source:acsBy using a molecular “glue” to hold atoms in place, researchers have come up with a method that disperses individual metal atoms across a solid surface and prevents them from coalescing. The advance may lead to practical procedures for making commercial catalysts that maximize use of expensive metals such as platinum.Many industrial-scale chemical processes are driven by solid catalysts consisting of tiny chunks of a noble metal such as platinum or rhodium dispersed on a solid support—often a metal oxide. Known as heterogeneous catalysts because the catalytic material is solid and th...
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2022
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source:americanrecycler“Metal is a reusable and valuable resource. It’s important to recycle metal not only for the environmental and economic impact, but also to prevent metal being present in ground water supply,” said Mikel Shecht, executive vice president, Geomet Recycling. “We take the mandatory steps and have processes in place to ensure that the waste our facilities produce is properly disposed to lower the impact on community landfills and the environment at large. Like many other industries, the technology used in waste facilities is evolving quickly.”Geomet Recycling, for example, re...
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2022
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source:phys.orgA team of researchers at Shanghai Jiao Tong University, working with a pair of colleagues from Harvard University, has developed a new way to synthesize single quantum nanomagnets that are based on metal-free, multi-porphyrin systems. In their paper published in the journal Nature Chemistry, the group describes their method and possible uses for it.Molecular magnets are materials that are capable of exhibiting ferromagnetism. They are different from other magnets because their building blocks are composed of organic molecules or a combination of coordination compounds. Chemists ...
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2022
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Research on equivalent thermal network modeling for rare-earth giant magnetostrictive transducer source:natureAbstractOf crucial importance for giant magnetostrictive transducers (GMTs) design is to quickly and accurately analysis the temperature distribution. With the advantages of low calculation cost and high accuracy, thermal network modelling has been developed for thermal analysis of GMT. However, the existing thermal models have their limits to describe these complicated thermal behaviors in the GMTs: most of researches focused on steady-state which is incapable of capturing temper...
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2022
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