Meng, Xiaoyu; Wang, Lei; Chen, Lifang; Xu, Ming; Liu, Ning; Zhang, Junbo; Yang, Yusen; Wei, Min published the artcile< Charge-separated metal-couple-site in NiZn alloy catalysts towards furfural hydrodeoxygenation reaction>, Reference of 97-99-4, the main research area is nickel zinc alloy catalyst furfural hydrodeoxygenation reaction.
Catalytic conversion of biomass furfural (FAL) to high value-added products (e.g., 2-methylfuran, MF) has attracted considerable attention, in which control over catalytic selectivity plays a crucial issue. Herein, a series of heterogonous NiZn alloy supported on the mixed metal oxides (MMO) were synthesized derived from layered double hydroxides (LDHs) with various Ni/Zn ratio (3/1, 1/1 or 1/3). XRD, HRTEM and XAFS measurements confirm that with the increase of Zn content, the corresponding NiZn alloy transforms from α-NiZn to β-NiZn. Dramatically, the selectivity of MF displays an improvement from 12% to 95% along with this phase transformation process; and the MF yield reaches to 95% over Ni1Zn3-MMO sample. A combination study including XPS, CO-DRIFTS, in situ FT-IR and DFT calculation verifies that metallic Ni serves as active site, resulting in an effective suppression of side reactions. Moreover, a charge-separated metal-couple-site (Niδ–Znδ+) is on the surface of Ni1Zn3-MMO originating from electron transfer between Ni and Zn. This active structure stabilizes a η2(C, O) adsorption configuration of intermediate, in which C atom is bonded to the Niδ- site and O atom is attached to the Znδ+ site. This work provides an efficient and cost-effective catalyst that can simultaneously inhibit C=C hydrogenation and promote C-O cleavage, which would be potentially used in catalytic conversion of biomass-derived platform mols.
Journal of Catalysis published new progress about Adsorption energy. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Reference of 97-99-4.
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem