John N Hryn

6375813, Apr 23, 2002

May 12, 2000

09/569538

John N. Hryn - Naperville IL
Michael J. Pellin - Naperville IL
Alan M. Wolsky - Downers Grove IL

University of Chicago - Chicago IL

C25B 1100

20429001, 2042431, 204245, 205404

A dimensionally stable electrode is provided comprising a hollow substrate with an open upper end for confining a fluid containing a metal, a film covering portions of the external surface; and a mechanism for replenishing the film. Also provided is a method for maintaining the dimensions of an anode during electrolysis comprising adapting an interior surface of the anode to receive a fluid containing a metal, facilitating transport of the metal to an exterior surface of the anode, forming a protective film on the exterior surface, wherein the transported metal is a cation of the formed protective film, and maintaining the protective film on the exterior surface while the anode is in use.

6461491, Oct 8, 2002

Jun 7, 2000

09/589329

John N. Hryn - Naperville IL
Kandipati Sreenivasarao - Des Plaines IL

The University of Chicago - Chicago IL

B01D 6144

204523, 204525, 204529, 204634

An electrodialysis apparatus includes a stack of alternating cation and anion semi-permeable, ion-selective membranes disposed between a positive DC potential anode electrode and a negative DC potential cathode electrode. The cation and anion selective membranes can be selective for monovalent or multivalent ions and form compartments therebetween through alternate compartments of which flow concentrate and diluate solutions such that the concentrate and diluate solutions are separated from each other by the ion selective membranes. Due to the potential maintained across each of the compartments and the cation and anion selective membranes separating the compartments, cations and anions as well as water will migrate from the diluate solution to the concentrate solution. An anode electrode rinse solution is circulated through an outer most compartment adjacent to the anode electrode and a separate cathode electrode rinse solution is circulated through an outer most compartment adjacent to the cathode electrode.

6485541, Nov 26, 2002

Aug 4, 2000

09/632873

John N. Hryn - Naperville IL
Michael J. Pellin - Naperville IL
Jerry F. Moore - Naperville IL
Gregory K. Krumdick - Crete IL

The University of Chicago - Chicago IL

C22B 900

75709, 75604, 75684, 75414, 164123, 164412, 164 571, 420590

A method to minimize oxidation of metal during melting processes is provided, the method comprising placing solid phase metal into a furnace environ-ment, transforming the solid-phase metal into molten metal phase having a molten metal surface, and creating a barrier between the surface and the environment. Also provided is a method for isolating the surface of molten metal from its environment, the method comprising confining the molten metal to a controlled atmos-phere, and imposing a floating substrate between the surface and the atmosphere.

7625840, Dec 1, 2009

Sep 14, 2004

10/941800

Michael J. Pellin - Naperville IL, US
John N. Hryn - Naperville IL, US
Jeffrey W. Elam - Elmhurst IL, US

UChicago Argonne, LLC. - Chicago IL

B01J 20/08
B01J 20/28
B01J 20/284
B01J 20/32
B01J 35/10
B01J 37/00
B01J 37/02
B05D 1/36
B05D 3/04
B05D 3/10
B05D 7/00
B82B 3/00

502439, 502 4, 502247, 502248, 502254, 502256, 502259, 502262, 502263, 502332, 502334, 502335, 502337, 502339, 502349, 502351, 502352, 502353, 502354, 502355, 427333, 427402, 427404, 4274192, 4274193, 977890

A nanoporous catalytic membrane which displays several unique features including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity.

7632387, Dec 15, 2009

Apr 15, 2004

10/824741

John N. Hryn - Naperville IL, US
Edward J. Daniels - Orland Park IL, US
Greg K. Krumdick - Crete IL, US

Uchicago Argonne, LLC - Chicago IL

B01D 61/44

204525, 204528, 204529, 204531

A new method for improving the efficiency of electrodialysis (ED) cells and stacks, in particular those used in chemical synthesis. The process entails adding a buffer solution to the stack for subsequent depletion in the stack during electrolysis. The buffer solution is regenerated continuously after depletion. This buffer process serves to control the hydrogen ion or hydroxide ion concentration so as to protect the active sites of electrodialysis membranes. The process enables electrodialysis processing options for products that are sensitive to pH changes.

8518845, Aug 27, 2013

Nov 2, 2009

12/610897

Michael J. Pellin - Naperville IL, US
John N. Hryn - Naperville IL, US
Jeffrey W. Elam - Elmhurst IL, US

UChicago Argonne, LLC - Chicago IL

B01J 20/28
B01J 35/00
B01J 27/22
B01J 27/224
B01J 27/24
B01J 23/00
B01J 23/02
B01J 21/04
B01J 20/00

502 4, 502177, 502178, 502200, 502355, 502415, 502439

A nanoporous catalytic membrane which displays several unique features Including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity.

20040178175, Sep 16, 2004

Mar 12, 2004

10/799181

Michael Pellin - Naperville IL, US
John Hryn - Naperville IL, US
Jeffrey Elam - Downers Grove IL, US

C23C016/00
C23F001/00

216/058000, 427/248100

An improved device and process for atomic layer deposition (ALD) is provided. A more rapid deposition of layers is accomplished by a continuous flow of reactant moieties. The first moiety, carried by an inert carrier gas, is deposited as a monolayer. The flow is then switched to the second moiety, also carried by an inert gas, which is deposited as a monolayer and which reacts with the first moiety thereby forming a product moiety monolayer. The process is repeated with continual switching of flow between the two different reactant moieties. This allows for the deposition of many layers of the product moiety Any unreacted moiety molecules and unadsorbed product moiety molecules are swept out by the carrier gas. The capability exists to use more than three reactant moieties and thus form complex materials.

20050092619, May 5, 2005

Nov 5, 2003

10/702419

John Hryn - Naperville IL, US
Boyd Davis - Kingston, CA
Jianhong Yang - Bolingbrook IL, US
Alain Roy - Kingston, CA

C25C003/18

205394000

A new method for the electrolytic production of aluminum, using a new electrolyte composition and low temperature operation, is provided. The electrolyte comprises a mixture of aluminum fluoride-potassium fluoride with from about 2 wt. % to 6 wt. % of alumina. The new electrolyte allows for the electrolytical reduction of alumina at temperatures as low as 700 C. The lower temperature allows for the use of inert anodes, and is conducive to the use of wetted cathodes. The new electrolyte mixture has a higher solubility for alumina and remains entirely liquid, even with 5 wt. % of alumina present in the electrolyte during electrolysis. Oxygen (O) is the only gas generated during alumina electrolysis with the new electrolyte and the inert anodes, thus eliminating the production of greenhouse gases. Anodes and cathodes can be mounted in either a vertical, horizontal, or some other configuration.