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镍交换LTA沸石的热致相变作为获得稳定镍尖晶石颜料的替代途径

Thermally Induced Phase Transformation of Ni-Exchanged LTA Zeolite as an Alternative Route of Obtaining Stable Ni-Spinel Pigment.

作者信息

Krsmanović Miomir, Popović Aleksandar, Marković Smilja, Milićević Bojana, Bučevac Dušan, Savić Marjetka, Omerašević Mia

机构信息

Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia.

Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia.

出版信息

Materials (Basel). 2025 Jul 8;18(14):3225. doi: 10.3390/ma18143225.

DOI:10.3390/ma18143225
PMID:40731435
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12301054/
Abstract

This study investigates the thermally induced phase transformation of Ni-exchanged LTA zeolite as a dual-purpose method for nickel immobilization and the synthesis of stable ceramic pigments. The process describes a cost-effective and sustainable alternative to conventional pigment production, aligning with circular economy principles. Upon thermal treatment at temperatures ranging between 900 °C and 1300 °C, Ni-exchanged LTA zeolite undergoes a transformation to NiAlO spinel, confirmed by XRPD, FTIR, and thermal analysis. Initially, NiO is formed, but as the temperature increases, it dissolves and transforms into NiAlO. Colorimetric studies revealed intensified blue pigmentation with increasing temperature, correlating with crystallite growth and structural evolution. SEM analysis showed morphological changes from cubic particles to sintered agglomerates, enhancing pigment stability and hardness. The Ni-LTA sample calcined at 1300 °C showed the highest hue angle, which was consistent with the formation of over 99 wt.% of the nickel aluminate crystalline phase at this temperature. The results demonstrate that Ni-LTA zeolite can be effectively transformed into durable greenish-blue pigments suitable for application in porcelain. This transformation is especially evident at 1300 °C, where a spinel phase (NiAlSiO) forms, with colorimetric values: L = 58.94, a* = -16.08, and b* = -15.90.

摘要

本研究考察了镍交换LTA沸石的热致相变，这是一种用于固定镍和合成稳定陶瓷颜料的两用方法。该工艺描述了一种具有成本效益且可持续的传统颜料生产替代方法，符合循环经济原则。在900℃至1300℃的温度范围内进行热处理时，镍交换LTA沸石转变为NiAlO尖晶石，这通过XRPD、FTIR和热分析得到证实。最初形成NiO，但随着温度升高，它溶解并转变为NiAlO。比色研究表明，随着温度升高，蓝色色素沉着增强，这与微晶生长和结构演变相关。SEM分析显示形态从立方颗粒变为烧结团聚体，提高了颜料的稳定性和硬度。在1300℃煅烧的Ni-LTA样品显示出最高的色相角，这与该温度下形成超过99 wt.%的铝酸镍晶相一致。结果表明，Ni-LTA沸石可有效转化为适用于瓷器的耐用绿蓝色颜料。这种转变在1300℃时尤为明显，此时形成尖晶石相（NiAlSiO），比色值为：L = 58.94，a* = -16.08，b* = -15.90。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/9446f5e7cf45/materials-18-03225-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/3229050fc876/materials-18-03225-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/69cc13d24415/materials-18-03225-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/d8c2c049c9ff/materials-18-03225-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/80eaab52c3dd/materials-18-03225-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/ad48d8f16c2a/materials-18-03225-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/cbf10d27d52c/materials-18-03225-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/c8fdabea1d83/materials-18-03225-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/33235d6d1e8f/materials-18-03225-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/63168ab5cd7d/materials-18-03225-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/9446f5e7cf45/materials-18-03225-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/3229050fc876/materials-18-03225-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/69cc13d24415/materials-18-03225-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/d8c2c049c9ff/materials-18-03225-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/ad48d8f16c2a/materials-18-03225-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/cbf10d27d52c/materials-18-03225-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/c8fdabea1d83/materials-18-03225-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/33235d6d1e8f/materials-18-03225-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/63168ab5cd7d/materials-18-03225-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3e57/12301054/9446f5e7cf45/materials-18-03225-g010.jpg

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