Catalytic fast pyrolysis of rice husk: Influence of commercial and synthesized microporous zeolites on deoxygenation of biomass pyrolysis vapors

Naqvi, Salman Raza; Naqvi, Muhammad

doi:10.1002/er.3943

Cited by 46 publications

(25 citation statements)

References 36 publications

(108 reference statements)

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“…MCM-22 and its delaminated derivative, ITQ-2, have been tested in the catalytic pyrolysis of rice husk by Naqvi et al [364][365][366][367] at 450 1C in a lab scale fixed-bed pyrolyzer and compared to conventional zeolites with different micropore sizes (8, 10 and 12-rings). Despite scarce information that is given regarding the formation of coke, some conclusions were provided.…”

Section: Hierarchical Zeolites In Catalytic Pyrolysismentioning

confidence: 99%

From 3D to 2D zeolite catalytic materials

et al. 2018

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Research activities and recent developments in the area of three-dimensional zeolites and their two-dimensional analogues are reviewed. Zeolites are the most important industrial heterogeneous catalysts with numerous applications. However, they suffer from limited pore sizes not allowing penetration of sterically demanding molecules to their channel systems and to active sites. We briefly highlight here the synthesis, properties and catalytic potential of three-dimensional zeolites followed by a discussion of hierarchical zeolites combining micro- and mesoporosity. The final part is devoted to two-dimensional analogues developed recently. Novel bottom-up and top-down synthetic approaches for two-dimensional zeolites, their properties, and catalytic performances are thoroughly discussed in this review.

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Section: Hierarchical Zeolites In Catalytic Pyrolysismentioning

confidence: 99%

From 3D to 2D zeolite catalytic materials

et al. 2018

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“…In order to selectively obtain the required bio‐oil components, a catalyst is usually introduced during the pyrolysis process . The ZSM‐5 molecular sieves has a stable, porous structure, so it can be used as a catalyst directly, but it is also a convenient basis for catalyst modification …”

Section: Introductionmentioning

confidence: 99%

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

et al. 2020

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In this study, sawdust was selected as the raw material for biomass pyrolysis to obtain organic products. The catalyst was modified with two elements (Fe and Zn). Through analysis of the catalytic products, we attempted to identify a pyrolysis catalyst that can improve the yield of aromatic hydrocarbon products.ZSM-5, modified with Fe and Zn, was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and Brunauer-Emmett-Teller (BET) measurements. Tube furnace and flash pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) were used to comprehensively investigate the characteristics of the products of biomass pyrolysis. The highest yield of phenols was obtained using the Femodified ZSM-5 catalyst, which was 18.30% higher than the yield obtained by the pure ZSM-5 catalyst. The lowest yield of acid products was obtained by single-metal-supported catalytic pyrolysis with Fe or Zn, which was 50.66% lower than the yield obtained by direct pyrolysis. During the pyrolysis of biomass using metal-modified catalysts, the production of aromatic hydrocarbons was greatly improved. Among them, compared with direct pyrolysis, the Fe-Zn co-modified ZSM-5 catalyst exhibited the weakest promotion of aromatic hydrocarbon formation, but there was still a 68.50% improvement. Although the co-modified catalyst did not show absolute advantages under the conditions used for this experiment, the improvements in the production of aromatics and phenolic products also showed its potential for improving bio-oil products. Under the action of Fe-modified catalysts, the most abundant components in the gas product were CO and CO 2 , which reached levels as high as 53.45% and 15.34%, respectively, showing strong deoxidation capabilities. Therefore, Fe-modified ZSM-5 catalysts were found to better promote the formation of aromatic hydrocarbon products of biomass pyrolysis. K E Y W O R D Scatalytic pyrolysis, modified ZSM-5, product characteristics: Py-GC/MS

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“…); [116][117][118] 2) The second specie provides a system of uniform pore dimensions [119,120] which, for instances, are: 1) 0D channel of zeolites (MTN, etc. ), [121] 2) 1D channel of zeolites (AEL, AFI, LTL, etc. ), [122,123] 3) 2D channel of zeolites (HEU, IWT, MWW, etc.…”

Section: Preparation Of Nanocarbon Materials In Zeolites Templatesmentioning

confidence: 99%

Revival of Zeolite‐Templated Nanocarbon Materials: Recent Advances in Energy Storage and Conversion

et al. 2020

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Nanocarbon materials represent one of the hottest topics in physics, chemistry, and materials science. Preparation of nanocarbon materials by zeolite templates has been developing for more than 20 years. In recent years, novel structures and properties of zeolite-templated nanocarbons have been evolving and new applications are emerging in the realm of energy storage and conversion. Here, recent progress of zeolite-templated nanocarbons in advanced synthetic techniques, emerging properties, and novel applications is summarized: i) thanks to the diversity of zeolites, the structures of the corresponding nanocarbons are multitudinous; ii) by various synthetic techniques, novel properties of zeolite-templated nanocarbons can be achieved, such as hierarchical porosity, heteroatom doping, and nanoparticle loading capacity; iii) the applications of zeolite-templated nanocarbons are also evolving from traditional gas/vapor adsorption to advanced energy storage techniques including Li-ion batteries, Li-S batteries, fuel cells, metal-O 2 batteries, etc. Finally, a perspective is provided to forecast the future development of zeolite-templated nanocarbon materials.

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Catalytic fast pyrolysis of rice husk: Influence of commercial and synthesized microporous zeolites on deoxygenation of biomass pyrolysis vapors

Cited by 46 publications

References 36 publications

From 3D to 2D zeolite catalytic materials

From 3D to 2D zeolite catalytic materials

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

Revival of Zeolite‐Templated Nanocarbon Materials: Recent Advances in Energy Storage and Conversion

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