Can we trust current food security systems and are they sustainable? Some of the specialists involved in the revision of ISO 22000 explain why the new version of the standard is a timely response, for…

The accurate and precise characterisation of disordered, mesoporous solids continues to be an ongoing challenge due to the high level of complexity of such materials. Common, indirect methods, such as gas sorption and mercury porosimetry, still offer relatively cheap, and, most importantly, statistically representative characterisations of macroscopic samples. This work reviews and expands upon recent developments aimed at increasing, and cross-validating, the information obtained from such methods. This involves developing a better understanding of the pore-pore co-operative effects that emerge only in extensive, disordered pore networks to better interpret raw characterisation data, and to use these effects to deliver more information on the void space. This work also describes novel hybrid methods that also greatly increase the information that indirect methods can deliver on complex mesoporous solids.

The post Recent Developments in the Structural Characterisation of Disordered, Mesoporous Solids appeared first on Johnson Matthey Technology Review.

Improving safety is a key objective of most industries and boosting the quality of the products and services that contribute to safety is necessary to achieve it. The nuclear sector is set to benefit with…

To celebrate World Standards Day, IEC (International Electrotechnical Commission), ISO (International Organization for Standardization) and ITU (International Telecommunication Union) are organizing a…

When the topic of energy efficiency comes up, energy-efficient machine tools don’t immediately spring to mind. Yet machine tools contain motors and auxiliary components whose energy demand varies widely…

A common expectation of improved safety in almost all aspects of our lives, from safer workplaces, to safer consumer products and food, highlights an important role for accreditation.

Consumer reviews play an increasingly strong role in purchasing decisions, but with a plethora of platforms and opinions, whose view can you trust? A new standard just published aims to put some order…

Plastic is an important material in our economy and daily lives. It has multiple functions that can help tackle a number of the challenges facing our society, be it packaging that ensures food safety and…

The understanding of location and accessibility of zeolite acid sites is a key issue in heterogeneous catalysis. This paper provides a brief overview of Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) characterisation of acidity in zeolites based on the application of test molecules with a diverse range of basicity and kinetic diameters….

The post Accessibility and Location of Acid Sites in Zeolites as Probed by Fourier Transform Infrared Spectroscopy and Magic Angle Spinning Nuclear Magnetic Resonance appeared first on Johnson Matthey Technology Review.

Dynamic nuclear polarisation (DNP) gives large (>100-fold) signal enhancements in solid-state nuclear magnetic resonance (solid-state NMR) spectra via the transfer of spin polarisation from unpaired electrons from radicals implanted in the sample. This means that the detailed information about local molecular environment available for bulk samples from solid-state NMR spectroscopy can now be obtained for…

The post Dynamic Nuclear Polarisation Enhanced Solid-State Nuclear Magnetic Resonance Studies of Surface Modification of γ-Alumina appeared first on Johnson Matthey Technology Review.