US4472513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser-synthesized catalysts
Assignee: Honeywell International Inc
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Filing: 1982-10-07
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Granted: 1984-09-18
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Expires: 2002-10-07
Abstract
Abstract A solid catalyst material is evaporated from a coating on a transparent solid substrate and is condensed onto a solid polymeric organic catalyst carrier or into a liquid, by passing a laser beam through said solid transparent substrate and onto the back of said coating and contacting said catalyst carrier or liquid with the evaporated catalyst material. Suitably, the laser source is a ruby or a rhodamine dye laser; a suitable catalyst material is rhodium metal; and a suitable solid polymeric organic catalyst carrier is polystyrene crosslinked by divinyl benzene and a suitable liquid is aqueous polyvinyl alcohol. The process minimizes the exposure to heat of the catalyst carrier or suspending liquid.
Inventors
- 👤 Eva L. Menger-Hammond
- 👤 Miroslav Novotny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:54
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0238; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/464; B01J37/34; B01J37/349; B01J2235/00; B01J2235/30; B01J31/00; B01J31/02; B01J31/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A process for producing a heterogeneous catalyst, comprising evaporating a metal from the group consisting of Groups IB, VIB and VII, which upon evaporation and condensation forms catalytic metal, from a coating on a transparent solid substrate onto a solid polymeric organic catalyst carrier, by passing a laser beam, having sufficient power to evaporate and blast off said coating, through said solid transparent substrate and onto the back of said coating; and contacting said polymeric organic catalyst carrier with the evaporated metal thereby condensing a catalytic metal in the form of individual particles and loose, lacy aggregates of smaller particles onto said catalyst carrier.
Claim 2
Dependent Claim
104 words
A process for producing a heterogeneous catalyst, comprising evaporating a metal from the group consisting of Groups IB, VIB and VII, which upon evaporation and condensation forms catalytic metal, from a coating on a transparent solid substrate onto a solid polymeric organic catalyst carrier, by passing a laser beam, having sufficient power to evaporate and blast off said coating, through said solid transparent substrate and onto the back of said coating; and contacting said polymeric organic catalyst carrier with the evaporated metal thereby condensing a catalytic metal in the form of individual particles and loose, lacy aggregates of smaller particles onto said catalyst carrier.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein said transparent substrate is glass and said metal condensed onto said solid polymeric organic catalyst carrier forms a hydrogenation dehydrogenation catalyst.
Claim 4
Dependent Claim
32 words
The process of claim 2 wherein said metal of the coating is rhodium metal and said carrier is polystyrene crosslinked with divinyl benzene in the form of beads or clusters of beads.
Claim 5
Dependent Claim
96 words
A process for producing a heterogeneous catalyst, comprising evaporating a metal from the group consisting of Groups IB, VIB and VIII, which upon evaporation and condensation forms catalytic metal, from a coating on a transparent solid substrate into a liquid, by passing a laser beam, having sufficient power to evaporate and blast off said coating, through said solid transparent substrate and onto the back of said coating; and contacting said liquid with the evaporated metal thereby condensing a catalytic metal in the form of individual particles and loose, lacy aggregates of smaller particles onto said liquid.
Claim 6
Dependent Claim
96 words
A process for producing a heterogeneous catalyst, comprising evaporating a metal from the group consisting of Groups IB, VIB and VIII, which upon evaporation and condensation forms catalytic metal, from a coating on a transparent solid substrate into a liquid, by passing a laser beam, having sufficient power to evaporate and blast off said coating, through said solid transparent substrate and onto the back of said coating; and contacting said liquid with the evaporated metal thereby condensing a catalytic metal in the form of individual particles and loose, lacy aggregates of smaller particles onto said liquid.
Claim 7
Dependent Claim
51 words
The process of claim 4 wherein the process further comprises placing said metal of the coating and said liquid in intimate contact with one another and wherein said catalytic metal is condensed in the form of a suspension of individual particles and loose, lacy aggregates of smaller particles in said liquid.
Claim 8
Dependent Claim
19 words
The process of claim 4 wherein said liquid is a 2% by wt. solution of polyvinyl alcohol in water.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |