New vanadium supported onto mixed molybdenum-titanium pillared clay catalysts “V/(Mo-Ti)-PILCs” with variable quantities of Mo were investigated for the low temperature SCR-NO by NH₃. The (Mo-Ti)-PILC supports, prepared by co-intercalation route, and the V/(Mo-Ti)-PILC catalysts, obtained by the impregnation method, have been characterized by means of XRD, N₂ adsorption-desorption, IR-spectroscopy, NH₃-TPD and H₂-TPR. The results have shown the success of the intercalation process through the increase of the basal spacing, the surface area and the porosity of the clay. The simultaneous incorporation of Mo-Ti cationic species and the vanadium deposition have successfully modified the acidic and the redox properties of the pillared materials. In SCR-NO by NH₃, the NO conversion was significantly increased, especially at low temperature, after the addition of vanadium. Over the catalyst containing 4 wt% of Mo and 2 wt% of V, NO conversion reached 50% at around 250 °C and exceeded 85% at 400 °C with 100% N₂ selectivity. For higher Mo content (8 wt%), N₂O formation, in trace amount, was observed above 375 ° C.

对于NH _3的低温SCR-NO，研究了负载于钼量可变的钼钛混合柱撑混合粘土催化剂“ V /（Mo-Ti）-PILCs”上的新钒。借助XRD，N ₂吸附-脱附对通过共嵌入途径制备的（Mo-Ti）-PILC载体和通过浸渍法获得的V /（Mo-Ti）-PILC催化剂进行了表征。红外光谱，NH ₃ -TPD和H ₂-TPR。结果表明，通过增加基距，粘土的表面积和孔隙率可以成功地进行插层过程。Mo-Ti阳离子物种的同时掺入和钒的沉积已成功地改变了带柱材料的酸性和氧化还原特性。在使用NH _3的SCR-NO中，添加钒后，尤其在低温下，NO转化率显着提高。在含有4wt％的Mo和2wt％的V的催化剂上，NO转化率在约250℃下达到50％，并在400℃下以100％的N ₂选择性超过85％。对于较高的Mo含量（8 wt％），在375°C以上观察到痕量N ₂ O的形成。