Category

Catalysts

ApplicationCatalystsCharacteristic dimensionCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialSAXSTechniqueWAXS

Restricting Effect of Solvent Aggregates on Distribution and Mobility of CuCl2 in Homogenous Catalysis

Wang, Yongtao; Wang, Guanqi; Yao, Jia; Li, Haoran

Extensive experimental and theoretical studies have proven the existence of solvent aggregates in alcohols, and some attempts have been made to explore the uneven distribution of solutes. Here, we studied the distribution and mobility of CuCl2 in 3-hexanol and ethanol and investigated the aerobic oxidation of 2,3,6-trimethylphenol under these systems.…
25 November 2019
ApplicationCatalystsCharacteristic dimensionCharacterizationCustomer publicationsMaterialOtherPorous materialSAXSTechnique

Tailoring the Hydrophobicity of Mesoporous Organosilica for Protein Trapping and Supported Catalysis

Osta, Oriana; Bombled, Marianne; Partouche, David; Gallier, Florian; Lubin-Germain, Nadège; Brodie-Linder, Nancy; Alba-Simionesco, Christiane

We propose a method to enhance lysozyme trapping and supported-Copper catalysis when confined in organosilica materials. The direct synthesis presented here allows the control of the silica surface hydrophobicity by uniform introduction of methyl or phenyl groups. As a result, the lysozyme trapping is observed to be 3.2 times more…
25 November 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialsMaterialNanoparticles & colloidsParticle size and size distributionParticlesPhase analysisPorous materialSAXSTechnique

Highly Selective Continuous Flow Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol in a Pt/SiO2 Coated Tube Reactor

Bai, Yang; Cherkasov, Nikolay; Huband, Steven; Walker, David; Walton, Richard; Rebrov, Evgeny;

A novel continuous flow process for selective hydrogenation of α, β-unsaturated aldehyde (cinnamaldehyde, CAL) to the unsaturated alcohol (cinnamyl alcohol, COL) has been reported in a tube reactor coated with a Pt/SiO2 catalyst. A 90% selectivity towards the unsaturated alcohol was obtained at the aldehyde conversion of 98.8%. This is…
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialOil & gasPhase analysisPorous materialSAXSTechnique

Effects of calcination and activation conditions on ordered mesoporous carbon supported iron catalysts for production of lower olefins from synthesis gas

Oschatz, M.; Deelen, T. W. van; Weber, J. L.; Lamme, W. S.; Wang, G.; Goderis, B.; Verkinderen, O.; Dugulan, A. I.; Jong, K. P. de

Lower C2–C4 olefins are important commodity chemicals usually produced by steam cracking of naphtha or fluid catalytic cracking of vacuum gas oil. The Fischer–Tropsch synthesis of lower olefins (FTO) with iron-based catalysts uses synthesis gas as an alternative feedstock. Nanostructured carbon materials are widely applied as supports for the iron…
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialParticle size and size distributionPore size and pore size distributionPorous materialSAXSTechnique

Photocatalytic degradation of bisphenol A induced by dense nanocavities inside aligned 2D-TiO2 nanostructures

Bakardjieva, Snejana; Fajgar, Radek; Jakubec, Ivo; Koci, Eva; Zhigunov, Alexander; Chatzisymeon, Efthalia; Davididou, Konstantina

The preparation of materials with aligned porosity in the nanometer range is of technological importance for a wide range of applications in molecular filtration, biomaterials and catalysis. Herein we present the advantages offered by cryo – lyophilisation technique as a smart and green non-standard concept to produce dense regular polyhedral…
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialsMaterialMetalsNanoparticles & colloidsParticle size and size distributionParticlesPorous materialSAXSTechnique

Investigating Particle Size Effects in Catalysis by Applying a Size-Controlled and Surfactant-Free Synthesis of Colloidal Nanoparticles in Alkaline Ethylene Glycol: Case Study of the Oxygen Reduction Reaction on Pt

Quinson, Jonathan; Inaba, Masanori; Neumann, Sarah; Swane, Andreas A.; Bucher, J.; Simonsen, Søren B.; Theil Kuhn, Luise; Kirkensgaard, Jacob J. K.; Jensen, Kirsten M. Ø.; Oezaslan, Mehtap; Kunz, Sebastian; Arenz, Matthias

Colloidal platinum nanoparticles are obtained via a surfactant-free polyol process in alkaline ethylene glycol. In this popular synthesis, ethylene glycol functions as solvent and reducing agent. The preparation procedure is known for its reproducibility to obtain 1–2 nm nanoparticles, but at the same time the controlled preparation of larger nanoparticles…
12 March 2019