PREPARATION AND CHARACTERIZATION OF HYDROXY-FEAL PILLARED CLAYS

	PREPARATION AND CHARACTERIZATION OF HYDROXY-FEAL PILLARED CLAYS
	ZHAO, DY ; WANG, GJ ; YANG, YS ; GUO, XX ; WANG, QB ; REN, JY
刊名	CLAYS AND CLAY MINERALS
	1993-06-01
卷号	41 期号:3 页码:317-327
关键词	Acidity Hydroxy-feal Pillars Pillared Clay Preparation Stability
ISSN号	0009-8604
文献子类	Article
英文摘要	Solutions containing hydroxy-FeAl oligocations (HFA) were prepared by two procedures: (1) treatment of a mixture of FeCl3 and AlCl3 with aqueous Na2CO3, followed by aging of the product and (2) preliminary preparation and aging of hydroxy-Al13 oligocations followed by reaction of the latter with aqueous FeCl3. Ion-exchange of Na-montmorillonite with HFA yield pillared clay (designated as FeAl-PILC) with d(001) values of 1.98-1.56 nm and a surface area of 230 m2/g. The pillar structure, thermal stability, surface acidity, and reduction behavior of the pillared clays were determined by Al-27-NMR, XRD, DTA, Mossbauer spectroscopy, Py-IR TPD, TPR. Fe/Al ratios greatly affect the pillar structure, surface area and thermal stability of FeAl-PILC. The pillar in FeAl-PILC with Fe/Al ratio <0.5 has a Keggin structure, similar to that of Al-PILC, but the pillar structures of FeAl-PILC with Fe/Al greater-than-or-equal-to 0.5 are the ferric tripolymer species similar to those of Fe-PILC. The basal spacings, surface area, and thermal stability are decreased with increasing Fe/Al ratio. There is relatively strong interaction between Fe and Al in the pillars. The interaction is enhanced with decreasing Fe/Al ratio. Reduction of the Fe phase in FeAl-PILC was reduced by the interaction of Fe with Al.
WOS关键词	CATALYSTS ; HECTORITE ; SMECTITE ; SILICA
WOS研究方向	Chemistry ; Geology ; Mineralogy ; Agriculture
语种	英语
出版者	CLAY MINERALS SOCIETY
WOS记录号	WOS:A1993MC29300006
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167948]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	ZHAO, DY
作者单位	1.JILIN UNIV,DEPT CHEM,CHANGCHUN 130023,PEOPLES R CHINA 2.CHINESE ACAD SCI,DALIAN INST CHEM PHYS,DALIAN 116023,PEOPLES R CHINA
推荐引用方式 GB/T 7714	ZHAO, DY,WANG, GJ,YANG, YS,et al. PREPARATION AND CHARACTERIZATION OF HYDROXY-FEAL PILLARED CLAYS[J]. CLAYS AND CLAY MINERALS,1993,41(3):317-327.
APA	ZHAO, DY,WANG, GJ,YANG, YS,GUO, XX,WANG, QB,&REN, JY.(1993).PREPARATION AND CHARACTERIZATION OF HYDROXY-FEAL PILLARED CLAYS.CLAYS AND CLAY MINERALS,41(3),317-327.
MLA	ZHAO, DY,et al."PREPARATION AND CHARACTERIZATION OF HYDROXY-FEAL PILLARED CLAYS".CLAYS AND CLAY MINERALS 41.3(1993):317-327.