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通过扫描电子显微镜（SEM）和断层扫描成像对硝酸铵（V）的形态和孔隙率进行评估。

Evaluation of Ammonium Nitrate(V) Morphology and Porosity Obtained by SEM and Tomography Imaging.

作者信息

Biessikirski Andrzej, Kaczmarczyk Grzegorz Piotr, Kuterasiński Łukasz, Kolano Malwina, Pytlik Mateusz

机构信息

Faculty of Civil Engineering and Resource Management, AGH University of Krakow, 30-059 Krakow, Poland.

Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Krakow, Poland.

出版信息

Materials (Basel). 2024 Jun 27;17(13):3156. doi: 10.3390/ma17133156.

DOI:10.3390/ma17133156
PMID:38998239
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11242157/
Abstract

This paper presents an evaluation of the morphology of fertilizer-grade and prill-grade ammonium nitrate(V). All samples were analyzed using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and tomography techniques. The XRD results revealed that despite various provenances, all samples exhibited similar P symmetry and diffraction patterns. SEM images indicated that prill ammonium nitrate(V) showed a more complex external and internal crystal structure than fertilizer-grade counterparts. Furthermore, tomography analysis revealed that each prill ammonium nitrate(V) sample demonstrated distinct porosity characteristics, including varying pore sizes and distribution patterns. Both methods confirmed that fertilizer-grade ammonium nitrate(V) in the cross-section had a pumice structure, and porous prill ammonium nitrate(V) had a rather complex structure, with a central cavity observed only in the case of Sample 4. The appearance of a central cavity can be explained by the different conditions or manufacturing processes of porous prill ammonium nitrate(V). Moreover, the fertilizer-type ammonium nitrate(V) exhibited the lowest surface-to-volume ratio of ca. 21% compared to the porous-type ammonium nitrate(V). This, together with the lowest surface area of ca. 116 mm, confirmed the lowest absorption capacity of the fertilizer-grade ammonium nitrate(V) disclosed by the ammonium nitrate(V) producer.

摘要

本文对肥料级和造粒级硝酸铵（V）的形态进行了评估。所有样品均采用X射线粉末衍射（XRD）、扫描电子显微镜（SEM）和断层扫描技术进行分析。XRD结果表明，尽管来源各异，但所有样品均呈现出相似的P对称性和衍射图谱。SEM图像显示，造粒硝酸铵（V）的外部和内部晶体结构比肥料级硝酸铵更为复杂。此外，断层扫描分析表明，每个造粒硝酸铵（V）样品都表现出独特的孔隙特征，包括不同的孔径和分布模式。两种方法均证实，肥料级硝酸铵（V）的横截面具有浮石结构，多孔造粒硝酸铵（V）具有相当复杂的结构，仅在样品4的情况下观察到中心腔。中心腔的出现可以用多孔造粒硝酸铵（V）的不同条件或制造工艺来解释。此外，肥料型硝酸铵（V）的表面积与体积比最低，约为21%，相比之下，多孔型硝酸铵（V）的表面积最低，约为116平方毫米，这证实了硝酸铵（V）生产商披露的肥料级硝酸铵（V）的吸收能力最低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/954d3e9aa6b8/materials-17-03156-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/b25ae36b9563/materials-17-03156-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/b75a31755f72/materials-17-03156-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/eca502e3d204/materials-17-03156-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/954d3e9aa6b8/materials-17-03156-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/b25ae36b9563/materials-17-03156-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/b75a31755f72/materials-17-03156-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/eca502e3d204/materials-17-03156-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0a69/11242157/954d3e9aa6b8/materials-17-03156-g004a.jpg

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