Selective production of aromatic hydrocarbons from lignocellulosic biomass via catalytic fast-hydropyrolysis using W2C/γ-Al2O3

Venkatesan, Kavimonica; He, Shan; Seshan, K.; Selvam, Parasuraman; Vinu, R.

doi:10.1016/j.catcom.2018.03.011

Cited by 34 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Venkatesan et al observed high alkane yield at a H 2 partial pressure of 20 bar and a catalyst bed temperature of 350 °C, indicating that a relatively low temperature is more suitable for second-stage hydrotreatment, as it is an exothermic reaction. Venkatesan et al tested γ-Al 2 O 3 for two-stage noncatalytic hydropyrolysis with second stage upgrading of pine-wood, and it showed good selectivity to alkanes.…”

Section: Introductionmentioning

confidence: 99%

One-Step Hydropyrolysis and Hydrotreating Tandem Reactions of Miscanthus × giganteus Using Ni Impregnated ZSM-5/MCM-41 Composites

et al. 2021

View full text Add to dashboard Cite

In this study, we propose that the multistep, tandem catalytic fast hydropyrolysis (CFHP) and hydrotreatment reactions of biomass to produce gasoline and diesel grade biofuels can be conducted in a single step process using a composite of Ni-ZSM-5 microcrystals encapsulated in spherical particles of Ni-MCM-41 (Ni-ZSM-5/Ni-MCM-41). The composite has been successfully prepared via a one-step aerosol method and characterized by N2 adsorption–desorption, X-ray diffraction, scanning electron microscope (SEM), transmission electron microscope (TEM), pyridine adsorption, inductively coupled plasma-optical emission spectrometry (ICP-OES), and H2 chemisorption. The composite has been tested for one-stage CFHP and hydrotreatment of Miscanthus × giganteus at 600 and 500 °C. The product yields and distribution derived from the one-stage CFHP and hydrotreatment of Miscanthus × giganteus using the Ni-ZSM-5/Ni-MCM-41 composite were compared to those of a typical two-stage process, with Ni-ZSM-5 in the first stage (CFHP) and Ni-MCM-41 in the second stage (hydrotreatment). Additional experiments were carried out using Ni-ZSM-5, Ni-ZSM-5/MCM-41, and ZSM-5/Ni-MCM-41 composites, as well as physical mixtures of Ni-ZSM-5 and Ni-MCM-41 to obtain further insights into the role of each part of the composites to the product yields and distribution derived from the one-stage CFHP and hydrotreatment reaction. The comparison of results showed that the Ni-ZSM-5/Ni-MCM-41 composite enhanced the production of alkanes and methane without sacrificing the yield to monoaromatic hydrocarbons. Therefore, this study proves that such a unique composite can complete the two-step tandem reactions in one single step, leading to a self-sustainable and intensified process.

show abstract

Section: Introductionmentioning

confidence: 99%

One-Step Hydropyrolysis and Hydrotreating Tandem Reactions of Miscanthus × giganteus Using Ni Impregnated ZSM-5/MCM-41 Composites

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Char yields are also increased upon impregnation of K. 26 Potassium also reduced torrefaction time by over 28%. 27 Tungsten carbide (W 2 C/alumina) 28 and molybdenum carbide (Mo 2 C)/support 29 have been impregnated on biomass as effective hydrodeoxygenation agents of biomass-derived small oxygenates, phenolics, and furan derivatives. This method has been used for the selective production of aromatic hydrocarbons from lignocellulosic biomass via catalytic fast hydropyrolysis by removing sulfur, nitrogen, oxygen, and metals.…”

Section: Introductionmentioning

confidence: 99%