Vapor-phase conversion of aqueous 3-hydroxybutyric acid and crotonic acid to propylene over solid acid catalysts

2021 ◽  
Author(s):  
Shijie Leow ◽  
Andrew J. Koehler ◽  
Lauren E. Cronmiller ◽  
Xiangchen Huo ◽  
Gabriella D. Lahti ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Solid Acid ◽  
Flow Reactor ◽  
Crotonic Acid ◽  
Phase Conversion ◽  
Hydroxybutyric Acid ◽  
Continuous Flow Reactor ◽  
New Strategy ◽  
Silica Alumina ◽  
Fuels And Chemicals

Vapor phase conversion of 3-hydroxybutyric and crotonic acid to propylene in a continuous-flow reactor over silica–alumina and niobium catalysts demonstrates a new strategy for producing renewable fuels and chemicals from wastewater carbon.

Conversion of Biodiesel By-Product Glycerol to Fuel Ethers over Different Solid Acid Catalysts

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Nalan Ozbay ◽  
Nuray Oktar ◽  
Gulsen Dogu ◽  
Timur Dogu
Keyword(s):  
Solid Acid ◽  
Flow Reactor ◽  
Butyl Alcohol ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Transportation Fuel ◽  
Glycerol Conversion ◽  
Amberlyst 15 ◽  
Continuous Flow Reactor ◽  
Tert Butyl Alcohol

In this study, the etherification reaction of glycerol (G) with tert-butyl alcohol (TBA) was investigated for the production of high quality transportation fuel additives. The reaction was carried out in liquid phase, in a continuous flow reactor in the presence of various solid acid catalysts. Activities of acidic resin catalysts, such as Amberlyst-15 (A-15), Amberlyst-16 (A-16) and Amberlyst-35 (A-35), Nafion-SAC-13 and ?-alumina were compared. Significant increase in conversion was observed with an increase in temperature. Amberlyst 15 showed the highest activity at about 110°C, giving glycerol conversion values of about 0.5 at a space time of 18 g cm-3 s. However, A-16 gave higher di-ether selectivity values. Nafion-SAC-13 showed activity at higher temperatures, while the activity of ?-alumina was very low, even at 400°C.

Tailoring the selectivity in 2-butene conversion over supported d0 group 4, 5 and 6 metal hydrides: from dimerization to metathesis

2015 ◽  
Vol 5 (10) ◽  
pp. 4765-4771 ◽  
Author(s):  
Kai C. Szeto ◽  
Nicolas Merle ◽  
Cesar Rios ◽  
Pascal Rouge ◽  
Jessica Llop Castelbou ◽  
...  
Keyword(s):  
Continuous Flow ◽  
High Selectivity ◽  
Flow Reactor ◽  
Metal Hydrides ◽  
Zirconium Hydride ◽  
Group 4 ◽  
Continuous Flow Reactor ◽  
Silica Alumina ◽  
And Tungsten

2-Butenes are transformed in a continuous flow reactor over metal hydrides of zirconium, tantalum and tungsten supported on silica–alumina. Exceptionally high selectivity to dimeric products is obtained over supported zirconium hydride catalysts.

Renewable Energy from Agricultural Waste

2018 ◽  
Vol 69 (6) ◽  
pp. 1363-1366 ◽  
Author(s):  
Stefania Daniela Bran ◽  
Petre Chipurici ◽  
Mariana Bran ◽  
Alexandru Vlaicu
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Gas Chromatography ◽  
Continuous Flow ◽  
Laboratory Experiments ◽  
Fermentation Process ◽  
Flow Reactor ◽  
Agricultural Waste ◽  
Continuous Flow Reactor ◽  
Natural Support ◽  
Co2 Flow

This paper has aimed at evaluating the concentration of bioethanol obtained using sunflower stem as natural support, molasses as carbon source and Saccharomyces cerevisiae yeast in a continuous flow reactor. The natural support was tested to investigate the immobilization/growth of S. cerevisiae yeast. The concentration of bioethanol produced by fermentation was analyzed by gas chromatography using two methods: aqueous solutions and extraction in organic phase. The CO2 flow obtained during the fermentation process was considered to estimate when the yeast was deactivated. The laboratory experiments have highlighted that the use of plant-based wastes to bioconversion in ethanol could be a non-pollutant and sustainable alternative.

Thermocatalytic Hydrodeoxygenation and Depolymerization of Waste Lignin to Oxygenates and Biofuels in a Continuous Flow Reactor at Atmospheric Pressure

2020 ◽  
Vol 8 (35) ◽  
pp. 13195-13205 ◽  
Author(s):  
Swathi Mukundan ◽  
Daria Boffito ◽  
Abhijit Shrotri ◽  
Luqman Atanda ◽  
Jorge Beltramini ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Continuous Flow Reactor

scholarly journals Production of cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a solid acid catalyst

RSC Advances ◽  
2021 ◽  
Vol 11 (23) ◽  
pp. 14071-14078
Author(s):  
Xi-Que Wu ◽  
Pan-Dao Liu ◽  
Qun Liu ◽  
Shu-Ying Xu ◽  
Yu-Cang Zhang ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Cellulose Nanofibrils ◽  
Acid Catalyst ◽  
Deep Eutectic Solvents ◽  
Elephant Grass ◽  
Film Forming ◽  
New Strategy

A new strategy was developed to produce cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a recyclable solid acid catalyst with assistance of ultrasonic disintegration and a suction filtration film forming method.

scholarly journals Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 518
Author(s):  
Cecilia Mateos-Pedrero ◽  
Miguel A. Soria ◽  
Antonio Guerrero-Ruíz ◽  
Inmaculada Rodríguez-Ramos
Keyword(s):  
Low Temperature ◽  
Flow Reactor ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Porous Stainless Steel ◽  
Pd Membrane ◽  
Continuous Flow Reactor ◽  
Oxidation In Air ◽  
H2 Yield ◽  
Water Gas

The external surface of a commercial porous stainless steel (PSS) was modified by either oxidation in air at varying temperatures (600, 700, and 800 °C) or coating with different oxides (SiO2, Al2O3, and ZrO2). Among them, PSS-ZrO2 appears as the most suitable carrier for the synthesis of the Pd membrane. A composite Pd membrane supported on the PSS-ZrO2 substrate was prepared by the electroless plating deposition method. Supported Ru catalysts were first evaluated for the low-temperature methane dry reforming (DRM) reaction in a continuous flow reactor (CR). Ru/ZrO2-La2O3 catalyst was found to be active and stable, so it was used in a membrane reactor (MR), which enhances the methane conversions above the equilibrium values. The influence of adding H2O to the feed of DRM was investigated over a Ru/ZrO2-La2O3 catalyst in the MR. Activity results are compared with those measured in a CR. The addition of H2O into the feed favors other reactions such as Water-Gas Shift (RWGS) and Steam Reforming (SR), which occur together with DRM, resulting in a dramatic decrease of CO2 conversion and CO production, but a marked increase of H2 yield.

scholarly journals Development of a tubular continuous flow reactor for the investigation of improved gas–solid interaction in photocatalytic CO2 reduction on TiO2

2019 ◽  
Vol 18 (2) ◽  
pp. 314-318 ◽  
Author(s):  
Martin Dilla ◽  
Ahmet E. Becerikli ◽  
Alina Jakubowski ◽  
Robert Schlögl ◽  
Simon Ristig
Keyword(s):  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Tubular Reactor ◽  
Co2 Reduction ◽  
Continuous Flow Reactor ◽  
Reactor Geometry

Newly developed tubular reactor geometry allows intensive gas–solid interaction in photocatalytic gas-phase CO2 reduction.

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