Hydrotreating catalysts are active once in a sulfided form while either fresh or regenerated catalysts are delivered to the end users under the oxidic form. Initially the sulfiding step was performed once the catalysts had been loaded into the reactor and various sulfiding agents were used : feedstock, H₂S, spiking agents such as DMDS.
In the 80's EURECAT introduced the first off-site technology, SULFICAT, and later developed a full sulfiding process, TOTSUCAT.

>> Download the MSDS of presulfided CoMo / NiMo catalyst

THE ADVANTAGES OF OFF-SITE SULFIDING TECHNIQUES

	Economical choice
	• Downtime saving • No special training for operators • No specialized injection equipment
	Reduction of risks
	• Metal reduction impossible • No handling of sulfiding agent
	Improved catalysts characteristics
	• Easy handling • Minimized hazards • A Homogeneity • High activity • No offensive smell

>> Download the MSDS of presulfided or fully sulfided catalysts