Molten salt pyrolysis of biomass: The evaluation of molten salt

Zeng, Kuo; Yang, Xinyi; Xie, Yingpu; Yang, Haiping; Li, Jun; Zhong, Dian; Zuo, Hongyang; Nzihou, Ange; Zhu, Youjian; Chen, Hanping

doi:10.1016/j.fuel.2021.121103

Cited by 50 publications

(12 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adaptability of different molten salts for producing oil from biomass pyrolysis generally follows the order of carbonates, sulfates, and chlorides. 87 In addition, carbonates could significantly improve the pore properties of char at 850 °C with a large specific surface area (>800 m 2 g −1 ) and high microporosity (Fig. 6f ).…”

Section: Pyrolysismentioning

confidence: 95%

“…The characteristics and products of biomass pyrolysis are significantly affected by the types of molten salts. 87 The melting point and boiling point of molten salts are important parameters, as high stability is required for the downstream thermal process. As shown in Table 3, the decomposition temperatures of these alkali salts are generally higher than the pyrolysis temperature (Fig.…”

Section: Msmtc Of Biomass Into Chemicals and Fuelsmentioning

confidence: 99%

“…Alkali metal sulfates show excellent thermal stability, but an interaction between biochar and sulfates often occurs even at a low temperature (250 °C). 87 In general, the characteristics of thermal melting, thermal stability, and chemical stability of molten salts as well as the quality of pyrolytic products are important factors in determining the adaptability of different molten salts during biomass pyrolysis. Alkali metal carbonates are more suitable for practical applications in both biomass pyrolysis and biochar gasification under a CO 2 atmosphere to co-produce high-quality syngas and porous carbon materials.…”

Section: Msmtc Of Biomass Into Chemicals and Fuelsmentioning

confidence: 99%

See 2 more Smart Citations

Research advancement in molten salt-mediated thermochemical upcycling of biomass waste

Shen

Yuan

2023

Green Chem.

View full text Add to dashboard Cite

show abstract

Section: Pyrolysismentioning

confidence: 95%

Section: Msmtc Of Biomass Into Chemicals and Fuelsmentioning

confidence: 99%

Section: Msmtc Of Biomass Into Chemicals and Fuelsmentioning

confidence: 99%

See 1 more Smart Citation

Research advancement in molten salt-mediated thermochemical upcycling of biomass waste

Shen

Yuan

2023

Green Chem.

View full text Add to dashboard Cite

show abstract

“…Zeng et al. assessed the impact of biomass molten salt pyrolysis on molten salts, discovering that during high‐temperature direct pyrolysis of cotton stalks (CSs), char product yield was 29.1 wt% 87 . With the addition of KCl‐ZnCl 2 , char yield increased to 39.4 wt% (Figure 11A), possibly due to ZnCl 2 ’s strong dehydration capacity during pyrolysis, significantly lowering biomass components' carbonization temperature, altering CSs' decomposition pathway, and inhibiting tar formation while increasing char product yield.…”

Section: Biomass Pyrolysis To Fabricate Carbon Productsmentioning

confidence: 99%

Recent progress in melt pyrolysis: Fabrication and applications of high‐value carbon materials from abundant sources

Zhang,

Huang,

Yang

et al. 2023

SusMat

View full text Add to dashboard Cite

The escalating demand for sophisticated carbon products, including carbon black, carbon nanotubes (CNTs), and graphene, has yet to be adequately addressed by conventional techniques with respect to large‐scale, efficient, and controllable carbon material synthesis. Molten pyrolysis emerges as a propitious strategy for generating such high‐value carbon materials. Abundant carbon sources encompassing methane (CH4), carbon dioxide (CO2), biomass, and plastics can undergo thermal decomposition into carbon constituents within molten metal or salt media. This methodology not only obviates dependence on traditional fossil fuels but additionally enables modulation of carbon material morphologies by varying the molten media, thereby presenting substantial potential for effective and controlled carbon material fabrication. In this review, we examine the capacity of molten pyrolysis in producing high‐value carbon materials derived from CH4, CO2, biomass, and plastics. Concurrently, we present a detailed overview of the potential applications of this novel methodology, particularly emphasizing its relevance in the fields of supercapacitors, flexible materials, and electrochemical cells. Furthermore, we contemplate future trajectories for molten pyrolysis, accentuating that amalgamation with auxiliary processes or technologies—like renewable energy systems and carbon capture and storage—represents a remarkably promising route for continued investigation.

show abstract

“…In 2021, cotton stalk which is a typical agriculture waste with 9 kinds of alkali metal salts (LiCl, NaCl, KCl, Li 2 CO 3 , Na 2 CO 3 , K 2 CO 3 , Li 2 SO 4 , Na 2 SO 4 and K 2 SO 4, and ZnCl 2 were investigated using seven combined mixtures including 4 binary molten salts (LiCl‐KCl, KCl‐ZnCl 2 , Li 2 CO 3 ‐K 2 CO 3, and Li 2 SO 4 ‐K 2 SO 4 ) and 3 ternary molten salts (LiCl‐NaCl‐KCl, Li 2 CO 3 ‐Na 2 CO 3 ‐K 2 CO 3 and Li 2 SO 4 ‐ Na 2 SO 4 ‐K 2 SO 4 ) with a biomas to salt ratio of 1:5. [ 59 ] The carbonization process was carried out at 850 °C but with multiple transitions in heating zones. The alkali metal chlorides LiCl‐KCl and LiCl‐NaCl‐KCl had little effect on the distribution of pyrolysis products except for the slight increase of oil products and the slight decrease in gas products, indicating the chlorides didn't participate in the pyrolysis reaction.…”

Section: Molten Salt Carbonization and Activationmentioning

confidence: 99%