Abstract：
The removal of NO has always been a hot issue in the treatment of coal-fired flue gas. In this paper, a hydrothermal synthesis method was used to prepare porous denitration catalysts with polycarboxyl organic isomers (trimellitic acid, phthalic acid, and benzoic acid). And then developed as the NO removing catalysts for low temperature selective catalytic reduction (SCR) with NH3. XRD, BET, SEM, FTIR, XPS, Raman, H2-TPR, NH3-TPD and TG were used to analyze the crystallinity, microscopic morphology, surface functional groups and metal content. The results showed that: (1) From the crystal structure analysis, the catalyst prepared with 1,3,5 and 1,2,4-benzenetricarboxylic acid as ligands (1,3,5-A and 1,2,4-B) was Cu-BTC. (2) 1,3,5-A catalyst had a huge specific surface area, up to 1421.32 m2/g, and a pore volume up to 0.5798 cm3/g. (3) The prepared catalysts were applied to NH3-SCR denitration, and the catalyst with Cu-BTC structure had relatively high catalytic performance, and the overall catalytic capacity showed an increasing trend with the temperature. (4) 1,3,5-A catalyst had stability and catalytic activity. When the temperature was 270 °C, the denitration efficiency reached 83.87%. And within 8 h, the denitration efficiency was stable up to 82%.
摘要：
NO的去除一直是燃煤烟气治理中的热点问题。在本文中,采用水热合成法制备具有多羧基有机异构体（偏苯三酸，邻苯二甲酸,和苯甲酸）。然后开发了用于NH3低温选择性催化还原（SCR）的NO去除催化剂。XRD,BET,SEM,FTIR,XPS,拉曼,H2-TPR,NH3-TPD和TG用于分析结晶度，微观形态，表面官能团和金属含量。结果表明:(1)从晶体结构分析,以1,3,5和1,2,4-苯三羧酸为配体(1,3,5-A和1,2,4-B)制备的催化剂为Cu-BTC。(2)1,3,5-A催化剂具有巨大的比表面积,高达1421.32m2/g，和高达0.5798cm3/g的孔体积。(3)将制备的催化剂应用于NH3-SCR脱硝,Cu-BTC结构的催化剂具有较高的催化性能,整体催化能力随温度的升高而呈增加趋势。(4)1,3,5-A催化剂具有稳定性和催化活性。当温度为270℃时，脱硝效率达到83.87%。在8小时内，脱硝效率稳定达82%。
