In this communication, the copper net supported Cu-3(BTC)(2) membranes have been successfully synthesized by means of a "twin copper source" technique. Separation studies on gaseous mixtures (H-2/CO2, H-2/CH4, and H-2/N-2) using the membrane revealed that the membrane possesses high permeability and selectivity for H-2 over CO2, N-2, and CH, Compared with the conventional zeolite membranes, the copper net supported Cu-3(BTC)(2) membrane exhibited high permeation flux in gas separation. Such highly efficient copper net supported Cu-3(BTC)(2) membranes could be used to separate, recycle, and reuse H-2 exhausted from steam reforming natural gas.