David R O'Connor

US Patent:

20100210878, Aug 19, 2010

Filed:

Feb 17, 2010

Appl. No.:

12/707658

Inventors:

Esmaeel Naeemi - Lynnwood WA, US
David G. O'Connor - North Bend WA, US

Assignee:

Asemblon, Inc. - Redmond WA

International Classification:

C07C 209/42
B01J 8/18

US Classification:

564491, 422141, 564493

Abstract:

There is disclosed a process for hydrogen release and chemical storage by dehydrogenating low molecular weight aliphatic amines and di-amines to produce their corresponding nitriles in a reactor system containing a hydrogen fractionation membrane (or sweep gas) to quickly remove any and all hydrogen generated during the dehydrogenation reaction. This disclosure further provides a process for hydrogen recovery using bi- and tri-functional amines that produce corresponding nitriles and high density hydrogen release.

US Patent:

20190374924, Dec 12, 2019

Filed:

Jan 8, 2019

Appl. No.:

16/242383

Inventors:

- Redmond WA, US
David O'Connor - Redmond WA, US

International Classification:

B01J 19/00
H01M 8/0612

Abstract:

The current document is directed to an efficient multi-channel chemical reactor having a multichannel core containing a plurality of parallel channels, with conductive walls, having a varying composition along their lengths. The channels are heated by a frequency-addressing different regions within the reactor with an inductive coil, driven by an agile frequency or spread spectrum emission controller.

US Patent:

20140187416, Jul 3, 2014

Filed:

Dec 17, 2013

Appl. No.:

14/109677

Inventors:

- Woodinville WA, US
David O'Connor - Woodinville WA, US

Assignee:

Asemblon Inc. - Woodinville WA

International Classification:

B01J 23/75
B01J 37/12
B01J 37/34

US Classification:

502300, 4235921, 42359419, 264628, 264414

Abstract:

The current document is directed to processes for producing improved porous catalysts for the dehydrogenation of organic compounds. In one implementation, the process comprises providing a powder of metal particles, sieving the powder using vibrating-screen sieves, aligning metal particles collected from sieving under an external magnetic field, partially sintering the aligned metal particles to form a solid matrix by heating the aligned metal particles in a furnace or microwave oven, or heating the aligned metal particles using a laser sintering process with a controlled amount of external heat, to a temperature below the melting point of the metal powder, and oxidizing the matrix to produce the porous catalyst. The catalysts produced by the disclosed methods have a porous body with increased surface area, can assume various microstructures, and consist essentially of metal oxides.

US Patent:

20140134100, May 15, 2014

Filed:

Jan 16, 2014

Appl. No.:

14/157123

Inventors:

- Woodinville WA, US
David G. O'Connor - Woodinville WA, US
Maitham Naeemi - Woodinville WA, US

Assignee:

ASEMBON INC. - Woodinville WA

International Classification:

C01B 3/00
B01J 19/18

US Classification:

4236481, 422619

Abstract:

The current disclosure is directed to a hydrogen-storage system that employs catalytic dehydrogenation of low-molecular-weight amines in a hydrogen reactor. The hydrogen-storage system comprises aliphatic amines and di-amines as organic carriers that store hydrogen covalently, a hydrogen reactor that releases and separates hydrogen gas from the carrier, and metal or metal-oxide catalysts that promote a dehydrogenation reaction to release hydrogen. In certain implementations, a metal or metal-oxide catalyst may be carried on high-surface-area support materials, such as gamma-alumina and metal-organic-framework materials, to enhance catalytic properties. The hydrogen reactor may be a packed-bed reactor, a monolith reactor, or a flow-through hydrogen-membrane reactor. In one implementation, the flow-through hydrogen-membrane reactor comprises an inlet through which the organic hydrogen carrier flows into the reactor, a hydrogen-separation membrane selectively permeable to hydrogen, a recirulation outlet for removing unspent organic carrier, and a hydrogen outlet for releasing hydrogen and reaction byproducts. The spent organic carrier are collected and hydrogenated to regenerate the original fuel.