New Lead Borate Pb2B6O11 and Possibility of Synthesis of Lead Analogue of Maleevite in the PbO–BaO–B2O3–SiO2 System

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS

Glass Physics and Chemistry Pub Date : 2024-09-25 DOI:10.1134/S1087659624600108

L. A. Gorelova, V. A. Yukhno, Yu. S. Mironova, O. S. Vereshchagin, M. G. Krzhizhanovskaya

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Abstract

The PbO–BaO–B₂O₃–SiO₂ system is studied using solid-state synthesis and melt crystallization methods and attempts are made to obtain samples of the maleevite (BaB₂Si₂O₈)—lead maleevite (PbB₂Si₂O₈) series. Due to the strong tendency of Pb-containing borosilicate materials to form glass, a lead-enriched analogue of maleevite is not obtained. In the study, a new lead borate Pb₂B₆O₁₁ (sp. gr. P–1, a = 6.582(1) Å, b = 6.593(1) Å, c = 11.310(2) Å, α = 98.29(1)°, β = 90.65(1)°, γ = 119.10(2)°, V = 422.4(1) Å³) and a series of solid solutions (Ba_{1 –} _xPb_x)₃B₆Si₂O₁₆ (x = 0.2, 0.4, 0.6) are synthesized and characterized for the first time. The layered compound Pb₂B₆O₁₁ has a new structural type, while the solid solution (Ba_{1 – x}Pb_x)₃B₆Si₂O₁₆ is a structural analogue of the previously known Ba₃B₆Si₂O₁₆.

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新型硼酸铅 Pb2B6O11 以及在 PbO-BaO-B2O3-SiO2 体系中合成马来石铅类似物的可能性

利用固态合成和熔融结晶方法对 PbO-BaO-B2O3-SiO2 体系进行了研究，并尝试获得麦饭石（BaB2Si2O8）-铅麦饭石（PbB2Si2O8）系列样品。由于含铅硼硅酸盐材料极易形成玻璃，因此无法获得富铅的麦饭石类似物。在这项研究中，一种新的硼酸铅 Pb2B6O11 （sp. gr. P-1, a = 6.582(1) Å, b = 6.593(1) Å, c = 11.310(2) Å, α = 98.29(1)°, β = 90.65(1)°, γ = 119.10(2)°, V = 422.4(1) Å3) 和一系列固溶体 (Ba1 - xPbx)3B6Si2O16 (x = 0.2, 0.4, 0.6) 的合成，并首次对其进行了表征。层状化合物 Pb2B6O11 具有新的结构类型，而固溶体 (Ba1 - xPbx)3B6Si2O16 是之前已知的 Ba3B6Si2O16 的结构类似物。

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来源期刊

Glass Physics and Chemistry 工程技术-材料科学：硅酸盐

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.