Selective production of ketones from biomass waste containing a large amount of water using an iron oxide catalyst

Funai, Satoshi; Tago, Teruoki; Masuda, Toshio

doi:10.1016/j.cattod.2010.10.021

Cited by 21 publications

(13 citation statements)

References 16 publications

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“…It should be noted that the quantification analysis revealed that CO2 was the main composition in the gas product. The dependences of acetic acid, acetone and gas on W/F implied that acetone is produced from the decomposition of acetic acid and further goes to complete oxidation at high W/F and T. This behaviour was supported by the mechanism reported in the previous work, acetic acid can be directly converted to acetone and CO2 over ZrO2FeOx [13]. The highest yield of acetone was obtained at W/F = 2 h and T = 593 K. To obtain the highest purity of acetone in the liquid product (> 95 %), the catalytic upgrading at W/F = 6 h and T = 593 K is suggested.…”

Section: Characterization Of Wastewater and Product From Pyrolysissupporting

confidence: 71%

Recovery of useful chemicals from palm oil mill wastewater

et al. 2017

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Abstract.A two-step process consisting of pyrolysis of dried sludge and catalytic upgrading of pyrolysed liquid was proposed. Wastewater from a palm oil mill was separated to solid cake and liquid by filtration. The solid cake was dried and pyrolysed at 773 K. Liquid product obtained from the pyrolysis had two immiscible aqueous and oil phases (PL-A and PL-O). Identification of chemicals in PL-A and PL-O indicated that both phases contained various chemicals with unsaturated bonds, such as carboxylic acids and alcohols, however, most of the chemicals could not be identified.Catalytic upgrading of PL-A and PL-O over ZrO2FeOx were separately performed using a fixed bed reactor at various conditions, T = 513-723 K and mass of catalyst to feed rate = 0.25-10 h. The main components in the liquid products of PL-A upgrading were methanol and acetone whereas they were acetone and phenol in the case of PL-O upgrading. More than 15% of carbon in raw material was deposited on the catalyst. To reduce the carbon deposition, the used catalyst was treated with air at 823 K. This simple treatment could reasonably regenerate the catalyst only for the case of PL-A catalytic upgrading.

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Section: Characterization Of Wastewater and Product From Pyrolysissupporting

confidence: 71%

Recovery of useful chemicals from palm oil mill wastewater

et al. 2017

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“…Next, the lignin-derived slurry liquid was converted into phenols. Catalytic cracking of the slurry liquid was carried out over an iron oxide catalyst, which we previously developed for converting biomass wastes into useful chemicals [21][22][23][24]. 10 This catalyst was applicable to the reaction of the slurry liquid, and the yield of phenols and cresols increased after the catalytic reaction.…”

Section: Introductionmentioning

confidence: 99%

“…5 wt% of catechol or phenol water solution was fed into the fixed-bed flow reactor at 673 K for 2 h under atmospheric pressure. The details of the reaction apparatus were described in our previous studies [23,24]. W/F model was varied between 0 and 4 h, where F model is the flow 15 rate of the model compound (g/h).…”

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confidence: 99%

Production of phenols from lignin-derived slurry liquid using iron oxide catalyst

Yoshikawa

Shinohara

Yagi

et al. 2014

Applied Catalysis B: Environmental

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A two-step process consisting of depolymerization and catalytic cracking without hydrogen addition was carried out to produce phenols from lignin. In the first step, lignin was depolymerized using a silica-alumina catalyst in a water/1-butanol solution at 623K for 5 2 h. After the reaction, lignin-derived slurry liquid was obtained in 67 C-mol% yield. From the model studies, it was considered that lignin was mainly depolymerized via hydrolysis of aryl ether bonds between lignin units. For the second step, the catalytic reaction of the 1-butanol phase of the slurry liquid was carried out over an iron oxide catalyst using a high ・The recovery fraction of phenols increased as the F H2O /F value increased.

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“…Moreover, acetone is selectively produced from biomass-derived tar (nonedible biomass such as sewage sludge [14], fermentation residue [15] and livestock excrement [16]) using an iron oxide composite catalyst. Accordingly, acetone conversion over solid-acid catalysts has become an attractive method for producing light olefins.…”

Section: Introductionmentioning

confidence: 99%

Selective synthesis for light olefins from acetone over ZSM-5 zeolites with nano- and macro-crystal sizes

Tago

Konno

Sakamoto

et al. 2011

Applied Catalysis A: General

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Production of light olefins such as ethylene, propylene and isobutylene from acetone was examined over ZSM-5 zeolites. These light olefins are produced from acetone over the acid sites of the zeolite via a series of consecutive reactions where olefins such as ethylene and propylene are obtained by cracking of isobutylene produced from aldol condensation products of acetone. Macro-and nano-sized ZSM-5 zeolites were prepared by conventional hydrothermal and emulsion methods, respectively, and the ZSM-5 zeolites with nearly the same acidity and BET surface area were obtained regardless of the crystal sizes. From SEM observations, the crystal sizes of the zeolites were approximately 2000 nm and 30-40 nm.These zeolites with different crystal sizes were applied to light olefins synthesis from acetone, and the effect of crystal size on catalytic activity and stability was investigated. As compared with the macro-seized zeolite, the nano-sized zeolite exhibited a high activity over a long lifetime. However, because the nano-sized zeolite possesses a large external surface area, undesirable reactions to form aromatics from the produced light olefins occurred on the acid sites located near the external surface. To inhibit aromatics formation, selective deactivation of the acid sites located near the outer surface of the zeolite was achieved via the catalytic cracking of silane (CCS) method using diphenyl silane (DP-silane). The CCS method was effective in deactivating the acid sites located near the external surface of the ZSM-5 zeolite.Moreover, the nano-size zeolite after the CCS treatment using DP-silane exhibited high olefins and low aromatics yields under high acetone conversion conditions.

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Selective production of ketones from biomass waste containing a large amount of water using an iron oxide catalyst

Cited by 21 publications

References 16 publications

Recovery of useful chemicals from palm oil mill wastewater

Recovery of useful chemicals from palm oil mill wastewater

Production of phenols from lignin-derived slurry liquid using iron oxide catalyst

Selective synthesis for light olefins from acetone over ZSM-5 zeolites with nano- and macro-crystal sizes

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