Composition for a desulfurizer with a high sulfur capacity and the process of making the same

A process for preparing a composition for a desulfurizer, wherein the composition comprises three kinds of iron oxides which are ferroferric oxide in the form of cubic crystalline phase (Fe3O4), amorphous ferric oxide (Fe2O3) and amorphous ferric oxide monohydrate (Fe2O3.H2O), wherein the contents of the iron oxides in said composition are:

• 3.0 wt % to 3.5 wt % of Fe3O4, 28 wt % to 30 wt % of Fe2O3, 60 wt % to 62 wt % of Fe2O3.H2O, the balance being water and residual by-products of this reaction, the above percentages are based on the total weight of said compositions, the process comprising the following steps:
• (1) mixing a solid ferrous compound with a solid hydroxide at a molar ratio of iron to hydroxyl in the range from 1:2 to 1:3;
• (2) kneading the mixture feeds obtained in step (1) and making them react completely;
• (3) drying the products obtained in step (2) in the air;
• (4) washing and filtering the feeds obtained instep (3);
• and
• (5) drying at ambient temperature or baking the solids obtained in step (4) to form the composition for a desulfurizer.