Air-stable and reusable nickel phosphide nanoparticle catalyst for the highly selective hydrogenation of d-glucose to d-sorbitol

Abstract

An efficient and sustainable d-sorbitol production viad-glucose hydrogenation was achieved over a hydrotalcite-supported nickel phosphide nanoparticle catalyst with stability, high activity and reusability.

Efficient D‐Xylose Hydrogenation to D‐Xylitol over a Hydrotalcite‐Supported Nickel Phosphide Nanoparticle Catalyst

“…The latter peak is ascribed to the PO 4 3À species arising from the superficial oxidation of nano-Ni 2 P. The Ni Kedge X-ray absorption near edge structure (XANES) spectrum of nano-Ni 2 P/HT is shown in Figure S1, along with those of Ni foil and NiO as references. [38,39] The absorption edge energy of nano-Ni 2 P/HT was found to be close to that of Ni foil, thereby suggesting that the Ni species in nano-Ni 2 P/HT are present in a metal-like state, which is consistent with the XPS analysis.…”

“…The high catalytic performance of nano-Ni 2 P/HT may be due to the cooperative catalysis by nano-Ni 2 P and HT, which activate H 2 and the C=O moiety of D-xylose, respectively. [35,38,39] Subsequently, the catalytic activity of nano-Ni 2 P/HT in the hydrogenation of D-xylose was compared with those of conventional Ni catalysts. Ni/HT and its H 2 -treated Ni/HT-Red were investigated as model catalysts for NiO x and Ni(0) nanoparticles, respectively (Table 1, entries 12 and 13).…”

“…[31][32][33][34][35][36][37] In particular, hydrotalcite (HT: Mg 6 Al 2 CO 3 (OH) 16 • 4(H 2 O))-supported nickel phosphide nanoparticles (nano-Ni 2 P/HT) served as a highly active, air-stable, and reusable catalyst for the hydrogenation of D-glucose and maltose to the corresponding sugar alcohols. [38,39] In this context, the combination of nano-Ni 2 P and HT played a key role in the high catalytic performance, where nano-Ni 2 P activates H 2 , while HT acts as an electron donor to Ni and as an activator of the sugar C=O moiety, thereby facilitating the hydrogenation reaction. Focusing on the cooperative catalysis of nano-Ni 2 P/HT, we envisaged that the nano-Ni 2 P/HT catalyst would be applicable for the hydrogenation of D-xylose to D-xylitol.…”

Cation‐Vacancy‐Enriched Nickel Phosphide for Efficient Electrosynthesis of Hydrogen Peroxides

“…So, the Ni 2 P phase can be determined by calculating the Ni–Ni coordination number (CN, ≈6.1 × ≈35% = ≈2.1). These results suggest that the CN Ni‐Ni /CN Ni‐P ratio of Ni 2 P in Ni 2− x P‐V Ni is ≈1.9, lower than that of 3.3 for the perfect crystal Ni 2 P, [ 16 ] implies that the abundant V Ni are generated during the phosphidation treatments. Also, the absorption edge energy of Ni 2− x P‐V Ni in Ni K‐edge XANES spectra is close to Ni foil (Figure 2d), indicating Ni species in Ni 2− x P‐V Ni retain the metal‐like state.…”

“…Also, the absorption edge energy of Ni 2−x P-V Ni in Ni K-edge XANES spectra is close to Ni foil (Figure 2d), indicating Ni species in Ni 2−x P-V Ni retain the metal-like state. [16] The Ni L 2,3 -edge XANES spectra (Figure 2e; Table S2 in Supporting Information), derived from the transition from Ni 2p electron to unoccupied 3d states, show two strong absorption features. The peak between 852-857 eV corresponds to the L 3 -edge (2p 3/2 → 3d), and that between 869-872 eV corresponds to the L 2 -edge (2p 1/2 →3d).…”