Robin R Richards

US Patent:

6770392, Aug 3, 2004

Filed:

Apr 27, 2001

Appl. No.:

09/843519

Inventors:

Raymond Ashton Cutler - Bountiful UT
Robin Edward Richards - Lansdale PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

H01M 812

US Classification:

429 33, 252 622

Abstract:

The present invention relates to compositions of matter represented by the general formula wherein Ln is selected from the group consisting of Sm, Gd, Y, Lnâ is selected from the group consisting of La, Pr, Nd, Pm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu; A is selected from the group consisting of Mg, Ca, Sr and Ba, 0. 05x0. 25, 0xâ0. 25, 0y0. 03, 0. 001z0. 03, 0. 05x+xâ0. 25, 0. 001y+z0. 03, wherein is a number which renders the composition of matter charge neutral. The compositions can be formed into sintered bodies suitable for use as solid electrolytes in devices including solid-state oxygen generators. Such sintered bodies have greater than 95% theoretical density at temperatures at or below 1600Â C. , and can be produced by a solid-state method.

US Patent:

7824536, Nov 2, 2010

Filed:

Jun 9, 2006

Appl. No.:

11/449953

Inventors:

Shekar Balagopal - Sandy UT, US
Justin Pendleton - Salt Lake City UT, US
Robin Richards - Salt Lake City UT, US

Assignee:

Ceramatec, Inc. - Salt Lake City UT

International Classification:

C25B 3/00

US Classification:

205450, 205451, 205452, 205453, 205454, 205457

Abstract:

Disclosed are processes of making solutions of alkali alkoxides in their corresponding alcohols using an electrolytic process. In one embodiment, sodium methoxide in methanol is made from methanol and aqueous sodium hydroxide solution, where the aqueous sodium hydroxide solution is present in the anolyte compartment and a solution of sodium methoxide in methanol is present in the catholyte compartment, the two compartments are separated by a ceramic membrane that selectively transports sodium ions under the influence of an electric potential, and wherein the composition of the solution of sodium methoxide in methanol in the catholyte compartment of the electrolytic cell comprises between at least about 2% by weight sodium methoxide and at most about 20% by weight sodium methoxide.

US Patent:

60427035, Mar 28, 2000

Filed:

May 6, 1998

Appl. No.:

9/073287

Inventors:

Stuart Adler - Salt Lake City UT
Raymond Ashton Cutler - Bountiful UT
Brett Tamatea Henderson - Salt Lake City UT
Jimmy Ludlow - Salt Lake City UT
Robin Edward Richards - Lansdale PA
Dale M. Taylor - Salt Lake City UT
Merrill Anderson Wilson - West Jordan UT

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C25B 900
C25B 904
C25B 1508

US Classification:

204252

Abstract:

An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate. The combination of biasing electrodes and offset seals is particularly effective in eliminating anode seal failure.

US Patent:

58689184, Feb 9, 1999

Filed:

Sep 26, 1996

Appl. No.:

8/721640

Inventors:

Stuart Adler - Salt Lake City UT
Brett Tamatea Henderson - Salt Lake City UT
Robin Edward Richards - Lansdale PA
Dale M. Taylor - Salt Lake City UT
Merrill Anderson Wilson - West Jordan UT

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C25B 100
C25B 102

US Classification:

205615

Abstract:

An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate. The combination of biasing electrodes and offset seals is particularly effective in eliminating anode seal failure.

US Patent:

6117288, Sep 12, 2000

Filed:

May 14, 1998

Appl. No.:

9/078364

Inventors:

Stuart Adler - Salt Lake City UT
Raymond Ashton Cutler - Bountiful UT
Brett Tamatea Henderson - Salt Lake City UT
Jimmy Ludlow - Salt Lake City UT
Robin Edward Richards - Lansdale PA
Dale M. Taylor - Salt Lake City UT
Merrill Anderson Wilson - West Jordan UT

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C25B 904
C04B 3332
C03C 1004
C03C 1012

US Classification:

204256

Abstract:

An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate. The combination of biasing electrodes and offset seals is particularly effective in eliminating anode seal failure.

US Patent:

56813732, Oct 28, 1997

Filed:

Mar 13, 1995

Appl. No.:

8/402689

Inventors:

Dale M. Taylor - Salt Lake City UT
Jeffrey Donald Bright - Salt Lake City UT
Michael Francis Carolan - Allentown PA
Raymond Ashton Cutler - Bountiful UT
Paul Nigel Dyer - Allentown PA
Eric Minford - Laurys Station PA
David W. Prouse - Salt Lake City UT
Robin Edward Richards - Lansdale PA
Steven L. Russek - Allentown PA
Merrill Anderson Wilson - West Jordan UT

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

B01D 5322
B01D 7102

US Classification:

96 11

Abstract:

Planar solid-state membrane modules for separating oxygen from an oxygen-containing gaseous mixture which provide improved pneumatic and structural integrity and ease of manifolding. The modules are formed from a plurality of planar membrane units, each membrane unit which comprises a channel-free porous support having connected through porosity which is in contact with a contiguous dense mixed conducting oxide layer having no connected through porosity. The dense mixed conducting oxide layer is placed in flow communication with the oxygen-containing gaseous mixture to be separated and the channel-free porous support of each membrane unit is placed in flow communication with one or more manifolds or conduits for discharging oxygen which has been separated from the oxygen-containing gaseous mixture by permeation through the dense mixed conducting oxide layer of each membrane unit and passage into the manifolds or conduits via the channel-free porous support of each membrane unit.