摘要
本文通过对含锆熔铁催化剂的红外光谱分析与讨论,发现二氧化锆对铁酸钾和四氧化三铁的特征 IR 吸收有较大影响,进而揭示了在二氧化铬与四氧化三铁相界间存在静电吸引作用,由于这种静电吸引作用,削弱了铁氧键的强度,从而促进了熔铁催化剂的还原。另外我们还发现在催化剂的制备过程中可能有锆酸钾的生成,而氧化铝的存在却能抑制这种物质的产生。
This paper studies on the fused iron catalyst containing ZrO_2from the IR spectra. We have disclosed that the addition of ZrO_2 has a greater influence on the characteristie IR absorp- tion of Fe_3O_4 and K_2Fe_2O_4,this phenomenon indicates that there exists electrostatic attraction action at boundaries of ZrO_2 and Fe_3O_4.Owing to this kind of interaction,the strength of the bonds between iron and oxygen is lessened,and consequently,the reduction of the catalyst is enhanced.In addi- tion,It has also been found that potassium zireonate may be formed when catalyst sample is pre- pared and but,if there exists Al_2O_3 simultaneously,the formation of potassium zirconate can be pre- vented.
出处
《郑州大学学报（自然科学版）》
CAS
1991年第1期100-104,共5页
Journal of Zhengzhou University (Natural Science)
基金
国家自然科学基金
关键词
熔铁催化剂
锆
红外光谱
催化剂
infra-red spectrum
fused iron catalyst
zirconium oxide
