Liu, Huan; Xiong, Zhuo; Peng, Rong; Gong, Bengen; Chang, Lin; Yang, Jianping; Zhao, Yongchun; Zhang, Junying published an article in 2021. The article was titled 《Elemental mercury removal from simulated coal-fired flue gas by modified tonstein in coal seam》, and you may find the article in Fuel.Category: copper-catalyst The information in the text is summarized as follows:
Tonstein in coal seam (TCS) is a kind of mining solid waste, which was developed to a novel adsorbent (CuBr2-TCS) by using copper bromide modification. In this paper, CuBr2-TCS was subjected to elemental mercury (Hg0) removal experiment in simulated coal-fired flue gas (SFG). Several characterization methods were used to determine the mineralogical characteristics of TCS and reaction mechanisms. In-depth, the Hg0 removal performances of CuBr2-TCS under different flue gas components were explored. The results revealed that CuBr2-TCS exhibited 92.1% and 78.3% Hg0 removal efficiency in dry and wet SFG, resp. HCl and O2 facilitated Hg0 removal performance of CuBr2-TCS by supplementing oxygen atoms and halogens, resp., accompanying some intermediate transition products such as Cu2OBr2. SO2 played a serious suppressive role. SO2 acting alone or NO and SO2 acting simultaneously caused irreversible changes in the surface functional groups that formed active sites with NO. However, the thermal stability of the adsorbed mercury on the adsorbent which was spent in N2 + SO2 + O2 atmosphere became better. In addition, the spent adsorbent that first went through the Hg0 removal process in N2 + NO atm., exhibited higher Hg0 removal efficiency in N2 + SO2 + NO atm. than that first reacted in N2 + SO2 atmosphere. CuBr2-TCS is a cost-effective adsorbent for the Hg0 abatement from the coal-fired flue gas (CFG). In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Category: copper-catalyst)
Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Category: copper-catalyst
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”