Synthesis of submicron zeolite LTA particles from natural clinoptilolite and industrial grade chemicals using one stage procedure

被引：43

作者：

Kazemian, Hossein ^{[1
,2
]}

Modarress, Hamid ^{[3
]}

Kazemi, Masoud ^{[3
]}

Farhadi, Farshid ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Fac Engn, Fuel Cell Inst, Bangi 43600, Selangor, Malaysia

[2] Univ Tehran, Technol Incubat Ctr, SPAG Zeolite R&D Grp, Tehran, Iran

[3] Amir Kabir Univ, Dept Chem, Tehran Polytech, Tehran, Iran

来源：

POWDER TECHNOLOGY | 2009年 / 196卷 / 01期

关键词：

Zeolite A; Clinoptilolite; One stage synthesize; Crystallization; REMOVAL;

D O I：

10.1016/j.powtec.2009.06.017

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

A powdered natural clinoptilolite-rich tuff (100 mesh) from Semnan region of [ran was successfully converted to higher value-added synthetic zeolite A (submicron particles of similar to 200-300 nm) in a single stage procedure under a hydrothermal condition. Effect of different parameters such as crystallization temperature, sodium hydroxide concentration, solid/liquid ratio (the mass of clinoptilolite: g; to the volume of sodium hydroxide solution; ml) and crystallization duration on the final product were investigated. The formation of zeolite A was ascertained by X-ray powder diffraction, X-ray florescence (chemical analysis), and scanning electron microscopy techniques. The results were revealed that reaction temperature of 353 K, sodium hydroxide concentration of 2 M, crystallization time of 4 h, and solid to liquid ratio of 1/18 were optimized condition for this conversion. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：22 / 25

页数：4

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