Silicoaluminophosphate, method for producing the same, and solid acid catalyst comprising the same

摘要

The present invention relates to a silicoaluminophosphate represented by the following formula (1) and having a powder X-ray diffraction pattern shown in Table 1 below:
(SixAlyPz)O2  (1)
wherein x is the molar fraction of Si and 0.05;TABLE 1Interplanar SpacingRelative IntensityÅI/I09.30 ± 0.1510006.85 ± 0.10from 100 to 300 6.60 ± 0.10from 10 to 100B5.50 ± 0.10from 50 to 3005.24 ± 0.10from 10 to 100B4.64 ± 0.10from 10 to 1004.29 ± 0.05from 100 to 500 4.17 ± 0.05from 10 to 150B3.82 ± 0.05from 10 to 1003.42 ± 0.05from 20 to 1502.87 ± 0.02from 20 to 200I/I0 is the relative intensity when the peak of 9.30 ± 0.15 Å is taken as 1,000; and B indicates a broad peak.

主权项

1. A silicoaluminophosphate represented by the following formula (1) having a powder X-ray diffraction pattern shown in Table 1 below, and a crystal in which an intergrowth ratio of CHA structure and AEI structure is from 50/50 to 30/70 in terms of CHA/AEI ratio:
(SixAlyPz)O2  (1) wherein x is a molar fraction of Si and 0.05≦x≦0.15; y is a molar fraction of Al and 0.47≦y≦0.52; z is a molar fraction of P and 0.40≦z≦0.46; and x+y+z=1;TABLE 1Interplanar SpacingRelative IntensityÅI/I09.30 ± 0.1510006.85 ± 0.10from 100 to 300 6.60 ± 0.10from 10 to 100B5.50 ± 0.10from 50 to 3005.24 ± 0.10from 10 to 100B4.64 ± 0.10from 10 to 1004.29 ± 0.05from 100 to 500 4.17 ± 0.05from 10 to 150B3.82 ± 0.05from 10 to 1003.42 ± 0.05from 20 to 1502.87 ± 0.02from 20 to 200I/I0 is a relative intensity when the peak of 9.30 ± 0.15 Å is taken as 1,000; and B indicates a broad peak.