以 2 7Al章动及二维多量子核磁共振方法研究了 5 5 0 ,6 0 0 ,6 5 0 ,70 0℃焙烧丝光沸石中的铝配位状态。实验表明一维核磁共振谱中的 30 ppm宽峰可归属为扭曲四配位铝。对 6 5 0和 70 0℃焙烧样品 ,生成少量五配位铝。一维2 7Al章动核磁共振实验表明 6 5 0℃焙烧样品中的 30 ppm信号为强四极作用的铝配位组分。在丝光沸石焙烧过程中 ,骨架四配位铝逐渐转变为扭曲四配位 ,因四极展宽而在 30 ppm出现宽峰。随焙烧温度升高至 6 5 0℃以上 ,逐渐产生五配位铝。 The coordination states of aluminum in the calcined mordenite at 550, 600, 650, 700 ℃ were investigated by 2 7 Al nutations and two-dimensional multi-quantum-magnetic resonance. Experiments show that the one-dimensional NMR spectrum of the 30 ppm peak can be attributed to distorted tetracoordinate aluminum. The samples were calcined at 650 and 700C to produce a small amount of pentacoordinated aluminum. The one-dimensional 2 7 Al chapter kinetic nuclear magnetic resonance experiment shows that the 30 ppm signal in the 650 ℃ calcined sample is a strong quadrupolar aluminum coordination component. During the mordenite calcination, the framework tetrahedrally coordinated aluminum gradually transforms into a distorted quadruplex with a broad peak at 30 ppm due to quadrupole broadening. With the calcination temperature increased to 650 ℃ above, and gradually produce five coordination aluminum.