Applications of catalysts in thermochemical conversion of biomass (pyrolysis, hydrothermal liquefaction and gasification): A critical review

Wu, Yujian; Wang, Haoyu; Li, Haoyang; Han, Xue; Zhang, Mingyuan; Sun, Yan; Fan, Xudong; Ren, Ting X; Zeng, Yimin; Xu, Chunbao; Xu, Xinhua

doi:10.1016/j.renene.2022.07.031

Cited by 133 publications

(45 citation statements)

References 144 publications

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“…In addition to catalytic activity, catalyst recoverability and reusability are also important challenges for industrial application. 44 Cu−Ce and Ni−Co can be easily collected by phase separation technology after the reaction because they are heterogeneous catalysts. The traditional calcination method will change the activity of the Ni−Co catalyst.…”

Section: Reusability Of Catalystsmentioning

confidence: 99%

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production

Meng

et al. 2023

ACS Omega

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Hydrothermal liquefaction (HTL) is one of the most promising technologies for biofuel production. The preparation and application of catalysts for HTL have been the research focus in recent years. In this study, a new synergistic catalytic process strategy is proposed. CuO−CeO 2 /γ-Al 2 O 3 was used as an in situ hydrogen donor catalyst and Ni−Co/SAPO-34 was synthesized for hydroprocessing to improve bio-oil production process. The results of XRD and XPS demonstrated that the metal components were well supported on the catalyst. When the two catalysts were mixed, the yield of bio-oil increased from 51.00% to 64.51%, the carbon recovery rate raised from 69.53% to 88.18%, the energy recovery rate grew from 63.42% to 80.22%, and the S content is relatively reduced by 83.3%. Also, TG analysis showed that the content of light components in bio-oil increased. Moreover, the hydrocarbons and alcohols were observed to a higher proportion from the GC-MS analysis. This new method still has high catalytic activity after repeated use for five times. This study provides a new idea for preparing higher yield and superior quality bio-oil.

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Section: Reusability Of Catalystsmentioning

confidence: 99%

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production

Meng

et al. 2023

ACS Omega

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“…The pyrolysis gasification process could convert biomass into syngas (CO, CO 2 , H 2 , and CH 4 ) at high temperatures(700–1400 °C) [94–97] . Subsequently, the syngas can be further transformed into chemicals and fuel gas [95] .…”

Section: Pyrolysis Of Tcmrmentioning

confidence: 99%

“…The gasification reactor is the primary energy conversion equipment in TCMR gasification. Its primary function is to provide suitable reaction conditions for material gasification to produce fuel gas [94–95] . Depending on gas and solids interacting within the gasifier, three different reactors together with fixed‐bed, entrained flow gasifier, and fluidized‐bed are mainly classified [94–96] .…”

Section: Pyrolysis Of Tcmrmentioning

confidence: 99%

“…Catalysts are crucial in biomass pyrolysis because they lower the working temperature, speed up the reaction, improve conversion, and increase the yield of products. [94,96] So many investigations have focused on the synthesis of fuel gas using multiphase catalysts, which have active metal additions and excellent carriers. Alkali metal catalysts, bimetallic catalysts, monometallic catalysts, etc.…”

Section: Effect Of Catalystsmentioning

confidence: 99%

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Recent Advances in Solid Residues Resource Utilization in Traditional Chinese Medicine

Long

Guo

et al. 2023

ChemistrySelect

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Chinese medicine is widely employed in illness prevention and treatment. In recent years, the increased demand for Chinese medicine resources has resulted in a large quantity of waste created during industrialization. However, traditional methods for treating herbal residues, including burning, stacking, and burying, can cause significant environmental damage and resource waste. Furthermore, these application approaches have a low level of resource utilization and a low degree of utilization. Therefore, developing a classification management system is a necessary precondition for reusing Chinese herb residues for medicinal, feed, fertilizer, and energy resource reuse. This paper reviews the potential applications of Chinese herb residues in the extraction of active resources, composting, feed addition, bioethanol preparation, and pyrolysis to biochar, bio‐oil, and fuel gas. Overall, this work provides a foundation for further investigation into the high‐value usage model and resource reuse pathway of Chinese herb residues.

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“…As a result, the main purpose of the catalysts in the pyrolysis process focused on increasing the yield and improving the quality of the target products [ 7 ]. Many studies documented the catalyst of alkaline soil considerably improving the production and quality of pyrolysis gas during biomass pyrolysis [ 8 , 9 ]. Bingbing Qiu et al [ 10 ] revealed that AAEMs (alkali and alkaline soil metals) significantly promoted the decomposition of biomass and boosted the volatile fraction yield.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Pyrolysis of Sawdust with Desulfurized Fly Ash for Pyrolysis Gas Upgrading

Song

Tang

et al. 2022

IJERPH

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In this study, the catalytic effects of desulfurized fly ash (DFA) on the gaseous products of sawdust (SD) pyrolysis were investigated in a tubular furnace. The results indicated that DFA catalyzed the process of SD decomposition to improve the hydrogen content and the calorific value of pyrolysis gas. As to its effect on pyrolysis products, DFA increased the non-oxide content of CH4, C3H4, and H2 in pyrolysis gas by 1.4-, 1.8-, and 2.3-fold, respectively. Meanwhile, the catalytic effect of DFA reduced the CO and CO2 yields during DFA/SD pyrolysis. Based on the model compound method, CaSO3 and Ca(OH)2 in DFA was proved to have quite different catalytic effects on pyrolysis gas components. Ca(OH)2 accelerated the formation of CH4 and H2 through the cracking of methoxyl during lignin and cellulose degradation, while CaSO3 favored the generation of CO and CO2 due to the carbonyl and carboxyl of lignin in SD. CaSO3 also catalyzed SD pyrolysis to promote the C3H4 yield in pyrolysis gas. Overall, the catalytic pyrolysis of SD with DFA yielded negative-carbon emission, which upgraded the quality of the pyrolysis gas.

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Applications of catalysts in thermochemical conversion of biomass (pyrolysis, hydrothermal liquefaction and gasification): A critical review

Cited by 133 publications

References 144 publications

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production

Recent Advances in Solid Residues Resource Utilization in Traditional Chinese Medicine

Catalytic Pyrolysis of Sawdust with Desulfurized Fly Ash for Pyrolysis Gas Upgrading

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Applications of catalysts in thermochemical conversion of biomass (pyrolysis, hydrothermal liquefaction and gasification): A critical review

Cited by 133 publications

References 144 publications

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO2 and Ni–Co to Improve Bio-oil Production

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO2 and Ni–Co to Improve Bio-oil Production

Recent Advances in Solid Residues Resource Utilization in Traditional Chinese Medicine

Catalytic Pyrolysis of Sawdust with Desulfurized Fly Ash for Pyrolysis Gas Upgrading

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Product

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In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production

In Situ Synergistic Catalysis Hydrothermal Liquefaction of Spirulina by CuO–CeO₂ and Ni–Co to Improve Bio-oil Production