Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NO_x using NH₃ (NH₃-SCR). A WO₃@CeO₂ catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH₃-SCR of NO_x reaction. The obtained WO₃@CeO₂ catalyst with hollow structure exhibit higher NO_x conversion (88%) than traditional WO₃-CeO₂ catalyst (40%) at 200 °C, and superior SO₂ and H₂O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.

构建中空结构的基于Ce的催化剂是导致用于选择性催化还原NO的有效的催化系统的有效方法_X使用NH ₃（NH ₃ -SCR）。以碳球为硬模板成功开发了中空结构的WO ₃ @CeO ₂催化剂，并测试了NO _x反应的NH ₃ -SCR 。所获得的具有空心结构的WO ₃ @CeO ₂催化剂在200°C下比传统的WO ₃ -CeO ₂催化剂（40％）具有更高的NO _x转化率（88％），并且具有优异的SO ₂和H ₂鉴于其较高的比表面积，可还原的W物种，化学吸附的氧物种和酸部位的比量增加，在300°C时的O耐受性。