Removal of Gaseous Elemental Mercury by Cylindrical Activated Coke Loaded with CoOx-CeO2 from Simulated Coal Combustion Flue Gas

Autor:	Xunan Zhang, Guangming Zeng, Yin’e Xie, Lingkui Zhao, Huiyu Wu, Jie Zhang, Caiting Li, Yan Wang
Rok vydání:	2015
Předmět:	Thermogravimetric analysis Flue gas Fuel Technology X-ray photoelectron spectroscopy Chemistry Scanning electron microscope General Chemical Engineering Analytical chemistry Energy Engineering and Power Technology Coal combustion products Coke Fourier transform infrared spectroscopy Cobalt oxide
Zdroj:	Energy & Fuels. 29:6747-6757
ISSN:	1520-5029 0887-0624
DOI:	10.1021/acs.energyfuels.5b00871
Popis:	Co–Ce mixed oxides were loaded on commercial cylindrical activated coke granules (CoCe/AC) by an impregnation method to remove gaseous elemental mercury (Hg0) from simulated coal combustion flue gas at low temperature (110–230 °C). Effects of the Co/Ce molar ratio in Co–Ce mixed oxides, mixed oxides loading value, reaction temperature, and flue gas components (O2, NO, SO2, H2O) on Hg0 removal efficiency were investigated, respectively. Brunauer–Emmett–Teller analysis, X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) analysis were employed to analyze the characteristics of the samples. Results showed that up to 92.5% of Hg0 removal efficiency could be obtained over Co4.5Ce6/AC at 170 °C. The remarkably high Hg0 removal ability of Co4.5Ce6/AC mainly depended on the synergetic effect between cobalt oxide and ceria. Additionally, different with the pure N2 condition, the existence of O2 and NO...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3706e9566d3143e4cfc7685820a4a1bb https://doi.org/10.1021/acs.energyfuels.5b00871 Zobrazit plný text záznamu