Richard Alan Mackay

US Patent:

6471921, Oct 29, 2002

Filed:

May 19, 1999

Appl. No.:

09/314708

Inventors:

Pamela Van Calcar - Superior CO
Richard Mackay - Lafayette CO
Anthony F. Sammells - Boulder CO

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

B01J 800

US Classification:

422239, 422240, 502 4, 502525, 2525211, 2525191, 25251915

Abstract:

The invention relates to mixed phase materials for the preparation of catalytic membranes which exhibit ionic and electronic conduction and which exhibit improved mechanical strength compared to single phase ionic and electronic conducting materials. The mixed phase materials are useful for forming gas impermeable membranes either as dense ceramic membranes or as dense thin films coated onto porous substrates. The membranes and materials of this invention are useful in catalytic membrane reactors in a variety of applications including synthesis gas production. One or more crystalline second phases are present in the mixed phase material at a level sufficient to enhance the mechanical strength of the mixture to provide membranes for practical application in CMRs.

US Patent:

6592782, Jul 15, 2003

Filed:

Dec 22, 2000

Appl. No.:

09/748344

Inventors:

Richard MacKay - Lafayette CO
Michael Schwartz - Boulder CO
Anthony F. Sammells - Boulder CO

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

C01B 1300

US Classification:

252500, 252509, 252513, 2525211, 501 972, 501 973, 501 982, 423210, 423583, 423600, 423608, 96 4, 96 7, 505701, 505708, 505785, 505779, 422190

Abstract:

Metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes having the formula: where: x and xâ are greater than 0; y and yâ are greater than 0; x+xâ is equal to 2; y+yâ is less than or equal to 2; z is a number that makes the metal oxide charge neutral; A is an element selected from the lanthanide elements; Aâ is an element selected from Be, Mg, Ca, Sr, Ba and Ra; Aâ is an element selected from the f block lanthanides, Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof and Bâ is Co or Mg, with the exception that when Bâ is Mg, Aâ and Aâ are not Mg. The metal oxides are useful for preparation of dense membranes which may be formed from dense thin films of the mixed metal oxide on a porous metal oxide element. The invention also provides methods and catalytic reactors for oxygen separation and oxygen enrichment of oxygen deficient gases which employ mixed conducting metal oxides of the above formula.

US Patent:

6641626, Nov 4, 2003

Filed:

Sep 19, 2002

Appl. No.:

10/247788

Inventors:

Pamela Van Calcar - Tualatin OR
Richard Mackay - Lafayette CO
Anthony F. Sammells - Boulder CO

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

C01B 324

US Classification:

481982, 48DIG 5, 502 4, 502524, 423219, 423220, 423224, 423257, 4232421

Abstract:

The invention relates to mixed phase materials for the preparation of catalytic membranes which exhibit ionic and electronic conduction and which exhibit improved mechanical strength compared to single phase ionic and electronic conducting materials. The mixed phase materials are useful for forming gas impermeable membranes either as dense ceramic membranes or as dense thin films coated onto porous substrates. The membranes and materials of this invention are useful in catalytic membrane reactors in a variety of applications including synthesis gas production. One or more crystalline second phases are present in the mixed phase material at a level sufficient to enhance the mechanical strength of the mixture to provide membranes for practical application in CMRs.

US Patent:

7001446, Feb 21, 2006

Filed:

Nov 19, 2003

Appl. No.:

10/717218

Inventors:

Shane E. Roark - Boulder CO, US
Richard MacKay - Lafayette CO, US
Michael V. Mundschau - Longmont CO, US

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

B01D 53/22
B01D 71/02

US Classification:

95 56, 96 4, 96 11, 55524

Abstract:

This invention provides hydrogen-permeable membranes for separation of hydrogen from hydrogen-containing gases. The membranes are multi-layer having a central hydrogen-permeable layer with one or more catalyst layers, barrier layers, and/or protective layers. The invention also relates to membrane reactors employing the hydrogen-permeable membranes of the invention and to methods for separation of hydrogen from a hydrogen-containing gas using the membranes and reactors. The reactors of this invention can be combined with additional reactor systems for direct use of the separated hydrogen.

