Ranko P Bontchev

US Patent:

8507004, Aug 13, 2013

Filed:

Dec 17, 2008

Appl. No.:

12/336953

Inventors:

Robert C. Moore - Edgewood NM, US
Ranko Bontchev - Albuquerque NM, US

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B01J 20/04
C02F 1/42
A61K 33/08
A61K 33/30
A61K 9/14
A61P 1/00

US Classification:

424489, 210688, 502414, 424692, 424641

Abstract:

Systems and methods for use of magnesium hydroxide, either directly or through one or more precursors, doped with a divalent or trivalent metal cation, for removing arsenic from drinking water, including water distribution systems. In one embodiment, magnesium hydroxide, Mg(OH)(a strong adsorbent for arsenic) doped with a divalent or trivalent metal cation is used to adsorb arsenic. The complex consisting of arsenic adsorbed on Mg(OH)doped with a divalent or trivalent metal cation is subsequently removed from the water by conventional means, including filtration, settling, skimming, vortexing, centrifugation, magnetic separation, or other well-known separation systems. In another embodiment, magnesium oxide, MgO, is employed, which reacts with water to form Mg(OH). The resulting Mg(OH)doped with a divalent or trivalent metal cation, then adsorbs arsenic, as set forth above. The method can also be used to treat human or animal poisoning with arsenic.

US Patent:

8507403, Aug 13, 2013

Filed:

Jun 27, 2008

Appl. No.:

12/163235

Inventors:

Miodrag Oljaca - Albuquerque NM, US
Toivo T. Kodas - Albuquerque NM, US
Ranko P. Bontchev - Albuquerque NM, US
Klaus Kunze - Albuquerque NM, US
Kenneth C. Koehlert - Albuquerque NM, US

Assignee:

Cabot Corporation - Boston MA

International Classification:

B01J 23/00
B01J 21/00
B01J 20/00
B01J 29/00
B01J 37/00

US Classification:

502300, 502 63, 502 64, 502 73, 502 74, 502104, 502107, 502110, 502111, 502113, 502117, 502302, 502303, 502304, 502305, 502306, 502307, 502308, 502309, 502310, 502311, 502312, 502313, 502314, 502315, 502316, 502317, 502318, 502319, 502320, 502321, 502322, 502323, 502324, 502325, 502326, 502327, 502328, 502329, 502330, 502331, 502332, 502333, 502334, 502335, 502336, 502337, 502338, 502339, 502340, 502341, 502342, 502343, 502344, 502345, 502346, 502347, 502348, 502349, 502350, 502351, 502352, 502353, 502354, 502355, 502415, 502439

Abstract:

A process is described for producing a powder batch comprises a plurality of particles, wherein the particles include (a) a first catalytically active component comprising at least one transition metal or a compound thereof; (b) a second component different from said first component and capable of removing oxygen from, or releasing oxygen to, an exhaust gas stream; and (c) a third component different from said first and second components and comprising a refractory support. The process comprises providing a precursor medium comprising a liquid vehicle and a precursor to al least one of said components (a) to (c) and heating droplets of said precursor medium carried in a gas stream to remove at least part of the liquid vehicle and chemically convert said precursor to said at least one component.

US Patent:

20110245073, Oct 6, 2011

Filed:

Aug 6, 2010

Appl. No.:

12/851869

Inventors:

Miodrag OLJACA - Albuquerque NM, US
Ranko P. BONTCHEV - Albuquerque NM, US
Paolina ATANASSOVA - Albuquerque NM, US
Berislav BLIZANAC - Albuquerque NM, US
Yipeng SUN - Albuquerque NM, US
Matthew EZENYILIMBA - Sandia Park NM, US
George FOTOU - Albuquerque NM, US
Kenneth C. Koehlert - Albuquerque NM, US

Assignee:

CABOT CORPORATION - Albuquerque NM

International Classification:

B01J 23/10
B01J 23/44
B01J 23/42
B01J 23/58

US Classification:

502304, 502339, 502333, 502328, 977773

Abstract:

A catalyst composition comprises a particulate support and catalyst nanoparticles on the particulate support. The catalyst nanoparticles comprise an alloy of platinum and palladium in an atomic ratio of from about 25:75 to about 75:25 and are present in a concentration of between about 3 and about 10 wt % weight percent of the catalyst composition. The catalyst composition has an X-ray diffraction pattern that is substantially free of the (311) diffraction peak assignable to PtPd, where 0.25≦x≦0.75.

