摘要
本文以钠型蒙脱土（Ｎａ－Ｍｔ）为原料，以羟基铬聚合阳离子为交联剂制备出羟基铬交联蒙脱土（Ｃｒ－Ｍｔ）并对其物化性能进行研究。结果表明Ｃｒ－Ｍｔ的物化性能优于Ｎａ－Ｍｔ，ｄ＿（００１）值１．６～１．９ｎｍ，比表面积８０～１９０ｍ￣２·ｇ￣（－１），１．８～５．０ｎｍ的孔约占半数以上，表面总酸量为６．１×１０￣（－４）～６．５×１０￣（－４）ｍｏｌ·ｇ￣（－１）、阳离子交换量在９．０×１０￣（－３）～４２×１０￣（－３）ｍｏｌ／１００ｇ样，但其热稳定性有待进一步提问。
In this work,polyoxychromium pillared montmorillonites(Cr-Mt)have been synthesized by ion exchange method with Na-montmorillonite and characteri-zed by a series of physical-chemical methods.The experimental results indicate that the higher ageing temperature the shor-ter ageing time. Some properties of Cr-Mt are better than that of Na-Mt.Their basal spacings(d_(001))are 1.6～1.9nm,specific surface areas are 80～190 m￣2·g￣(-1) ,pore size of 1.8～5. 0 nm is about 50%,total surface acidities are 6. 1×10￣(-4)～6. 5×10￣(-4) mol·g￣(-1),cation exchange capacities are 9.0×10￣(-3)～42 × 10￣(-3)mol/100g. However,its thermal stability is worse.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1994年第4期394-397,共4页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金
关键词
羟基铬
交联蒙脱土
催化剂
polyoxychromium solution
chromium
pillared montmorillonite
