Adsorption characteristics of divalent cation-exchanged ETS-4s pretreated at different temperature

Zeolites and related sorbents with narrow pores for CO2 separation from flue gas

“…Kuznicki et al, showed that Sr 2+ exchanged ETS-4 can be used for separation CO 2 from CH 4 , the material has since be put into application and carries a name of "Molecule Gate". [113][114][115] As shown separately by Park et al 116 the CO 2 uptake of Sr-ETS-4 and other forms of ETS-4 varied significantly depending on the dehydration temperature. In their study, Ca-ETS-4 dehydrated at 373 K for 8 hours showed the highest uptake of $2.2 mmol g À1 (101 kPa, 298 K) of Ca, Sr and Ba-ETS-4 ( Fig.…”

“…Fig.14CO 2 adsorption isotherms of Ca, Sr and Ba-ETS-4 at 298 K, samples prepared at 373 K. Reproduced with permission 116. …”

Microporous titanosilicates Cu2+– and Co2+–ETS-4 for storage and slow release of therapeutic nitric oxide

“…Slight changes in the XRD pattern were previously reported for other cation-exchanged ETS-4 materials. [14][15][16] The Na + cations in the Na-ETS-4 structure (Fig. 1) reside at the centre of the 6-member rings (site 1) and between the ve and six coordinated Ti 4+ at the 8-member pore walls (site 2) (Fig.…”

Crystal structures of Mg2+, Ba2+ and Cs+ exchanged K–Na–ETS-4

“…The high cation exchange capacity has been also patented for sorbent applications of radioactive Cs and Sr isotopes [12]. Mineral zorite and related ETS-4 structures have attracted significant interest due to their versatile ion exchange properties including elements as Co, Cd, Hg [13], Tl [14], Pb [15], Cs [16], Ca and Ba [17,18]. However, the detailed structural studies of all these works are missing or they are limited to isolated single crystals of the mineral zorite.…”