2021年8月1日 · Effect of water on o-DCB oxidation depends on surface V species and temperature. N 2O production in SCR decreases in the presence of water. Water prevents the formation of deactivating species in o-DCB oxidation. Water competes with o-DCB for the adsorption sites.

2023年11月15日 · The possible reaction mechanisms for NH 3-SCR and the catalytic oxidation of o-DCB over the CeCoO x-PVP@TiO 2 catalyst were proposed based on in situ DRIFTS experiments. This work provides an efficient strategy to design advanced catalysts for the elimination of dioxins and NO x.

2002年12月20日 · The present paper reports on the study of the adsorption and thermal evolution of ortho-dichlorobenzene (o-DCB), 2-chloropropane (2CP), and dibenzofuran (DBF) over a model V 2 O 5-MoO 3-TiO 2 catalyst from room temperature up to the typical temperature of the SCR process. The aim of this work is to have information on the surface chemistry of ...

2022年11月2日 · Their catalytic performances were evaluated by the oxidation-reduction performance of ortho-dichlorobenzene (o-DCB) and NO/NH3. The modification of Wox and MoOx could promote catalytic activity by accelerating the transformation of V5+/V4+ and enriching the strong acid sites.

2023年6月28日 · Developing efficient and stable catalysts for synergistic removal of NOx and dioxin has always been key for controlling air pollution. For this, the hydrotalcite-like structured Cr (x)/LDO catalysts were successfully synthesized for synergistic removal of NOx and o -DCB using a co-precipitation method.

性能测试结果表明，Cr (0.25)/LDO催化剂具有最佳的催化性能， 250℃时NOx和o -DCB转化率分别为89%和82%。 此外，通过设计-研究了Cr (0.25)/LDO催化剂表面NH 3 -SCR和o-DCB催化氧化的反应机理，以及两个反应之间的相互作用。 原位漂移实验。 结果表明NH 3 -SCR反应遵循E-R和L-H反应机制。 提出o -DCB氧化过程的反应路径为： o -DCB→氯化酚盐→苯醌→马来酸、甲酸、乙酸等→H 2 O、CO 2、HCl。 此外，NH 3 -SCR与o -DCB的催化氧化之间存在相互作用。 …

摘要 本文介绍并讨论了 V2O5-MoO3-TiO2 模型 SCR 催化剂与邻二氯苯 (o-DCB) 和二苯并呋喃 (DBF) 接触所产生的吸附物质光谱及其随温度的演变。 二氯苯可能通过氯原子弱吸附在路易斯酸位点上。 在室温下，二氯苯对氯酚酯物种的非常快速的亲核取代已经发生。 相反，二苯并呋喃的吸附是分子的，可能是通过路易斯位点上的氧原子。 两种分子的芳环都倾向于稍后被氧化以产生羧酸盐种类。 与氯丙烷的平行实验表明，脱氯化氢很容易发生，盐酸的吸附很弱，丙烯可以被进 …

This study investigates the influences of typical chlorine-containing inorganic/organic compounds (i.e. hydrogen chloride (HCl) and o-dichlorobenzene (o-DCBz)) on NH 3-SCR of NO over MnO x /TiO 2 and MnO x-CeO 2 /TiO 2 catalysts at low temperatures (100−250 °C). The results indicate the presence of HCl severely inhibits the NH 3-SCR reaction

2017年5月15日 · A series of VO x /TiO 2 /ZSM5 were prepared in order to enhance the acid functionalities of commercially used VO x /TiO 2 for the combined abatement of NO and o-dichlorobenzene (o-DCB, model molecule to simulate dioxins and furans) from the off-gases of a Municipal Solid Waste (MSW) incinerator plant.

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