Optimization and Synthesis of a La-TMA MOF with Some Improvements in Its Properties.

A La-TMA metal-organic framework (MOF) made up of benzene-1,3,5-tricarboxylate and La(III) was synthesized by a different methodology compared to those in previous reports. By using various approaches, the structural characteristics and physical properties of the La-TMA MOF were analyzed. Eventually, the results showed micro-hexagonal hollow tubes with a high crystallinity grade and thermal stability (up to 400 °C) and a higher surface area compared with those from earlier reports. The BET surface area of a similar previous MOF was about 14.8 m2/g; however, in the current project, the BET surface area increased to about 34.49 m2/g and the Langmuir surface area to 42.3 m2/g.