Bimetallic NiMo-supported Al2O3@TiO2 core-shell microspheres with high hydrodeoxygenation efficiency toward syringol

Review Agricultural Engineering

Co-pyrolysis of microalgae and other biomass wastes for the production of high-quality bio-oil: Progress and prospective

Guangcan Su et al.

Summary: It has been shown that co-pyrolysis is an effective method for producing high-quality bio-oil, and the yield and quality of bio-oil can be improved by optimizing feedstocks and adding catalysts.

BIORESOURCE TECHNOLOGY (2022)

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Review Agricultural Engineering

Hydrothermal hydrolysis of algal biomass for biofuels production: A review

Hao Chen et al.

Summary: This paper elaborates the chemical mechanism of hydrothermal hydrolysis of algal biomass and summarizes the influences of temperature, residence time, total solid content, and pH on the biomethane production. The rheological behavior of algal slurries at various operational factors is discussed comprehensively. The recent advances in flow, heat and mass transfer model coupling with the generic kinetics model in continuous reactors and the application of energy-saving strategies for efficient algal biomass pretreatment are detailed reviewed.

BIORESOURCE TECHNOLOGY (2022)

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Review Agricultural Engineering

Recent advances in lignocellulosic biomass for biofuels and value-added bioproducts-A critical review

Veeramuthu Ashokkumar et al.

Summary: Lignocellulosic biomass is a renewable, economical, and carbon-neutral feedstock, but its complex multi-scale structure poses challenges for valorization and saccharification. This review discusses the latest methods and technologies in biomass pretreatment, as well as genetic engineering techniques for developing advanced strategies in fermentation processes. The aim is to bridge the gap in developing economically feasible lignocellulosic products and chemicals using biorefining technologies.

BIORESOURCE TECHNOLOGY (2022)

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Review Energy & Fuels

Catalytic Hydrodeoxygenation of Lignin-Derived Oxygenates: Catalysis, Mechanism, and Effect of Process Conditions

Vallabh S. Prabhudesai et al.

Summary: The review focuses on the hydrodeoxygenation (HDO) of model compound oxygenates in order to propose a comprehensive reaction mechanism for the HDO of bio-oils. The effects of catalyst, temperature, hydrogen partial pressure, and solvent on the product distribution are thoroughly discussed. This review provides valuable insights into the interplay between the catalyst nature, HDO mechanism, and product distribution, as well as offering guidance for the practical application of HDO in bio-oil upgrading.

ENERGY & FUELS (2022)

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Article Environmental Sciences

Spray pyrolysis synthesis and UV-driven photocatalytic activity of mesoporous Al2O3@TiO2 microspheres

The Ky Vo

Summary: In this study, mesoporous microspheres of Al2O3 @TiO2 with improved adsorption and photocatalytic performance were successfully prepared. The incorporation of amorphous γ-Al2O3 was found to enhance the removal of tetracycline and promote the separation and migration of photo-generated holes and electrons. The study provides a simple and scalable method for manufacturing Al2O3-decorated TiO2 microspheres.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Pyrolysis characteristics and quantitative kinetic model of microalgae Tetralselmis sp.

The Ky Vo et al.

Summary: This study systematically explores the pyrolysis characteristics of microalgae biomass and investigates the influence of different conditions on the conversion and chemical composition of the pyrolytic products. The results show that the conversion of microalgae is affected by heating rate and temperature, and the chemical composition of the biocrude is significantly influenced by pyrolysis conditions. A quantitative model is used to determine the composition of carbohydrates, proteins, and lipids in the pyrolytic products, and the time- and temperature-dependent yields of the solid residue, biocrude, and gas are predicted.

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2022)

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Review Chemistry, Physical

Advances in studies of the structural effects of supported Ni catalysts for CO2 hydrogenation: from nanoparticle to single atom catalyst

Zhitao Zhang et al.

Summary: Supported Ni catalysts have great potential in CO2 hydrogenation, with products including methane, carbon monoxide, methanol, and formic acid. The electronic and geometric structures of the catalyst significantly affect the activity and selectivity of the reaction, with selectivity depending on the support. To enhance activity, stability, and tunable selectivity, structure control of the Ni catalyst is crucial.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Materials Science, Ceramics

Mo-modified TiO2 mesoporous microspheres prepared by spray pyrolysis for adsorption-photocatalytic water remediation

The Ky Vo

Summary: Mo-modified TiO2 microspheres prepared by spray pyrolysis method showed high removal efficiency towards tetracycline antibiotics and exhibited good photocatalytic activity and stability.

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY (2022)

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Article Chemistry, Physical

Spray pyrolysis-derived MoO3@Al2O3@TiO2 core-shell structures with enhanced hydrodeoxygenation performance

The Ky Vo et al.

Summary: This study successfully prepared γ-Al2O3 microspheres incorporating high levels of Mo catalyst using ultrasonic-assisted spray pyrolysis. The microspheres were then decorated with a hydrophobic TiO2 layer, forming core-shell-structured catalysts. The prepared catalysts exhibited excellent catalytic activity and stability.

CATALYSIS COMMUNICATIONS (2022)

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Article Engineering, Chemical

Bifunctional Pt-Re Catalysts in Hydrodeoxygenation of Isoeugenol as a Model Compound for Renewable Jet Fuel Production

Mark Martinez-Klimov et al.

Summary: In this study, bimetallic platinum-rhenium catalysts supported on activated carbon were characterized and tested for the hydrodeoxygenation of isoeugenol. The catalyst with the highest rhenium loading, Pt-Re(1:5)/C, showed the highest activity, achieving complete conversion of isoeugenol and high yield of propylcyclohexane.

ACS ENGINEERING AU (2022)

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Article Chemistry, Applied

Modifying the catalytic properties of hydrotreating NiMo-S phases by changing the electrodonor capacity of the support

Carlos Lopez-Cruz et al.

Summary: This study investigated the hydrogenation activity and physico-chemical characterization of a series of NiMo catalyst supported on materials with different acid-base properties. The results showed a clear correlation between the electrodonor capacity of the support, the negative charge density of the supported NiMo oxides, and the intrinsic hydrogenation rate of the sulfided phase. Spectroscopic characterization ruled out any possible contribution derived from differences in the NiMoS2 stack or slab size distributions. The experimental results suggest the occurrence of an electron transfer phenomenon from the support to the supported NiMoS2 slabs, with this effect being stronger for supports with higher electrodonor capacity.

CATALYSIS TODAY (2021)

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Article Chemistry, Applied