Preparation and characterization of merlinoite for potassium extraction from seawater

被引：19

作者：

Jin, Na ^{[1
]}

Meng, Chunxia ^{[1
]}

Hou, Jin ^{[1
]}

机构：

[1] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 04期

关键词：

Merlinoite; Template-free; Potassium extraction; Seawater; ORGANIC TEMPLATE; ZEOLITE; ABSENCE; ZSM-5;

D O I：

10.1016/j.jiec.2013.08.003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The preparation of zeolites for potassium extraction was extensively investigated by hydrothermal method without organic template. The K+ ion-exchange capacities of synthetic zeolites in seawater were tested. Merlinoite with high ion-exchange capacity was successfully synthesized in the synthesis gel with the molar composition of 15K(2)O:12SiO(2):Al2O3:570H(2)O. The K+ ion-exchange capacity of merlinoite is 58.7 mg/g in seawater, and therefore it can be used to extract potassium selectively from seawater. Merlinoite was characterized by X-ray diffraction, scanning electron microscopy and energy dispersion spectroscopy. Merlinoite crystal which is mainly composed of Si, Al, K and O exhibits a square pillar shape. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：1227 / 1230

页数：4

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