Synthesis of Loaded Silver 4A Zeolite Molecular Sieve with Magnetic Cores of SiO₂/(γ-Fe₂O₃- SiO₂) for Demercuration

Abstract:

It is an effective solution to the problem of agglomeration using the magnetic composite SiO₂/(γ-Fe₂O₃- SiO₂) instead of traditional magnetic particles Fe₃O₄ as the core of molecular sieve. The traditional hydrothermal method was utilized by means of adding the magnetic composite particles SiO₂/(γ-Fe₂O₃- SiO₂) into the pre-made crystallization liquid. Then, a series of magnetic 4A zeolites with varying contents of SiO₂/(γ-Fe₂O₃- SiO₂) were synthesized under the condition of ultrasonic crystallization for 6 hours with the power of 100W and temperature of 70 °C . Afterwards, the characterization tests such as XRD,SEM,TG,IR were carried out; the final result showed that the performance of 4A zeolite molecular sieve with SiO₂/(γ-Fe₂O₃- SiO₂) is basically identical with the pure 4A zeolite molecular sieve. The absorption rate was 13.5927μg/g by using the 4A zeolite molecular sieve with SiO₂/(γ-Fe₂O₃- SiO₂) for the absorption of mercury. Key words: 4A zeolite molecular sieve; magnetic composite; silver loaded;Demercuration

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1144-1148
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1144
• Online since: January 2014
• Authors: Yue Qin Qiu, Lei Jia
• Keywords: 4A Zeolite Molecular Sieve, Demercuration, Magnetic Composite, Silver Loaded

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