The stability of illite-smectite interstratified with respect to discrete illite and smectite minerals was investigated by measuring their thermodynamic properties. The standard thermodynamic properties of the illite-smectite ISCz-1 mineral (G, H, S, Cp, and V) were determined between 298.15 K a...

A novel illite with β-nucleation ability toward iPP has been prepared through decoration the pristine illite with CaHA, i.e. CaHA-illite. The crystallization behavior and mechanical property of the iPP/CaHA-illite composite were studied. For comparison, the composites were also made simply by a...

In this experiment, The TiO2/illite composites were synthesized by a simple hydrothermal method, taking Ti(SO4)2 as Ti precursor and illite as substrate. The as-prepared composites were characterized by XRD, FT-IR, BET, SEM, TEM and photocatalytic performance. The results show that TiO2 particle...

Cerium hydroxide loaded on molecular sieve (CHMS) was investigated for phosphate (PO4) adsorption. As the initial phosphorus concentration was set as 5 mg L−1, CHMS possessed high PO4 adsorption capacity at 25 °C compared with COMS (ceria loaded on molecular sieve) and MS (molecular sieve), and...

HZSM-5/MCM-41 molecular sieve (H-ZM) catalysts with well-defined micro/mesoporous structures were synthesized and showed high performance for selective synthesis of triacetin via the esterification reaction of glycerol with acetic acid. The conversion of glycerol was demonstrated to be 100% and ...

Cryogenic hydrogen adsorption using molecular sieve beds is considered to be one of the main candidate processes for recovery of produced tritium from purge gas in breeding blankets and it has been chosen for separating hydrogen isotopes in Tritium Extraction System (TES) of Korean Helium Cooled...

Coal-based carbon molecular sieves (CMS) were modified by organic reagents with affinities for hydrocarbons including tetracosane (C24), lauryl sodium sulfate (SDS), and polyethylene imine (PEI), and low temperature plasma treatment in a CH4 and N2 atmosphere, respectively. The modified CMS samp...

Research on heterocyclic compounds with biological and pharmacological activity continues to arouse great interest. The study of 1,4-dihydropyridines (1,4-DHPs) is of particular interest in the pharmaceutical field due to their important applications as calcium channel antagonists for the treatm...

This research aimed to improve the stability of Chlorella-Alginate Beads (CABs) by zeolite molecular sieves 13X. Dissolution time of synthesized Zeolite-Algal-Alginate Beads (ZABs) in a chelating agent revealed a significant improvement on the beads stability (78.5 ± 0.5 min) compared to the co...

Catalysts based on natural zeolite – clinoptilolite loaded with either SnO2 (TOHCLI) or sulfated SnO2 (STOHCLI) were prepared and tested in the esterification of levulinic acid (LA) with octanol or ethanol. The Sn content in TOHCLI and STOHCLI varied from 4.5 to 12.3 wt.%. The catalysts were ch...

A novel method for efficiently removing low levels of ammonium contamination from the aqueous solution using clinoptilolite in a high-gravity rotating packed bed (HGRPB) was developed. Our batch experiments have shown that irregular clinoptilolite gave better ammonium removal efficiencies due to...

In this study, clinoptilolite (CLN), mordenite (MOR) and chabazite (CHA) from Turkey and those of H+-, Na+-, K+-, Li+-, Ca2+- and Mg2+- exchanged forms were investigated for hydrogen storage at 77 K using volumetric apparatus up to 100 kPa. Cation exchange procedures were carried out using 1.0 M...

The calcination temperature has a great influence on the adsorption performance, but there are few studies on the calcination temperature. In this research, the effects on clinoptilolite calcined at different temperatures under vacuum conditions are studied and the raw material of clinoptilolite...

TiO2-supported clinoptilolites (TiO2/clinoptilolites) were successfully synthesized with controlled crystal phase and particle size via hydrothermal method to enhance photocatalytic performance of TiO2. The effects of various parameters including temperature, acidity and concentration of Ti-cont...

Removal of heavy metal ions from wastewater by natural clinoptilolite has been well investigated. However, the removal efficiency of heavy metals with natural clinoptilolite is not consistent due to its uncertain quality. Furthermore, the impurities in natural clinoptilolite significantly affect...

In this study, we report on the effects of Ag+ cations exchange within clinoptilolite zeolite in relation to both the physicochemical and the gas adsorption characteristics. Clinoptilolites cation-exchanged with AgNO3 to varying degrees were investigated and the influence of naturally occurring ...

Thermogravimetric analysis was performed to differentiate between the thermal and thermo-catalytic decomposition behaviour and kinetics of switchgrass (SG) pyrolysis and catalytic pyrolysis using bentonite or clinoptilolite. Silica sand was tested as an inert material with a thermal conductivity...

Alkaline activated aluminosilicate materials have been studied mainly in the building industry as a substitute for concretes, ceramic materials and thermal insulations, but their properties predispose them to much greater use in the chemical industry. The aim of this study is to determine whethe...

Physico-chemical methods are the most informative studies for natural zeolites. In the present study, zeolite derivative material called as clinoptilolite was employed for the purpose of adsorption. The lead ions (Pb2+) were investigated for removability from phosphoric acid (H3PO4) medium by cl...

This work deals with the study of the effect of the amount of cethyltrimethylammonium bromide (CTAB) surfactant, used in the preparation of starting organobeidellites, on physico-chemical properties and photocatalytic activity of TiO2 supported beidellite (Bd) nanocomposites against the removal ...