SSZ-13 zeolite with CHA structure has been synthesized rapidly and efficiently via interzeolite conversion of LTA zeolite in the presence of N, N, N-trimethyladamantammonium hydroxide (TMAdaOH) under hydrothermal conditions. Crystallization processes of LTA-CHA interzeolite conversion at different temperatures were investigated in detail by XRD, SEM, FT-IR, etc. The results show that the use of LTA zeolite greatly increases the crystallization rate of CHA zeolite due to the generation of locally ordered aluminosilicate species via the dissolution of LTA zeolite. The crystallization time of SSZ-13 zeolite is shortened to 5 h at 180 ℃. Moreover, the calcined SSZ-13 zeolite possesses high crystallinity, uniform spherical morphology and high surface area. In addition, catalytic test in the selective catalytic reduction of NO_x with NH₃ (NH₃-SCR) shows that copper exchanged CHA (Cu-SSZ-13) exhibits comparable catalytic properties to those of Cu-SSZ-13 obtained from the conventional methods.

在水热条件下，在N，N，N-三甲基金刚烷铵氢氧化物（TMAdaOH）存在下，通过LTA沸石的沸石间转化，可以快速有效地合成具有CHA结构的SSZ-13沸石。通过XRD，SEM，FT-IR等研究了不同温度下LTA-CHA分子筛转化的结晶过程。结果表明，LTA沸石的使用由于局部有序生成大大提高了CHA沸石的结晶速率。铝硅酸盐通过LTA沸石的溶解来形成物种。在180℃下，SSZ-13沸石的结晶时间缩短到5 h。而且，煅烧的SSZ-13沸石具有高结晶度，均匀的球形形态和高表面积。另外，用NH₃（NH₃-SCR）选择性催化还原NO_x的催化试验表明，铜交换的CHA（Cu-SSZ-13）表现出与常规方法获得的Cu-SSZ-13相当的催化性能。方法。