000			01821nab a2200205 4500
005			20260520000816.0
008			260224s2009 xxu
245	0	0	_aMercury oxidation over a vanadia-based selective catalytic reduction catalyst
260			_a _b _cene. 2009
270			_a15/05/2009 ; 15/04/2009
300			_a6 p. ; 253-259
520			_aTranscripción del resúmen publicado por el autor: The process of the reaction among elemental mercury (Hg0) and reactive flue gas components across the selective catalytic reduction (SCR) catalyst was studied in a laboratory-scale reactor. Prepared vanadia-based SCR catalysts were characterized and analyzed to understand the potential reaction pathways. Mercury oxidation was observed when pro-exposure of the SCR catalyst to HCl, followed by passing through Hg0/N2 in the absence of gas-phase HCl. At testing conditions, Hg0 was found to desorb from the catalyst surface by adding HCl to the gas steam, which implies that HCl adsorption onto the SCR catalyst is strong relative to the mercury. Surface analysis verified the absorption of HCl onto the SCR catalysts, and the potential reaction pathways were proposed. Indeed, the monomeric vanadyl sites on the catalyst surface were found to be responsible for the adsorption of both Hg0 and HCl, which means they are active for mercury oxidation. Furthermore, the detailed Langmuir-Hinshelwood mechanism was proposed to explain the mercury oxidation on the SCR catalyst, where reactive Cl generated from adsorbed HCl reacts with adjacent Hg0.
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aHe, Sheng _940887
100	1		_aZhou, Jinsong _938081
100	1		_aZhu, Yanqun _940888
999			_c169564 _d169564
856			_uhttp://pubs.acs.org/doi/full/10.1021/ef800730f