A strategy for preparing highly dispersed Ni2P/functionalized CMK-3 catalysts with superior hydrodesulfurization performance

• Published in: Catalysis communications Vol. 93; pp. 25 - 28
• Main Authors: Huang, Tingting, Shi, Wenjin, Xu, Jundong, Fan, Yu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2017
• Subjects: 4,6-Dimethyldibenzothiophene; Dispersion; Hydrodesulfurization catalyst; Ni2P; Hydrodesulfurization catalyst; 4,6-Dimethyldibenzothiophene; Ni2P; Dispersion
• ISSN: 1566-7367; 1873-3905
• DOI: 10.1016/j.catcom.2017.01.024

A strategy is introduced for producing highly dispersed Ni2P/functionalized CMK-3 hydrodesulfurization catalysts via the anchoring effect of high-temperature stable groups activated by ammonia. In the proposed method, HNO3 acts as an oxidant that enables original CMK-3 to create more lactones and phenolic hydroxyls than acidified ammonium persulphate; these groups are activated with negative charges via the NH3 effect, and thereby [Ni(NH3)6]2+ ions can be anchored to the electronegative surface of functionalized CMK-3 via electrostatic adsorption. As a result, NiO and phosphatized Ni2P nanoparticles are highly dispersed on the HNO3-oxidized CMK-3 support, endowing the catalyst with excellent activity for 4,6-dimethyldibenzothiophene hydrodesulfurization. [Display omitted] •HNO3 introduced more high-temperature stable groups on CMK-3.•Ammonia was used to activate these functional groups to be electronegative.•Highly dispersed Ni2P nanoparticles were produced on the functionalized CMK-3.•The corresponding catalyst had excellent activity for 4,6-DMDBT HDS.