AN IMPROVED METHOD FOR PREPARING A SILICA CONTAINING SUPPORT MATERIAL FOR METAL CATALYSTS FROM RICE HUSK

摘要

An improved method for the preparation of a silica supported nickel catalyst for hydrogenation of unsaturated organic materials like oils, fats and fatty acids which comprises;(i) treating rice husk with concentrated nitric acid at ambient temperature as herein dtscribed;(ii) recovering the solid silica-containing material from the reaction mixture of stpe (i) by filtration;(iii) washing the silica-containing material of step (ii) with water until free of acid;(iv) drying the washed product at 100°c;(v) depositing nickel onto the said silica containing material of step (iv) in conventional manner such as herein described;(vi) filtering and washing the silica supported nickel catalyst of step (v) followed by drying; and(vii) reducing the said dried catalyst in hydrogen gas at about 450°c before use, as herein described.