Thermal and Spectroscopic Analysis of a Fatty Acid-Layered Double-Metal Hydroxide and Its Application as a Chromatographic Stationary Phase

Dodecyl sulfate–hydrotalcite nanocomposites for trapping chlorinated organic pollutants in water

“…For example, previous study [25] found that sorption of large guest molecules, e.g., pyrene, by an organic acidexchanged Li/Al-LDH could be regulated by varying the chain length of the carboxylic acids or type of anion with LDH. This sieving effect has been demonstrated in its application as a stationary phase in gas chromatography [29,30]. The selectivity of a hydrophobic LDH toward organic liquid mixtures has also been reported [24], and this material was suggested for use as a stationary phase in gas chromatography or as self-assembled films [29,30] in membrane and separation design.…”

“…This sieving effect has been demonstrated in its application as a stationary phase in gas chromatography [29,30]. The selectivity of a hydrophobic LDH toward organic liquid mixtures has also been reported [24], and this material was suggested for use as a stationary phase in gas chromatography or as self-assembled films [29,30] in membrane and separation design. Organohydrotalcites have been studied as pesticide sorbents [27,28] for use in decontamination or as slow-release sources.…”

“…Intercalation of organic anions, such as surfactants, into the interlayer can alter LDH surface properties from hydrophilic to hydrophobic and result in enhanced sorption capacity for nonionic organic pollutants [24]. Recently, a few reports [20,21,[24][25][26][27][28][29][30] have been published on the use of organic-modified LDH for removing organic pollutants from water and results indicate the further potential of these materials for that purpose. For example, previous study [25] found that sorption of large guest molecules, e.g., pyrene, by an organic acidexchanged Li/Al-LDH could be regulated by varying the chain length of the carboxylic acids or type of anion with LDH.…”

Structural characterization and related properties of the stearate anions intercalated Ni–Al hydrotalcite-like compound prepared by the microwave crystallization

“…According to the chain length of the myristic acid molecule CH 3 (CH 2 ) 12 COOH (21.2Å) [54] and the C-C distance in paraffins (1.27Å) [55], the dimension of stearate anions is approximately 26.28Å. Taking into account that the thickness of a brucite-like layer is about 4.8Å [56,57], so that the interlayer gallery height ( d) ranges from 26.72 to 32.60Å according to the equation: d 003 − 4.8Å for all intercalated samples [58]. Therefore, all samples exhibit the arrangement of a monolayer of stearate anions according to d values and the length of stearate anion (26.28Å), as shown in Fig.…”

Preparation of Rh-TPPTS complex intercalated layered double hydroxide and influences of host and guest compositions on its catalytic performances in hydroformylation reaction

“…Many divalent and trivalent cations (M II and M III , respectively) and the anion (A n ) can form LDHs structures, and the concentration of M II cation [810] may vary over a wide range, giving rise to a large class of isostructural functional materials. These layered solids have received considerable attention due to their many practical applications, such as ionexchangeable absorbents [11] , molecular container [12] , medication [13,14] and catalysts. There were some reports on intercalation of transition metal complexes in LDHs which have shown good catalytic activity.…”