US5512267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zeolite CIT-1
Assignee: California Institute of Technology
•
Filing: 1994-09-14
•
Granted: 1996-04-30
•
Expires: 2014-09-14
Abstract
Abstract A zeolite composition CIT-1 is provided, the composition having a mole ratio greater than about 20:1 of a first oxide selected from silicon oxide, germanium oxide, or mixtures thereof to a second oxide comprising boron oxide; which zeolite composition has a specific X-ray powder diffraction pattern in accordance with Table 1 of the disclosure. In one embodiment, the second oxide may comprise mixtures of boron oxide with one or more of aluminum oxide, gallium oxide, iron oxide, titanium oxide and vanadium oxide. Also disclosed is a method for making CIT-1 zeolites comprising the preparation of an aqueous mixture containing sources of a N,N,N-trimethyl cis-myrtanyl ammonium ion, boron oxide or mixtures of boron oxide with one or more of aluminum oxide, gallium oxide, iron oxide, titanium oxide and vanadium oxide, and an oxide selected from silicon oxide, germanium oxide, and mixtures thereof. The mixture is maintained under sufficient crystallization conditions, preferably at a temperature of at least 100 DEG C., in an autoclave and under autogenous pressure until the crystals of the zeolite are formed.
Inventors
- 👤 Mark E. Davis
- 👤 Raul F. Lobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:48
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C01; C01B; C01B39/00; C01B39/02; C01B39/06; C01B39/12; C01B39/46; C01B39/48; C07; C07C; C07C4/00; C07C4/02; C07C4/06; C07C2529/00; C07C2529/87
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
43 words
A zeolite having a mole ratio greater than about 20:1 of a first oxide selected from silicon oxide, germanium oxide, and mixtures thereof to a second oxide comprising boron oxide; wherein said zeolite has, after calcination, the X-ray diffraction lines of Table 1.
Claim 2
Dependent Claim
43 words
A zeolite having a mole ratio greater than about 20:1 of a first oxide selected from silicon oxide, germanium oxide, and mixtures thereof to a second oxide comprising boron oxide; wherein said zeolite has, after calcination, the X-ray diffraction lines of Table 1.
Claim 3
Dependent Claim
17 words
A zeolite in accordance with claim 1 wherein said zeolite contains greater than 100 ppm of boron.
Claim 4
Dependent Claim
33 words
A zeolite in accordance with claim 1 wherein said second oxide further comprises a member of the group consisting of aluminum oxide, gallium oxide, iron oxide, titanium oxide, vanadium oxide and mixtures thereof.
Claim 5
Dependent Claim
33 words
A zeolite in accordance with claim 3 wherein said zeolite contains greater than 100 ppm of boron and a member of the group consisting of aluminum, gallium, iron, titanium, vanadium and mixtures thereof.
Claim 6
Dependent Claim
19 words
A zeolite in accordance with claim 1, wherein the amount of boron is between 1.5% and 0.3% by weight.
Claim 7
Dependent Claim
17 words
A zeolite in accordance with claim 5, wherein the amount of boron is about 0.7% by weight.
Claim 8
Dependent Claim
91 words
A zeolite having a composition, as synthesized and in the anhydrous state, in terms of mole ratios of oxides as follows: (1.0 to 5) Q.sub.2 O:(0.1 to 1.0) M.sub.2 O :W.sub.2 O.sub.3 : (greater than 20) YO.sub.2 wherein M is an alkali metal cation, W is selected from boron, or mixtures of boron with one or more of aluminum, gallium, iron, titanium and vanadium, Y is selected from silicon, germanium, and mixtures thereof, Q is N,N,N-trimethyl cis-myrtanyl ammonium ion; said zeolite having, after calcination, the X-ray diffraction lines of Table 1.
Claim 9
Dependent Claim
91 words
A zeolite having a composition, as synthesized and in the anhydrous state, in terms of mole ratios of oxides as follows: (1.0 to 5) Q.sub.2 O:(0.1 to 1.0) M.sub.2 O :W.sub.2 O.sub.3 : (greater than 20) YO.sub.2 wherein M is an alkali metal cation, W is selected from boron, or mixtures of boron with one or more of aluminum, gallium, iron, titanium and vanadium, Y is selected from silicon, germanium, and mixtures thereof, Q is N,N,N-trimethyl cis-myrtanyl ammonium ion; said zeolite having, after calcination, the X-ray diffraction lines of Table 1.
Claim 10
Dependent Claim
33 words
A zeolite in accordance with claim 7 wherein the N,N,N-trimethyl cis-myrtanyl ammonium ion is derived from ##STR2## wherein A - is an anion which is not detrimental to the formation of the zeolite.
