Brian D Turk, 48Durham, NC

6812189, Nov 2, 2004

Apr 3, 2000

09/541204

Albert A. Vierheilig - Savannah GA
Raghubir P. Gupta - Durham NC
Brian S. Turk - Durham NC

Research Triangle Institute - Research Triangle Park NC
Intercat, Inc. - Sea Girt NJ

B01J 2002

502414, 502504, 502517

The disclosure is directed to sorbent compositions for removing reduced sulfur species (e. g. , H S, COS and CS ) a feed stream. The sorbent is formed from a multi-phase composition including a zinc titanate phase and a zinc oxide-aluminate phase. The sorbent composition is substantially free of unreacted alumina.

6951635, Oct 4, 2005

Sep 26, 2003

10/670206

Santosh Kumar Gangwal - Cary NC, US
Brian Scott Turk - Durham NC, US
Raghubir Prasad Gupta - Durham NC, US

Research Triangle Institute - Research Triangle Park NC

B01D053/48
B01D053/52
B01J020/06
B01J020/34

42324406, 423230, 4232441, 502414, 502504, 502514, 502517

Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAlO) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, containing a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

7067093, Jun 27, 2006

Mar 2, 2004

10/790920

Albert A. Vierheilig - Savannah GA, US
Raghubir P. Gupta - Durham NC, US
Brian S. Turk - Durham NC, US

Research Triangle Institute - Research Triangle Park NC
Intercat, Inc. - Manasquan NJ

B01D 53/48
B01D 53/52

42324406, 423230

Reduced sulfur gas species (e. g. , HS, COS and CS) are removed from a gas stream by compositions wherein a zinc titanate ingredient is associated with a metal oxide-aluminate phase material in the same particle species. Nonlimiting examples of metal oxides comprising the compositions include magnesium oxide, zinc oxide, calcium oxide, nickel oxide, etc.

7291259, Nov 6, 2007

Sep 12, 2001

10/363677

Raghubir P. Gupta - Durham NC, US
Brian S. Turk - Durham NC, US

Research Triangle Institute - Research Triangle Park NC

C10G 25/05

208299, 208244, 208247, 20812025

Processes are disclosed for removing sulfur, including cyclic and polycyclic organic sulfur components such as thiophenes and benzothiophenes, from a hydrocarbon feedstock including fuels and fuel components. The feedstock is contacted with a regenerable sorbent material capable of selectively adsorbing the sulfur compounds present in the hydrocarbon feedstock in the absence of a hydrodesulfurization catalyst. In one embodiment, the sorbent can be an active metal oxide sulfur sorbent in combination with a refractory inorganic oxide cracking catalyst support. In another embodiment, the sorbent can be a metal-substituted refractory inorganic oxide cracking catalyst wherein the metal is a metal which is capable in its oxide form, of adsorption of reduced sulfur compounds by conversion of the metal oxide to a metal sulfide. The processes are preferably carried out in a transport bed reactor.

7682423, Mar 23, 2010

Jun 29, 2007

11/771364

Santosh Kumar Gangwal - Cary NC, US
Brian Scott Turk - Durham NC, US
Raghubir Prasael Gupta - Durham NC, US

Research Triangle Institute - Research Triangle Park NC

B01D 20/06

95136, 95107, 423230, 4232441, 42324406, 502414, 502504, 502514, 502517

Zinc oxide-based sorbents, and processes for preparing and using them are provided. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAlO) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

7923410, Apr 12, 2011

Sep 27, 2006

12/088161

Brian S. Turk - Durham NC, US
Santosh K. Gangwal - Cary NC, US
Raghubir P. Gupta - Durham NC, US

Research Triangle Institute - Research Triangle Park NC

C10G 25/12

502415, 502406, 502439, 208208 R, 208244, 208247, 208248

A sorbent for use in removing sulfur contaminants from hydrocarbon feedstocks is provided, wherein the sorbent contains zinc aluminate in an amount of at least 40 wt % (calculated as ZnAlO); free alumina in an amount of from about 5 wt % to about 25 wt % (calculated as AlO); and iron oxide in an amount of from about 10 wt % to about 30 wt % (calculated as FeO); wherein each of the free alumina and iron oxide are present in non-crystalline form as determined by X-ray diffraction analysis, and a method for producing the sorbent and method for using the sorbent to reduce sulfur contaminants in hydrocarbon feedstocks.

7956006, Jun 7, 2011

Jun 29, 2007

11/771396

Santosh Kumar Gangwal - Cary NC, US
Brian Scott Turk - Durham NC, US
Raghubir Prasad Gupta - Durham NC, US

Research Triangle Institute - Research Triangle Park NC

B01J 20/00

502415, 502414

The disclosure relates to zinc oxide-based sorbents, and processes for preparing and using them. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAlO) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

2012019, Aug 2, 2012

Sep 28, 2010

13/498821

Gunnar Henningsen - Summerfield FL, US
Teddy Merrill Knowlton - Willowbrook IL, US
John George Findlay - Homer Glen IL, US
Jerry Neal Schlather - Kingsport TN, US
Brian S. Turk - Durham NC, US

B01D 53/12

95 12, 95 23, 95 19, 96110

A fluidized reactor system for removing impurities from a gas and an associated process are provided. The system includes a fluidized absorber for contacting a feed gas with a sorbent stream to reduce the impurity content of the feed gas; a fluidized solids regenerator for contacting an impurity loaded sorbent stream with a regeneration gas to reduce the impurity content of the sorbent stream; a first non-mechanical gas seal forming solids transfer device adapted to receive an impurity loaded sorbent stream from the absorber and transport the impurity loaded sorbent stream to the regenerator at a controllable flow rate in response to an aeration gas; and a second non-mechanical gas seal forming solids transfer device adapted to receive a sorbent stream of reduced impurity content from the regenerator and transfer the sorbent stream of reduced impurity content to the absorber without changing the flow rate of the sorbent stream.