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Title: Catalysts for conversion of methane to higher hydrocarbons

Abstract

Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700.degree. to 900.degree. C. are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025-0.4 mole and about 0.1-0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800.degree. to 850.degree. C. with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C.sub.2 hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.

Inventors:
 [1]
  1. Morgantown, WV
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
868626
Patent Number(s):
5177294
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
catalysts; conversion; methane; hydrocarbons; converting; ethane; ethylene; presence; oxygen; temperatures; range; 700; degree; 900; described; comprise; calcium; oxide; gadolinium; respectively; promoted; 025-0; mole; 1-0; sodium; pyrophosphate; preferred; reaction; temperature; 800; 850; oxygen-to-methane; ratio; provides; essentially; constant; hydrocarbon; yield; 12; 19; percent; period; time; 20; hours; calcium oxide; reaction temperature; essentially constant; gadolinium oxide; converting methane; /585/

Citation Formats

Siriwardane, Ranjani V. Catalysts for conversion of methane to higher hydrocarbons. United States: N. p., 1993. Web.
Siriwardane, Ranjani V. Catalysts for conversion of methane to higher hydrocarbons. United States.
Siriwardane, Ranjani V. Fri . "Catalysts for conversion of methane to higher hydrocarbons". United States. https://www.osti.gov/servlets/purl/868626.
@article{osti_868626,
title = {Catalysts for conversion of methane to higher hydrocarbons},
author = {Siriwardane, Ranjani V},
abstractNote = {Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700.degree. to 900.degree. C. are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025-0.4 mole and about 0.1-0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800.degree. to 850.degree. C. with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C.sub.2 hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

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