Preparation of Zeolite 4A Using Laterite Nickel Slag and the Characteristic Study of CO₂/N₂ Separation

Abstract:

Laterite nickel ore is a kind of abundant and low-cost ore. In order to obtain the cheap and high-performance adsorption material, this paper addresses that Zeolite 4A was synthesized by laterite nickel slag, based on two-step hydrothermal synthesis procedure and alkali-melting process. The crystallization degrees of different kinds of Zeolite 4A were explored under different ratios of the reactants. Optimal condition was found out for synthesis of Zeolite 4A, including the ratios of the reactants. Finally, Zeolite 4A obtained under the optimal condition was tested by XRF, NOVA 1200e physical adsorption analyzer, and SEW separately, which confirmed its high purity and complete crystals. Finally, separation of CO₂/N₂ by Zeolite 4A using STA409PC Physical adsorption instrument was studied, revealing good adsorption selectivity which became lower with rising temperature.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 7-10
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.7
• Online since: July 2014
• Authors: Tao Du*, Sheng Lu Li, Fan Yang
• Keywords: Crystallinity, Laterite Nickel Slag, Separation of CO₂/N₂, Zeolite 4A

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