Enhancing and upgrading bio-oil during catalytic pyrolysis of cellulose: The synergistic effect of potassium cation and different anions impregnation

Fu, Xichao; Wang, Xiao; Li, Yuying; Xin, Yongjie; Li, Shuang

doi:10.1016/j.fuproc.2019.05.022

Cited by 27 publications

(19 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with that produced by CL, the char produced by CL-PN/CL-NF showed a weakener absorption peak. A similar observation was also reported by the work of Fu et al that used KHCO 3 as the catalyst. The peak at 1690 cm –1 was well known to be the stretching vibration of the CO bond in the carbonyl compounds, and the strongest absorption intensity was found when HCOOK was added.…”

Section: Resultssupporting

confidence: 88%

“…The reason was considered to be related to the synergy of the metal ion and formic acid group. Fu et al 34 noted that K + could promote the breakage and side-chain scission of cellobiose to generation carbonyl compounds, and the existence of K + and CO 3 2− further enhanced the above reaction. Considering this work, HCOOK decomposed into potassium carbonate (K 2 CO 3 ), hydrogen (H 2 ), and other gas molecules at the experimental temperature (formula 4); thus, the presence of HCOOK promoted the disintegration of cellulose and enhanced the effect of lignin to promote the formation of carbonyl compounds.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Cellulose–Lignin Interactions on Catalytic Pyrolysis over Formate Salt Catalysts

Jiang

Liu

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

This work studied the effect of cellulose–lignin interactions under potassium formate (HCOOK) and nickel formate (Ni(HCOO)2) on behavior and product distributions. The results indicated that the presence of HCOOK affected the whole thermal decomposition process, while the effect of Ni(HCOO)2 was mainly manifested before 339 °C. The interaction under the action of HCOOK favored the generation of carbonyl compounds, and the catalytic pyrolysis with Ni(HCOO)2 was better for formating phenols. The high peak intensities of CO and CH4 were achieved by adding nickel formate and potassium formate, respectively. It was obviously different from noncatalytic pyrolysis. The evolution of a char structure further revealed that different formate salts had different effects on the interactions. The statistical method according to the distribution of the liquid component confirmed that HCOOK had the strongest effect for reducing the cellulose–lignin interactions.

show abstract

Section: Resultssupporting

confidence: 88%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Effect of Cellulose–Lignin Interactions on Catalytic Pyrolysis over Formate Salt Catalysts

Jiang

Liu

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…It is easy to react with cellulose, generate organic metal ions, and promote the pyrolysis of cellulose. Moreover, copper was shown to promote the pyrolytic degradation of cellulose into levoglucosenone and 1,4:3,6‐dianhydro‐α‐d‐glucopyranose (intermediate products), further degradation to produce oxygen‐containing compounds such as furan, aldehyde and acetic acid with the Lewis acid and Brønsted acid sites of metal . At last the order of chain arrangement can be destroyed, which promotes the transformation of cellulose.…”

Section: Resultsmentioning

confidence: 68%

Catalytic copyrolysis of metal impregnated biomass and plastic with Ni‐based HZSM‐5 catalyst: Synergistic effects, kinetics and product distribution

et al. 2020

View full text Add to dashboard Cite

The present work aims to investigate the thermal behavior, kinetics, thermodynamics, and product distribution during copyrolysis of transition metal salt (Ni, Co, Zn, Cu, and Fe)-added biomass and model compounds with low density polyethylene(LDPE) over a Ni-based HZSM-5 catalyst by TGA and fixed bed reactor. The interactions and reaction mechanisms during copyrolysis were evaluated. The influence of Ni-impregnated biomass (C-M) and Nimodified HZSM-5 (Ni/HZ) on the formation of pyrolysis bio-oil from biomass and model compounds and its subsequent effect on catalytic pyrolysis vapor upgrading was discussed. The results indicated that the presence of transition metal decreased the thermal degradation temperature and thermodynamics parameters; maximum decomposition rate, and reaction complexity. Ni/HZ catalyst could further decrease the activation energy, accelerate the reaction rate and change reaction process, and the modified samples/LDPE under copyrolysis with HZSM-5 catalyst presented a more significant effect than Ni/HZ catalyst. Subsequently, the Ea of pine, cellulose and lignin changed from 24.11, 18.29, and 28.68 kJ/mol (CP@Ni/HZ) to 56.04, 69.84, and 16.21 kJ/mol (CP-Ni@HZSM-5), respectively. In addition, Ni could inhibit the depolymerization of cellulose and promoted the formation of char, coke, and lignin derived phenolics. And Ni-impregnated biomass reduced the formation of desired aromatic hydrocarbons, but result in increasing of the char and non-condensable gases. But Ni/HZ catalysts promote the conversion of biomass to target products.

show abstract

“…The liquid product was collected in a cold trap placed in ethanol at −34 °C. The mass of liquid product and residue (char) were weighted, and the gas yield was confirmed by difference. , …”

Section: Methodsmentioning

confidence: 99%

“…The oven was initially heated from 60 to 90 °C for 1 min, then increased to 170 °C at a heating rate of 3 °C/min, then held for 1 min, and then further heated to 300 °C for 8 min. In order to avoid condensation of gas components, the MS injector temperature was set at 280 °C . The compounds separated from the chromatogram were identified by comparing with the standard spectra in NIST11 mass spectrometry database.…”

Section: Methodsmentioning

confidence: 99%

Fixed Bed Reactor Pyrolysis of Rape Straw: Effect of Dilute Acid Pickling on the Production of Bio-oil and Enhancement of Sugars

Xin

Wang

et al. 2020

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

To investigate the influence of dilute acid pickling on pyrolysis behavior and product distribution during rape straw (RS) pyrolysis, HCl, HF, and HCl + HF were selected. Proximate and ultimate analysis, ICP-AES, SEM, and BET were employed to examine the composition and the physicochemical properties of the biomass. It is found that the alkali and alkaline earth metals (AAEMs) in RS were obviously removed by acid pickling, especially HCl. Fixed bed pyrolysis data showed that liquid product increased from 37.48 wt % (RS) to 42.24 wt % (RS-HCl), 48.03 wt % (RS-HF), and 47.20 wt % (RS-HCl + HF). The relative content of main compounds in bio-oil were identified by GC/MS. Sugars increased from 1.43% (RS) to 25.27% (RS-HCl), 19.00% (RS-HF), and 19.78% (RS-HCl + HF). Particularly, D-allose, which has been widely used in the field of healthcare, increased dramatically. It is proposed that the removal of AAEMs promoted the depolymerization of cellulose or hemicellulose, resulting in increased sugars. Current results provide greater feasibility using bio-oil as raw material in biorefinery process.

show abstract

Enhancing and upgrading bio-oil during catalytic pyrolysis of cellulose: The synergistic effect of potassium cation and different anions impregnation

Cited by 27 publications

References 59 publications

Effect of Cellulose–Lignin Interactions on Catalytic Pyrolysis over Formate Salt Catalysts

Effect of Cellulose–Lignin Interactions on Catalytic Pyrolysis over Formate Salt Catalysts

Catalytic copyrolysis of metal impregnated biomass and plastic with Ni‐based HZSM‐5 catalyst: Synergistic effects, kinetics and product distribution

Fixed Bed Reactor Pyrolysis of Rape Straw: Effect of Dilute Acid Pickling on the Production of Bio-oil and Enhancement of Sugars

Contact Info

Product

Resources

About