23 Jul 2014
The latest issue of Catalysis Science and Technology contains a themed collection on Sustainable catalytic conversions of renewable substrates. The issue was guest edited by Pieter C. A. Bruijnincx (Utrecht University) and Yuriy Román-Leshkov (Massachusetts Institute of Technology).
This issue contains contributions on topics related to catalytic biomass conversion methods, including homogeneous, heterogeneous and enzymatic processes. The themed issue will cover contributions concerned with chemical or chemical engineering aspects of the selective catalytic conversion of renewable feedstocks, for instance lignocellulosic biomass or its (hemi)cellulose or lignin components, or with the catalytic conversion of renewable platform molecules that can be derived from these feedstocks.
Here’s a small taster of the excellent content in this themed issue:
- Perspective: Transition metal-catalyzed oxidative double bond cleavage of simple and bio-derived alkenes and unsaturated fatty acids,
Peter Spannring, Pieter C. A. Bruijnincx, Bert. M. Weckhuysen and Robertus J. M. Klein Gebbink , DOI: 10.1039/C3CY01095C
- Perspective: A review of advanced catalyst development for Fischer–Tropsch synthesis of hydrocarbons from biomass derived syn-gas,
Hessam Jahangiri, James Bennett, Parvin Mahjoubi, Karen Wilson and Sai Gu, DOI: 10.1039/C4CY00327F
- Communication: Catalytic hydrosilylation of oxalic acid: chemoselective formation of functionalized C2-products,
Elias Feghali, Olivier Jacquet, Pierre Thuéry and Thibault Cantat, DOI: 10.1039/C4CY00339J
Check out the rest of the articles in this exciting and timely themed issue on the website now!
08 Jul 2014
Congratulations to the poster prize winners at NSC2014 (16th Nordic Symposium on Catalysis). Green Chemistry and Catalysis Science & Technology were pleased to sponsor a poster prize each at the symposium, which were awarded as follows:
Green Chemistry poster prize
awarded to Aron Dombovari, University of Oulu
for “Photocatalytic processing of algae”
Catalysis Science & Technology poster prize
awarded to Jacob O. Abildstrøm, Technical University of Denmark
for “Investigation of Mesoporous TS-1 for the Catalytic Formation of N-oxides”
The prize winners received a certificate and a book from Royal Society of Chemistry Books.
You can read more about the Poster Award and find out about the Nordic Symposium on the UiO website.
02 Jun 2014
Due to its sustainability appeal, carbon dioxide is gaining popularity as a feedstock for the synthesis of commercially-important chemicals, including fuels for energy applications. Methanol may be formed from carbon dioxide via water splitting with the assistance of photocatalysts. In this study, reverse photofuel cells incorporating tungsten oxide and layered double hydroxide (LDH) photocatalysts were used for the oxidation of water and the reduction of carbon dioxide, respectively. Two different fabrication designs were tested: in one cell, the catalysts were either used alone or mixed with carbon black; in the other, LDH was mounted on copper, tungsten oxide was mounted on carbon, and the photoelectrodes were immersed in hydrochloric acid solution.
The second cell outperformed the first in terms of the amount of photocurrent generated, since the transfer of protons across the Nafion film was more efficient in the acid solution. However, product selectivity differed between the two cells: gaseous carbon dioxide led to the preferential formation of methanol, whereas the second cell predominantly generated hydrogen due to the poor solubility of carbon dioxide in water.
The full paper is available here:
Photocatalytic conversion of carbon dioxide into methanol in reverse fuel cells with tungsten oxide and layered double hydroxide photocatalysts for solar fuel generation
Motoharu Morikawa, Yuta Ogura, Naveed Ahmed, Shogo Kawamura, Gaku Mikami, Seiji Okamoto, and Yasuo Izumi
Catal. Sci. Technol., 2014, Advance Article, DOI: 10.1039/C3CY00959A
Jenna Flogeras obtained her B.Sc. and M.Sc. in Chemistry from the University of New Brunswick (Fredericton), Canada. Currently a Ph.D. student at Memorial University of Newfoundland, she is excited to spend some time outside the laboratory this summer to explore Thailand and Southeast Asia.
22 Apr 2014
Take a look at the selection which are free to read for a short time:
Homogeneous catalysis for the conversion of biomass and biomass-derived platform chemicals
Peter J. Deuss, Katalin Barta and Johannes G. de Vries
DOI: 10.1039/C3CY01058A, Perspective
Highly active Cr(III) catalysts for the reaction of CO2 with epoxides
Sait Elmas, Muhammad A. Subhani, Marcus Harrer, Walter Leitner, Jörg Sundermeyer and Thomas E. Müller
DOI: 10.1039/C3CY01087B, Paper
Regioselective transformation of alkynes catalyzed by a copper hydride or boryl copper species
Tetsuaki Fujihara, Kazuhiko Semba, Jun Terao and Yasushi Tsuji
DOI: 10.1039/C4CY00070F, Perspective
17 Apr 2014
The latest issue of CS&T is now online. You can read the full issue here.
