Structure and quantification of Ce3+/Ce4+ and stability analysis of basaltic glasses for the immobilization of simulated tetravalent amines

被引：1

作者：

Tong, Qin ^{[1
]}

Liu, Song ^{[2
]}

Liang, Jun ^{[1
]}

Zhang, Qi ^{[3
]}

Liao, Meiying ^{[1
]}

机构：

[1] Mianyang Teachers Coll, Coll Mech & Elect Engn, Mianyang 621000, Peoples R China

[2] Sichuan Jiuzhou Elect Grp Co Ltd, Mianyang 621000, Peoples R China

[3] Chengdu Technol Univ, Sch Intelligent Mfg, Chengdu 610000, Peoples R China

来源：

SCIENTIFIC REPORTS | 2025年 / 15卷 / 01期

关键词：

CeO2; Basaltic glass; Leaching characteristics; XPS; OXIDATION; CEO2;

D O I：

10.1038/s41598-025-86571-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Basaltic glass was prepared via the solid-state melt method, using Ce4+ to simulate tetravalent actinides. The structure, thermal stability and leaching characteristics of basaltic glass with different contents of CeO2 were investigated. The XRD/SEM-EDX/Raman results showed that the simulated waste loading of CeO2 in basaltic glass reached similar to 18 wt%, and CeO2 crystals precipitated when the CeO2 content reached 20 wt%. XPS analysis revealed that approximately half of the Ce4+ ions in the basaltic glass doped with CeO2 were reduced to Ce3+ ions. The DSC results showed that the thermal stability increased with increasing CeO2 content. The ASTM product consistency test (PCT) results indicated that all the samples had good leaching resistance. Among them, the standard mass loss of Ce was the greatest after 28 days: The NLCe was 2 orders of magnitude lower than those of the other elements.

引用

页数：9

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