Modified .theta.-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas
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United States of America Patent
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Feb 17, 2004
Grant Date -
Feb 13, 2003
app pub date -
May 13, 2002
filing date -
May 18, 2001
priority date (Note) -
Expired
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Abstract
A modified .theta.-Al.sub.2 O.sub.3 -supported nickel reforming catalyst and its use for producing synthesis gas from natural gas, more specifically to a nickel reforming catalyst expressed by the following formula 1, having improved coke resistance, high-temperature catalysis stability and catalytic activity, which is prepared by coating nickel or mixture of nickel and cocatalyst (M.sub.1 --M.sub.2 --Ni) on a .theta.-Al.sub.2 O.sub.3 support modified with metal (M.sub.3 --M.sub.4 --ZrO.sub.2 /.theta.-Al.sub.2 O.sub.3), and its use for producing synthesis gas from natural gas through steam reforming, oxygen reforming or steam-oxygen reforming, M.sub.1 --M.sub.2 --Ni/M.sub.3 --M.sub.4 --ZrO.sub.2 /.theta.-Al.sub.2 O.sub.3 (1) wherein M.sub.1 is an alkali metal, each of M.sub.2 and M.sub.3 is an alkaline earth metal; and M.sub.4 is a IIIB element or a lanthanide.
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