论文部分内容阅读
氨合成铁催化剂主要成分是Fe_3O_4,助剂总量约3～6%。已经证明,铝主要存在于Fe_3O_4晶粒中,少量在边界上;钙主要存在于Fe_3O_4晶粒的边介上,少量在晶粒中;钾主要存在于Fe_3O_4晶粒的边介上。本工作得到了与上述结果不相一致的信息。一、实验部分:样品为A110—5Q型,主要成分Fe_3O_4,铁比值(Fe~(++)/Fe~(+++))为0.55—0.75, 助剂总量大约4%。二、实验结果:照片(1)为样品电流像,图中三角形物体为Fe_3O_4晶体的一个解理平面。照片(2)(3)分别是Al、Ca元素的X射线面扫描像,可以看出Al~(+++)集中在Fe_3O_4晶体中,并且较无定型分布均匀:Ca~(++)未进入Fe_3O_4晶体中、全部分布在晶介上。
Ammonia synthetic iron catalyst is the main component of Fe_3O_4, a total of about 3 ~ 6% additives. It has been demonstrated that aluminum is mainly present in the Fe 3 O 4 crystal grains with a small amount at the boundary. Calcium is mainly present on the edge of the Fe 3 O 4 crystal grains and in the crystal grains. Potassium is mainly present on the edge of the Fe 3 O 4 crystal grains. This work has been inconsistent with the above results of the information. First, the experimental part: Sample A110-5Q type, the main component of Fe_3O_4, iron ratio (Fe ~ (++) / Fe ~ (+++)) of 0.55-0.75, the total amount of additives about 4%. Second, the experimental results: Photo (1) for the sample current image, the triangle object in the figure for the Fe_3O_4 crystal cleavage plane. Photos (2) and (3) are X-ray scanning images of Al and Ca, respectively. It can be seen that Al ~ (+++) is concentrated in the Fe_3O_4 crystal and is more uniform than amorphous: Ca ~ (++) Into Fe_3O_4 crystal, all distributed in the crystal on.