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US4981663A
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Synthetic crystal MCM-35
Assignee: ExxonMobil Oil Corp
•
Filing: 1990-01-26
•
Granted: 1991-01-01
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Expires: 2010-01-26
Abstract
Abstract This invention relates to a new synthetic crystalline material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.
Inventors
- 👤 Mae K. Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:06
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
26 words
A synthetic crystalline material characterized by an X-ray diffraction pattern exhibiting interplanar d-spacing values including those at 15.4±0.23; 9.03±0.14; 6.62±0.10; 4.99±0.07; 4.04±0.05; 3.31±0.04; and 2.00±0.03 Angstroms.
Claim 2
Dependent Claim
26 words
A synthetic crystalline material characterized by an X-ray diffraction pattern exhibiting interplanar d-spacing values including those at 15.4±0.23; 9.03±0.14; 6.62±0.10; 4.99±0.07; 4.04±0.05; 3.31±0.04; and 2.00±0.03 Angstroms.
Claim 3
Dependent Claim
34 words
The crystalline material of claim 1 having a composition comprising the molar relationship X.sub.2 O.sub.3 :(n)YO.sub.2 wherein n is at least about 30, X is a trivalent element and Y is a tetravalent element.
Claim 4
Dependent Claim
69 words
The crystalline material of claim 1 having an as-synthesized composition on an anhydrous basis and in terms of moles of oxides per n moles of YO 2 , expressed by the formula: (0.1 to 0.8)M.sub.2 O:(0.5 to 4)R.sub.2 O:X.sub.2 O.sub.3 :nYO.sub.2 wherein R is an organic, M is an alkali metal cation, n is at least about 30, X is a trivalent element and Y is a tetravalent element.
Claim 5
Dependent Claim
15 words
The crystalline material of claim 2 wherein n is from about 40 to about 200.
Claim 6
Dependent Claim
11 words
The crystalline material of claim 3 wherein said R is hexamethyleneimine.
Claim 7
Dependent Claim
60 words
The crystalline material comprising the crystalline material of claim 3 having original cations replaced, at least in part, with a cation or a mixture of cations selected from the group consisting of hydrogen and hydrogen precursors, rare earth metals, and metals of Groups IIA, IIIA, IVA, IB, IIB, IIIB, IVB, VIB and VIII of the Periodic Table of the Elements.
Claim 8
Dependent Claim
14 words
The crystalline material resulting from thermal treatment of the crystalline material of claim 3.
Claim 9
Dependent Claim
14 words
The crystalline material resulting from thermal treatment of the crystalline material of claim 6.
Claim 10
Dependent Claim
14 words
The crystalline material of claim 4 wherein X is aluminum and Y is silicon.
Claim 11
Dependent Claim
22 words
The crystalline material of claim 3 wherein n is from about 40 to about 200, X is aluminum and Y is silicon.
Claim 12
Dependent Claim
138 words
A method for preparing the synthetic crystalline material of claim 3, said method comprising preparing a reaction mixture capable of forming said material upon crystallization, said reaction mixture containing sufficient amounts of alkali metal cations (M), trivalent element (X) oxide, tetravalent element (Y) oxide, hexamethyleneimine (R) and water, said trivalent element being selected from the group consisting of aluminum, boron, iron and gallium, said tetravalent element being selected from the group consisting of silicon and germanium, said reaction mixture having a composition in terms of mole ratios within the following ranges: ______________________________________
YO.sub.2 /X.sub.2 O.sub.3
= 30 to 200
H.sub.2 O/YO.sub.2
= 10 to 100
OH.sup.- /YO.sub.2
= 0.01 to 0.2
M/YO.sub.2 = 0.01 to 1.0
R/YO.sub.2 = 0.1 to 1.0
______________________________________ and maintaining said reaction mixture under sufficient crystallization conditions until crystals of said material are formed.
Claim 13
Dependent Claim
52 words
The method of claim 11 wherein said reaction mixture has a composition in terms of mole ratios within the following ranges: ______________________________________
YO.sub.2 /X.sub.2 O.sub.3
= 50 to 150
H.sub.2 O/YO.sub.2 = 15 to 40
OH.sup.- /YO.sub.2 = 0.02 to 0.1
M/YO.sub.2 = 0.05 to 0.3
R/YO.sub.2 = 0.1 to 0.5
______________________________________
Claim 14
Dependent Claim
20 words
The method of claim 11 wherein said reaction mixture further comprises a sufficient amount of crystal formation enhancing seed crystals.
Claim 15
Dependent Claim
16 words
The crystalline material of claim 6 wherein said replacing cations comprise hydrogen or a hydrogen precursor.
Claim 16
Dependent Claim
12 words
The crystalline material of claim 6 wherein said replacing cations comprise metals.
Claim 17
Dependent Claim
12 words
A composition comprising the crystalline material of claim 1 and a matrix.
Claim 18
Dependent Claim
10 words
The composition of claim 16 wherein said matrix comprises alumina.
Claim 19
Dependent Claim
10 words
The composition of claim 16 wherein said matrix comprises silica.
Claim 20
Dependent Claim
15 words
The composition of claim 16 wherein said matrix comprises magnesia, zirconia, thoria, beryllia or titania.
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