A modified .crclbar.-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 Al.sub.2
O.sub.3 support modified with metal (M.sub.3 -M.sub.4 -ZrO.sub.2
/.crclbar.-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 /.crclbar.-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.
