Adsorption, separation, and catalytic properties of densified metal-organic frameworks

•Recent developments in the densification of MOFs for industrial applications.•Densified MOFs exhibit improved chemical stability, and better mechanical strength.•Summary of densified MOF-5 with enhanced volumetric hydrogen storage capacity.•Improved liquid chromatography and acidic gas separation properties of densified MOFs.•Progress and challenges in the densification of MOFs.