针对某炼厂酮苯脱蜡装置原料油(减三线)中酸性物质组成特殊(对装置产生严重的腐蚀)的情况,采用碱醇法提取其中的酸性物质,借助负离子电喷雾-傅里叶变换离子回旋共振质谱(negative-ion ESI FT-ICR MS)研究其酸性组分的组成及分布,并与工...针对某炼厂酮苯脱蜡装置原料油(减三线)中酸性物质组成特殊(对装置产生严重的腐蚀)的情况,采用碱醇法提取其中的酸性物质,借助负离子电喷雾-傅里叶变换离子回旋共振质谱(negative-ion ESI FT-ICR MS)研究其酸性组分的组成及分布,并与工业级脱脂环酸进行比较,从分子层面上揭示了其特殊之处。Negative-ion ESI FT-ICR MS结果表明,减三线酸性化合物主要的特点为O2类化合物中脂肪酸(Z=0)占明显优势,缩合度较大的Z=-8和Z=-10的O2类化合物中有些碳数的物质相对丰度也比较大,碳数分布有两个中心;O1类杂原子化合物的相对丰度仅次于O2类化合物,且大大高出其他类杂原子化合物,O1类化合物中,烷基酚类化合物占绝对优势。减三线酸性化合物的特殊组成将对进一步探究腐蚀机理和寻求解决设备腐蚀的途径有重要的指导意义。展开更多
1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily hi...1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily high concentration of Ir in K/T boundarydeposits. Since then, studies have indicated that the iridium anomaly distributeswidely in the sections of this age over the world. However, these studies focused onthe abundance of Ir. Little attention was paid to other platinum group metals (PGM).Analyzing the abundance of Ru in boundary samples is very difficult because of展开更多
文摘针对某炼厂酮苯脱蜡装置原料油(减三线)中酸性物质组成特殊(对装置产生严重的腐蚀)的情况,采用碱醇法提取其中的酸性物质,借助负离子电喷雾-傅里叶变换离子回旋共振质谱(negative-ion ESI FT-ICR MS)研究其酸性组分的组成及分布,并与工业级脱脂环酸进行比较,从分子层面上揭示了其特殊之处。Negative-ion ESI FT-ICR MS结果表明,减三线酸性化合物主要的特点为O2类化合物中脂肪酸(Z=0)占明显优势,缩合度较大的Z=-8和Z=-10的O2类化合物中有些碳数的物质相对丰度也比较大,碳数分布有两个中心;O1类杂原子化合物的相对丰度仅次于O2类化合物,且大大高出其他类杂原子化合物,O1类化合物中,烷基酚类化合物占绝对优势。减三线酸性化合物的特殊组成将对进一步探究腐蚀机理和寻求解决设备腐蚀的途径有重要的指导意义。
文摘1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily high concentration of Ir in K/T boundarydeposits. Since then, studies have indicated that the iridium anomaly distributeswidely in the sections of this age over the world. However, these studies focused onthe abundance of Ir. Little attention was paid to other platinum group metals (PGM).Analyzing the abundance of Ru in boundary samples is very difficult because of
