Supported nickel catalyst from hydroxycarbonate of nickel and aluminium

Abstract

The hydroxycarbonate of nickel and aluminium (Ni/Al = 3) with a hydrotalcite-like structure is an outstanding precursor of the active component of supported nickel catalysts. Good mechanical strength and suitable nickel content of these catalysts, which are necessary for practical applications, can be achieved by mechanical mixing of this compound with an additional support. The catalyst prepared from a mixture of 56.5 wt-Vo of nickel-aluminium hydroxycarbonate and 43.5 wt-Vo of y-alumina was proven to have a stable catalytic activity in the methanation reaction at 2 MPa and 800 K.

Two-Dimensional Layered Double Hydroxides for Reactions of Methanation and Methane Reforming in C1 Chemistry

“…Ni-Al LDH-derived catalysts have been deeply investigated and are well known for CO methanation. In 1994, Rathouskf et al [ 43 ] formulated NiAl-CO 3 LDH-derived mixed oxide (NiAl-LDO) as the CO methanation catalyst, which maintained excellent activity for the methanation reaction under 2 MPa and 527 °C. The NiAl-LDO catalyst with 56.5 wt % Ni achieved 97% of CO conversion in the pilot methanation unit.…”