Sun Yashengnan, Zhou Xihua, Xin Tianyu, Bai Gang, Wang Yumeng, Li Xianlin, Mufeng Xiao
College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China.
Key Laboratory of Mine Thermodynamic Disaster and Control of Ministry of Education, Huludao 125105 China.
ACS Omega. 2022 Mar 29;7(14):12390-12400. doi: 10.1021/acsomega.2c01002. eCollection 2022 Apr 12.
In view of the problem that excessive CO in underground coal mine space can easily lead to a large number of casualties, Cu-Mn-Sn water-resistant eliminators with different Sn contents were prepared by a co-precipitation method. The activity of the eliminators was analyzed by using an independently developed activity testing platform, N adsorption and desorption, XRD, SEM, XPS, and FTIR to characterize the activity factors and water resistance. The results showed that Cu-Mn-Sn-20 with 20% Sn content had the highest activity, which was 3.23 times that of Cu-Mn. The main reason for the increased activity is that Cu-Mn-Sn-20 doped with 20% Sn provides a larger specific surface area and more active sites and reduces the pore size, so that the crystallization degree of CuMnO is lower. The doping of 20% Sn reduces the absorption of lattice water and coordination water and improves the water resistance of Cu-Mn-Sn-type eliminators. The Cu-Mn-Sn-20 water-resistant eliminator is used to quickly eliminate CO in underground coal mines, which is of great significance for the rescue workers in underground coal mines after disasters.
鉴于地下煤矿空间中过量的一氧化碳容易导致大量人员伤亡的问题，采用共沉淀法制备了不同锡含量的铜锰锡耐水消除剂。利用自主研发的活性测试平台对消除剂的活性进行分析，并通过氮气吸附脱附、XRD、SEM、XPS和FTIR对活性因子和耐水性进行表征。结果表明，锡含量为20%的Cu-Mn-Sn-20活性最高，是Cu-Mn的3.23倍。活性提高的主要原因是掺杂20%锡的Cu-Mn-Sn-20具有更大的比表面积和更多的活性位点，且减小了孔径，使得CuMnO的结晶度较低。20%锡的掺杂降低了晶格水和配位水的吸附，提高了铜锰锡型消除剂的耐水性。Cu-Mn-Sn-20耐水消除剂用于快速消除地下煤矿中的一氧化碳，这对煤矿灾害后的救援人员具有重要意义。
