Preparation of highly active NiW hydrotreating model catalysts with 1,2-cyclohexanediamine-N,N,N′N′-tetraacetic acid (CyDTA) as a chelating agent

Abstract

Changing the order in which oxidic W and Ni convert to sulfides by adding 1,2-cyclohexanediamine-N,N,N′,N ′-tetraacetic acid (CyDTA) as a chelating agent for nickel in the preparation of NiWS–SiO2 catalysts is the key ingredient in obtaining a high activity for thiophene hydrodesulfurization.