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US 11,897,779 B2Granted
Microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof
AssigneesEast China Normal University, Rhodia Operations
InventorsFangzheng Su, Stéphane Streiff, Laurent Garel, Peng Wu, Jianyong Yin, Xinqing Lu
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Abstract
It relates to a microporous aluminotitanosilicate crystalline zeolite, method of preparation and applications thereof. It extends to a catalytic hydroxylation, by reaction of a compound of formula (I) with H2O2 in the presence of a catalyst comprising the zeolite.
Claims20
A microporous aluminotitanosilicate crystalline zeolite having a three-dimensional framework of A1O2, SiO2 and TiO2 tetrahedral units and an empirical composition in the as synthesized and anhydrous basis expressed by an empirical formula of:
- TipMmn+AlxSiOy
- wherein:
- p is the mole ratio of Ti to Si and has a value from 0.005 to about 0.1,
- M represents a potassium ion and/or sodium ion, or their exchangeable cations,
- m is the mole ratio of M to Si and varies from about 0.001 to about 0.05,
- n is the valence of M,
- x is the mole ratio of Al to Si and varies from 0.0025 to about 0.1;
- and
- y has a value determined by the equation:
- y=(4·p+m·n+3·x+4)/2
- and is characterized in that it has the x-ray diffraction pattern having at least the intensities set forth in Table A:
- TABLE A
- 2θ(Degree)
- I/Io %
- 6.45-6.8
- m
- 6.75-7.13
- m-vs
- 7.86-8.26
- m
- 8.64-9.04
- m
- 9.51-10.09
- m-vs
- 10.62-11.23
- w-m
- 13.4-14.22
- w-m
- 14.76-15.55
- w
- 17.63-18.37
- m
- 19.17-19.91
- w-m
- 19.64-20.56
- m
- 20.18-21.05
- w-m
- 20.7-21.57
- w-m
- 21.36-22.28
- vs
- 22.17-23.6
- m-s
- 22.7-23.8
- w-m
- 24.12-25.23
- w
- 25.6-26.94
- m
- 26.37-27.79
- m
- 27.02-28.42
- m
- 27.53-28.89
- m
- 28.7-30.09
- m
- 29.18-30.72
- w-m
- 30.19-31.73
- m
- 30.83-32.2
- w
- 32.81-34.22
- w
- 35.63-36.99
- w
- 41.03-42.86
- w
- 44.18-45.83
- w
- 44.87-46.57
- w
- 46.07-47.35
- w
- 48.97-50.42
- w
- wherein:
- the ratio of MSE framework characteristic peak intensity at a 2θ angle equal to 21.7 degree, to MFI framework characteristic peak intensity at a 2θ angle equal to 23.3 degree ranges from 80:1 to 1:1 in x-ray diffraction pattern.
77 more elements
Dependencies are inferred from the claim text.