Solid Nanoparticles that Catalyze Biofuel Upgrade Reactions at the Water/Oil Interface

  title={Solid Nanoparticles that Catalyze Biofuel Upgrade Reactions at the Water/Oil Interface},
  author={Steven P. Crossley and Jimmy A. Faria and Min Shen and Daniel E. Resasco},
  pages={68 - 72}
Metal in the Middle Biphasic reaction mixtures allow the isolation of sensitive products, which can form in one solvent and then shift rapidly into another, protected from side reactions and interfering by-products. However, ensuring that catalysts remain in the proper phase can be challenging, and surfactants added to induce efficient mixing often prove difficult to separate from the product stream. Crossley et al. (p. 68; see the Perspective by Cole-Hamilton) tackle these issues by preparing… 

Fischer–Tropsch Synthesis Catalyzed by Solid Nanoparticles at the Water/Oil Interface in an Emulsion System

Fischer–Tropsch synthesis (FTS) was carried out in a water/oil mixture medium, using a Ru catalyst supported on a multi-walled carbon nanotube/MgO–Al2O3 hybrid as a catalyst support. The nanohybrid

Janus Catalysts Direct Nanoparticle Reactivity

Solid nanoparticles that have solubility in both water and oils into catalysts that can operate in both phases, which can be recovered even from complex mixtures, such as those that result when biomass products are upgraded into fuels.

pH-Responsive Gas-Water-Solid Interface for Multiphase Catalysis.

Interestingly, the alcohol oxidation activation energy for the microbubble systems is much lower than that for the conventional multiphase reaction, also indicating that the developed microbubbles system may be a valuable platform to design innovative multiphases catalysis reactions.

Carbon Nanotube/Zeolite Hybrid Catalysts for Glucose Conversion in Water/Oil Emulsions

The isomerization of glucose to fructose and its subsequent dehydration to hydroxymethylfurfural (HMF) have been investigated on nanohybrid catalysts that stabilize emulsions comprising aqueous and

Tandem Catalysis with Antagonistic Catalysts Compartmentalized in the Dispersed and Continuous Phases of a Pickering Emulsion.

Pickering emulsions-emulsions stabilized by solid particles-are used as easy-to-prepare and bioinspired, compartmentalized reaction media for tandem catalysis and give the desired product in high yield, as a result of an increased interfacial area and suppressed mutual destruction of the acid and base catalysts.

Pickering Emulsion-Derived Liquid-Solid Hybrid Catalyst for Bridging Homogeneous and Heterogeneous Catalysis.

We describe a novel method to prepare a liquid-solid hybrid catalyst via interfacial growth of a porous silica crust around Pickering emulsion droplets, which allowed us to overcome the current

Tuning the Interfacial Activity of Mesoporous Silicas for Biphasic Interface Catalysis Reactions.

Interface-active particle materials that are able to assemble at the oil/water interface so as to stabilize droplets, are gaining unprecedented interest due to the intriguing applications in



Inversion of silica-stabilized emulsions induced by particle concentration.

The tendency for particles to behave more hydrophobically at higher concentrations in oil is due to the reduction in the effective silanol content at their surfaces as a result of gel formation via silanol-silanol hydrogen bonds, and a concentration-induced change in particle wettability is advanced.

Influence of Particle Wettability on the Type and Stability of Surfactant-Free Emulsions†

A systematic investigation into the influence of the wettability of spherical, nanometer-sized silica particles on the type and stability of water−toluene emulsions is described. The particles range

Emulsions stabilized by carbon nanotube-silica nanohybrids.

  • M. ShenD. Resasco
  • Chemistry, Engineering
    Langmuir : the ACS journal of surfaces and colloids
  • 2009
Emulsions have been stabilized by carbon nanotube-silica nanohybrids and are remarkably stable against coalescence and sedimentation and can be easily separated by filtration or centrifugation, which make them suitable for applications in interfacial catalytic processes in which the catalyst can be quickly recovered after reaction.

Production of Liquid Alkanes by Aqueous-Phase Processing of Biomass-Derived Carbohydrates

Liquid alkanes with the number of carbon atoms ranging from C7 to C15 were selectively produced from biomass-derived carbohydrates by acid-catalyzed dehydration, which was followed by aldol

An Experimental Verification of the Physical Nature of Pt Adsorption onto Alumina

Abstract In the past decade increasing attention has been paid to catalyst preparation, and in particular to the impregnation step. Various models have been employed to describe the uptake of

Silica particle-stabilized emulsions of silicone oil and water: aspects of emulsification.

The influence of particle concentration, oil/water ratio, and emulsification time on the relative extents of fragmentation and coalescence during the formation of emulsions, prepared using either batch or continuous methods, has been investigated.

Historical Developments in Hydroprocessing Bio-oils

This paper is a review of the developments in the field of catalytic hydroprocessing of biomass-derived liquefaction conversion products (bio-oil) over the past 25 years. Work has been underway,