Chemical etching may increase the porosity. If you have no other option then try it.

Thanksfor your rapid answer but chemical etching with acid or basic solution?what about thermic method do you try it?

I have not tried it but thermic method may also work through evaporation of H2O trapped inside. The best may be first thermic then followed by acid etching.

I 'll try them than i 'll answer to you thank you

regards

Most welcome and all the best.

You can intercalate it with small cation like hydrogen by inserting the zeolite in acetic acid solution for a week

Hi,

i did it in several organic acids after then a heat treatment,process, the interfoliaire distance is enhanced (rdx). The results of adsorption are not ready yet...

Good question and interesting discussion.

Dear Annangi Subba Rao

the probleme that the mordenite type's zeolite containes hught amount of biotite and quatz, do ou have some literatures of how to trougt away these indesirable minerals it must be clean first to be more efficiency

happy new year 2017

regards

Dr.(Ms.)Nedjma Bouzidi,improving properties of zeolite by removing some impurities or undesirable minerals  is an important task  for efficiently utilizing these materials in industry or agriculure.From 2010 onwards my colleagues Dr.K.Ramesh and K.S.Reddy have been studying the properties of zeolites  or characterizing zeolites for use in agricutre as materials for loading plant nutrients,studying nutrient behaviour  in soil and improving nutient use efficiency in crops.You can see our work in my publication list or  in the publications of Dr.K.Ramesh(he has published two reviews one in Current Science and another in Advances in Agronomy).Dr.Dilip Kumar Pal from Narional Bureau of Soil Survey and Land use planning ,Nagpur may offer some suggestions in the line you are interested in.I wish success in your research work in New year 2017.

Thank you for the answer Mr Annangi Subba Rao

i wish to inprove the adsorption property of mordenite in cement fields (portland)

so the quartz and biotite phases are very indesirable for me

Sure, I wish to keep in touch with you

happy new year 2017

For this applicatión you must used mordenite sodic I believe that is no necessary to open te pororus. Used de a high relation Al2O3/SiO2 equal 5.

Hi Trino Romero,

Thank you for the answer, it is a mordenite sodique

Biotite and quartz must be removed..did you have an idea for this?

I have tried a magnetic separation but it takes time and the quantitative result is very low

Hi, Nedjma Bouzidi, but are you used natural mordenite??? 

You can used comercial mordenaite that the volumen of  porous that you want , to separated biotite and quartz, with aut  destruyed mordenite structure is not possible

you can change or modify the structure of zeolite (mordenite) to make it more porous  by activation acid( H2SO4 or HCl  ) and you must used mordenite sodic by ion Exchange process in the end you  have a good efficiency as an adsorbant.

Thank you Halima cherifi-naci for this contribution

Yes, it  run as an experimental procedure due that i did it last year

regards