| abstract |
The invention discloses a preparation method of a highly active anti-sulfur poisoning palladium carbon catalyst. The treated activated carbon; step 2, adding the acid-treated activated carbon into the modifier solution, and stirring to obtain a slurry; step 3, adding the slurry to the auxiliary metal salt solution, and stirring to obtain the activated carbon solution loaded with the auxiliary agent; step 4. Add the activated carbon solution of the loading auxiliary to the palladium chloride solution, adjust the pH, and stir to obtain a palladium suspension; Step 5, reduce the palladium suspension, then filter, wash the solid obtained by filtration, and spin dry to obtain Highly active anti-sulfur poisoning palladium-carbon catalyst. The metal on the surface of the palladium-carbon catalyst carrier obtained by the invention is highly dispersed, and has high catalytic activity and anti-sulfur stability in the hydrogenation reaction of nitrogen benzyl aniline and the hydrogenation reaction of o-nitrotoluene. |