# US 5,349,117 A · Process for sorption separation

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- Number: US 5,349,117 A
- Document ID: US5349117A
- Status: Granted
- Kind: A
- Application number: 08/148,946
- Filed: 1993-11-08
- Granted: 1994-09-20
- Earliest claimed: 1992-07-08
- Assignees: Mobil Oil Corporation
- Inventors: Robert K. Grasselli; Rudolph M. Lago; Richard F. Socha; John G. Tsikoyiannis
- Web page: https://patentgrep.com/patent/US5349117A

## CPC

- B01D 53/02: by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)}
- B01D 53/8668: {Removing organic compounds not provided for in B01D53/8603 - B01D53/8665}
- B01D 53/9413: {Processes characterised by a specific catalyst}
- B01D 53/9481: {Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start}
- B01J 37/0246: {Coatings comprising a zeolite}
- C07C 5/325: {of the platinum group}
- C07C 5/3337: {of the platinum group}
- C07C 7/13: by molecular-sieve technique
- B01J 2229/64: in or on refractory materials
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

A process for separating at least one component from a mixture of components which comprises contacting the mixture with a sorbent structure comprising a film of interconnected zeolite crystals bonded to a substrate, said sorbent structure being characterized by a value r representing the mg of zeolite/cm.sup.2 of substrate surface and a value e representing the coating efficiency as mg of bonded zeolite/mg of YO.sub.2 initially in the synthesis mixture, wherein r is at least 0.5 and e is at least 0.05.

## Claims

### Claim 1

A process for separating at least one component from a mixture of components in the vapor or liquid phase having differential sorption characteristics with respect to a sorbent structure, wherein said at least one component is selectively adsorbed on said sorbent in preference to at least one other component in said mixture of components said sorbent structure comprising a film of interconnected zeolite crystals bonded to a substrate surface, said structure having been manufactured by the method comprising
contacting the substrate with a chemical reaction mixture capable of forming the zeolite film under crystallization conditions, wherein said reaction mixture comprises a H.sub.2 O/YO.sub.2 molar ratio of at least about 25 when the YO.sub.2 /X.sub.2 O.sub.3 molar ratio is greater than about 400, a H.sub.2 O/YO.sub.2 ratio of at least about 35 when the YO.sub.2 /X.sub.2 O.sub.3 ratio is greater than about 150 and less than about 400, and a H.sub.2 O/YO.sub.2 ratio of at least about 45 when the XO.sub.2 /X.sub.2 O.sub.3 ratio is less than about 150; and wherein Y is a tetravalent element and X is a trivalent element.

### Claim 2 (depends on 1)

The process of claim 1 wherein said zeolite crystals have a Constraint Index of from about 1 to about 12.

### Claim 3 (depends on 1)

The process of claim 1 wherein said zeolite crystals have the crystal structure of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-22, ZSM-23, ZSM-35, ZSM-38, ZSM-48, or Beta.

### Claim 4 (depends on 1)

The process of claim 1 wherein said zeolite crystals have the structure of ZSM-5.

### Claim 5 (depends on 1)

The process of claim 1 wherein said substrate is selected from the group consisting of glass, cordierite, mullite, titania, zirconia, silica, carbides, nitrides, quartz, clay, and metals.

### Claim 6 (depends on 1)

The process of claim 1 wherein said sorbent structure manufacturing method comprises steaming the zeolite at a temperature of from about 200.degree. C. to about 800.degree. C. for a time of from about 1 hour to about 50 hours.

### Claim 7 (depends on 1)

The process of claim 1 wherein said sorbent structure manufacturing method comprises calcining the zeolite.

### Claim 8 (depends on 1)

The process of claim 1 wherein said sorbent structure manufacturing method comprises ion exchanging the zeolite.

### Claim 9 (depends on 8)

The process of claim 8 wherein said ion is selected from the group consisting of Pd, Pt, Ru, Mo, W, Ni, Cu, Fe, Ag, Co, Rh, V, Cr, and ammonium.

### Claim 10 (depends on 1)

The process of claim 1 wherein the chemical reaction mixture has a composition in terms of mole ratios including
______________________________________ H.sub.2 O/YO.sub.2 25 to 500 YO.sub.2 /X.sub.2 O.sub.3 26 to .infin. OH.sup.- /YO.sub.2 0.01 to 0.8. ______________________________________

### Claim 11 (depends on 10)

The process of claim 10 wherein the chemical mixture has a composition including
______________________________________ H.sub.2 O/YO.sub.2 30 to 200 YO.sub.2 /X.sub.2 O.sub.3 40 to .infin. OH.sup.- /YO.sub.2 0.02 to 0.4. ______________________________________

### Claim 12 (depends on 11)

The process of claim 11 wherein the chemical mixture has a composition including
______________________________________ H.sub.2 O/YO.sub.2 30 to 150 YO.sub.2 /X.sub.2 O.sub.3 50 to .infin. OH.sup.- /YO.sub.2 0.02 to 0.4. ______________________________________

### Claim 13 (depends on 10)

The process of claim 10 wherein X comprises at least one member selected from the group consisting of aluminum, boron, iron, and gallium; and Y comprises at least one member selected from the group consisting of silicon, germanium, and titanium.

### Claim 14 (depends on 13)

The process of claim 13 wherein X comprises aluminum and Y comprises silicon.

### Claim 15 (depends on 1)

The process of claim 1 wherein the chemical reaction mixture molar ratio of YO.sub.2 to available surface area of the substrate in mg/cm.sup.2 is a value d which is at least about 0.5 and less than about 200.

### Claim 16 (depends on 15)

The process of claim 15 wherein d is from about 2 to about 50.

### Claim 17 (depends on 1)

The process of claim 1 in which the mixture comprises water and at least one hydrocarbon component, at least one hydrocarbon component of the mixture being selectively sorbed on said sorbent in preference to the water in the mixture.

### Claim 18 (depends on 1)

The process of claim 1 in which the mixture comprises at least two hydrocarbon component, at least one of which is selectively sorbed on said sorbent in preference to at least one other hydrocarbon component of the mixture.

### Claim 19 (depends on 1)

The process of claim 1 in which the mixture comprises an alcohol and at least one hydrocarbon component, at least one hydrocarbon component of the mixture being selectively sorbed on said sorbent in preference to the alcohol in the mixture.