New data on the isomorphism of extra-framework components (including chromophores) in two- and multilayer minerals belonging to cancrinite sodalite groups, are obtained using chemical single-crystal X-ray diffraction as well infrared, Raman, ESR, UV–Vis–near IR absorption photoluminescence spectroscopy methods. It is shown that blue color these may be due CO3•? or S3•? radical anions, whereas y...

The torsion between the central benzene ring and the outer aromatic rings in 1,3,5-tri-p-(tetrazol-5-yl)phenylbenzene (H3TPB-3tz) and the absence of such strain in 2,4,6-tri-p-(tetrazol-5-yl)phenyl-s-triazine (H3TPT-3tz) are shown to allow the selective synthesis of noncatenated and catenated versions of expanded sodalite-type metal-organic frameworks. The reaction of H3TPB-3tz with CuCl2.2H2O ...

Nanocrystalline NaNO3 enclathrated microporous material with intermediate structure (INT) between the well known zeolites sodalite (SOD) and cancrinite (CAN) can be prepared from aluminosilicate gels under addition of high amounts of NaOH and NaNO3 using low temperature conditions (333 K) within reaction periods of 1 96 h. The nanocrystalline products were characterized by X-ray powder diffract...

Alkali sodalites containing boron (B) as the main framework cation are scarce. A cubic lithium sodalite B in framework, Li8B6Si6O24Cl2, whose lattice parameter [7.8856(1) Å] is smallest of known alkali sodalites, has been discovered, and Li8B6Si6O24Cl2-based glass-ceramics have prepared from Li2O–B2O3–SiO2–LiCl quaternary system. The relative density resulting weight fraction Li8B6Si6O24Cl2 the...

Abstract In this work, three samples of bauxite were used as inexpensive sources for the zeolite formation by a green process based on vapor-phase crystallization (VPC) method. The synthesis was carried out using water bath with deionized heated at 35, 45, 60 or 90 °C. During process, NaOH pre-fused bauxites contacted only vapor from liquid. results indicate that sodalite formed in all after VP...

This paper investigates the atomic structure and phase assemblages in new sodium-stabilized magnesium aluminosilicate hydrate (M-(N)-A-S-H) cementitious binders. Results indicate that absence of Ca2+, Mg2+ promotes a binder Si-Al tetrahedral sheets octahedral Mg with hydrated Na+ cations likely interlayer sites similar to trioctahedral micas (phyllosilicates). NMR studies verify incorporation A...