US Patent:

20220174985, Jun 9, 2022

Filed:

Aug 23, 2021

Appl. No.:

17/409770

Inventors:

Matthew William Smith - Camarillo CA, US
Haijun Wan - Camarillo CA, US
Richard Wilson Belcher - Oxnard CA, US
Ranko Panayotov Bontchev - Monrovia CA, US
Brian Buege - Centennial CO, US

International Classification:

A23K 10/30
B01J 2/00
A23K 20/10
C01B 32/05
B01J 20/28
B01J 20/30
B01J 20/12
B01J 20/24
B01J 20/20
A61K 9/16
A61K 33/44
A61L 9/012
B01J 2/28
C05D 9/00
C05C 5/00
C05B 17/00
A61L 9/014
C05F 11/00
B01J 2/12
C09K 17/50
C09K 17/48
C09K 17/04
A23K 20/163
A23K 40/10
A23K 50/90
A23K 50/00
A23K 20/147
A23K 50/40
A23K 50/20
A23K 50/75
C05G 3/80
C05G 5/12
A01C 1/06
C05G 5/23
C09K 17/16
C09K 17/14
C05G 5/14

Abstract:

A method for capturing material extracted from biochar is provided comprising the steps of: (i) providing a biochar; (ii) contacting the biochar with an extraction media, where the extraction media causes the removal of residual compounds from the pores and surface of the biochar, creating a resulting extract comprised of the extraction media and removed compounds; and (iii) collecting the resulting extract. The method also can include other steps of extraction and purification. The method further comprises the step of applying the resulting extract to seeds, plants, soil, other agricultural products, or for use in other applications. A biochar having high levels of soluble signaling compounds is also provided, where the biochar is derived from a biomass source that together with predefined pyrolysis parameters produces resulting biochar having increased levels of soluble signaling compounds that are known to increase seed germination rates and early plant growth. Such soluble signaling compounds can then be collected in a biochar extract by contacting the biochar with an extraction media.

US Patent:

20210291139, Sep 23, 2021

Filed:

Jan 15, 2021

Appl. No.:

17/149988

Inventors:

- Albuquerque NM, US
Herbert Lee Nigg - Los Ranchos NM, US
Millicent Capstaff - Raeford NC, US
Viswanath Krishnamoorthy - Albuquerque NM, US
Ranko P. Bontchev - Albuquerque NM, US

International Classification:

B01J 19/24
B01J 15/00
C01B 3/48
B01J 19/00

Abstract:

A system for production of hydrogen includes a steam methane reformer (SMR) including an outer tube, wherein a first end of the outer tube is closed; and an inner tube disposed in the outer tube, wherein a first end of the inner tube is open. An SMR flow channel is defined within the inner tube and an annular space is defined between the outer tube and the inner tube. The flow channel is in fluid communication with the annular space. The SMR includes a foam disposed in the annular space. The system includes a water gas shift reactor comprising a reaction tube, wherein a reaction channel is defined within the reaction tube, and wherein the reaction channel is in fluid communication with the SMR flow channel; a heat transfer material disposed in the reaction channel; and a catalyst disposed in the reaction channel.

US Patent:

20210292164, Sep 23, 2021

Filed:

Mar 17, 2020

Appl. No.:

16/821676

Inventors:

- Albuquerque NM, US
Robert Charles Moore - Edgewood NM, US
Millicent Capstaff - Raeford NC, US
Ranko P. Bontchev - Albuquerque NM, US
Viswanath Krishnamoorthy - Albuquerque NM, US

International Classification:

C01B 3/16
B01J 19/24
B01J 19/00
B01J 15/00

Abstract:

A water gas shift (WGS) reactor system includes a housing; a reaction tube disposed in the housing, wherein a reaction channel is defined within the reaction tube and a cooling fluid channel is defined between the housing and the reaction tube; a catalyst disposed in the reaction channel, the catalyst configured to catalyze a hydrogen generation reaction; and a heat transfer material disposed in the reaction channel.

US Patent:

20210292165, Sep 23, 2021

Filed:

Mar 17, 2020

Appl. No.:

16/821652

Inventors:

- Albuquerque NM, US
Herbert Lee Nigg - Los Ranchos NM, US
Ranko P. Bontchev - Albuquerque NM, US
Millicent Capstaff - Raeford NC, US
Robert Charles Moore - Edgewood NM, US

International Classification:

C01B 3/38
B01J 19/24
B01J 19/00
B01J 15/00

Abstract:

A steam methane reformer (SMR) system includes an outer tube, wherein a first end of the outer tube is closed; an inner tube disposed in the outer tube, wherein a first end of the inner tube is open. A flow channel is defined within the inner tube and an annular space is defined between the outer tube and the inner tube, the flow channel being in fluid communication with the annular space. The SMR system includes a catalytic foam disposed in the annular space between the outer tube and the inner tube, the catalytic foam comprising a catalyst.

US Patent:

20210292166, Sep 23, 2021

Filed:

Mar 17, 2020

Appl. No.:

16/821618

Inventors:

- Albuquerque NM, US
Herbert Lee Nigg - Los Ranchos NM, US
Millicent Capstaff - Raeford NC, US
Viswanath Krishnamoorthy - Albuquerque NM, US
Ranko P. Bontchev - Albuquerque NM, US

International Classification:

C01B 3/48
B01J 19/24
B01J 19/00
B01J 15/00

Abstract:

A method for producing hydrogen includes flowing a first gas along a bayonet flow path of a steam methane reformer (SMR) to produce a first product, including flowing the first gas through a foam disposed along the bayonet flow path; providing the first product produced in the SMR to an input of a water gas shift (WGS) reaction channel defined within a reaction tube of a WGS reactor; and flowing a second gas including the first product through the WGS reaction channel to produce a second product. Flowing the second gas includes flowing the second gas across a heat transfer material disposed in the WGS reaction channel to reduce the temperature of the flowing second gas; and flowing the second gas across a WGS catalyst disposed in the reaction channel.