A series of Sb-doped CeVO₄ samples were synthetized by hydrothermal method and used in selective catalytic reduction of NO with NH₃. Contrasted with other catalysts, Sb₂CeVO₄ possessed superior NH₃-SCR activity and excellent SO₂ tolerance. Besides, the characterization results testified that Sb species in Sb₂CeVO₄ could reduce the crystallization of CeVO₄, and improve the surface acidity and reducibility. Moreover, the existence of Sb³⁺ was beneficial to generate more surface adsorbed oxygen species. Based on the in situ DRIFT spectra, more ad-NH₃ and ad-NO_x species with higher reactivity were obtainable on Sb₂CeVO₄ catalyst compared with that on CeVO₄ catalyst, which also contributed to enhancing the SCR activity by Langmuir-Hinshelwood (L-H) mechanism effectively.

通过水热法合成了一系列掺Sb的CeVO ₄样品，并用于NH ₃选择性催化还原NO 。与其他催化剂相比，Sb ₂ CeVO ₄具有优异的NH ₃ -SCR活性和出色的SO ₂耐受性。此外，表征结果证实，以Sb的Sb物种₂ CEVO ₄可以减少CEVO的结晶₄，和提高表面酸度和还原性。而且，Sb ³⁺的存在有利于产生更多的表面吸附氧。基于原位DRIFT光谱，更多ad-NH₃和广告-NO _X与较高反应性的物种是对可获得的Sb ₂ CEVO ₄与上CEVO比较催化剂₄催化剂，这也有助于提高由朗缪尔-欣谢尔伍德（LH）机制有效的SCR活性。