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https://doi.org/10.1021/cm3035455

has been cited by the following article:

• TITLE: Low Temperature Synthesis of Zeolites of the Faujasite Family (FAU-EMT) Using Industrial Mineral Waste (FR) from Silane Production

  AUTHORS: Valeriy Petrov, Josef-Christian Buhl

  KEYWORDS: FAU-EMT Zeolites, Disordered Intergrowths, Industrial Waste, 25°C Synthesis

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.5 No.11, November 10, 2017

  ABSTRACT: Zeolite formation was investigated under low temperature conditions between 40°C - 25°C under insertion of a Si-rich filtration residue (FR) from waste water cleaning of the silane production. Syntheses were performed under open system conditions without stirring. The application of templates was excluded but gel formation was optimized by addition of citric acid. Beside a minimal consumption of process energy during synthesis under very low temperatures even FR was inserted without an expansive pre-treatment like calcination. Disordered intergrowths of FAU-EMT intermediates were obtained in each case, even at a temperature of only 25°C. The reaction products always occurred in two sequences, one at the bottom and another at the top of the reaction bin. A better crystallinity was detected for the latter products and the Si/Al ratio of these FAU-EMT members was close to 1.0 like in zeolite LSX. In contrast chemical analyses revealed an enrichment of Ca- and Mg- impurities from FR in the bottom products.