICERO

本文讨论气候公约中蕴含的综合性这一概念,重点放在政治与科学的考虑依据。必须把这两者作为说明这种综合解决途径是提高气候规范效率的有利手段。本文还讨论了综合解决途径可作为促进气候规范的协商与实施办法,并提出了一个可供使用的... 详细信息

本文讨论气候公约中蕴含的综合性这一概念,重点放在政治与科学的考虑依据。必须把这两者作为说明这种综合解决途径是提高气候规范效率的有利手段。本文还讨论了综合解决途径可作为促进气候规范的协商与实施办法,并提出了一个可供使用的定义。在气候规范中应用综合途径的一个关键问题,是用于对比气体的各种方法如何实行?这一问题是根据全球增暖趋势(GWPs)来讨论的。在考虑最主要的温室气体时,我们认为,在没有更好的方案时,可以利用GWPs作为决策的初步手段,直至制定出更好的替代方法。需要强调指出,选择时间基准具有重要的生态及政治意义,必须加以考虑。

关键词：气候变化解决途径综合解决途径 GWPS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characterization of carbon black modified by maleic acid

引用

Frontiers of Materials Science 2013年第3期7卷 302-307页

作者： Vijayshankar ASOKAN Pawel KOSINSKI Tore skodvin Velaug MYRSETH Department of Physics and Technology The University of Bergen Allegaten 55 Bergen 5007 Norway Carbontech Holding AS Conrad Mohrsvei 9C Bergen 5068 Norway Department of Chemistry The University of Bergen Allegaten 41 Bergen 5007 Norway

We present here a method for modifying the surface of carbon black （CB） using a simple heat treatment in the presence of a carboxylic acid as well as water or ethylene glycol as a solvent. CB was mixed with maleic acid and either water or ethylene glycol, and heated at 250℃. Unlike the traditional surface modification processes which use heat treatment of carbon with mineral acids the present modification method using a carboxylic acid proved to be simple and time efficient. CB from two different vendors was used, and the modified samples were characterized by TGA, BET surface area measurement, XRD, particle size and zeta potential measurements, and FTIR. It was found that several material properties, including thermal stability and surface area, of the modified CB are significantly altered relative to the parental carbon samples. This method provides a rapid and simple route to tailor new materials with desired properties.

关键词： carbon black (CB) carboxylic acid ethylene glycol thermal stability surface area

来源：

维普期刊数据库

同方期刊数据库评论