A　series　of　supported　Ni/Mg/Al　catalysts　with　Ni　loadings　of　3-18　wt%　were　prepared　from　Ni-Mg-Al　layered　double　hydroxides　and　tested　for　the　CH4-CO2　reforming.　The　influence　of　Ni　loading　on　the　catalyst　activity　and　stability　was　studied.　It　is　found　that　the　catalyst　activity　increased　with　increasing　the　Ni　loading.　However,　the　CO　disproportionation　became　significant　as　the　Ni　loading　increased.　The　long-term　stability　of　the　Ni/Mg/Al　catalysts　was　influenced　by　the　Ni　loading　as　well　as　the　reaction　temperature.　At　a　high　temperature　of　1023　K,　the　catalyst　stability　increased　with　increasing　the　Ni　loading,　whereas　it　decreased　with　increasing　the　Ni　loading　at　a　low　temperature　of　873　K.　The　characterization　on　the　spent　Ni/Mg/Al　catalysts　showed　that　the　sintering　of　Ni　metal　particles　increased　with　increasing　the　Ni　loading,　and　it　became　more　severe　at　873　K　than　at　1023　K.　On　the　other　hand,　the　coke　deposition　at　1023　K　tended　to　decrease　with　increasing　the　Ni　loading,　and　an　opposite　tendency　was　observed　at　873　K.　The　coke　deposition　particularly　the　encapsulating　carbon　was　considered　to　be　responsible　for　the　catalyst　deactivation.　A　Ni　loading　of　12　wt%　would　be　suitable　for　the　Ni/Mg/Al　catalyst　considering　its　high　activity,　good　stability,　and　less　coke　deposition　at　high　temperature.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.