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A novel approach to highly dispersing catalytic materials in coal for gasification. Ninth quarterly report, October 1, 1991--December 31, 1991
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic benefits by reducing the amount of K{sub 2}CO{sub 3} required for high coal char reactivities. As was shown in previous reports, coal loading with potassium or calcium at different pHs produced CO{sub 2} gasification activities which increased in the order pH 6 > pH 10 {much_gt} pH 1. The current report shows that a similar trend was obtained when calcium and potassium were simultaneously loaded and char reaction times were less than about 75 min. Beyond this time, the coal impregnated with catalyst at pH 1 became more reactive, reaching 100% conversion after 1.5h. X-ray diffraction analysis suggest that the catalysts are well dispersed around pH 1 and 6 whereas reduced dispersion as obtained at pH 10. The reactivities are independent of the surface areas of the coals.
Date:
February 10, 1992
Creator:
Abotsi, G. M. K. & Bota, K. B.
Object Type:
Report
System:
The UNT Digital Library
A novel approach to highly dispersing catalytic materials in coal for gasification
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic benefits by reducing the amount of K{sub 2}CO{sub 3} required for high coal char reactivities. As was shown in previous reports, coal loading with potassium or calcium at different pHs produced CO{sub 2} gasification activities which increased in the order pH 6 > pH 10 {much gt} pH 1. The current report shows that a similar trend was obtained when calcium and potassium were simultaneously loaded and char reaction times were less than about 75 min. Beyond this time, the coal impregnated with catalyst at pH 1 became more reactive, reaching 100% conversion after 1.5h. X-ray diffraction analysis suggest that the catalysts are well dispersed around pH 1 and 6 whereas reduced dispersion as obtained at pH 10. The reactivities are independent of the surface areas of the coals.
Date:
February 10, 1992
Creator:
Abotsi, G.M.K. & Bota, K.B.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0141.0367]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Connywerdy's skilful fingers string beads on his loom."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0368]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Kevin Connywerdy teaching beadwork to Kenny Linn, Norman."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0369]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Kevin Connywerdy - prepares new beadwork for his dance outfit."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0372]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Feather work enhances dance fans, and it takes skillful fingers to string new beads on a loom."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0373]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Connywerdy's skillful fingers string new beads on his loom."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0374]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Kevin Connywerdy teaches Kenny Linn the art of beadwork. His hands move across the wooden loom with the precision of a skilled surgeon."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0424]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
April 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0425]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
April 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0246.0324]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
November 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0361B.0039]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Assistant Attorney General Neal Leader shows off part of his political memorabilia collection - including delegate ribbons from the 1905 statehood convention in Guthrie and from the Oklahoma delegation to the 1908 Democratic National Convention in Denver."
Date:
December 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1032.0380]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Paul Prather opens the doors of the garage where the pieces of the sculture are stored."
Date:
January 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1092.0305]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Artist Bill Roberson, of Claremore, has an unusual canvas for his indian art - turkey feathers and parrot plumes."
Date:
May 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1213.0889]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Insurance adjuster Mick Cottom inspects damage at the Quality Inn after high winds hit Glenpool on Friday."
Date:
June 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1321.0012]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Students attend classes in one of two portable buildings opened this week to combat overcrowding problems at the University of Central Oklahoma."
Date:
October 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1435.0694]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Storyteller Al Bostick entertains the estimated 8,000 schoolchildren attending the national Young Readers Day literacy rally Tuesday at the Myriad in downtown Oklahoma city."
Date:
November 10, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 76, No. 173, Ed. 1 Wednesday, June 10, 1992
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
June 10, 1992
Creator:
Baldwin, Sharon
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 76, No. 194, Ed. 1 Friday, July 10, 1992
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
July 10, 1992
Creator:
Baldwin, Sharon
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0104.0315]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Linda Sue Bratcher received a $150,000 settlement from the Bray Doyle school district."
Date:
June 10, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0104.0316]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 10, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0109.0089]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Doebelly" Brooks, 72, enjoys a drumstick Sunday afternoon at Washington Park."
Date:
August 10, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0110.0188]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dan Brown director of the Oklahoma Taxpayers Union, savors victory Tuesday night with Olive Mcintyre, left."
Date:
March 10, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0110.0189]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Dan Brown receives updated figures via the telephone SQ 640"
Date:
March 10, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History