文章基本信息

标题：Efficient Sn Recovery from SnO2 by Alkane (CxHy=2x+2, 0 ≤ x ≤ 4) Reduction
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作者：Hyesung An ; Mi Yoo ; Hyunwoo Ha 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-9
DOI：10.1038/s41598-019-53389-7
出版社：Springer Nature
摘要：We study the mechanism of alkane reduction of SnO 2 for efficient low-temperature recovery of Sn from SnO 2 . Based on thermodynamic simulation results, we comparatively analyze the reduction behavior and the efficiency of SnO 2 reduction by H 2 and alkanes (C x H y=2x+2 , 0 ≤ x ≤ 4). We found that alkanes (n·C x H y ) with the higher nx generally complete the reduction of SnO 2 (T 100 ) at the lower temperature. Moreover, the T 100 of the SnO 2 reduction by alkanes (n·C x H y ) was decreased from the T 100 of pure hydrogen with the same amount of hydrogen atoms (n·H y ). We found that the concentration of a gas phase product mixture, the amount of the produced solid carbon, and the T 100 complementary vary as a function of the nx and ny, the total amount of carbon and hydrogen atoms in the reducing gas phase molecules. Our results demonstrate a viability of the low temperature reduction method of SnO 2 by alkanes for efficient recovery of Sn from SnO 2 , which can be applied for Sn recovery from Sn containing industrial wastes or Sn ores with economic value added that is held by the co-produced H 2 .