Selective hydrogenation of furfural on Ni-P-B nanometals

How Catalysts and Experimental Conditions Determine the Selective Hydroconversion of Furfural and 5-Hydroxymethylfurfural

“…Besides, the presence of MoO 3 or Ce 2 O 3 in the catalyst brings acidic sites, which are favorable for the adsorption and polarization of the CO bond. , The incorporation of Al led to smaller particle sizes and to a higher fraction of exposed surface sites. Adding P also improves the selectivity to FOL due to the modification of the electron density on metallic nickel, similarly to B- and Fe-doping …”

“…Adding P also improves the selectivity to FOL due to the modification of the electron density on metallic nickel, similarly to B-and Fe-doping. 442 Dispersing NiB amorphous alloy on supports such as Al 2 O 3 and SiO 2 first allows one to improve the fraction of exposed atoms and, second, promotes mass transfer during reaction because the support provides an open porosity. Catalyst stability, and thus recycling, is positively affected.…”

“…Finally, amorphous Ni alloy catalysts have demonstrated interesting catalytic properties in the past decade. ,,− The NiB alloy is mostly used due to its excellent hydrogenation performances under mild reaction conditions (Table , entries 7–15). The strong interaction between B and Ni facilitates the activation of the CO bond in FFR and thus the selective formation of FOL. ,, Incorporating a third component such as Fe, Ce, Mo, Co, P, or Al increases the catalytic performances. ,,− The presence of oxophilic Fe as a dopant increases the catalyst specific surface area, the amount of unsaturated Ni active sites, and the distribution of the Ni active sites, and is beneficial for the adsorption of the CO bond of FFR. Moreover, electron donation from Fe to Ni can modify the environment of Ni, with benefits to the hydrogenation activity .…”

Recent advances in electroless nickel‑boron coatings

“…The catalytic properties of nickel have been known for decades [178], and the electroless plating process involves catalytic oxidation of the reducing agent, so it's rather natural that the catalytic properties of nickel-based coatings were investigated. Electroless-nickel boron does present interesting catalytic properties towards the hydrogenation/ dehydrogenation reactions indeed and has been used to favor the hydrogenation of various chemicals, such as soybean oil, sulfolene, and pchloronitrobenzene [163,[179][180][181][182][183][184][185][186][187][188][189]. They are usually used for this either as powders or coatings deposited on several types of substrates, with a suitable thickness for this use.…”

“…Usually, higher borohydride concentration in the plating bath (that leads to higher boron content) is also associated with higher plating rates and refining of the surface features [290,294]. Ternary Ni-B-P electroless coating presents catalytic properties [295,296], and weak paramagnetic behavior [291].…”