CO induces the reduction of Mo in the glass liquid to molybdenum carbide to form glass defects in the hybrid furnace

IF 3.2 3区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of Non-crystalline Solids Pub Date : 2024-11-23 DOI:10.1016/j.jnoncrysol.2024.123337
Di Ao, YanXin Li, Xuan Hu, XiGuang Zhou, LiFan Wu, Liang Song, Tuo Wang, JinLu Jiang, XiaoJian Zhang, XiaoYong Kou
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Abstract

In this work, a ceramic platinum continuous melting optical glass furnace containing oxygen combustion was taken as an example to analyze the causes of a unique glass defect. It was finally determined that the defect in the glass was composed of the top condensate, the brick skeleton, and the Mo2C generated in the glass liquid. It was determined that the monoclinic Al2O3 and ZrO2 phase in the brick desorbed the surface hydroxyl and water molecules under the high temperature environment inside the furnace, forming Lewis acid sites with the ability to adsorb electrons. CO was adsorbed on the surface of Al2O3 and ZrO2 by Lewis acid sites and fell into the glass liquid with the top condensate and the brick skeleton.CO then reduced Mo ions in the glass melt to form Mo2C, causing the formation of the defects in the glass.
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二氧化碳促使玻璃液中的钼还原成碳化钼,从而在混合炉中形成玻璃缺陷
本研究以含氧燃烧的陶瓷铂连续熔化光学玻璃炉为例,分析了一种独特玻璃缺陷的成因。最终确定玻璃缺陷由顶部冷凝物、砖骨架和玻璃液中生成的 Mo2C 组成。经测定,砖中的单斜Al2O3和ZrO2相在炉内高温环境下解吸了表面羟基和水分子,形成了具有吸附电子能力的路易斯酸位点。CO 被路易斯酸位点吸附在 Al2O3 和 ZrO2 表面,并随顶部冷凝物和砖骨架一起落入玻璃液中,然后在玻璃熔体中还原 Mo 离子形成 Mo2C,导致玻璃缺陷的形成。
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来源期刊
Journal of Non-crystalline Solids
Journal of Non-crystalline Solids 工程技术-材料科学:硅酸盐
CiteScore
6.50
自引率
11.40%
发文量
576
审稿时长
35 days
期刊介绍: The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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