Efficient Hydrogenolysis of Guaiacol over Highly Dispersed Ni/MCM-41 Catalyst Combined with HZSM-5

Abstract

Abstract:A series of MCM-41 supported Ni catalysts with high metal dispersion was successfully synthesized by simple co-impregnation using proper ethylene glycol (EG). The acquired Ni-based catalysts performed the outstanding hydrogenolysis activity of guaiacol. The effects of the synthesis parameters including drying temperature, calcination temperature, and metal loading on the physical properties of NiO nanoparticles were investigated through the use of X-ray diffraction (XRD). The drying temperature was found to significantly influence the particle sizes of NiO supported on MCM-41, but the calcination temperature and metal loading had less influence. Interestingly, the small particle size (≤3.3 nm) and the high dispersion of NiO particles were also obtained for co-impregnation on the mixed support (MCM-41:HZSM-5 = 1:1), similar to that on the single MCM-41 support, leading to excellent hydrogenation activity at low temperature. The guaiacol conversion could reach 97.9% at 150 • C, and the catalytic activity was comparative with that of noble metal catalysts. The hydrodeoxygenation (HDO) performance was also promoted by the introduction of acidic HZSM-5 zeolite and an 84.1% yield of cyclohexane at 240 • C was achieved. These findings demonstrate potential applications for the future in promoting and improving industrial catalyst performance.

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

“…Another B.E. peak at 855.5 eV belonged to Ni 2+ [51], with the satellite peak at the higher B.E. value.…”

Preparation of cis-pinane via α-pinene hydrogenation in water by using Ru nanoparticles immobilized in functionalized amphiphilic mesoporous silica

“…Qiu et al reported that Ni nanoparticles supported on MCM-41 were used to catalyze the hydrogenation of guaiacol at 150 C and the conversion was 97.9%. 22 Cobalt carbonyl cluster anchored on functionalized SBA-15 showed promising catalytic activity on hydroformylation of 1-octene (97.0% conversion) with excellent selectivity towards hydroformylated product (90.0%). 23 However, these mesoporous materials could not disperse into the organic-aqueous biphase system due to their inherent hydrophilicity in the process of hydrogenation, which made the reaction conditions very harsh.…”

The Role of Active Sites Location in Partial Oxidation of Methane to Syngas for MCM-41 Supported Ni Nanoparticles

“…The NiO particles located inside and outside the pore of MCM-41 were used in the pyrolysis catalytic gasification of wood sawdust. The high dispersion of the fine NiO particles inside the pores of the MCM-41 support promoted the catalytic performance [18]. Haller reported that nickel was incorporated by isomorphous substitution of silicon in the MCM-41 silica framework.…”