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By utilizing the abundant metal ions in modified vermiculite waste solution and doping with Ni ions, a Ni-based precursor like hydrotalcite was directly synthesized using co-precipitation method for methane dry reforming reaction. Performance testing conducted at 750 °C showed that the catalyst exhibited excellent activity, with a CH 4 conversion rate of 85.76 % and a CO 2 conversion rate of 84.42 %. This outstanding performance can be attributed to the uniform distribution and appropriate particle size of the catalyst prepared from the hydrotalcite precursor, as well as the strong metal-support interaction between metal carriers due to the orderly distribution of nickel. • Hydrotalcite were prepared by the co-precipitation method using vermiculite waste solution. • Vermiculite-derived hydrotalcite promotes methane cracking. • The strong metal-support interaction were provided by the structure of Hydrotalcite. • 15 wt% Ni can be used as optimal concentration in order to obtain high performance. [ABSTRACT FROM AUTHOR]