Process for removing sulfur oxides or nitrogen oxides from a gaseous mixture
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-021/00
출원번호
US-0488872
(1995-06-09)
발명자
/ 주소
Bhattacharyya Alakananda (Wheaton IL) Foral Michael J. (Aurora IL) Reagan William J. (Naperville IL)
출원인 / 주소
Amoco Corporation (Chicago IL 02)
인용정보
피인용 횟수 :
31인용 특허 :
24
초록▼
A collapsed composition is described which is substantially composed of microcrystallites collectively of the formula: m2m2+Al2-pMp3+TrO7+rㆍs where M2+is a divalent metal, M3+is a trivalent metal, and T is vanadium, tungsten, or molybdenum. The microcrystallites are so small as to be undetectable t
A collapsed composition is described which is substantially composed of microcrystallites collectively of the formula: m2m2+Al2-pMp3+TrO7+rㆍs where M2+is a divalent metal, M3+is a trivalent metal, and T is vanadium, tungsten, or molybdenum. The microcrystallites are so small as to be undetectable through conventional x-ray diffraction techniques, yet high resolution electron microscopy reveals that a substantial portion of the microcrystallites are composed of a solid solution having aluminum oxide molecularly dispersed in a divalent metal monoxide crystal structure. Another portion of the microcrystallites are constituted by a spinel phase. The collapsed composition is suitable as a sulfur oxide absorbent, having comparatively high capacity and comparatively fast absorption and desorption rates, and is also suitable as a nitrogen oxide reduction catalyst. The collapsed composition may be produced by heat treating a layered mixed hydroxide clay having interlayer anions in monometalate form. A sulfur oxide separation process is presented. A nitrogen oxide reduction process is also presented.
대표청구항▼
A process for reducing at least one of (1) the sulfur oxide content of a sulfur-oxide containing gas, and (2) the nitrogen oxide content of a nitrogen oxide-containing gas which includes contacting said gas with a material at conditions effective to reduce at least one of (1) the sulfur oxide conten
A process for reducing at least one of (1) the sulfur oxide content of a sulfur-oxide containing gas, and (2) the nitrogen oxide content of a nitrogen oxide-containing gas which includes contacting said gas with a material at conditions effective to reduce at least one of (1) the sulfur oxide content of said gas and (2) the nitrogen oxide content of said gas, wherein at least a portion of said material is a composition produced by a process which comprises: calcining at a temperature of at least about 450 degrees C. for about one hour or more a layered mixed hydroxide of the formula: [Figure] where M2+is a divalent metal selected from the group consisting of magnesium, calcium, zinc, barium and strontium; x is about 1.1 to about 3.5; M3+is a trivalent metal selected from the group consisting of cerium, lanthanum, iron, chromium, vanadium, and cobalt; n is about 0.01 to about 0.4; J is VO3, HVO4, VO4, V2O7, HV2O7, V3O9, V4O12; WO4, or MoO4; v is the net ionic charge associated with J; k is about 0.01 to less than 2; A is CO3, OH, SO3, SO4, Cl, or NO3; q is the net ionic charge associated with A; and m is a positive number; to produce a dehydrated and at least partially collapsed composition which comprises solid solution microcrystallites having aluminum oxide dispersed in an oxide of the divalent metal and of spinel phase microcrystallites, each of the microcrystallites having the greatest linear dimension in the range of about 0.1 to about 30 nanometers.
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이 특허에 인용된 특허 (24)
Bhattacharyya Alakananda (Wheaton IL) Foral Michael J. (Aurora IL) Reagan William J. (Naperville IL), Absorbent and process for removing sulfur oxides from a gaseous mixture.
Chin Arthur A. (Cherry Hill NJ) Johnson Ivy D. (Medford NJ) Kresge Charles T. (Westchester PA) Sarli Michael S. (Haddonfield NJ), Additive for vanadium capture in catalytic cracking.
Bhattacharyya Alakanada (Columbia MD) Cormier ; Jr. William E. (Ellicott City MD) Woltermann Gerald M. (Westminster MD), Alkaline earth metal spinels and processes for making.
Moore Andrew S. (North Brunswick NJ) Bartholic David B. (Watchung NJ) Barger Dwight F. (High Bridge NJ) Reagan William J. (Englishtown NJ), Gas/solid contact method for removing sulfur oxides from gases.
Yoo Jin S. (Flossmoor IL) Radlowski Cecelia A. (Riverside IL) Karch John A. (Marriottsville MD) Bhattacharyya Alakananda (Columbia MD), Metal-containing spinel composition and process of using same.
Yoo Jin S. (Flossmoor IL) Radlowski Cecelia A. (Riverside IL) Karch John A. (Marriottsville MD) Bhattacharyya Alakananda (Columbia MD), Metal-containing spinel composition and process of using same.
Neal Lewis G. (Bethel Park PA) Ma Warren (Pittsburgh PA) Chang Min-Yan (Bethel Park PA) Zhou Qian (Bethel Park PA) Pereira Carmo J. (Silver Spring MD) Plumlee Karl W. (Elliocott City MD) Beeckman Jea, Nitrogen oxides and sulfur oxides removal utilizing transport line adsorber.
Bertolacini Ralph J. (Naperville IL) Hirschberg Eugene H. (Park Forest IL) Modica Frank S. (Downers Grove IL), Process for removing sulfur oxides from a gas.
Bertolacini Ralph J. (Naperville IL) Hirschberg Eugene H. (Park Forest IL) Modica Frank S. (Downers Grove IL), Process for removing sulfur oxides from a gas.
Stamires, Dennis; O'Connor, Paul; Jones, William; Brady, Michael, Process for producing anionic clay using boehmite which has been peptized with an acid.
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