1Brindley G W, Sempels R E. Preparation and properties of some hydroxy-aluminium beidellites [ J ]. Clay Minerals, 1977 ( 12 ) : 229-237.
2Yamanaka S, Doi T, Sako S, et al. High surface area solids obtained by intercalation of iron oxide pillars in montmorillonite [ J]. Mate- rials Research Bulletin, 1984,19 (2) : 161-168.
3Choudary B M, Shobha Rani S. Asymmetric oxidation of sulfides to sulfoxides by chiral titanium pillared montmorillunite catalyst [ J]. Catalysis Letters,1993,19(4) :299-307.
4Bartley G J J, Burch R. Zr-containing pillared interlayer clays. Part Ⅲ. Influence of method of preparation on the thermal and hydro- thermal stability [ J ]. Applied Catalysis, 1985 (91) : 175-185.
7Jianbing Zhou, Pingxiao Wu, Zhi Dang, et al. Polymeric Fe/Zr pil- lared montmorillonite for the removal of Cr(VI) from aqueous so- lutions [ J]. Chemical Engineering Journal, 2010,162 ( 3 ) : 1035- 1044.
8Heylen I , Vansant E F. The difference in adsorption capacity be- tween Fe-PILCs and modified Fe-BuA-and Fe-Zr-PILCs [ J ]. Mi- croporous Materials, 1997,10 ( 1 ) :41-50.
10Long R Q, Yang R T. Selective catalytic reduction of nitrogen ox- ides by ammonia over Fe3+-exchanged TiO2-pillared clay catalysts [ J ]. Journal of Catalysis, 1999,186 (2) :254-268.
7Manjanna J. Preparation of Fe(Ⅱ) -montmorillonite by re- duction of Fe (Ⅲ)-montmorillonite with ascorbic acid [ J]. Applied Clay Science, 2008, 42:32 - 38.
8Yuan P, Fan M, Yang D, et al. Montmorillonite-suppor- ted magnetite nanoparticles for the removal of hexavalent chromium[ Cr (Ⅵ) ] from aqueous solutions[ J]. Journal of Hazardous Materials, 2009, 166 (2) : 821 - 829.
9He T, Chen C C, Traina S J. Inhibited Cr(Ⅵ) reduction by aqueous Fe ( Ⅱ ) under hyperalkaline conditions [ J ]. Environmental Science and Technology, 2004, 38 (21) : 5535 - 5539.
10Buerge I J, Hug S J. Influence of mineral surfaces on chromium(Ⅵ) reduction by iron(Ⅱ)[J]. Environmental Science and Technology, 1999, 33:4285-4291.
