Beta-type zeolite and catalyst containing same
Provided is a beta zeolite satisfying P>76.79Q−29.514 in a range in which Q is less than 0.4011 nm, wherein, P represents an AB value that is an intensity ratio of A to B, A represents a diffraction intensity of a main peak of the beta zeolite observed by X-ray diffraction measurement, B represents a diffraction intensity of the (116) plane of α-alumina obtained by X-ray diffraction measurement under the same conditions as those for the X-ray diffraction measurement on the beta zeolite, the α-alumina being the standard substance 674a distributed by the American National Institute of Standards and Technology, and Q represents a lattice interplanar spacing of the main peak of the beta zeolite observed by X-ray diffraction measurement. It is preferable that the formula (1) above is satisfied in a range in which Q is from 0.3940 to 0.4000 nm.
1. A beta zeolite satisfying formula (1) below in a range in which Q is less than 0.4011 nm,
P> 76.79 Q− 29.514 (1),
wherein, P represents an A/B value that is an intensity ratio of A to B,
A represents a diffraction intensity of a main peak of the beta zeolite observed by X-ray diffraction measurement,
B represents a diffraction intensity of the (116) plane of α-alumina obtained by X-ray diffraction measurement under the same conditions as those for the X-ray diffraction measurement on the beta zeolite, the α-alumina being the standard substance 674a distributed by the American National Institute of Standards and Technology, and
Q represents a lattice interplanar spacing of the main peak of the beta zeolite observed by X-ray diffraction measurement.
2. The beta zeolite according to claim 1 , wherein the formula (1) is satisfied in a range in which Q is from 0.3940 to 0.4000 nm.
3. The beta zeolite according to claim 1 , wherein the formula (1) is satisfied in a range in which Q is 0.3963 nm or less, and a full width at half maximum of the main peak of the beta zeolite observed by X-ray diffraction measurement is 0.135° or less.
4. The beta zeolite according to claim 1 , which is synthesized without using an organic structure directing agent.
5. The beta zeolite according to claim 1 , which is ion-exchanged with a transition metal ion.
6. The beta zeolite according to claim 1 , comprising an oxide of phosphorus, zirconium, zinc, or silicon on a surface of the beta zeolite.
7. The beta zeolite according to claim 1 , comprising at least one element selected from the group consisting of titanium, tin, zinc, niobium, tantalum, and zirconium.
8. The beta zeolite according to claim 7 , comprising at least one element selected from titanium, tin, zinc, niobium, tantalum, and zirconium in a framework of the beta zeolite.
9. A catalyst comprising the beta zeolite according to claim 1 .
10. The catalyst according to claim 9 , being a catalyst for cracking a long-chain hydrocarbon.
11. The catalyst according to claim 9 , having a film form or a pellet form.