In-depth exploration of mechanism and energy balance characteristics of an advanced continuous microwave pyrolysis coupled with carbon dioxide reforming technology to generate high-quality syngas

Luo, Juan; Ma, Rui; Sun, Jiaman; Gong, Guojin; Sun, Shichang; Li, Haowen

doi:10.1016/j.biortech.2021.125863

Cited by 12 publications

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“…The high temperature enhanced the cracking degree of the biomass and promoted the interactions between the solid and the gas (C + CO 2 → CO), releasing more CO and H 2 . Moreover, the increase in pyrolysis temperature was conducive to the decomposition of methoxyl groups in lignin to produce more CH 4 , which further reduced the content of CO 2 . CO, H 2 , and CH 4 were combustible components in the biogas, and thus, the LHV of the biogas increased from 6.94 to 14.87 MJ/m 3 as the temperature was increased.…”

Section: Resultsmentioning

confidence: 99%

“…62 Moreover, the increase in pyrolysis temperature was conducive to the decomposition of methoxyl groups in lignin to produce more CH 4 , which further reduced the content of CO 2 . 63 CO, H 2 , and CH 4 were combustible components in the biogas, and thus, the LHV of the biogas increased from 6.94 to 14.87 MJ/m 3 as the temperature was increased. After catalytic pyrolysis of N-Fe/ BC, the catalyst had slightly different effects on the components of biogas at different pyrolysis temperatures, as shown in Figure 8a.…”

Section: Characteristics Of Biogas Andmentioning

confidence: 99%

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Microwave-Induced One-Pot Preparation of Bifunctional N-Fe/BC Catalysts and Oriented Production of Phenol-Enriched Bio-Oil from Biomass Pyrolysis: Catalyst Synthesis, Performance Evaluation, and Mechanism Insight via Theoretical Calculations

et al. 2022

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To recover valuable products from biomass, bifunctional catalysts (N-Fe/BC) capable of microwave absorption and oriented production of phenolics were prepared by a one-pot method involving the microwave-induced K2FeO4. Its catalytic performances were evaluated, and the catalytic mechanism was explored using a model compound and DFT calculations. The cycle performance and deactivation mechanism were investigated. N-Fe/BC possessed a large S BET value (265.21 m2 g–1), good pore distribution, and abundant Fe and N species, resulting in good dielectric and catalytic properties. After catalysis, the heating rates reached 63.78–107.84 °C min–1, and the selectivity and yield of phenol-enriched bio-oil improved significantly, reaching maximum values of 80.28% and 38.09 wt % at 550 °C with 20 wt % N-Fe/BC, respectively. Model compound experiments and DFT calculations showed that N-Fe/BC directionally generated phenolics by changing the reaction path and forming “hot spots” that stimulated the catalytic reforming of oxygen-containing compounds. The catalytic performance decreased slightly after five cycles, due to active site loss, carbon deposition, and pore collapse.

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Section: Resultsmentioning

confidence: 99%

Section: Characteristics Of Biogas Andmentioning

confidence: 99%