Synthesis of mordenite from diatomite: a case of zeolite synthesis from natural material

Sanhueza, Vilma; Kelm, Ursula; Cid, R.

doi:10.1002/jctb.801

Cited by 43 publications

(22 citation statements)

References 5 publications

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“…Diatomite easily dissolves in basic solutions. There are examples of the synthesis of zeolites from diatomite itself [17,18], but the direct synthesis from diatomite lacks Al sources or template agents.…”

Section: Introductionmentioning

confidence: 98%

Zeolite synthesis from paper sludge ash at low temperature (90°C) with addition of diatomite

Wajima

Haga

Kuzawa

et al. 2006

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 98%

Zeolite synthesis from paper sludge ash at low temperature (90°C) with addition of diatomite

Wajima

Haga

Kuzawa

et al. 2006

Journal of Hazardous Materials

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“…12), 13) Among the various raw materials, diatomite has been reported as a material for the synthesis of artificial mordenite at low cost without the addition of a template or a seed. 14), 15) Furthermore, preparation of a composite material of artificial mordenite and magnetite also seems possible by using our method. 9) In this study, we investigated the synthesis conditions of the mordenite from various diatomites as raw materials and the composite material of the mordenite and the magnetite.…”

Section: Introductionmentioning

confidence: 89%

Preparation of mordenite and its composite material with nano-sized magnetite from diatomites for radioactive Cs decontamination

Yamada

Johan

Matsue

et al. 2015

J. Ceram. Soc. Japan

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Mordenite was artificially synthesized using various diatomites for radioactive Cs decontamination. A high CEC (Cation Exchange Capacity) value was obtained when the diatomite had a high Al/Si elemental ratio. The Cs + adsorption rate from 100 ppm Cs solution for the synthesized mordenite (1.0 g) was ca. 100% and ca. 83% in 100 mL of water and seawater, respectively. The composite powder material consisting of mordenite and nano-sized magnetite was synthesized from a mixed slurry of the diatomite and nano-sized magnetite. Magnetic collection rate for the composite material using a neodymium magnet was larger than 90% for the 20 and 30 wt % magnetite-containing composite materials. The total Cs decontamination rates using magnetic collection after the Cs + adsorption in water were 92.7% and 97.2% for the 20 and 30 wt % magnetite-containing composite material, respectively.

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“…11) Besides being made from chemical reagents, zeolites can be synthesized from industrial wastes such as coal fly ash 12)14) and natural resources such as diatomite, 15), 16) and the obtained zeolites are usually called artificial zeolites. A Na-P1 type artificial zeolite synthesized from coal fly ash had a high ability for Cs + adsorption, and the high Cs + adsorptivity was ascribed to its 0.38 nm pore opening size which is close to the diameter of Cs + .…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of Cs<sup>+</sup> onto artificial zeolites synthesized from coal fly ash and diatomite

Johan

Yoshida

Munthali

et al. 2015

J. Ceram. Soc. Japan

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The radioactive decontamination of water, soil and other materials requires cheap and effective adsorbents. Artificial zeolites synthesized from an industrial waste (coal fly ash: Na-P1 type zeolite) and a natural material (diatomite: mordenite type zeolite) have a high Cs + adsorptivity in the adsorption experiments using 0.1 g of the zeolite and 50 mL of up to 7.5 mM CsCl. The coexisting cation suppressed the Cs + adsorption onto the zeolites, and the effect of the suppression was in the order,. A thermodynamic analysis proved that the Cs + adsorption onto the two zeolites was exothermic favoring a lower temperature. The artificial mordenite showed a greater Cs + adsorption strength, higher distribution coefficient and lower "G°, especially at low Cs + concentrations. Adsorption isotherm analysis by the Langmuir, Freundlich, Temkin and DubininRadushkevich models showed a greater Cs + adsorption selectivity for the artificial mordenite even at a low pH.

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Synthesis of mordenite from diatomite: a case of zeolite synthesis from natural material

Cited by 43 publications

References 5 publications

Zeolite synthesis from paper sludge ash at low temperature (90°C) with addition of diatomite

Zeolite synthesis from paper sludge ash at low temperature (90°C) with addition of diatomite

Preparation of mordenite and its composite material with nano-sized magnetite from diatomites for radioactive Cs decontamination

Adsorption characteristics of Cs<sup>+</sup> onto artificial zeolites synthesized from coal fly ash and diatomite

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