The present invention describes a catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on an oxides support comprising alumina, silica, a spinel and phosphorus. It als o concerns the process for preparation of said catalyst and its use in a Fischer-Tropsch process. The catalyst has an improved hydrothermal and mechanical resistance in a Fischer-Tropsch process while improving its catalytic performances.
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