A NiW, NiMo or NiMoW bulk catalyst precursor composition comprising nickel oxide, and molybdenum oxide or tungsten oxide or mixtures thereof, and an organic component prepared from an organic additive, wherein the total amount of molybdenum oxide and tungsten oxide is at least 30 wt %, the molar ratio of nickel to molybdenum plus tungsten is higher than 0.05, the molar ratio of carbon to molybdenum plus tungsten is between 1.5 and 10;
- and wherein the organic additive is selected from Acetic acid, Aspartic acid, Citric acid, Formic acid, Fumaric acid, Gluconic acid, Glutamic acid, Glyoxylic acid, Ketoglutaric acid, Maleic acid, Malic acid, Oxaloacetic acid, Propionic acid, Pyruvic acid, Succinic acid, Fructose, Glucose, Lactose, Saccharose, Sorbitol, Xylitol, Serine and mixtures thereof where the bulk catalyst precursor further comprises Ni-crystals detected by transmission electron microscopy technique (TEM).