Screening heterogeneous catalysts for the pyrolysis of lignin

Jackson, Michael A.; Compton, David L.; Boateng, Akwasi A.

doi:10.1016/j.jaap.2008.09.016

Cited by 172 publications

(113 citation statements)

References 28 publications

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“…For all the investigated three biomass components, hydrogen production was dramatically increased from around 7 to more than 15 (mmol g -1 sample), when a catalyst was introduced to the experiment. Hydrogen production was also reported to be increased when ZSM-5 and MCM-41 based catalysts were mixed with lignin for pyrolysis at 600 °C [31]. The production of hydrogen was also reported to be increased with the addition of a Ni-based catalyst to biomass pyrolysis/gasification [32][33][34].…”

Section: Hydrogen Production From Pyrolysis/gasification Of Biomass Cmentioning

confidence: 94%

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

Wang

Huang

2013

Fuel

165

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Cellulose, hemicellulose and lignin are the main components of biomass. This work presents research into the pyrolysis/gasification of all three main components of biomass, in order to evaluate and compare their hydrogen production and also understand their gasification processes. A fixed bed, two-stage reaction system has been used employing various nickel-based catalysts. Gas concentration (CO, H 2 , CO, CO 2 and CH 4 ) was analysed for the produced non-condensed gases. Oil byproducts were analysed by gas chromatography/mass spectrometry (GC/MS). Various techniques such as X-Ray Diffraction (XRD), scanning electron microscopy (SEM) coupled to an energy dispersive X-ray spectroscopy (EDXS), temperature-programmed oxidation (TPO) were applied to characterize the fresh or reacted catalysts. The experimental results show that the lignin sample generates the highest residue fraction (52.0 wt.%) among the three biomass components. When Ni-Zn-Al (1:1) catalyst was used in the gasification process, gas yield was increased from 62.4 to 68.2 wt.% for cellulose, and from 25.2 to 50.0 wt.% for the pyrolysis/gasification of lignin. Hydrogen production was increased from 7.0 to 18.7 (mmol g -1 sample) when the Ni-Zn-Al (1:1) catalyst was introduced in the pyrolysis/gasification of cellulose. Among the investigated catalysts, Ni-Ca-Al (1:1) was found to be the most effective for hydrogen production from cellulose pyrolysis/gasification.

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Section: Hydrogen Production From Pyrolysis/gasification Of Biomass Cmentioning

confidence: 94%

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

Wang

Huang

2013

Fuel

165

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“…Since lignin is the most thermally stable of the lignocellulosic biomass components, reaction temperatures typically exceed those of 500-550°C required for cellulose and hemicellulose [45]. The major products of lignin pyrolysis are phenolic compounds, such as phenol, guaiacol, and syringol [46][47][48].…”

Section: Pyrolysismentioning

confidence: 99%

Heterogeneously catalyzed lignin depolymerization

Pineda

Lee

2016

Appl Petrochem Res

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Biomass offers a unique resource for the sustainable production of bio-derived chemical and fuels as drop-in replacements for the current fossil fuel products. Lignin represents a major component of lignocellulosic biomass, but is particularly recalcitrant for valorization by existing chemical technologies due to its complex crosslinking polymeric network. Here, we highlight a range of catalytic approaches to lignin depolymerisation for the production of aromatic bio-oil and monomeric oxygenates.

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“…Деполимеризацию лигнина в сверхкритических органических растворителях, как пра-вило, проводят в интервале температур 200-350 °С и при повышенных давлениях. Также для деполимеризации лигнинов в сверхкритических органических растворителях могут быть до-полнительно использованы газообразный водород или водородно-донорные растворители, та-кие как муравьиная кислота [104,105], Использование катализаторов позволяет интенсифицировать деструкцию лигнина и уве-личить выход жидких продуктов [106][107][108][109][110][111].…”

Section: применение органосольвентных лигниновunclassified

“…Показано, что кислотные цеолитные катализаторы, такие как HZSM-5, не только увели-чивают конверсию лигнина в жидкие продукты в процессе его пиролиза [111], но и способ-ствуют образованию ароматических углеводородов путем деоксигенации метоксифенольных соединений [107]. Исследовано влияние силикатного модуля (Si/Al), кислотности, пористости цеолитов и их количества на выход и состав продуктов каталитического пиролиза лигнина [108].…”

Section: применение органосольвентных лигниновunclassified