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

Abstract

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.

1 - 10 . (canceled) 
     
     
         11 . An activated carbon-metal organic framework composite materials wherein the content of the activated carbon is from 1 wt % to 4 wt % in the composite material. 
     
     
         12 . The activated carbon-metal organic framework composite materials as claimed in  claim 11 , wherein metal-organic frame work is Cu-BTC. 
     
     
         13 . The activated carbon-metal organic framework composite materials as claimed in  claim 11 , wherein metal-organic frame work is Cu 3 (BTC) 2 . 
     
     
         14 . The activated carbon-metal organic framework composite materials as claimed in  claim 11  are useful for storage of gases. 
     
     
         15 . The activated carbon-metal organic framework composite materials as claimed in  claim 14 , wherein the gases is selected from the group consisting of natural gas, methane, carbon dioxide and hydrogen. 
     
     
         16 . The activated carbon-metal organic framework composite materials as claimed in  claim 11 , wherein enhancement of methane adsorption capacity of activated carbon-metal organic framework composite materials ranges between 20 wt % to 95 wt % as compared to metal organic framework prepared without using activated carbon.