The outside front cover features the paper Deactivation studies of a carbon supported AuPt nanoparticulate catalyst in the liquid-phase aerobic oxidation of 1,2-propanediol by Carmine D’Agostino, Yulia Ryabenkova, Peter J. Miedziak, Stuart H. Taylor, Graham J. Hutchings, Lynn F. Gladden and Mick D. Mantle.
The authors gave the following explanation of their cover image: ‘This hand-made drawing represents the essence of our article. There are fishes (reactant molecules) that swim under water (the solvent for the reaction), in marine caves (porous catalyst matrix) looking for pots of gold and platinum (the active components of the catalyst). A cave is accessible (the catalyst mesopores) despite the presence of obstacles (the deposits formed during the reaction) and the smiling fishes rush happily towards the precious metal pots! The other cave (the micropores of the catalyst) is much narrower and the path is blocked by the deposits. What a pity for the fishes, who are unable to access the precious metal pots, showing disappointed faces!’
The drawing was made in collaboration with Chen Xi, a Cambridge local artist whose other works can be seen at: http://chenxi.carbonmade.com/about
Homogeneous catalysis for the conversion of biomass and biomass-derived platform chemicals is the paper highlighted on the inside front cover by Peter J. Deuss, Katalin Barta* and Johannes G. de Vries.
Issue 5 contains a number of excellent Mini-review articles:
Role of microwaves in heterogeneous catalytic systems
Satoshi Horikoshi* and Nick Serpone
Solar photocatalysis for water disinfection: materials and reactor design
Donal A. Keane, Kevin G. McGuigan, Pilar Fernández Ibáñez, M. Inmaculada Polo-López, J. Anthony Byrne, Patrick S. M. Dunlop, Kevin O’Shea, Dionysios D. Dionysiou and Suresh C. Pillai
17 Apr 2014
The third FineCat – Symposium on heterogeneous catalysis for fine chemicals was held in Palermo, Italy, on April 2-3, 2014 in the splendid venue of the Steri Palace. The Symposium ended late in the evening of April 3rd with a spectacular social dinner at the Tasca d’Almerita estate, following the guided tour of the 1,000 years old Steri Palace the day before.
The scientific program featured 12 symposia and 11 poster presentations that highlighted practically relevant chemical innovation in fields as diverse as flow catalysis, catalysis with metal “Lego” nanoparticles, photocatalysis and biomass catalytic valorization. Fine chemicals — polyfunctional molecules with specific properties imparting them high added value — have traditionally been synthesized via selective homogeneous synthetic methods. All this is now changing as newly developed heterogeneous catalysis emerges as a convenient industrial tool capable to make the fine chemicals industry not only environmentally, but also economically, more sustainable. Delegates from Slovenia, Thailand, Canada, UK, Italy and Germany showed once again the truly international nature of this Symposium series inaugurated in 2012.
A Catalysis Science & Technology post prize was awarded to Maria Luisa Testa for her poster concerning he use of acid hybrid silicas in esterification reactions, awarding one year’s personal e-subscription to Catalysis Science & Technology. The Prize was offered by RSC Publishing, partnering with the organizers since the very first FineCat symposium.
Read more about the conference here.
11 Apr 2014
Reactions that utilize carbon dioxide are widely studied for their potential role in climate change mitigation. Symmetrical aluminium salen complexes are well known for their ability to catalyze reactions of carbon dioxide with epoxides, producing commercially valuable cyclic carbonates or polycarbonates. Aluminium complexes based on an unsymmetrical coordination environment, however, have not yet been explored for the cycloaddition reaction. This research represents the first catalyst study incorporating a hybrid salen-acetylacetonate ligand, using styrene oxide as a substrate.
The University of Sheffield researchers discovered that the catalyst achieves 70% conversion to styrene carbonate at atmospheric pressure and elevated temperatures. When used in conjunction with tetrabutylammonium bromide (TBAB) in dichloromethane, this value reaches 90%. Moreover, TBAB alone catalyzes the reaction in yields comparable to the aluminium catalyst.
The full paper can be read here:
A single centre aluminium(III) catalyst and TBAB as an ionic organo-catalyst for the homogeneous catalytic synthesis of styrene carbonate
Somsak Supasitmongkol and Peter Styring
Catal. Sci. Technol. 2014, Advance Article, DOI: 10.1039/C3CY01015E
Jenna Flogeras obtained her B.Sc. and M.Sc. in Chemistry from the University of New Brunswick (Fredericton), Canada. She is currently working towards her Ph.D. at Memorial University of Newfoundland, under the supervision of Dr. Francesca Kerton. Her research is focused on the synthesis of biodegradable polymers using main-group metal complexes as catalysts.