During the last years there has been an increas ing interest in new mesoporous molecular sieves con taining transition metal cations in their framework.Substitu
Cordierite honeycombs are widely used as mono lith reactors in high gas flux circumstances due to their high thermal stability and low-pressure drop,such as cat
Zeolites with grain size less than 100 nm, which bear both the unique physical properties of nano grains and the unique micropore character of zeo lites, are bi