Converting Mn/Al layered double hydroxide anion exchangers into cation exchangers by topotactic reactions using alkali metal sulfate solutions.
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DOI: 10.1039/c9cc03491a
Abstract: Layered double hydroxides (LDHs), traditional anion exchangers, can be converted into cation exchangers by topotactic reactions using aqueous solutions of alkali metal sulfates. LDHs with the composition [Mn2Al(OH)6](An-)1/n·yH2O (An- = Cl- or NO3-, CO32-) were… read more here.
Keywords: anion; layered double; exchangers topotactic; topotactic reactions ... See more keywords
Synthesis of Asphaltene-Based Strongly Acidic Sulfonated Cation Exchangers and Determination of Their Catalytic Properties in the 2,2-Dimethyl-1,3-Dioxolane Synthesis Reaction
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DOI: 10.1134/s0965544120060055
Abstract: Abstract Results of a study of the reaction products of asphaltene sulfonation with sulfuric acid in various temperature and time ranges have been described. The maximum sulfur content in sulfonated cation exchangers at an asphaltene… read more here.
Keywords: sulfonated cation; synthesis; cation exchangers; based strongly ... See more keywords
Copper Rich Composite Materials Based on Carboxylic Cation Exchangers and Their Thermal Transformation
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DOI: 10.3390/polym13183199
Abstract: The effect of a cupric deposit (Cu2+, CuO) on the thermal decomposition of carboxylic cation exchangers (CCEs) is not known, and such studies may have practical significance. CCEs have a very high ion exchange capacity,… read more here.
Keywords: deposit; cation exchangers; carboxylic cation; composite materials ... See more keywords