Synthesis and characterization of zeolites prepared from industrial fly ash.
Synthesis and characterization of zeolites prepared from industrial fly ash.
复制标题
用工业粉煤灰制备的沸石的合成和表征。
DOI：
10.1007/s10661-014-3815-5
复制
发表时间：
2014-09
影响因子：
3
通讯作者：
Franus, Magorzata
中科院分区：
文献类型：
--
作者：
Franus, Wojciech;Wdowin, Magdalena;Franus, Magorzata
本文介绍了利用粉煤灰生产合成沸石的可能性。将来自Stalowa Wola SA热电厂的合成F级飞灰与氢氧化钠进行24 h水热反应。根据反应条件，形成三种类型的合成沸石：Na-X（20 g粉煤灰，0.5 dm 3的3 mol · dm−3 NaOH，75 °C），Na-P1（20 g粉煤灰，0.5 dm 3的3 mol · dm-3 NaOH，95 ℃）和方钠石（20 g粉煤灰，0.8 dm 3的5 mol · dm-3 NaOH + 0.4 dm 3的3 mol · dm-3 NaCl，95 ℃）。作为合成的材料进行表征，以获得矿物组成（X射线衍射法，扫描电子显微镜-能量色散光谱法），吸附性能（Brunauer-Emmett-Teller表面积，N2等温吸附/脱附），和离子交换容量。沸石制备的最有效的反应是当形成方钠石时，并且X射线衍射测定的沸石定量含量为90重量%，相比之下Na-X为70重量%，Na-P1为75重量%。来自每个合成反应的残余物如下：莫来石、石英和无定形铝硅酸盐玻璃的残余物。以最高比表面积为特征的最佳沸石材料是Na-X，几乎为166 m2 · g-1，而Na-P1和方钠石的比表面积分别为71和33 m2 · g-1。离子交换容量按以下顺序降低：Na-X为1.8 meq · g−1，Na-P1为0.72 meq · g−1，方钠石为0.56 meq · g−1。所得沸石对于市售材料具有竞争力，并且用作工业废水和土壤净化中的离子交换剂。
In this paper, we present the possibility of using fly ash to produce synthetic zeolites. The synthesis class F fly ash from the Stalowa Wola SA heat and power plant was subjected to 24 h hydrothermal reaction with sodium hydroxide. Depending on the reaction conditions, three types of synthetic zeolites were formed: Na-X (20 g fly ash, 0.5 dm3 of 3 mol · dm−3 NaOH, 75 °C), Na-P1 (20 g fly ash, 0.5 dm3 of 3 mol · dm−3 NaOH, 95 °C), and sodalite (20 g fly ash, 0.8 dm3 of 5 mol · dm−3 NaOH + 0.4 dm3 of 3 mol · dm−3 NaCl, 95 °C). As synthesized materials were characterized to obtain mineral composition (X-ray diffractometry, Scanning electron microscopy-energy dispersive spectrometry), adsorption properties (Brunauer-Emmett-Teller surface area, N2 isotherm adsorption/desorption), and ion exchange capacity. The most effective reaction for zeolite preparation was when sodalite was formed and the quantitative content of zeolite from X-ray diffractometry was 90 wt%, compared with 70 wt% for the Na-X and 75 wt% for the Na-P1. Residues from each synthesis reaction were the following: mullite, quartz, and the remains of amorphous aluminosilicate glass. The best zeolitic material as characterized by highest specific surface area was Na-X at almost 166 m2 · g−1, while for the Na-P1 and sodalite it was 71 and 33 m2 · g−1, respectively. The ion exchange capacity decreased in the following order: Na-X at 1.8 meq · g−1, Na-P1 at 0.72 meq · g−1, and sodalite at 0.56 meq · g−1. The resulting zeolites are competitive for commercially available materials and are used as ion exchangers in industrial wastewater and soil decontamination.
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DOI：
10.1007/s11356-013-1877-5
发表时间：
2013-11
期刊：
Environmental science and pollution research international
影响因子：
--
作者：
Chałupnik S;Franus W;Wysocka M;Gzyl G
通讯作者：
Gzyl G
影响因子：
7.4
作者：
Izidoro, Juliana de C.;Fungaro, Denise A.;Wang, Shaobin
通讯作者：
Wang, Shaobin
影响因子：
3
作者：
Chaudhary, Doongar R.;Ghosh, Arup
通讯作者：
Ghosh, Arup
影响因子：
5.2
作者：
Derkowski, Arkadiusz;Franus, Wojciech;Czimerova, Adriana
通讯作者：
Czimerova, Adriana
影响因子：
10.5
作者：
De la Varga, Igor;Castro, Javier;Weiss, Jason
通讯作者：
Weiss, Jason