Welcome to the first issue of the Johnson Matthey Technology Review, the new name for Johnson Matthey's peer-reviewed scientific journal which continues to build on the 58 years of heritage accrued by Platinum Metals Review. Johnson Matthey and Sustainability Johnson Matthey has a strong focus on sustainability, which underpins our commercial activities in manufacturing products which help...
EMISSION CONTROL TECHNOLOGIES Kinetic Evaluation of Direct NO Decomposition and NO-CO Reaction over Dendrimer-derived Bimetallic Ir-Au/Al2O3 Catalysts Y.-J. Song, Y. M. López-De Jesús, P. T. Fanson and C. T. Williams, Appl. Catal. B: Environ., 2014, 154–155, 62 LINK http://dx.doi.org/10.1016/j.apcatb.2014.01.065 The performance of a dendrimer-derived bimetallic Au-Ir catalyst for the...
Bacterial cellulose (BC) has attracted much research interest, delivering a combination of exclusive properties, such as flexibility, hydrophilicity, crystallinity and a three-dimensional network. In this study, the effects of carbon source and cultivation conditions on BC production by the bacterium Acetobacter xylinum subsp. sucrofermentans DSM 15973 were assessed. Fructose was the most suitable carbon source and high BC concentrations up to 31 g l–1 were achieved in substrates with 60 g l–1 fructose under static culture conditions. Notably, BC production was equally high under the same fermentation conditions in agitated cultures (~30 g l–1). Moreover, the effectiveness of sodium hydroxide and sodium hypochlorite solutions in BC purification and their potential impact on BC structure and properties were explored. The combination of weak NaOH and NaOCl proved an effective purification method, preserving the fibre structure and crystallinity of BC.
Quantitative thermal imaging, the measurement of temperature by use of thermal imaging devices, is reviewed here from a metrological perspective with a focus on measurement confidence and system application to fields such as condition monitoring and healthcare diagnostics. Thermal imaging has seen greatly increased application for the measurement of temperature following dramatic improvements in practicality and price. Selected thermal imaging systems are reviewed here by providing some example measurements outputs from devices, highlighting their outcomes on measurement confidence and impact on practical use, such as in condition monitoring and healthcare diagnostics.
Toward Reversible and Moisture-Tolerant Aprotic Lithium-Air Batteries I. Temprano, T. Liu, E. Petrucco, J. H. J. Ellison, G. Kim, E. Jónsson and C. P. Grey, Joule, 2020, 4, (11), 2501 LINK https://doi.org/10.1016/j.joule.2020.09.021 In this study, reversable LiOH-based lithium-oxygen battery cycling was exhibited after introducing an ionic liquid to a DME-based electrolyte containing water...
Steam Reforming of Hydrocarbons for Synthesis Gas Production M. Fowles and M. Carlsson, Top. Catal., 2021, 64, 856 LINK https://doi.org/10.1007/s11244-021-01496-z This article is dedicated to the career of Mike Spencer. It describes the process and history of steam reforming for the production of synthesis gas (syngas) for manufacture of ammonia and methanol. The history of the development...
Pore-Scale Filtration Model for Coated Catalytic Filters in Automotive Exhaust Gas Aftertreatment M. Plachá, P. Kočí, M. Isoz, M. Svoboda, E. Price, D. Thompsett, K. Kallis and A. Tsolakis, Chem. Eng. Sci., 2020, 226, 115854 LINK https://doi.org/10.1016/j.ces.2020.115854 This paper reviews the filtration efficiency of automotive exhaust gas filters with the impact of catalyst distribution....
EMISSION CONTROL TECHNOLOGIES Is Reactor Light-Off Data Sufficiently Discriminating Between Kinetic Parameters to be Used for Developing Kinetic Models of Automotive Exhaust Aftertreatment Catalysts? The Effect of Hysteresis Induced by Strong Self Inhibition J. E. Etheridge and T. C. Watling, Chem. Eng. J., 2015, 264, 376 LINK http://dx.doi.org/10.1016/j.cej.2014.11.089 Kinetic parameters...
The Biotechnology and Biological Sciences Research Council (BBSRC) funded six Networks in Industrial Biotechnology and Bioenergy (NIBB) for a second phase in 2019 and previously 13 BBSRC NIBB for a first phase in 2014. These networks promote interactions between academia and industry to advance research along the technology readiness levels (TRLs). The networks fund collaborations that start in the region of TRL2 and Johnson Matthey contributes to the management of one of these BBSRC NIBB entitled ‘The Elements of Bioremediation, Bio-Manufacturing and Bioenergy (E3B)’. This network brings together communities working on metals in biology.
FINE CHEMICALS Stereoselective Synthesis of the Halaven C14-C26 Fragment from D-Quinic Acid: Crystallization-Induced Diastereoselective Transformation of an α-Methyl Nitrile F. Belanger, C. E. Chase, A. Endo, F. G. Fang, J. Li, S. R. Mathieu, A. Z. Wilcoxen and H. Zhang, Angew. Chem. Int. Ed., 2015, 54, (17), 5108 LINK http://dx.doi.org/10.1002/anie.201501143 Total synthesis of the...
Since cave ecosystems have extraordinary environmental conditions, these ecosystems offer opportunities for microbiological studies. In this study, cultivable bacteria isolated from Parsık cave, Turkey, were investigated regarding enzyme profiles, antibiotic resistance and potential for production of antimicrobial agents. The metabolic properties of 321 bacterial isolates were determined. The most produced enzyme by the isolates was found to be tyrosine arylamidase. The enzymatic reactions of the bacteria showed that Parsık cave isolates have high aminopeptidase activity. The highest antibiotic resistance frequency of the isolates was 38.6% against ampicillin. While the isolates displayed variable inhibition rates against tested pathogenic microorganisms, they showed the highest inhibition against Candida albicans. The results show that the bacteria isolated from Parsık cave have potential for further studies related to biotechnological applications. The study findings contribute increased knowledge on metabolic peculiarities of bacteria isolated from cave ecosystems.
Brazing Filler Metals M. Way, J. Willingham and R. Goodall, Int. Mater. Rev., 2020, 65, (5), 257 LINK https://doi.org/10.1080/09506608.2019.1613311 Brazing is a joining technique that is more than 5000 years old. It is a versatile technique that is still fundamental to some of the biggest engineering challenges faced today. The ability to join dissimilar material combinations (for example,...
Patents are a key source of technical and commercial intelligence, as described in a previous article in this Journal (1). Osmium is often seen as the forgotten member of the platinum group metals, but nevertheless still attracts interest (2, 3). Modern software allows us not only to search out patents relating to osmium, but also to visualise the search results. The landscapes, (Figures 1...
