Modeling of the catalytic effects of potassium and calcium on spruce wood gasification in CO2

Kramb, Jason; DeMartini, Nikolai; Perander, Michael; Moilanen, Antero; Konttinen, Jukka

doi:10.1016/j.fuproc.2016.01.031

Cited by 46 publications

(34 citation statements)

References 33 publications

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“…Most studies related to the impact of inorganics in the gasification behavior of biomasses use impregnation techniques to modify the composition of the samples [8,[12][13][14][15]. In general, these treatments allow a good understanding of the effects of inorganics on gasification.…”

Section: Introductionmentioning

confidence: 99%

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

Millán

Vargas

Nzihou

2019

Fuel

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The steam gasification and co-gasification reactivity and kinetics of coconut shells, oil palm shells and bamboo guadua were studied from an isothermal thermogravimetric analysis, with temperatures ranging from 750°C to 900°C, and steam partial pressures from 3 to 10 kPa. In the analyzed experimental range, inorganics were identified as the most influential parameter in biomass reactivity and kinetics. Accordingly, a new modeling approach is proposed to predict the gasification behavior of lignocellulosic agrowaste based on their inorganic composition. A good agreement between the experimental and modeled data was found, showing that the proposed approach is suitable for the description and prediction of the gasification behavior of biomasses with different macromolecular structure and within a wide range of inorganic composition, and H/C and O/C ratios near 1.5 and 0.8 respectively. This kinetic model could constitute a valuable tool for reactor design and scale-up of steam gasification facilities using tropical lignocellulosic feedstocks.

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Section: Introductionmentioning

confidence: 99%

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

Millán

Vargas

Nzihou

2019

Fuel

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“…Raman analysis was conducted at room temperature by a Thermo Fisher spectrometer equipped with a DXR detector. The spectra were collected in the range of 500-3500 cm 21 . Raman analysis was performed by the method of baseline drift correction and Gaussian peak-differentiating fitting.…”

Section: Characterization Methodsmentioning

confidence: 99%

“…For each experiment, 150 mg of coal sample was loaded in the central zone of the tubular reactor sandwiched by quartz wool and quartz sand in order to maintain homogeneous temperature. Pressure of the reactor was adjusted to 0.25 MPa by reactant gas (Arþ9%CO 2 ) at a flow rate of 110 ml min 21 . The reactor was heated up from room temperature to 6008C at the heating rate of 158C min 21 , and up to 10008C at 28C min 21 .…”

Section: Co 2 Gasificationmentioning

confidence: 99%

“…Pressure of the reactor was adjusted to 0.25 MPa by reactant gas (Arþ9%CO 2 ) at a flow rate of 110 ml min 21 . The reactor was heated up from room temperature to 6008C at the heating rate of 158C min 21 , and up to 10008C at 28C min 21 .…”

Section: Co 2 Gasificationmentioning

confidence: 99%

“…The catalytic effects of potassium and calcium on coal gasification were studied extensively. However, the results about the catalytic effects of potassium and calcium obtained by different researchers were still inconsistent because of the variation in composition and properties of different coals [ 21 ]. To the best of our knowledge, most researchers reported that the catalytic effects of potassium on the CO 2 gasification of coal or char are much more remarkable than those of calcium [ 22 – 26 ].…”

Section: Introductionmentioning

confidence: 99%

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The catalytic effect of calcium and potassium on CO ₂ gasification of Shengli lignite: the role of carboxyl

Ban¹,

Wang²,

Li³

et al. 2018

R. Soc. open sci.

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The CO2 gasification of Chinese Shengli lignite (SL) catalysed by K+ and Ca2+ was studied. The results showed that calcium could greatly decrease the gasification reaction temperature of SL, and the gasification reaction rates of acid-treated SL catalysed by calcium were significantly higher than that catalysed by potassium. Kinetic analysis showed that the activation energy of the reaction catalysed by calcium was much lower than that catalysed by potassium, which was the reason for the higher catalytic activity of calcium. Fourier transform infrared characterization showed that, compared with acid-treated SL, the addition of K+/Ca2+ resulted in the significant weakening of C=O bond, and new peaks attributed to carboxylate species appeared. X-ray photoelectron spectroscopy results indicated that the numbers of C=O decreased after the metal ions were added, indicating the formation of metal–carboxylate complexes. Raman characterization showed that the ID1/IG values increased, suggesting more structural defects, which indicated that the reactivity of coal samples had a close relation with amorphous carbon structures. Ca2+ could interact with the carboxyl structure in lignite by both ionic forces and polycarboxylic coordination, while K+ interacted with carboxyl structure mainly via ionic forces.

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Carbonaceous Catalysts from Biomass

Hazlett

Arnold

Montes

et al. 2019

Production of Materials From Sustainable Biomass Resources

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Modeling of the catalytic effects of potassium and calcium on spruce wood gasification in CO2

Cited by 46 publications

References 33 publications

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

The catalytic effect of calcium and potassium on CO ₂ gasification of Shengli lignite: the role of carboxyl

Carbonaceous Catalysts from Biomass

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Modeling of the catalytic effects of potassium and calcium on spruce wood gasification in CO2

Cited by 46 publications

References 33 publications

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

Steam gasification behavior of tropical agrowaste: A new modeling approach based on the inorganic composition

The catalytic effect of calcium and potassium on CO 2 gasification of Shengli lignite: the role of carboxyl

Carbonaceous Catalysts from Biomass

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Product

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The catalytic effect of calcium and potassium on CO ₂ gasification of Shengli lignite: the role of carboxyl