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Title: Selective methane oxidation over promoted oxide catalysts. Quarterly report, September--November, 1994

Abstract

Experimental research in the direct conversion of methane to methanol using a double bed reactor and with gaseous steam as cofeed with the CH{sub 4}/air reactant mixture continued during this quarter in order to improve the methanol space time yield. Work was carried out along several pathways that included a stability test of the second bed catalyst 1%V{sub 2}O{sub 5}/SiO{sub 2} that yielded up to 100 g methanol/kg cat/hr and investigation of the effect of pressure on methanol yields. Redox dopants were put onto several metal oxide supports in an attempt to find better second bed catalysts. A catalyst that was reasonably selective towards oxygenates was obtained when SiO{sub 2} was used as the support and low quantities of Fe or Cu were utilized. Attempts were also made to incorporate alkali ions into the catalysts to improve the surface hydrolyzability. Experiments were carried out to examine the effect of pressure and temperature on the oxygenate productivity over a double-layered catalyst bed of 0.1 g 1 wt% SO{sub 4}{sup 2{minus}}/Sr/La{sub 2}O{sub 3} as the first bed and 0.1 g 1 wt% V{sub 2}O{sub 5}/SiO{sub 2} as the second bed without H{sub 2}O cofeed in a glass-lined tubular down-flow reactor at pressuresmore » of 0.1--3.2 MPa (14.7--460 psig), temperatures of 450--500 C, and with a reactant flow rate having a ratio of CH{sub 4}/air = 150/50 ml/min. Reaction products observed were methanol, formaldehyde, carbon dioxide, acetylene, ethylene, and ethane. The overall activity of the catalyst increased at low pressures and high temperature. However, testing at low temperature and high pressure was found to favor methanol production.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lehigh Univ., Bethlehem, PA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
28269
Report Number(s):
DOE/MC/29228-3976
ON: DE95000060; TRN: AHC29510%%74
DOE Contract Number:  
FG21-92MC29228
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1994
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 10 SYNTHETIC FUELS; METHANE; OXIDATION; METHANOL; SYNTHESIS; VANADIUM OXIDES; CATALYTIC EFFECTS; SULFATES; STRONTIUM; IRON; COPPER; PROGRESS REPORT; CHEMICAL REACTION YIELD; DOPED MATERIALS; CATALYST SUPPORTS; SILICON OXIDES; LANTHANUM OXIDES; MAGNESIUM OXIDES; ZIRCONIUM OXIDES; YTTRIUM OXIDES; EXPERIMENTAL DATA

Citation Formats

Klier, K, Herman, R G, Shi, C, Wang, C B, and Sun, Q. Selective methane oxidation over promoted oxide catalysts. Quarterly report, September--November, 1994. United States: N. p., 1994. Web. doi:10.2172/28269.
Klier, K, Herman, R G, Shi, C, Wang, C B, & Sun, Q. Selective methane oxidation over promoted oxide catalysts. Quarterly report, September--November, 1994. United States. doi:10.2172/28269.
Klier, K, Herman, R G, Shi, C, Wang, C B, and Sun, Q. Thu . "Selective methane oxidation over promoted oxide catalysts. Quarterly report, September--November, 1994". United States. doi:10.2172/28269. https://www.osti.gov/servlets/purl/28269.
@article{osti_28269,
title = {Selective methane oxidation over promoted oxide catalysts. Quarterly report, September--November, 1994},
author = {Klier, K and Herman, R G and Shi, C and Wang, C B and Sun, Q},
abstractNote = {Experimental research in the direct conversion of methane to methanol using a double bed reactor and with gaseous steam as cofeed with the CH{sub 4}/air reactant mixture continued during this quarter in order to improve the methanol space time yield. Work was carried out along several pathways that included a stability test of the second bed catalyst 1%V{sub 2}O{sub 5}/SiO{sub 2} that yielded up to 100 g methanol/kg cat/hr and investigation of the effect of pressure on methanol yields. Redox dopants were put onto several metal oxide supports in an attempt to find better second bed catalysts. A catalyst that was reasonably selective towards oxygenates was obtained when SiO{sub 2} was used as the support and low quantities of Fe or Cu were utilized. Attempts were also made to incorporate alkali ions into the catalysts to improve the surface hydrolyzability. Experiments were carried out to examine the effect of pressure and temperature on the oxygenate productivity over a double-layered catalyst bed of 0.1 g 1 wt% SO{sub 4}{sup 2{minus}}/Sr/La{sub 2}O{sub 3} as the first bed and 0.1 g 1 wt% V{sub 2}O{sub 5}/SiO{sub 2} as the second bed without H{sub 2}O cofeed in a glass-lined tubular down-flow reactor at pressures of 0.1--3.2 MPa (14.7--460 psig), temperatures of 450--500 C, and with a reactant flow rate having a ratio of CH{sub 4}/air = 150/50 ml/min. Reaction products observed were methanol, formaldehyde, carbon dioxide, acetylene, ethylene, and ethane. The overall activity of the catalyst increased at low pressures and high temperature. However, testing at low temperature and high pressure was found to favor methanol production.},
doi = {10.2172/28269},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {12}
}