Research on pure samples of HEU-type zeolites modified by d-and f-block transition
elements and Pb is reviewed. The interest on such modified HEU-type zeolites mainly arises …

Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans
have learnt pretty well how to make ordered empty nanocontainers, and to get useful …

Scolecite is a zeolite associated to basalts of the Parana Continental Igneous Province
(PCIP, South America). The potential of scolecite as a new material for heavy metal removal …

The experimental methodology achieved in the present study signified that the adsorption
and precipitation were main mechanisms occurred together in the removal of nickel from …

In the preface to Vol. 4, it was stressed that characterization of molecular sieves is an
indispensable prerequisite for the evaluation of results in the synthesis, modification, and …

Nickel (II) and copper (II) complexes of the Schiff base ligand O, O′-trimethyl bis
(salicylidene isonicotinylhydrazone)(H2L) were synthesized and characterized. The …

The possibility of removing Zn2+ cations from wastewater by ion exchange using natural
zeolites as exchangers has been investigated. The process of binding of zinc ions into …

The natural zeolite from Evros prefecture contains Ca-rich clinoptilolite (89 wt.%) and in total
92 wt.% microporous minerals (zeolite+ mica+ clays). Quartz and feldspars constitute the …

Inorganic complexes were added to low-rank coals by step-wise pH adjustment of a mixture
of inorganic solution and brown coal while avoiding the formation of precipitates. The nature …

There are both natural minerals and synthetic zeolites that possess the HEU framework
topology. These materials have a limited compositional range (Si/Al< 6), and the natural …