Claim 11
Dependent Claim
12 words
A zeolite in accordance with claim 8 wherein A - is hydroxide.
Claim 12
Dependent Claim
55 words
A zeolite having a mole ratio greater than about 20:1 of a first oxide selected from silicon oxide, germanium oxide and mixtures thereof to a second oxide selected from aluminum oxide, gallium oxide, iron oxide, titanium oxide, vanadium oxide and mixtures thereof, wherein said zeolite has, after calcination, the X-ray diffraction lines of Table 1.
Claim 13
Dependent Claim
55 words
A zeolite having a mole ratio greater than about 20:1 of a first oxide selected from silicon oxide, germanium oxide and mixtures thereof to a second oxide selected from aluminum oxide, gallium oxide, iron oxide, titanium oxide, vanadium oxide and mixtures thereof, wherein said zeolite has, after calcination, the X-ray diffraction lines of Table 1.
Claim 14
Dependent Claim
14 words
A zeolite in accordance with claim 10 wherein said first oxide is silicon oxide.
Claim 15
Dependent Claim
14 words
A zeolite in accordance with claim 11 wherein said second oxide is aluminum oxide.
Claim 16
Dependent Claim
105 words
A method for preparing the zeolite of claim 1 comprising: (a) preparing an aqueous mixture, wherein the aqueous mixture has a composition in terms of mole ratios of oxides of ______________________________________
YO.sub.2 /W.sub.2 O.sub.3
20-200
OH/YO.sub.2
0.10-1.0
O/YO.sub.2
0.05-0.50
M.sup.+ /YO.sub.2
0.05-0.50
Q/Q+M.sup.+
0.30-0.80
______________________________________ wherein M is an alkali metal cation, W is selected from boron, or mixtures of boron with one or more of aluminum, gallium, iron, vanadium and titanium, Y is selected from silicon, germanium, and mixtures thereof, and Q is N,N,N-trimethyl cis-myrtanyl ammonium ion; (b) maintaining the mixture under sufficient crystallization conditions until crystals are formed; and (c) recovering the crystals.
Claim 17
Dependent Claim
28 words
A method for preparing the zeolite according to claim 13 wherein step b comprises the step of maintaining the temperature of said mixture at at least 100° C.
Claim 18
Dependent Claim
33 words
A method in accordance with claim 13 wherein the N,N,N-trimethyl cis-myrtanyl ammonium ion is derived from ##STR3## wherein A - is an anion which is not detrimental to the formation of the zeolite.
Claim 19
Dependent Claim
10 words
The method of claim 15 wherein the anion is hydroxide.
Claim 20
Dependent Claim
23 words
A process for converting hydrocarbons comprising contacting a hydrocarbonaceous feed at hydrocarbon converting conditions with a catalyst comprising the zeolite of claim 1.
Claim 21
Dependent Claim
23 words
A process for converting hydrocarbons comprising contacting a hydrocarbonaceous feed at hydrocarbon converting conditions with a catalyst comprising the zeolite of claim 10.
Claim 22
Dependent Claim
32 words
A catalytic cracking process comprising contacting a hydrocarbon feedstock in a reaction zone under catalytic cracking conditions in the absence of added hydrogen with a catalyst comprising the zeolite of claim 1.
Claim 23
Dependent Claim
32 words
A catalytic cracking process comprising contacting a hydrocarbon feedstock in a reaction zone under catalytic cracking conditions in the absence of added hydrogen with a catalyst comprising the zeolite of claim 10.
Claim 24
Dependent Claim
20 words
A process to convert paraffins to aromatics which comprises contacting paraffins with a catalyst comprising the zeolite of claim 1.
Claim 25
Dependent Claim
20 words
A process to convert paraffins to aromatics which comprises contacting paraffins with a catalyst comprising the zeolite of claim 10.
References Cited (Backward Citations)
US3140249A
Cited
US3140251A
Cited
US3140253A
Cited
US4049573A
Cited
US4269813A
Cited
EP0040016A1
Cited
US4528171A
Cited
US4554142A
Cited
US4550092A
Cited
US4544538A
Cited
US4623526A
Cited
US4508837A
Cited
US4610854A
Cited
US4559315A
Cited
US4701313A
Cited
EP0188913A2
Cited
US4661467A
Cited
US4665110A
Cited
US4910006A
Cited
US5200377A
Cited
US4963337A
Cited
US5166111A
Cited
US5110570A
Cited
WO1991009907A1
Cited
US5254514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |