Aluminum naphthalenedicarboxylate as porous metal-organic framework material

A porous metal-organic framework material comprising a bidentate organic compound bound by coordination to a metal ion, wherein

• the metal ion is AlIII and the bidentate organic compound being is 2,6-naphthalenedicarboxylate
• wherein said metal-organic frameworks materal is prepared by reacting a reaction mixture comprising an aluminum compound, 2,6-naphthalenedicarboxylic acid or one of its salts and an organic solvent comprising N,N-dimethylformamide at temperatures in the range from 100° C. to 200° C. by stirring, wherein the sum of the fractions of the aluminum compound and the 2,6-naphthalenedicarboxylic acid or one of its salts is less than 20% by weight based on the total weight of the reaction mixture,
• a X-ray diffractogram (XRD) of the framework material has a first reflection in the range from 6.5°<2Θ<7.5° and a second reflection in the range from 13.8 °<2Θ<15.0°,
• the area of the first reflection is greatest in relation to the area of all reflections in the range from 2°<2Θ<70°,
• the area of the second reflection is second greatest, and
• the sum of the areas of the first and second reflections is at least 50% of the total area of all reflections in the range from 2°<2Θ<70° and wherein the framework material, as powder, has a specific surface area of at least 1,000 m2/g determined according to Langmuir by N2 adsorption at 77K.