Comparison of different synthesis routes for Mg–Al layered double hydroxides (LDH): Characterization of the structural phases and anion exchange properties

Transesterification of rapeseed oil by Mg–Al mixed oxides with various Mg/Al molar ratio

“…This outcome is difficult to compare with other papers, because authors usually determined the crystallite size for hydrotalcites (no for mixed oxides). There have been reported that increase in Mg/Al molar ratio leads to decrease [43], increase [37] and has no significant effect [44] on crystallite size of Mg/Al hydrotalcites, therefore this dependence is ambiguous.…”

Liberação de nitrato de hidróxidos duplos lamelares como potenciais fertilizantes de liberação lenta

“…São vários os métodos para obter os HDL (Crepaldi & Valim, 1998), e o da coprecipitação a pH alcalino constante é um dos mais utilizados (Olanrewaju et al, 2000;Olfs et al, 2009;Chitrakar et al, 2011). Ao aplicar um método em determinadas condições de síntese e escolher os íons a serem intercalados buscam-se obter estruturas com propriedades químicas e físicas específicas.…”

Removal of boron species by layered double hydroxides: A review

“…magnesium [18][19][20][21][22][23][24] and aluminium [25], lithium [26], chromium [27,28], Iron [17,[29][30][31][32][33][34][35][36], calcium [37], zinc [38][39][40][41], gallium [42][43][44][45], nickel [31,40,[46][47][48], indium [43], cobalt [31], manganese [49] and copper [48]. Because of their structure, LDHs are the only clay minerals that exhibit natural anion exchange properties.…”