abstract |
The present invention relates to a novel crystalline zeolite SSZ-52x prepared, for example, using a quaternary ammonium cation templating agent having the following structure: In the formula, X- is an anion that does not adversely affect the formation of SSZ-52x. SSZ-52x is useful as a catalyst and exhibits improved durability, in particular with regard to NOx conversion. [Selected figure] Figure 1 |