TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: the ceramic material is selected from group formed by zirconium oxide, partially stabilized zirconium oxide, stabilized zirconium oxide, yttrium oxide, doped yttrium oxide, titanium oxide, aluminosilicates, cordierite, aluminum oxide, hydrated aluminas, magnesium oxide, talc, nickel oxide, iron oxides, cerium oxide, doped cerium oxide, oxides of perovskite structure, compounds comprising titanium of the type La4Sr8Ti11Mn1-xGaxO38 with 0 less than or equal to x less than or equal to 1 and La4Sr8Ti12-nMnnO38 with 0 less than or equal to n less than or equal to 1, compounds of the type BaTiO3, BaZrO3, Pb(Mg0.25Nb0.75)O3, Ba(Zn0.25Nb0.75)O3, Pb(Zn0.25Nb0.75)O3, PbTiO3, CaCu3Ti4O12, compounds of bimevox-type structure, compounds of lamox-type structure, compounds of the type SrCe1-xMxO3 with 0 less than or equal to x less than or equal to 1 and M being a rare-earth metal, compounds of the type BaCe1-xMxO3, with 0 less than or equal to x less than or equal to 1 and M being a rare-earth metal, compounds of the family LaxSr1-xScO3 with 0 less than or equal to x less than or equal to 1, zeolites of structure Nax1Cax2Mgx3Bax4Kx5Alx6(Six7Ox8)x9H2O, x1 to x9 being positive integers or zero satisfying the following conditions: x6 not greater than 0, x7 not greater than 0, x8 not greater than 0, x9 not greater than 0 and x1 + x2 + x3 + x4 + x5 not greater than 0, silicon carbide, silicon nitride, boron nitride, boron carbide, tungsten carbide, molybdenum disilicide MoSi2 and titanium boride TiB2, and its mixtures. The product has been sintered. The crystal growth activator comprises zirconium acetate. Preferred Parameters: The mean size is greater than 2 mu m and less than 200 mu m. At least 70% by number of the pores are frustoconical tubular pores opening at their two ends with wide and narrow apertures, respectively, known as through-pores, the ratio of the mean equivalent diameter of the narrow apertures to the mean equivalent diameter of the large apertures of the through-pores being less than 0.95. The shape of the pores is such that: at least 60% by number of the pores have a convexity index Ic of greater than 87%, and/or at least 40% by number of the pores have a convexity index Ic of greater than 88%, and/or at least 30% by number of the pores have a convexity index Ic of greater than 89%, and/or at least 24% by number of the pores have a convexity index Ic of greater than 90%, and/or at least 20% by number of the pores have a convexity index Ic of greater than 91%, and/or at least 16% by number of the pores have a convexity index Ic of greater than 92%, and/or at least 4% by number of the pores have a convexity index Ic of greater than 93%. At least part of the product having a zirconia content by weight of greater than 1.5% and less than 40%. The product comprising pores, at least 70% by number of the pores being tubular pores extending substantially parallel to each other in a longitudinal direction, the cross sections of the pores having, in at least one cross-section plane, an average size of between 1 and 10 mu m, the product being used in an application for a microreactor and/or for filtration, or between 2 and 5 mu m, the product not being in accordance with Claim 4 and being used in an application for an electrode of a solid oxide fuel cell of the Solid Oxide Fuel Cell (SOFC) type, or between 10 and 30 mu m, the product not being in accordance with Claim 7 and being used in an application for an electrolyte of a solid oxide fuel cell of the SOFC type, or between 100 and 270 mu m, the product not being in accordance with any one of Claims 4 to 7 and being used in an application for a heat exchanger, or between 1 and 100 mu m, the product being used in an application for a single-chamber fuel cell. Preferred Method: In manufacturing porous product, in step (a), zirconium acetate is added to the slip in an amount such that the concentration of zirconium provided by the zirconium acetate is between 14 g/L and 170 g/L of aqueous liquid phase; and the powder of ceramic particles is introduced into the aqueous liquid phase after introduction of the zirconium acetate or zirconium acetate precursor(s); and the pH of the slip is adjusted to between 2.75 and 5; and the amount of powder of ceramic particles in the slip is less than 50% by volume; and where, in step (c), the speed of the solidification front is less than 400 mu m/second. EXAMPLE - No suitable example given.