Articles with "clinoptilolite" as a keyword



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H2 separation using pressed clinoptilolite and mixed copper‐clinoptilolite disc membranes

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Published in 2017 at "Canadian Journal of Chemical Engineering"

DOI: 10.1002/cjce.22683

Abstract: Disk membranes machined from high-purity natural clinoptilolite rocks demonstrated promising hydrogen separation efficiency. However, these membranes cannot be adequately scaled up. To overcome this and provide process flexibility, mixed matrix membranes are required pairing small… read more here.

Keywords: pressed clinoptilolite; copper; separation; using pressed ... See more keywords
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Coating of anatase titania on clinoptilolite by metal organic chemical vapor deposition method: enhanced mesoporosity and photocatalytic activity

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Published in 2017 at "Chemical Papers"

DOI: 10.1007/s11696-017-0350-1

Abstract: Clinoptilolite-supported TiO2 (TiO2/CPMOCVD) has been synthesized by metal organic chemical vapor deposition method (MOCVD). Titanium precursor was evaporated at 110 °C under nitrogen flow rate to promote the surface interaction between titanium species and clinoptilolite. The… read more here.

Keywords: tio2 cpmocvd; method; chemical; clinoptilolite ... See more keywords
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Cadmium removal from wastewater in a fixed-bed column system with modified-natural clinoptilolite-rich tuff

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Published in 2020 at "Chemical Papers"

DOI: 10.1007/s11696-020-01314-y

Abstract: A number of treatments to municipal wastewater include advanced oxidation processes such as solar photo Fenton and solar photo-catalytic, biological treatment and the use of specific technologies when wastewater is polluted with heavy metals. Therein,… read more here.

Keywords: column; column system; wastewater; modified natural ... See more keywords
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Removal of Greenhouse Gas (N2O) by Catalytic Decomposition on Natural Clinoptilolite Zeolites Impregnated with Cobalt

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Published in 2017 at "International Journal of Environmental Research"

DOI: 10.1007/s41742-017-0030-6

Abstract: In this work, natural zeolite, clinoptilolite were treated with acid (0.6 N HCl; code “Z-AM”) and alkaline solutions (1.5 N NaOH; code “Z-BM”). Thereafter, non-modified (as parent zeolite; code “Z-NM”) and modified zeolites were impregnated with cobalt… read more here.

Keywords: greenhouse gas; impregnated cobalt; decomposition; clinoptilolite ... See more keywords
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Synthesis of clinoptilolite-supported BiOCl/TiO2 heterojunction nanocomposites with highly-enhanced photocatalytic activity for the complete degradation of xanthates under visible light

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Published in 2020 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2020.126697

Abstract: Abstract Novel ternary BiOCl/TiO2/clinoptilolite nanocomposites with highly-enhanced photocatalytic activity under visible light were prepared by a facile hydrothermal route combining with a water bath precipitation procedure. The obtained samples were characterized by means of XRD,… read more here.

Keywords: biocl tio2; photocatalytic activity; visible light; clinoptilolite ... See more keywords
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The effect of Ag+ cations on the micropore properties of clinoptilolite and related adsorption separation of CH4 and N2 gases

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Published in 2019 at "Microporous and Mesoporous Materials"

DOI: 10.1016/j.micromeso.2019.03.007

Abstract: Abstract 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… read more here.

Keywords: highly exchanged; clinoptilolite; adsorption; effect ... See more keywords
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Nanosol precursor as structural promoter for clinoptilolite via hydrothermal synthesis and resulting effects on selective adsorption of CH4 and N2

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Published in 2020 at "Microporous and Mesoporous Materials"

DOI: 10.1016/j.micromeso.2019.109913

Abstract: Abstract Nanosol precursor was obtained via hydrothermal pre-crystallization time periods of 6, 60 and 102 h at 423 K. Different amounts of nanosol precursor with different crystallization time periods were added to the hydrothermal synthesis system as structural… read more here.

Keywords: crystallization; time; ch4; clinoptilolite ... See more keywords
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The relation of a coastal environment to early diagenetic clinoptilolite (zeolite) formation - New data from the Late Cretaceous European Basin

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Published in 2019 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2019.03.025

Abstract: Abstract Clinoptilolite, an authigenic mineral of the zeolite group, is commonly considered as a product of rhyolitic volcanic glass transformation during diagenesis of carbonate pelagic/hemipelagic sediments of Cretaceous-Paleogene age. Another, subordinate way of clinoptilolite formation… read more here.

Keywords: european basin; formation; clinoptilolite formation; clinoptilolite ... See more keywords
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Surface Characteristics of Magnetically Activated Clinoptilolite

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Published in 2020 at "Protection of Metals and Physical Chemistry of Surfaces"

DOI: 10.1134/s2070205120060040

Abstract: The effect of magnetic activation on the surface characteristics of clinoptilolite, such as particle size, surface area, pore size, and distribution, were determined. Magnetic activation was performed in an ultrahigh frequency electromagnetic field (UHF EMF)… read more here.

Keywords: surface; surface characteristics; clinoptilolite; magnetic activation ... See more keywords
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Overview of Current and Future Perspectives of Saudi Arabian Natural Clinoptilolite Zeolite: A Case Review

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Published in 2019 at "Journal of Chemistry"

DOI: 10.1155/2019/3153471

Abstract: After a thorough review of existing studies of clinoptilolite zeolites, three areas for potential investigation of the Saudi Arabian zeolites were found. They are the characterizations, the catalytic activity, active sites, and uses of natural… read more here.

Keywords: saudi arabian; clinoptilolite zeolites; zeolite; natural clinoptilolite ... See more keywords
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Optimization of Ciprofloxacin Adsorption on Clinoptilolite-Based Adsorbents Using Response Surface Methodology

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Published in 2023 at "Nanomaterials"

DOI: 10.3390/nano13040740

Abstract: The adsorption of the antibiotic ciprofloxacin (CIP) from water solution by natural zeolite–clinoptilolite (CLI), magnetic clinoptilolite (MAG-CLI), and graphene oxide coated magnetic clinoptilolite (GO-MAG-CLI) was investigated. The novel approach of an environmentally friendly and cost-effective… read more here.

Keywords: clinoptilolite; adsorption; mag cli; methodology ... See more keywords