Publications related to Production, characterization and upgrading of biomass-derived acetal-stabilized carbohydrates

Pretreatment of Douglas fir wood biomass for improving saccharification efficiencies

Edgard Gnansounou, Juan David Villegas Gomez, Simone Chiesa, Rajeev Kumar Sukumaran

The main aim of this study was to analyze dilute acid pretreatment for the Douglas fir wood in order to improve the efficiency of hydrolysis with an ultimate aim to produce bioethanol. Compositional analysis of the untreated Douglas fir biomass revealed th ...

2010

High-solids biphasic CO2-H2O pretreatment of lignocellulosic biomass

Jeremy Luterbacher

A high pressure (200 bar) CO2-H2O process was developed for pretreating lignocellulosic biomass at high-solid contents, while minimizing chemical inputs. Hardwood was pretreated at 20 and 40 (wt.%) solids. Switchgrass, corn stover, big bluestem, and mixed ...

Wiley-Blackwell2010

Dioxygen Reduction by Cobalt(II) Octaethylporphyrin at Liquid / Liquid Interfaces

Hubert Girault, Manuel Alejandro Méndez Agudelo, Bin Su, Raheleh Partovi Nia, Zdenek Samec

Oxygen reduction catalyzed by cobalt(II) (2,3,7,8,12,13,17,18-octaethylporphyrin) [Co(OEP)] at soft interfaces is studied by voltammetry and biphasic reactions. When Co(OEP) is present in a solution of 1,2-dichloroethane in contact with an aqueous acidic s ...

Wiley-Blackwell2010

Bronsted Acid Catalyzed Enantioselective Three-Component Reaction Involving the alpha Addition of Isocyanides to Imines

Jieping Zhu

That a chiral phosphoric acid is able to catalyze the three-component reaction of aldehydes, anilines, and alpha -isocyanoacetamides, leading to 2-(1-aminoalkyl)-5-aminooxazoles in excellent yields and moderate to good enantioselectivities, was reported. [ ...

2009

Anomeric effects in pyranosides and related acetals

Pierre Vogel, Sandrine Gerber

The anomeric effect, originally defined as the preference of an electronegative substituent at the anomeric position of pyranosides to stand in an axial rather than an equatorial position, results from the combination of multiple steric, stereoelectronic a ...

RCS Publishing2009

Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

Albert Renken, Lioubov Kiwi, Martin Grasemann

Systematic studies of mass transfer interactions with intrinsic reaction kinetics were performed for the threephase selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY) to 2-methyl-3-buten-2-ol (MBE) over a modified Pd/CaC

{O}_{3}

catalyst under solvent ...

2008

Hafnium Trifluoromethanesulfonate (Hafnium Triflate) as a Highly Efficient Catalyst for Chemoselective Thioacetalization and Transthioacetalization of Carbonyl Compounds

Jieping Zhu

A range of carbonyl compds. including aliph. and arom. aldehydes and ketones were converted to the corresponding thioacetals in high yields in the presence of a catalytic amt. of hafnium trifluoromethanesulfonate (0.1 mol%, room temp.). The mild conditions ...

2008

Chiral Phosphites and Phosphoramidites Based on the Tropane Skeleton and Their Application in Catalysis

Nicolai Cramer

Chiral BINOL phosphorochloridites were esterified and amidated with enantiopure 6-hydroxytropinone [6-hydroxy-8-azabicyclo[3.2.1]octan-3-one] cyclic acetal to yield chiral bidentate and monodentate phosphite-phosphoramidite ligands for copper-catalyzed asy ...

American Chemical Society2006

Chemical investigations on the thermal behaviour of wood during friction welding

Bernhard Stamm, Julius Natterer

Friction welding is a new technology in the course of which wood pieces are subjected to circular or linear movements in a welding machine. The wood in the contact zone is heated and melted. Aiming at a better understanding of the thermal alteration of woo ...

2006

Solvent-Free Selective Hydrogenation of 2-Butyne-1,4-diol over Structured Palladium Catalyst

Albert Renken, Lioubov Kiwi, Eric Joannet

Hydrogenation of 2-butyne-1,4-diol catalyzed by Pd nanoparticles on activated carbon fibers (ACFs) was studied. The ACF support in the form of woven fabrics provides the basis for structured catalytic fixed beds. In the present study, this catalyst was int ...

American Chemical Society2005

Production, characterization and upgrading of biomass-derived acetal-stabilized carbohydrates

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Pretreatment of Douglas fir wood biomass for improving saccharification efficiencies

High-solids biphasic CO2-H2O pretreatment of lignocellulosic biomass

Dioxygen Reduction by Cobalt(II) Octaethylporphyrin at Liquid / Liquid Interfaces

Bronsted Acid Catalyzed Enantioselective Three-Component Reaction Involving the alpha Addition of Isocyanides to Imines

Anomeric effects in pyranosides and related acetals

Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

Hafnium Trifluoromethanesulfonate (Hafnium Triflate) as a Highly Efficient Catalyst for Chemoselective Thioacetalization and Transthioacetalization of Carbonyl Compounds

Chiral Phosphites and Phosphoramidites Based on the Tropane Skeleton and Their Application in Catalysis

Chemical investigations on the thermal behaviour of wood during friction welding

Solvent-Free Selective Hydrogenation of 2-Butyne-1,4-diol over Structured Palladium Catalyst

Bronsted Acid Catalyzed Enantioselective Three-Component Reaction Involving the alpha Addition of Isocyanides to Imines

Solvent-Free Selective Hydrogenation of 2-Butyne-1,4-diol over Structured Palladium Catalyst

Pretreatment of Douglas fir wood biomass for improving saccharification efficiencies

Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

High-solids biphasic CO2-H2O pretreatment of lignocellulosic biomass

Hafnium Trifluoromethanesulfonate (Hafnium Triflate) as a Highly Efficient Catalyst for Chemoselective Thioacetalization and Transthioacetalization of Carbonyl Compounds

Anomeric effects in pyranosides and related acetals

Chiral Phosphites and Phosphoramidites Based on the Tropane Skeleton and Their Application in Catalysis

Dioxygen Reduction by Cobalt(II) Octaethylporphyrin at Liquid / Liquid Interfaces

Chemical investigations on the thermal behaviour of wood during friction welding