Jet-Fuel Range Hydrocarbons from Biomass-Derived Sorbitol over Ni-HZSM-5/SBA-15 Catalyst

Abstract

Aromatics and cyclic-hydrocarbons are the significant components of jet fuel with high energy-density. However, conventional technologies for bio-fuel production cannot produce these products without further aromatization and isomerization. In this work, renewable liquid fuel with high content of aromatics and cyclic-hydrocarbons was obtained through aqueous catalytic conversion of biomass sorbitol over Ni-HZSM-5/SBA-15 catalyst. Texture characteristics of the catalyst were determined by physisorption of N2, which indicated its bimodal pore structures were microporous (HZSM-5, pore width: 0.56 nm) and mesoporous (SBA-15, pore width: 8 nm). The surface acidity included weak and strong acid sites, predominantly Lewis type, and was further confirmed by the NH3-TPD and Py-IR analysis. The catalytic performances were tested in a fixed-bed reactor under the conditions of 593 K, WHSV of 0.75 h

Converting Alkali Lignin to Biofuels over NiO/HZSM‐5 Catalysts Using a Two‐Stage Reactor

“…These were attributed to weak acid sites (Brønsted acid) and strong acid sites (Lewis acid), respectively . Compared to HZSM‐5, the loading of the NiO increased the strong acid sites on the NiO/HZSM‐5 catalysts . Similar results were found by Zhao et al.…”

“…Then, Ni(OH) 2 or unreacted Ni(NH 3 ) 6 2+ was decomposed to NiO at the temperatures ranging from 248 to 361 °C in the temperature escalation program of the NH 3 ‐TPD test . This might not have significant effects on the number of Lewis acid sites (220–500 °C) due to the conversion of Ni(OH) 2 or Ni(NH 3 ) 6 2+ to NiO occurring in NH 3 ‐TPD analysis, since the results of the strengthened Lewis acid sites due to the doping of NiO were similar to the research results of Zhao et al , Iliopoulou et al , and Weng et al .…”

“…However, treatment with 7.64 % NiO/HZSM‐5 and 15.27 % NiO/HZSM‐5 generated biofuels with lower hydrocarbon contents in comparison to treatment with 1.27 % NiO/HZSM‐5. When more NiO was loaded onto HZSM‐5, the Ni reduced from NiO may preferentially replace the Brønsted acid sites . Therefore, it greatly decreased the Brønsted acid sites in 7.64 % NiO/HZSM‐5 and 15.27 % NiO/HZSM‐5, which might lead to the lower formation of hydrocarbons .…”

Catalytic Conversion of Biomass

“…Pizzi et al provided a nice approach towards high throughput screening of a range of heterogeneous catalysts for the conversion of furfural to bio-based fuel components [4] in a similar way to the approach proposed by Iglesias et al for the conversion of furfural to furfuryl alcohol via Meerwein-Ponndorf-Verley reduction using Zr-SBA-15 [5], while valuable jet-fuel range hydrocarbons could also be produced from biomass-derived sorbitol using Ni-HZSM-5/SBA-15 catalysts [6]. Such biomass-engineered products have a significant potential to replace current petroleum-derived analogues with improved biocompatibility and a reduced environmental footprint.…”

The Performance of Electron-Mediator Modified Activated Carbon as Anode for Direct Glucose Alkaline Fuel Cell

“…In recent years, with the rapid development of global industrialization, environmental problems caused by fossil fuel combustion are becoming more and more serious [1][2][3][4][5]. As possible alternatives of fossil fuel, biomass resources-one of the renewable energy sources-has attracted much attention [6][7][8][9][10].…”