一、汽车尾气处理 NA-SSZ13分子筛是氨选择性催化还原（NH3-SCR）技术中不可或缺的催化剂载体。这一技术主要用于处理柴油车尾气中的氮氧化物（NOx），因为在柴油车尾气中，氧含量较高，传统的三效催化剂难以实现对NOx的有效还原。而NA-SSZ13分子筛通过负载金属离子（如铜、铁等），可以显著提高SCR反应的活性和选...
一种Pd/Na-SSZ-13被动NOx吸附剂及其制备方法和再生方法本发明提供了一种Pd/NaSSZ13被动NO于吉红李丹
2015. Effects of post-treatment method and Na co-cation on the hydrothermal stability of Cu-SSZ-13 catalyst for the selective catalytic reduction of NOx with NH3[J]. Applied Catalysis B: Environmental,179: 206-212XIE L, LIU F, SHI X, et al. Effects of post-treatment method and Na co...
CU/SSZ-13NH3PERFORMANCEA one-step ion-exchange method is developed to prepare high-performance Cu-SSZ-13 from Na-SSZ-13, by adjusting pH values of Cu salt solution during Cu-exchange. The H concentration has a significant influence on the Cu loading and distribution. In the absence of H,...
Influences of Na+ co-cation on the structure and performance of Cu/SSZ-13 selective catalytic reduction catalystscatalyst bedinternal combustion enginesNOx storage reduction catalystsNOx storage/reduction methodoxygen‐rich conditionsselective catalytic reduction technology...
The effects of alkali ion (Na + and K + ) poisoning on the comprehensive properties of Cu/SSZ-13 were studied. The distribution and quantity of Cu 2+ active components in the catalyst before and after poisoning and the change of acidic sites were explored using NH 3 -TPO, NH 3 -TPD,...
Na co-cationsHydrothermal stabilityThe abatement of harmful nitrogen oxides (NO x ) emission during vehicle cold start is challenging. Passive NO x adsorbers (PNAs) have proven to effectively alleviate NO x emission at low temperatures. In this work, Pd-based Na-SSZ-13 (Pd/Na-13) was ...
Na co-cation addition is found to promote turnover rates of isolated Cu-ions at low reaction temperatures. However, as Cu loadings increase, this promoting effect is compromised by decreases in Cu exchange capacity and hydrothermal stability of the Cu/Na-SSZ-13 catalysts....
Cu-exchanged Al-rich SSZ-13 catalysts with Si/Al=4 from organotemplate-free synthesis have been prepared, and show superior NH 3 -SCR performance with NO conversions above 85% at wide-temperature window ranging from 150 to 650掳C. Cu-Na-SSZ-13 catalysts with varied amount of residual Na ...