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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Convenient Hydrothermal Synthesis of Zeolite a...

Convenient Hydrothermal Synthesis of Zeolite a from Potassium-Extracted Residue of Potassium Feldspar

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Abstract:

Zeolite A was successfully synthesized via convenient hydrothermal process using potassium-extracted residue of potassium feldspar as a combined source for silica and alumina. Optimization studies on the molar ratios of Na2O/SiO2 and H2O/SiO2, and aging time have been conducted. The results were that pure zeolite A with high crystallinity could be synthesized when the reaction mixture with molar ratios of Na2O/SiO2 and H2O/SiO2 of 2.0 and of 85, respectively, were crystallized at 100°C for 3h. Aging was found to be not prerequisite for the formation of zeolite A in the system. The product was characterized by XRD, FTIR, SEM and calcium exchange capacity. Finally, a comparative study of the zeolite A formation from the potassium-extracted residue and other industrial waste or natural silicate minerals was also carried out.

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Materials Processing Technology, ICAMMP2011

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

297-302

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.297

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Online since:

December 2011

Authors:

Shuang Qing Su, Hong Wen Ma

Keywords:

Hydrothermal Synthesis, Potassium-Extracted Residue, Zeolite A

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