混合金属络合物羟基镍铝交联蒙托土的合成  

SYNTHESIS OF HYDROXY-Ni-AI PILLARED CLAYS CONTAINING MIXED-METAL COMPLEXES

作　　者：赵东源[1] 杨亚书[1] 郭燮贤[1] 

机构地区：[1]中国科学院大连化学物理研究所催化基础国家重点实验室,大连116023

出　　处：《Chinese Journal of Catalysis》1993年第2期107-113,共7页催化学报（英文）

摘　　要：用取代法和共聚法合成了一系列羟基镍铝交联蒙托土。(27)~Al-NMR,UV谱表明两种合成方法都可以得到具有Kessin结构的羟基镍铝柱。取代法合成的交联蒙托土具有均一的(001)面衍射(d_(001)约1.80nm),而共聚法的样品有两种羟基镍铝柱支撑着层间,分别在1.80nm和1.55nm附近产生复合(001)面衍射。用高温老化处理可改善交联蒙托土的热稳定性。经过处理的样品在700℃焙烧后仍可保持稳定,与不经处理的样品相比,热稳定性提高200℃以上。A series of hydroxy-M-Al cross-linked montmorillonites (Ni-Al--CLM) were prepared by two new methods, i. e. substitution and copo-lymerization. According to the 27A1-NMR and UV spectra of the pillaring solution, it may suggest that the hydroxy-M-Al oligomer having the structure of Keggin can be prepared by these two methods. Ni-Al-CLM prepared by substitution method shows only one (001) peak with d(001) value of 1.80 nm. But for Ni-Al-CLM prepared by copolymeriza-tion, there are two (001) peaks with basal spacing of 1.80 nm and 1.55 nm. The heat treatment of the pillaring agents before cross-linking or after cross-linking reaction was first performed on Al-CLM and Ni-Al--CLM, the higher thermal stability of these clays was resulted as compared with the untreated samples.

关 键 词：交联 分子筛 蒙脱石 羟基镍铝 

分 类 号：TQ028.8[化学工程]