OLIGOMERIC CHROMIUM(III) POLICATION SPECIES-PILLARED LAYERED TETRATITANATES ANION

https://doi.org/10.22146/ijc.21706

Hari Sutrisno(1*), Endang Dwi Siswani(2)

(1) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Yogyakarta State University (UNY), Karangmalang, Yogyakarta 55281
(2) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Yogyakarta State University (UNY), Karangmalang, Yogyakarta 55281
(*) Corresponding Author

Abstract


Intercalation of oligomeric chromium(III) polycation species in layered tetratitanates was prepared by three steps: 1) ion-exchange of H+ for K+ in potasium tetratitanates, 2) intercalation of n-alchylamine (n-propylamine, n-butylamine, n-amylamine, and n-hexylamine) compounds in layered hydrogen tetratitanates by adding an aqueous solution of  5M n-alchylamine to  hydogen titanates with stiring at room temperature,  and 3) intercalation of oligomeric chromium(III) polycation species by mixing butylamine-intercalated tetratitanates with an aqueous solution of CrCl3.6H2O at pH various. The procedure was carried out by Chimie Douce method. The results showed that all of n-alchylamine-intercalated tetratitanates crystallize on monoclinic crystal system with the Bravais lattice C. The hight intensity of the first peaks (200)  indicated that butylamine and amylamine-intercalated tetratitanates have a remarkably high crystallinity without impurities phase. The interlayered distance (d) and  the lattice parameter projected along a increase with increasing the amount of C-atoms in n-alchylamine. At pH=1.3, [CrCl(H2O)5]2+ or [CrCl2(H2O)4]+ species was pillared more efective in layered tetratitanates than [Cr(H2O)6]3+ spesies and just one spesies, Cr(H2O)6]3+ at  pH=1.7. On the contrary, [Cr(OH)(H2O)5]2+ or [Cr(OH)2(H2O)4]+ was  intercalated more effevtive than [Cr(H2O)6]3+ species  at pH=5.3.


Keywords


tetratitanates; intercalation; oligomeric chromium(III) species; Chimie Douce

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DOI: https://doi.org/10.22146/ijc.21706

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