Chemical Technology
Article | July 20, 2022
Intelligent Operations can play a vital role in creating connected content environments, however, many companies – especially within oil and gas – having been slow on the uptake.
Businesses that implement digital transformation initiatives often gain a competitive advantage over their rivals, as they benefit from reductions in human error, increases in productivity and further support for compliance efforts.
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Chemical Technology
Article | June 6, 2022
“At Anglo-American, we’re really focused on finding the
best ways to attract the most talented people in the
industry and effectively equipping our existing workforce
based on what they need today and what the future
will mean for their careers. We’re also committed to
providing learning opportunities that lead to growth and
development in the communities in which we operate.
Our people are a strategic advantage. We want to
ensure that continues to be the case as the mining industry
evolves and faces more disruption.
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Chemical Management
Article | July 13, 2021
BUYERS OF polypropylene (PP) and other polymers and petrochemicals have had an incredibly difficult pandemic.
Firstly, the converters and brand owners expected doom and gloom last March. At the time it seemed logical to expect a cratering of demand as the global economy pretty much imploded.
Just looking at forecasts for GDP, parallels were drawn with the Global Financial Crisis when collapses in growth led to a cratering of polymers demand. The US is a good example where PP demand declined by 12% in 2008 over 2007. Demand then fell by a further 5% in 2009 over 2008.But what we all missed was the complete dislocation of polymers and petrochemicals demand from GDP. As economies registered historic declines, consumption went up.
PP demand went through the roof, firstly for food packaging and hygiene applications.Then consumption for the durable goods made from PP also smashed through the rafters as we bought white goods (PP is used to make components of washing machines), consumer electronics (PP is used to make some electronic components) and carpets (PP fibres are used here).
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Chemical Technology
Article | June 6, 2022
An enzyme-mimicking catalyst opens a new route to important organic molecules such as glycolic acid and amino acids from pyruvate, report researchers in Japan. Moreover, the new catalyst is cheaper, more stable, safer and more environmentally friendly than conventional metal catalysts used in industry, they note, adding that it also displays the high enantioselectivity required by the pharmaceutical industry.
“On top of these advantages, our newly developed organic catalyst system also promotes reactions using pyruvate that aren’t easily achievable using metal catalysts,” says Santanu Mondal, a PhD candidate in the chemistry and chemical bioengineering unit at Okinawa Institute of Science and Technology (OIST) Graduate University, Okinawa, Japan, and lead author of a study recently published in Organic Letters.
“Organic catalysts, in particular, are set to revolutionize the industry and make chemistry more sustainable,” he stresses.
The researchers use an acid and an amine mixture to force the pyruvate to act as an electron donor rather than its usual role as an electron receiver (Figure 1).
Effectively mimicking how enzymes work, the amine binds to the pyruvate to make an intermediate molecule. The organic acid then covers up part of the intermediate molecule while leaving another part that can donate electrons free to react to form a new product.
Currently, the organic catalyst system only works when reacting pyruvate with a specific class of organic molecule called cyclic imines.
So, the researchers now are looking to develop a more-universal catalyst, i.e., one that can speed up reactions between pyruvate and a broad range of organic molecules.
The challenge here is to try to make the electron-donating intermediate stage of pyruvate react with other functional groups such as aldehydes and ketones. However, different catalysts create different intermediates, all with different properties. For example, the enamine intermediate created by the researchers’ new reaction only reacts with cyclic imines. Their hypothesis, currently being investigated, is that creation of other intermediates such as an enolate, if possible, would achieve a broader pyruvate reactivity.
In terms of cost, the researchers note that a palladium catalyst used in similar reactions is 25 times more expensive than their organic acid — which also is made from eco-friendly quinine.
In addition, they believe scale-up of the process for industrial use definitely is possible. However, the researchers caution that the current amine-to-acid-catalyst loading ratio of 1:2 probably would need to be optimized for better results at a larger scale.
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