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...
NA-SSZ13(或称为SSZ-13)是一种常用于汽车尾气处理系统中的催化剂材料,特别是在选择性催化还原(SCR)系统中,用于减少柴油车尾气中的氮氧化物(NOx)排放。以下是NA-SSZ13(SSZ-13)的一些主要应用特点: 高催化活性:NA-SSZ13(SSZ-13)具有出色的催化活性,能够高效地促进氨(NH3)与NOx之间的反应,将有害的NOx转化为...
NA-SSZ13分子筛作为一种重要的催化剂材料,在多个领域如汽车尾气处理、甲醇制低碳烯烃(MTO)等中展现出优异的性能。然而,它也存在一些缺点,主要包括以下几个方面: 合成成本高: 传统的NA-SSZ13分子筛合成方法通常需要昂贵的有机模板剂(如N,N,N-三甲基金刚烷氢氧化铵等),这增加了生...
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: 206-212Effects of post-treatment method and Na co-cation on the hydrothermal stability ...
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....