US Patent:

8491861, Jul 23, 2013

Filed:

May 24, 2007

Appl. No.:

11/753485

Inventors:

Carl Evenson - Lafayette CO, US
Richard Mackay - Lafayette CO, US

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

C01B 25/45
H01M 4/02
H01M 4/04
H01M 4/13

US Classification:

423306, 429220, 429221, 429223, 429224, 42923195

Abstract:

A process is disclosed for the preparation of electroactive cathode compounds useful in lithium-ion batteries, comprising exothermic mixing of low-cost precursors and calcination under appropriate conditions. The exothermic step may be a spontaneous flameless combustion reaction. The disclosed process can be used to prepare any lithium metal phosphate or lithium mixed metal phosphate as a high surface area single phase compound.

US Patent:

20020022568, Feb 21, 2002

Filed:

Jul 13, 2001

Appl. No.:

09/905651

Inventors:

Richard Mackay - Lafayette CO, US
Anthony Sammells - Boulder CO, US

International Classification:

B01J023/10
C01B003/26
C04B035/50

US Classification:

501/152000, 423/263000, 423/593000, 422/129000, 423/651000

Abstract:

Ceramics of the composition:where Ln is an element selected from the f block lanthanides and yttrium or mixtures thereof; M is an element selected from the d block transition metals or mixtures thereof; xyand is a number that varies to maintain charge neutrality are provided along with methods of their use. These ceramics are useful in making and using gas-impermeable ceramic membranes that exhibit high electronic and ionic conductivity, low coefficients of expansion and high chemical and thermal stability under catalytic membrane reactor conditions. The ceramics provided are particularly useful for promotion of oxidation-reduction reactions and for separating molecular oxygen from oxygen containing gases.

US Patent:

61654310, Dec 26, 2000

Filed:

Apr 6, 1999

Appl. No.:

9/286829

Inventors:

Richard Mackay - Lafayette CO
Michael Schwartz - Boulder CO
Anthony F. Sammells - Boulder CO

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

B01D 5322
C01B 1300

US Classification:

423219

Abstract:

This invention provides mixed conducting metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes. The materials of this invention have the general formula: A. sub. x A'. sub. x A". sub. 2-(x+x') B. sub. y B'. sub. y B". sub. 2-(y+y') O. sub. 5+z ; where x and x' are greater than 0; y and y' are greater than 0; x+x' is less than or equal to 2; y+y' is less than or equal to 2; z is a number that makes the metal oxide charge neutral; A is an element selected from the f block lanthanide elements; A' is an element selected from Be, Mg, Ca, Sr, Ba and Ra; A" is an element selected from the f block lanthanides or Be, Mg, Ca, Sr, Ba and Ra; B is an element selected from the group consisting of Al, Ga, In or mixtures thereof; and B' and B" are different elements and are independently selected from the group of elements Mg or the d-block transition elements. The invention also provides methods for oxygen separation and oxygen enrichment of oxygen deficient gases which employ mixed conducting metal oxides of the above formula. Examples of the materials used for the preparation of the membrane include A. sub. x Sr. sub. x' B. sub. y Fe. sub. y' Co. sub.

US Patent:

61465496, Nov 14, 2000

Filed:

Aug 4, 1999

Appl. No.:

9/366823

Inventors:

Richard Mackay - Lafayette CO
Anthony F. Sammells - Boulder CO

Assignee:

Eltron Research, Inc. - Boulder CO

International Classification:

C07C 102
B01J 2028
B01J 2300
B01J 2340
B01J 2358

US Classification:

252373

Abstract:

Ceramics of the composition: Ln. sub. x Sr. sub. 2-x-y Ca. sub. y B. sub. z M. sub. 2-z O. sub. 5+. delta. where Ln is an element selected from the fblock lanthanide elements and yttrium or mixtures thereof; B is an element selected from Al, Ga, In or mixtures thereof; M is a d-block transition element of mixtures thereof; 0. 01. ltoreq. x. ltoreq. 1. 0; 0. 01. ltoreq. y. ltoreq. 7; 0. 01. ltoreq. z. ltoreq. 1. 0 and. delta. is a number that varies to maintain charge neutrality are provided. These ceramics are useful in ceramic membranes and exhibit high ionic conductivity, high chemical stability under catalytic membrane reactor conditions and low coefficients of expansion. The materials of the invention are particularly useful in producing synthesis gas.