摘要
Organic-anion-pillared layered double hydrotalcites such as Zn2AlTA(TA=terephthalate) are easily synthesized by using coprecipitation reaction of Zn2+ and Al3+ ions with terephthalic acid in NaOH solution. Exchange of this material under mild acidic conditions with the heteropolyanions proceeds smoothly to yield Zn2AlSiW11 Co and Zn2Al-BW11Cu. Characterization has been carried out by elemental chemical analysis, powder X-ray diffeaction and IR spectra. The results indicated that these materials possess exceptionally well-ordered gallery height of 0.98 nm. It was found that this kind of pillared layered catalyst has high activity and selectivity for the oxidation of benzaldehyde to benzoic acid using H2O2 as oxidant in liquid-solid phase system.
Organic-anion-pillared layered double hydrotalcites such as Zn2AlTA(TA=terephthalate) are easily synthesized by using coprecipitation reaction of Zn2+ and Al3+ ions with terephthalic acid in NaOH solution. Exchange of this material under mild acidic conditions with the heteropolyanions proceeds smoothly to yield Zn2AlSiW11 Co and Zn2Al-BW11Cu. Characterization has been carried out by elemental chemical analysis, powder X-ray diffeaction and IR spectra. The results indicated that these materials possess exceptionally well-ordered gallery height of 0.98 nm. It was found that this kind of pillared layered catalyst has high activity and selectivity for the oxidation of benzaldehyde to benzoic acid using H2O2 as oxidant in liquid-solid phase system.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1996年第4期368-371,共4页
Acta Physico-Chimica Sinica
基金
国家教委优秀年轻教师基金
关键词
杂多阴离子
催化剂
苯甲醛
过氧化氢
Heteropolyanion, Layer-pillared catalyst
Preparation, Benzaldehyde,H_2O_2 oxidation
