Highly active and stable MoS2-TiO2 nanocomposite catalyst for slurry-phase phenanthrene hydrogenation

نویسندگان

چکیده

MoS2-TiO2 nanocomposite catalysts with Janus structure were synthesized via facile one-step solvothermal method. X-ray diffraction, high resolution transmission electron microscope, NO chemisorption and photoelectron spectroscopy applied to characterize the composition nanostructure of catalysts. Experimental results revealed that composed MoS2 layers (few stacked 1–3 short slabs 2–10 nm) TiO2 nanoparticles (10–15 nm), which have strong interaction transferring electrons from MoS2. Catalytic performance for phenanthrene hydrogenation was investigated compared catalyst in an autoclave reactor temperature pressure. The conversion over content 15.0 wt% (MoS2-TiO2-15) can reach 91.6%, much higher than 50.4% 76.8% conventional supported MoS2/TiO2-15 catalyst. After 7 cycles reaction, MoS2-TiO2-15 nanocatalyst remained at 68.6%, while reduced only 25.4%. exhibit significantly enhanced catalytic activity stability slurry phase hydrogenation. originates exposure abundant coordinatively unsaturated Mo atoms. stable Mo–O–Ti bonds, anchor on surface avoid curling, folding agglomeration layers. This is important finding performances MoS2-based structure. Shedding light research crucial development effective

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ژورنال

عنوان ژورنال: Chinese Journal of Catalysis

سال: 2023

ISSN: ['0253-9837', '1872-2067']

DOI: https://doi.org/10.1016/s1872-2067(22)64184-6