Chemical Technology
Article | July 14, 2022
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 Management
Article | July 14, 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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Chemical Technology
Article | June 6, 2022
BEFORE the pandemic, GDP growth rates in the developing world were always higher than in developed economies.And because developing economies had much lower levels of petrochemicals consumption than their rich counterparts, it meant that the multiples over GDP were higher than in the rich word, where consumption was pretty much saturated.
For instance, polyethylene (PE) demand in a developed country such as Germany might have grown at 0.3% times GDP whereas in Indonesia the growth could have been one or more times higher than the rate of growth in GDP.But as The Economist wrote in this 11 July article: “In 2021 the poorest countries, which are desperately short of vaccines, are forecast to grow more slowly than rich countries for only the third time in 25 years.”
Might the multiples over GDP growth also be adversely affected in the developing world, trending lower than the historic norms?
They will almost certainly remain higher than the rich countries. But here is the thing: as millions more people are pushed back into extreme poverty by the pandemic or are denied the opportunity to achieve middle-income status, I believe that developing-world multiples may well decline.Escaping extreme poverty means being able to, say, afford a whole bottle of shampoo for the first time rather than a single-serve sachet, thereby raising per capita polymers consumption.
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Chemical Management
Article | May 1, 2021
MAY 2021 ///Vol 242 No. 5
FEATURES
Developing pre-rig solutions that are greener, safer and more efficient
There is an increased focus in the oil and gas sector to look further afield to opportunities presented in deepwater locations. Because of this, finding cost-efficient solutions and overcoming the associated challenges that arise below 1,000 ft will be vital for the success of new activity.
Jostein Aleksandersen, Neodrill
There is an increased focus in the oil and gas sector to look further afield to opportunities presented in deepwater locations. Because of this, finding cost-efficient solutions and overcoming the associated challenges that arise below 1,000 ft will be vital for the success of new activity.
All those currently—and those considering—operating in deepwater fields will have an awareness of the general challenges that are presented at such depths. From considerations relating to vast increases in pressure, to the potential for increased drilling time and days spent offshore, there are several hurdles that follow when operating in what are often challenging well environments. In addition, suitable solutions also must support the industry drive to reduce emissions by offering a more carbon-efficient approach.
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