Ni₂P promotes the hydrogenation activity of naphthalene on wrinkled silica nanoparticles with tunable hierarchical pore sizes in a large range

Abstract

Herein, a series of wrinkled silica nanoparticles with hierarchical pores (HPWSNs) were successfully prepared by dual-templating, of which the Ni2P/HPWSNs-0.13 catalyst with the smallest Ni2P particles exhibited the highest naphthalene hydrogenation activity.

Selective Hydrogenation of Naphthalene to Decalin Over Surface‐Engineered α‐MoC Based on Synergy between Pd Doping and Mo Vacancy Generation

“…The predicted adsorption configurations were flat, in line with the above speculations and previously reported results. [8] The negative values of E ads indicated that the adsorption of NAP and tetralin was spontaneous and exothermic (Table S5, Supporting Information), in line with other reports on non-oxide compounds. [8] The energy of NAP adsorption on the pure α-MoC (i.e., α-MoC-1 and α-MoC-2) surface ranged from −170 to −196 kJ mol −1 .…”

“…[8] The negative values of E ads indicated that the adsorption of NAP and tetralin was spontaneous and exothermic (Table S5, Supporting Information), in line with other reports on non-oxide compounds. [8] The energy of NAP adsorption on the pure α-MoC (i.e., α-MoC-1 and α-MoC-2) surface ranged from −170 to −196 kJ mol −1 . The energy of NAP adsorption on Mo vacancy sites (Mo(v)-A, −220 kJ mol −1 ) was much higher (in absolute terms) than that on the α-MoC surface, which indicated stronger adsorption in the former case (peak 3).…”

“…Recently, non-oxide supports (e.g., metal phosphides, silicides, sulfides, and carbides) with unique surface electronic structures have attracted much attention because of their high catalytic performance. [8,[31][32][33][34][35] Among them, molybdenum carbide exhibits noble metal (e.g., Pd and Pt)-like catalytic behavior in various reactions and holds great promise for the partial replacement of noble metal-based catalysts or even as their ultimate alternative, [36][37][38][39][40][41][42][43][44] for example, β-Mo 2 C is well suited for NAP hydrogenation. However, pure β-Mo 2 C is much less intrinsically active than noble metal catalysts and mainly affords tetralin.…”

“…[7] Naphthalene (NAP) is commonly used as a model to study the mechanisms of the catalytic hydrogenation saturation of polycyclic aromatic hydrocarbons and the performance of the related catalysts. [8] The hydrogenation of NAP is a reversible parallel-consecutive reaction mainly affording tetralin and decalin (cis-and trans-isomers). [9] Notably, the latter product is much more difficult to obtain than the former because of the reversibility of the consecutive reaction and the difficulty of dearomatizing the stable aromatic ring in tetralin.…”

Influence of Reduction Temperature on the Structure and Naphthalene Hydrogenation Saturation Performance of Ni2P/Al2O3 Catalysts

“…In recent years, Ni 2 P catalysts have shown high intrinsic hydrogenation activity in hydrodesulfurization [9,10] and hydrodenitrogenation reactions [11,12] due to their special crystal morphology and physicochemical properties, and they are expected to be the new generation of highly efficient aromatic hydrosaturation catalysts [13,14]. Unlike metal carbides and nitrides, the radius of P atoms (0.109 nm) is much larger than that of C atoms (0.071 nm) and N atoms (0.065 nm).…”