无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2001年
3期
414-418
,共5页
孙幼松%矫庆泽%赵芸%Evans D.G%段雪
孫幼鬆%矯慶澤%趙蕓%Evans D.G%段雪
손유송%교경택%조예%Evans D.G%단설
水滑石柱撑水滑石己二酸制备表征
水滑石柱撐水滑石己二痠製備錶徵
수활석주탱수활석기이산제비표정
Layered double hydroxides (LDHs) or hydrotalcite-like materials of the type Mg1-xAlx(OH)2(Xn-)x/u·zH2O are most readily prepared when Xn- is the carbonate ion. Although many other LDHs undergo facile ion-exchange reactions, the carbonate ion in LDHs is known to be very difficult to replace by conventional ion-exchange. We have developed a simple synthesis of adipate-pillared LDHs of the type Mg4Al2 (OH)12[O2C(CH2)4CO2]·4H2O by direct reaction of free adipic acid with an LDH carbonate precursor. The materials obtained have been characterized by XRD, FT-IR and DTA. It is shown that by appropriate choice of reaction conditions, the carbonate ions in the precursor can be completely replaced by adipate ions. The adipate-pillared LDHs retain a layered structure with an interlayer distance of 1.40nm. The interlayer adipate ions are lost on heating the material to 390℃.
