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標題: Synthesis of Li/Al layered double hydroxide-guest composites under mild acid conditions
作者: Yang, D.S.
Wang, M.K.
Wang, S.L.
關鍵字: layered double hydroxide;LDH;anionic clay;intercalation;organic;anion;oxometallic anion;organometallic anion;intercalation compounds;anion-exchange;chemistry
Project: Clay Minerals
期刊/報告no:: Clay Minerals, Volume 39, Issue 2, Page(s) 115-121.
Layered double hydroxides (LDHs) are known as 'anionic clays'. They comprise a class of material with positively charged octahedral double hydroxyl layers and exchangeable anions. The Li/Al LDH term includes a group of LDHs with Li/Al octahedral double hydroxyl layers. We have demonstrated a modifed method, using Li/Al LDH-OH (OH- as interlayer anions) as the starting material, for preparing Li/Al LDH-X (X represents interlayer anions, including dioctyl sulphosuccinate (DOSS), dodecyl sulphate (DDS), mercaptoacetate (MA), EDTA, Tiron and dichromate) under mild acid conditions (pH in the range 4 to 5). However, in the case of acid-sensitive anions, Fe(CN)(6)(4-), Li/Al LDH-Fe(CN)(6)(4-) can be prepared by a two-step procedure using Li/Al LDH-DOSS or similar compounds as intermediates to react with acid-sensitive anions under mild alkaline conditions (pH approximate to 9).
ISSN: 0009-8558
DOI: 10.1180/0009855043920124
Appears in Collections:土壤環境科學系

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