Small silver clusters confined inside zeolite matrices have recently emerged as a novel type of highly luminescent materials. Their emission has high external quantum efficiencies (EQE) and spans the whole visible spectrum. It has been recently reported that the UV excited luminescence of partially Li-exchanged sodium Linde type A zeolites [LTA(Na)] containing luminescent silver clusters can be...

This paper presents a comparative analysis of microstructural parameters by the powder X-ray diffraction method on polycrystalline sample and fractal analysis. The presented results are obtained crystallographic programs FullProf based Rietveld method. synthetic Ba/Ca-celsian has been used for feldspar synthesized thermal induction phase transformation process ion exchange Ca-LTA zeolite with B...

Fig. 1 Self-diffusion coefficients of (+) methane, (x)ethane, (Δ)propane [7], and of (○)methanol [8] in NaCaA in comparison with the first results obtained with two different specimens of cation-free Si-LTA, viz. of (■)ethane and (▲)propane in specimen I and of (□)ethane, (⃟)ethene and (●)methanol in specimen II. 1. Introduction In elucidating the origin of the discrepancies in the message of d...

Specially synthesized extra-large crystallites of zeolite LTA with intentionally added mesoporosity are used for an in-depth study of guest diffusion in hierarchical nanoporous materials by the pulsed field gradient NMR technique. Using propane as a guest molecule, intracrystalline mass transfer is demonstrated to be adequately described by a single effective diffusivity resulting from the weig...

Normally, 3D printed objects via photopolymerization usually don’t have fully optimized mechanical properties and functions. In this context, the addition of single filler can improve these through access to composite materials. However, inevitably has a negative influence on light penetration inside composites strongly reducing depth cure. Hence, fabrications photo-composites based combination...

In the context of CO2 removal from biogas, a series binderless zeolite LTA adsorbents with macroscopic bead format (0.5–1.0 mm) and hierarchical porosity (i.e. zeolitic micropores being accessible through meso- macropores mainly in 10–100 nm range) was synthesized variety Si/Al ratios (1.2–3.9) using Amberlite IRA-900 anion-exchange resin beads as hard template. The CH4 adsorption capacity Na-f...

This study demonstrated the conversion of alum sludge produced at water treatment plants to high quality zeolite LTA. Thus, problems with landfilling costs and environmental contamination may be avoided. The methodology involved alkali fusion pre-treatment followed by hydrothermal synthesis improve quantity LTA made. Alum activation using facilitated formation high-quality (97 wt%) which was co...