Off course there are many adsorbents but presenting new adsorbents is still one of the most interesting topics. We are seeking for a cheap material having high thermal conductivity with a relatively high adsorption capacity. Such material will improve the performance of the adsorption systems.
when you start any work ( catalytic/non catalytic), Always think on a Industrial perspective. Your preparation, process, materials, labour,energy etc.. all these cost money. So it is nice to look for a naturally available material first.