The majority of the potassium titanates described in the literature were synthesized, and their Raman spectra recorded. The identity of the compounds K₂TiO₃, K₂Ti₂O₅, K₂Ti₄O₉, K₂Ti₆O₁₃, and K₂Ti₈O₁₇ was confirmed by x-ray diffraction. Raman spectroscopy was then used to study the hydrolysis, under different conditions, of K₂Ti₂O₅ and of K₂Ti₄O₉. On drying of the hydrolysis products, the following species were found to from: K₂(H₂O)_0.66Ti₈O₁₆(OH)₂, K_1.33(H₂O)_0.33Ti₄O_8.33(OH)_0.67, and H₂Ti₈O₁₇. On ignition at temperatures of 500-600°C these species converted, respectively, to K₂Ti₈O₁₇, K₂Ti₆O₁₃, and TiO₂(B). Raman spectroscopy was used to establish that (1) K₆Ti₄O₁₁ consists of a mixture of K₂TiO₃ and a new compound K₄Ti₃O₈; (2) K₂Ti₃O₇ consists of a mixture of K₂Ti₂O₅ and K₂Ti₄O₉, and (3) K₂Ti₅O₁₁ consists of a mixture of K₂Ti₄O₉ and K₂Ti₆O₁₃. The temperature of decomposition and the identity of the products of the thermal decomposition of K₂Ti₈O₁₇, K₂Ti₄O₉, K₂Ti₂O₅, and K₄Ti₃O₈ were determined by Raman spectroscopy. The XRD data of the newly identified compounds are reported.

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription