Effect of NaOH Concentration Toward the Characteristics of Activated Natural Zeolite from Blitar – East Java

Andi Nafis An Naafi, R. Tjahjanto, Y. P. Prananto
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引用次数: 0

Abstract

This study discusses the activation of natural zeolite from Blitar City – East Java using NaOH solution (0.5 M and 1.0 M). Characteristics of unactivated and activated zeolites were also investigated, as well as the effect of the activator (NaOH solution) on functional groups, element composition, pore size, specific surface area, and total pore volume. FTIR spectroscopy, XRF, and gas physisorption were conducted to support the study. Experimental data showed that: (1) the major functional groups were observed at 1250-780 cm-1 in the infrared spectra, in which the unactivated and the activated zeolite were not significantly different; (2) the elemental composition of zeolite (Si and Al) tended to decrease after the activation process; (3) the pore size of the activated zeolite increased while the surface area and total pore volume decreased. Based on this study, activated zeolite (AZB-1.0) showed the optimum result: the pore size increased by 4.12847 nm, and the total pore volume did not decrease significantly by 0.04987 cc/g.
NaOH浓度对活化天然沸石特性的影响
研究了0.5 M和1.0 M的NaOH溶液对Blitar City - East爪哇天然沸石的活化作用,考察了未活化和活化沸石的特性,以及活化剂(NaOH溶液)对沸石官能团、元素组成、孔径、比表面积和总孔容的影响。FTIR光谱,XRF和气体物理吸附进行了支持研究。实验数据表明:(1)红外光谱在1250 ~ 780 cm-1处观察到主要官能团,未活化和活化沸石的官能团差异不显著;(2)活化后沸石的元素组成(Si和Al)有降低的趋势;(3)活化后沸石的孔径增大,比表面积和总孔容减小。基于本研究,活化沸石(AZB-1.0)表现出最优的结果:孔径增大4.12847 nm,总孔容没有显著减小0.04987 cc/g。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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17 weeks
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