EP0094693A2
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EP
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Crystalline aluminosilicate zeolite and process for its production
Assignee: Teijin Petrochemical Industries Ltd
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Filing: 1983-05-19
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Granted: —
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Expires: 2003-05-19
Abstract
Abstract A process for producing a crystalline alumino-silicate zeolite characterized by having (a) a silica/alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A of the specification, and (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, which comprises maintaining a silica source, an alumina source, and a zeolite selected from zeolites ZSM-5 and zeolites having said characteristics, in an aqueous solution containing 1 to 200 millimoles, per gram of said zeolite, of an alkali metal hydroxide under such temperature, pressure and time conditions as to produce a crystalline alumino-silicate zeolite; and a crystalline aluminosilicate zeolite characterized by having aforesaid properties (a) to (c) and (d) a (2-methylpentane/cyclohexane) adsorption ratio of from 1.1 to 1.6.
Inventors
- 👤 Tamio Onodera
- 👤 Tokuji Sakai
- 👤 Yasuo Yamasaki
- 👤 Koji Sumitani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 10:19
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/126; C01; C01B; C01B39/00; C01B39/02; C01B39/36; C01B39/38; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; C07C2529/00; C07C2529/04; C07C2529/06; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
A process for producing a crystalline alumino- silicate zeolite characterized by having (a) a silica/ alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A of the specification, and (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, which comprises maintaining a silica source, an alumina source, and a zeolite selected from zeolites ZSM-5 and zeolites having said characteristics, in an aqueous solution containing 1 to 200 millimoles, per gram of said zeolite, of an alkali metal hydroxide under such temperature, pressure and time conditions as to produce a crystalline alumino- silicate zeolite.
Claim 2
Dependent Claim
105 words
A process for producing a crystalline alumino- silicate zeolite characterized by having (a) a silica/ alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A of the specification, and (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, which comprises maintaining a silica source, an alumina source, and a zeolite selected from zeolites ZSM-5 and zeolites having said characteristics, in an aqueous solution containing 1 to 200 millimoles, per gram of said zeolite, of an alkali metal hydroxide under such temperature, pressure and time conditions as to produce a crystalline alumino- silicate zeolite.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the zeolite is zeolite ZSM-5.
Claim 4
Dependent Claim
29 words
The process of claim 1 or 2 wherein the amount of the alkali metal hydroxide in the aqueous solution is 5 to 100 millimoles per gram of the zeolite.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the alkali metal hydroxide is sodium hydroxide, potassium hydroxide, or both.
Claim 6
Dependent Claim
42 words
The process of claim 1 wherein the proportions of the silica source and the alumina source are such that 0.1 to 200 millimoles of Si0 2 and 0.01 to 20 millimoles of Al 2 0 3 are used per gram of zeolite.
Claim 7
Dependent Claim
43 words
The process of claim 5 wherein the proportions of the silica source and the alumina source are such that 1 to 100 millimoles of Si0 2 and 0.1 to 10 millimoles of Al 2 0 3 are used per gram of the zeolite.
Claim 8
Dependent Claim
68 words
The process of claim 1 wherein the proportions of the silica source, the alumina source and the alkali metal hydroxide are such that the Si0 2 /A1 2 0 3 mole ratio is from 1 to 200, the OH - /(SiO 2 +Al 2 O 3 ) mole ratio is from 0.1 to 10, and the OH - /H 2 0 mole ratio is from 0.001 to 0.1.
Claim 9
Dependent Claim
46 words
The process of claim 7 wherein the Si02/A1203 mole ratio is from 5 to 100, the OH - /(SiO 2 +Al 2 O 3 ) mole ratio is from 0.2 to 5, and the OH - /H 2 O mole ratio is from 0.005 to 0.05.
Claim 10
Dependent Claim
25 words
9 . The process of claim 1 wherein the silica source is selected from a silica powder; colloidal silica, water-soluble silicon compounds and silicic acid.
Claim 11
Dependent Claim
21 words
The process of claim 1 wherein the alumina source is selected from alumina, mineral acid salts of aluminum and aluminate salts.
Claim 12
Dependent Claim
20 words
The process of claim 1 wherein an alumino- silicate salt is used as a common source of silica and alumina.
Claim 13
Dependent Claim
17 words
The process of claim 1 wherein the temperature is in the range of 90 to 250 °C.
Claim 14
Dependent Claim
19 words
The process of claim 1 wherein the pressure is the autogenous pressure in an autoclave or a higher pressure.
Claim 15
Dependent Claim
55 words
A novel crystalline aluminosilicate zeolite characterized by having (a) a silica/alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A in the specification, (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, and (d) a (2-methylpentane/cyclohexane) adsorption ratio of from 1.1 to 1.6.
Claim 16
Dependent Claim
55 words
A novel crystalline aluminosilicate zeolite characterized by having (a) a silica/alumina mole ratio of from 10 to 100, (b) X-ray lattice distances d shown in Table A in the specification, (c) a specific n-hexane adsorption, under limited measuring conditions, of at least 0.07 g/g, and (d) a (2-methylpentane/cyclohexane) adsorption ratio of from 1.1 to 1.6.
Claim 17
Dependent Claim
16 words
The zeolite of claim 14 wherein the silica/ alumina mole ratio is from 20 to 80.
Claim 18
Dependent Claim
39 words
The zeolite of claim 14 wherein when the intensity (I ) of the X-ray diffraction peak at d(n)=3.86 is taken as 100, the relative intensity (I/I o ) of the X-ray diffraction peak at d(Å)=3.83 is at least 70.
Claim 19
Dependent Claim
15 words
The zeolite of claim 14 wherein the (2-methylpentane/cyclohexane) adsorption ratio is from 1.2 to 1.5.
Claim 20
Dependent Claim
20 words
The zeolite of claim 14 which has a cyclohexane decomposition index ratio, in the activated state, of at least 1.1.
Claim 21
Dependent Claim
15 words
The zeolite of claim 18 wherein the cyclohexane decomposition index ratio is at least 1.5.
References Cited (Backward Citations)
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