用于模拟四价胺固定化的玄武岩玻璃的Ce/Ce结构与定量分析及稳定性分析

Structure and quantification of Ce/Ce and stability analysis of basaltic glasses for the immobilization of simulated tetravalent amines.

作者信息

Tong Qin, Liu Song, Liang Jun, Zhang Qi, Liao Meiying

机构信息

College of Mechanical and Electrical Engineering, Mianyang Teachers' College, Mianyang, 621000, China.

Sichuan Jiuzhou Electric Group Co., Ltd., Mianyang, 621000, China.

出版信息

Sci Rep. 2025 Jan 17;15(1):2288. doi: 10.1038/s41598-025-86571-1.

DOI:10.1038/s41598-025-86571-1

PMID:39833281

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11747504/

Abstract

Basaltic glass was prepared via the solid-state melt method, using Ce to simulate tetravalent actinides. The structure, thermal stability and leaching characteristics of basaltic glass with different contents of CeO were investigated. The XRD/SEM-EDX/Raman results showed that the simulated waste loading of CeO in basaltic glass reached ~ 18 wt%, and CeO crystals precipitated when the CeO content reached 20 wt%. XPS analysis revealed that approximately half of the Ce ions in the basaltic glass doped with CeO were reduced to Ce ions. The DSC results showed that the thermal stability increased with increasing CeO 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 NL was 2 orders of magnitude lower than those of the other elements.

摘要

通过固态熔融法制备了玄武岩玻璃，使用铈来模拟四价锕系元素。研究了不同CeO含量的玄武岩玻璃的结构、热稳定性和浸出特性。XRD/SEM-EDX/拉曼结果表明，玄武岩玻璃中CeO的模拟废物负载量达到约18 wt%，当CeO含量达到20 wt%时会析出CeO晶体。XPS分析表明，掺杂CeO的玄武岩玻璃中约一半的铈离子被还原为铈离子。DSC结果表明，热稳定性随CeO含量的增加而提高。ASTM产品一致性测试（PCT）结果表明，所有样品都具有良好的抗浸出性。其中，28天后铈的标准质量损失最大：归一化溶出率比其他元素低2个数量级。