Oligomerization of Biomass-Derived Light Olefins to Liquid Fuel: Effect of Alkali Treatment on the HZSM-5 Catalyst

Wang, Xiaoxing; Hu, Xiaoyan; Song, Chunshan; Lux, Kenneth W.; Namazian, M.; Imam, Tahmina

doi:10.1021/acs.iecr.7b02316

Cited by 26 publications

(14 citation statements)

References 48 publications

(87 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HZSM-5 framework remains unaffected after alkali treatment (NaOH), with a favorable improvement in the pore size and acidity at low NaOH concentrations (o0.5 M). 116 On the other hand, the zeolite structure can be degraded with a significant reduction of micropore size and acidity concentration at higher NaOH concentrations. Results obtained from gas phase oligomerization of biomass-derived ethylene revealed that the proper NaOH treatment not only favors ethylene conversion and product yield, but also improves catalyst stability.…”

Section: Upgrading Of Glycerol and Its Derivativesmentioning

confidence: 99%

Advances in porous and nanoscale catalysts for viable biomass conversion

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Upgrading Of Glycerol and Its Derivativesmentioning

confidence: 99%

Advances in porous and nanoscale catalysts for viable biomass conversion

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Based on the supplementary information ( Figure S2), acidity is important for the oligomerization reaction [32]. However, the catalytic reactivity of all catalysts does not have a close relationship with the Brönsted acid sites.…”

Section: Catalytic Performancementioning

confidence: 99%

Improvement of the Catalytic Efficiency of Butene Oligomerization Using Alkali Metal Hydroxide-Modified Hierarchical ZSM-5 Catalysts

Zhang

et al. 2018

Catalysts

View full text Add to dashboard Cite

Oligomerization of light olefin is an effective method to produce plentiful liquid fuels. However, oligomerization processes using microporous zeolites have severe problems due to steric hindrance. In this paper, oligomerization of butene using a series of new types of hierarchical HZSM-5 zeolite catalysts is studied. To obtain the modified HZSM-5 catalysts, HZSM-5 is treated with the same concentration of LiOH, NaOH, KOH, and CsOH aqueous solutions, respectively. It is demonstrated that the alkali treatment can effectively modify the acidity properties and hierarchical structure of the HZSM-5 catalyst, which is confirmed by X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Nitrogen Adsorption-desorption Measurements, Transmission Electron Microscopy Investigations (TEM), Ammonia Temperature-programmed Desorption Method (NH 3 -TPD), Pyridine FT-IR, and Thermogravimetric Analysis (TGA). The results show that hierarchical catalysts with interconnected open-mesopores, smaller crystal size, and suitable acidity can better prolong the catalyst lifetime during butene oligomerization. Particularly, the HZSM-5 catalysts treated with CsOH aqueous solution (ATHZ5-Cs) proved to be the most effective catalyst, resulting in approximately 99% conversion of butene and exhibiting C 8 + selectivity of 85% within 12 h. Thus, an appropriate hierarchical catalyst can satisfy the oligomerization process and has the potential to be used as a substitute for the commercial ZSM-5 catalyst.

show abstract

“…This could lead to a reduction of moisture and oxygen content. After torrefaction, the content of water and volatiles in biomass decreases, and the content of fixed carbon increases (Wang et al 2017). The content of H and O in camphorwood decreases, while the content of C increases with increased torrefaction temperature (Zheng et al 2018).…”

Section: Torrefaction Of Camphorwoodmentioning

confidence: 99%

Effects of torrefaction pretreatment and Mg-Al modified HZSM-5 catalysts on components distribution in bio-oils from camphorwood pyrolysis

Liu

et al. 2021

BioRes

View full text Add to dashboard Cite

Torrefaction pretreatment conducted at a low temperature is an important technique for refining the bio-oil and improving the production of some chemicals in the bio-oil (e.g. aromatic hydrocarbons). In this work, the effects of torrefaction temperature and catalysts on the yields of pyrolysis products and components distribution in the bio-oils were analyzed. The weak acid sites shifted to higher temperature as the HZSM-5 was modified by Mg2+ or Al3+. The catalytic pyrolysis from camphorwood was done at pyrolysis of 450 °C and torrefaction temperature of 200 °C. The catalysts remarkably influenced the yields of bio-oil and components distribution. The catalysts increased the production of phenols. The content of phenols in the resulting bio-oil exhibited the following trend: HZSM-5 < MgO-modified HZSM-5 < Al2O3-modified HZSM-5. In addition, the content of 2,6-dimethoxyphenol was the highest among all phenol components (5.58%). The production of aldehydes was remarkably improved by the Al2O3-modified HZSM-5, resulting in a maximum content of 8.21%. Thus the torrefaction temperature and catalysts would refine the bio-oil (such as the acid value decreased) and significantly improve the contents of components (such as D-allose, 2,6-dimethoxy-4-(2-propeny)-phenol, 1,2,4-trimethoxybenzene, and 2,6-dimethoxyphenol). The results provide a theoretical basis for the resource recovery of biomass.

show abstract

Oligomerization of Biomass-Derived Light Olefins to Liquid Fuel: Effect of Alkali Treatment on the HZSM-5 Catalyst

Cited by 26 publications

References 48 publications

Advances in porous and nanoscale catalysts for viable biomass conversion

Advances in porous and nanoscale catalysts for viable biomass conversion

Improvement of the Catalytic Efficiency of Butene Oligomerization Using Alkali Metal Hydroxide-Modified Hierarchical ZSM-5 Catalysts

Effects of torrefaction pretreatment and Mg-Al modified HZSM-5 catalysts on components distribution in bio-oils from camphorwood pyrolysis

Contact Info

Product

Resources

About