Calcined pork bone which is mainly composed by hydroxyapatite (HAp) was used as catalytic support of transition metals (Ni, Cu, Co, Fe) for WGS reaction. The catalysts were characterised by TGA, ICP, XRD, FTIR, H-2-TPR, H-2 chemisorption, OSC, CO2-TPD and N-2 adsorption. The activity and selectivity was investigated and correlated with the chemical, structural and textural properties of the catalysts. For comparison, the performance of Ni loaded onto synthetic HAp was also investigated. The catalytic activity followed this trend: Ni > Co > Cu > Fe. Interestingly, natural support decreased methanation activity of Ni and increased stability as compared to synthetic HAp. (C) 2017 Elsevier Ltd. All rights reserved.