Catalytic pyrolysis of biomass by novel nanostructured catalysts

Dang, Phuong T.; Le, Hy G.; Pham, Giang; Vu, Hong T. M.; Nguyen, Kien T.; Dao, Canh D.; Le, Giang H.; Hoang, Thuy Thi; Tran, Hoa T. K.; Nguyen, Quang

doi:10.1117/12.2033667

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…The ascorbic acid content was determined according to the method of AOAC 967.21, which was evaluated on cashews earlier by Dao et al (2021).First,1 gofthesamplewasextractedthreetimesand thentitratedto100 mLwithdistilledwater.Next,10 mLofsample solutionaddedto1 mLof0.04%HClandtitratedwithDCPIP.The control sample was carried out in the same way as above, and the an-alyticalsamplewasdilutedwith0.1 gofascorbicacidupto100 mL.…”

Section: Determination Of Total Ascorbic Acidmentioning

confidence: 99%

Developing mango powders by foam mat drying technology

Nhi

Nghia

et al. 2023

Food Science & Nutrition

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Using mango purée from overripe mangoes to produce powders helped to solve agricultural product stagnation. The research investigates the effect of thickening additives, convection drying, and heat pump drying on bioactive compounds such as total phenolic content (TPC), total flavonoid content (TFC), color, and solubility of the final product. The obtained results showed that the mixture (gum arabic and maltodextrin in the ratio 50:50 w/w) at a concentration of 15% gave a good quality powder texture when dried by hot air convection at 55°C with TPC (21.24 ± 1.58 mg GAE/g dry weight [DW]) and TFC (0.34 ± 0.02 mg QE/g DW), respectively. In addition, the product has a high solubility of 64.35%, with the highest pass‐through point of 17.11.

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Section: Determination Of Total Ascorbic Acidmentioning

confidence: 99%

Developing mango powders by foam mat drying technology

Nhi

Nghia

et al. 2023

Food Science & Nutrition

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“…However, many recent checklists of Vietnamese mammals also added E. caudatus to the species list (Dang et al, 1994(Dang et al, , 2007(Dang et al, , 2008Kuznetsov, 2006). These "records" were based on the incorrect synonymy of "caudatus" and "baileyi" (see also Hoffmann, 1986), and in fact should be referred to E. baileyi (sensu Motokawa & Lin, 2005).…”

Section: Caudatus"mentioning

confidence: 99%

The first record of Episoriculus umbrinus from Vietnam, with notes on the taxonomic composition of Episoriculus (Mammalia, Soricidae)

Abramov¹,

Банникова²,

Chernetskaya³

et al. 2017

Rus.J.Theriol.

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ABSTRACT. The mitochondrial cytochrome b and nuclear ApoB and RAG2 genes were used to estimate the phylogenetic relationships in Asiatic red-toothed shrews (Soricidae, Episoriculus). Based on molecular data, the genus Episoriculus seems to consist of at least seven valid species: E. baileyi, E. caudatus, E. leucops, E. macrurus, E. sacratus, E. soluensis, and E. umbrinus. Genetic distances among all of them are found to be of 8-16%, with the only low distance (3.4%) being that between E. baileyi and E. leucops.Taiwanese shrew E. fumidus shows high genetic divergence (16-17% for cytb) from other species of Episoriculus. Based on both genetic and morphological data it should be attributed to a separate new genus Pseudosoriculus gen.n. Episoriculus umbrinus was found in Lao Cai Province, representing a new species record for the fauna of Vietnam; morphology-based diagnosis of this specimen has reliably been confirmed by molecular data. How to cite this article: Abramov A.V., Bannikova A.A., Chernetskaya D.M., Lebedev V.S., Rozhnov V.V. 2017. The first record of Episoriculus umbrinus from Vietnam, with notes on the taxonomic composition of Episoriculus (Mammalia, Soricidae) // Russian

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“…As one of the most well-known refinery cracking catalysts, FCC catalysts comprise a combination of Y zeolite (FAU topology), mesoporous alumina, and silica matrix active in precracking larger molecules, and binders and fillers to provide physical strength and integrity . Using FCC-type catalyst formulations for the processing of pyrolysis vapors has the potential to avoid scale-up issues and has been studied for the CFP of biomass. ,,,− …”

Section: Catalytic Fast Pyrolysismentioning

confidence: 99%

A Review of Recent Research on Catalytic Biomass Pyrolysis and Low-Pressure Hydropyrolysis

2021

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Direct catalytic upgrading of biomass-derived fast pyrolysis vapors can occur in different process configurations, under either inert or hydrogen-containing atmospheres. This review summarizes the myriad of different catalysts studied and benchmarks their deoxygenation performance by also taking into account the resulting decrease in bio-oil yield compared to a thermal pyrolysis oil. Generally, catalyst modifications aim at improving the initial selectivity of the catalyst to more desirable oxygen-free hydrocarbons and/or improving the catalysts’ stability against deactivation by coking. Optimizing the pore structure and acid site density/distribution of solid acid catalysts can slow down deactivation and prolong activity. Basic catalysts such as MgO and Na2O/γ-Al2O3 are excellent ketonization catalysts favoring oxygen removal via decarboxylation, whereas solid acid catalysts such as zeolites primarily favor decarbonylation and dehydration. Basic catalysts can therefore produce bio-oils with higher H/C ratios. However, since their coke formation per surface area is higher, compared to a microporous HZSM-5 zeolite, precoking (or imperfect regeneration) of these basic catalysts and operating for longer time-on-stream can be approaches to improve the oil yield. In-line vapor-phase upgrading with a dual bed comprising a solid acid catalyst followed by a basic catalyst active in ketonization and aldol condensation further improves deoxygenation while maintaining high bio-oil carbon recovery. Also low-cost catalysts such as iron-rich red mud have deoxygenation activity. An improved bio-oil carbon recoverycompared at a similar level of oxygen removalcan be obtained when changing from an inert atmosphere to a hydrogen-containing atmosphere and using an effective hydrodeoxygenation (HDO) catalyst. To keep costs low, this can be conducted at near-atmospheric pressure conditions. Pt/TiO2 and MoO3/TiO2 showed high activity and reduced coke formation. Stable performance has been demonstrated using Pt/TiO2 for 100+ reaction/regeneration cycles with woody biomass feedstock. If future works can demonstrate the same durability for lower-cost biomass containing higher contents of ash, N, and S, this would considerably boost the commercial viability of near-atmospheric pressure HDO. Further research should be directed to testing the durability of lower-cost HDO catalysts such as MoO3/TiO2 and further improving the activity and stability of lower-cost catalysts.

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Catalytic pyrolysis of biomass by novel nanostructured catalysts

Cited by 3 publications

References 27 publications

Developing mango powders by foam mat drying technology

Developing mango powders by foam mat drying technology

The first record of Episoriculus umbrinus from Vietnam, with notes on the taxonomic composition of Episoriculus (Mammalia, Soricidae)

A Review of Recent Research on Catalytic Biomass Pyrolysis and Low-Pressure Hydropyrolysis

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