نتایج جستجو برای: Analcime
تعداد نتایج: 136 فیلتر نتایج به سال:
The present work introduces the study of the CO2 capture process by zeolites synthesized from paper sludge and scrap glass. Zeolites ZSM-5, analcime and wairakite were produced by means of two types of Structure Directing Agents (SDA): tetrapropilamonium (TPA) and ethanol. On the one hand, zeolite ZSM-5 was synthesized using TPA; on the other hand, analcime and wairakite were produced with etha...
─The Nafion/zeolite composite membranes were synthesized for polymer electrolyte fuel cells (PEMFCs) by adding zeolite in the matrix of Nafion polymer. Two kinds of zeolites, Analcime and Faujasite, were used. The physicochemical properties of the composite membranes such as water uptake, ion-exchange capacity, hydrogen permeability, and proton conductivity were determined. The fabricated compo...
Vanadium silicates such as V-Al-analcime, V-analcime, V-magediite and V-ZSM-11 were synthesized using vanadium pentoxide or vanadyl sulfates. Vanadium silicates with analcime structure with and without aluminum (V-Al-analcime, V-analcime) were prepared as pure phase by hydrothermal crystallization from a gel with molar composition of (1 SiO2; 0.2 V2O5; 1 Na2O; 0.034 Al2O3; 35.7 H2O) and (1 SiO2...
Production of a high value zeolite from fly ash has been shown to be an avenue for the utilization of South African fly ash which presently constitutes a huge disposal problem. The synthesis of zeolites Na-P1 and analcime on a micro-scale has been successful and preliminary investigation shows that scale-up synthesis is promising. However, the post-synthesis supernatant waste generated contains...
In this study, chemical and structural properties of natural analcime-rich zeolite tuff from Turkey that ion-exchanged forms investigated. The microporous structure the presence extra-framework cations are great importance for characterizing unique zeolites. Ion-exchanged (K+, H+ Ca2+) analcime were prepared with 1 M KNO3,1 Ca(NO3)2 HCl solutions in a shaker 6 hours at 80 °C. obtained samples c...
A new locality of böhmite and zeolite minerals, called „Soutěsky above the quarry“, occurs near quarry „Soutěsky“ on SW slope Hlídka hill, eastward Soutěsky village, about 5 km od town Děčín (Czech Republic). The mineralization is bound to vugs Cenozoic volcanics. Böhmite forms mostly whitish brownish hemispherical spherical clusters up mm in size. unit-cell parameters böhmite, refined from X-r...
The paper is concerned with (i) the hydrothermal synthesis of hydrous zirconium dioxide (HZD) bearing analcime (HZD-ANA, zirconia-analcime) and (ii) its sorption properties respect to Cs+ Sr2+. HZD-ANA particles were synthesized from coal fly ash cenospheres composed aluminosilicate glass (SiO2/Al2O3)wt.=3.1 characterized by PXRD, SEM-EDS, STA, low-temperature N2 adsorption. non-radioactive sim...
In this study, structural, thermal, and hydrogen (H2) adsorption properties of natural analcime-rich zeolite tuff (A) from Trakya (Turkey) that acid-treated forms investigated. Analcime mineral was treated with 0.1, 0.5, 1, 2, 3 M HCl solutions at 80 °C for 5 h. Differences in structural thermal behaviors the analcime samples before after acid- treatment were examined by X-ray fluorescence spec...
Analcime along with other zeolite group minerals such as: Tetranatrolite, Natrolite, Mesolite, Scolcite, Heulandite, Stilbites and, levyne occur as vein and cavity filling minerals in the intermediate to basic volcanic rocks in South Kahrizak. Scanning Electron Microscopy (SEM) of microcrystaline analcime reveal pseudo-cubic prismatic faces of [211] containing laminations perpendicular to the e...
vanadium silicates such as v-al-analcime, v-analcime, v-magediite and v-zsm-11 were synthesized using vanadium pentoxide or vanadyl sulfates. vanadium silicates with analcime structure with and without aluminum (v-al-analcime, v-analcime) were prepared as pure phase by hydrothermal crystallization from a gel with molar composition of (1 sio2; 0.2 v2o5; 1 na2o; 0.034 al2o3; 35.7 h2o) and (1 sio2...
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