Activated carbon-metal organic framework composite materials with enhanced gas adsorption capacity and process for the preparation thereof

摘要

The present invention discloses activated carbon-metal organic framework composite materials (AC@MOF) with enhanced gas adsorption capacity. The present invention also discloses a process for the preparation of carbon-metal organic framework composite materials (AC@MOF). The present invention involves the use of “void space filling method” in metal organic frameworks (MOFs), which have been accomplished by in-situ addition of selected type and appropriate amount of activated carbon during the synthesis of MOF such as Cu-BTC, in the storage of gases such as methane. The gas adsorption capacity of these AC@MOF composite materials is significantly increased through this method.

主权项

1. A process for the preparation of an activated carbon-metal organic framework composite material with enhanced gas adsorption capacity and having activated carbon from 1 wt % to 4 wt %, wherein the said process comprising the steps:
a. dissolving an organic ligand in ethanol; b. dissolving a metal salt in the water; c. mixing the solution as obtained in step (a) with solution as obtained in step (b) followed by stirring at temperature ranging from 298K to 308K for a period ranging between 10 to 50 min; d. transferring the reaction mixture as obtained in step (c) into an autoclave and further adding activated carbon in the range 1 to 4 wt % in respect of weight of product followed by heating at temperature ranging between 383K and 423K for a period ranging between 15 to 20 hours to obtain an activated carbon-metal organic framework composite material.