Sunlight used to convert plastics into useful chemical

Scientists here have developed a way to convert plastic waste into useful chemicals using sunlight. This is the first reported process that can completely break down a non-biodegradable plastic such as polyethylene using visible light and a catalyst that does not contain heavy metals, said Assistant Professor Soo Han Sen, 39, from Nanyang Technological University (NTU). His team from the School of Physical and Mathematical Sciences created a catalyst that harnesses light energy, such as sunlight, to break down chemical bonds in plastics within days. This photochemical reaction is more environmentally friendly than most recycling methods, which involve heating, generating greenhouse gases as a by-product, said Prof Soo.

Spotlight

PT. Asahimas Chemical

ASC manufactures basic chemicals utilized by a host of downstream industries: Caustic Soda (NaOH), Ethylene Dichloride (EDC), Vinyl Chloride Monomer (VCM), Polyvinyl Chloride (PVC), Hydrochloric Acid (HCl) and Sodium Hypochlorite (NaClO).

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Chemical Technology

Reimagining the Workforce with Anglo American

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 Technology

Organic Catalyst Boasts Big Benefits

Article | July 20, 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 Management

The multi-million dollar polymers opportunity: continued big regional price differentials

Article | July 8, 2022

POLYMER BUYERS outside northeast (NEA) and southeast Asia (SEA) have a big opportunity to save millions of dollars on procurement costs during the rest of this year through purchasing more from the two regions.The opportunity has arisen because I believe that NEA and SEA polymer prices will remain very cheap relative to most of the world until at least the end of 2021. NEA comprises China, Japan, Taiwan and South Korea. Our definition of the SEA region is Cambodia, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam.NEA and SEA producers can also make a lot of money by constantly monitoring and acting on strong arbitrage opportunities in other regions. As supply disruptions in the US look likely to continue, Europe and South & Central America seem particularly good opportunities for both buyers and producers.Before we discuss why I see NEA and SEA remaining cheap relative to most of the rest of the world until at least the end of the year, let us consider in more detail the size of the prize, starting with the resin buyers.

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Chemical Management

Pandemic’s third wave seems unlikely to damage global petrochemicals demand

Article | July 22, 2021

Petrochemical stocks plunged worldwide on 19 July ahead of the Q2 earnings season. The declines were consistent with those in economically sensitive sectors such as steel, copper, automotive and housing,” wrote my ICIS colleague, Joseph Chang, in this Insight article.

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Spotlight

PT. Asahimas Chemical

ASC manufactures basic chemicals utilized by a host of downstream industries: Caustic Soda (NaOH), Ethylene Dichloride (EDC), Vinyl Chloride Monomer (VCM), Polyvinyl Chloride (PVC), Hydrochloric Acid (HCl) and Sodium Hypochlorite (NaClO).

Related News

NGOs file suit over transparency of TSCA new chemicals programme

Chemical Watch | March 18, 2020

A coalition of NGOs has sued the US EPA over an alleged lack of transparency in the TSCA new chemicals programme, which "thwart[s] the ability of the public to be informed and to provide input". According to a complaint filed by five environmental nonprofits in federal court today, the EPA has operated its TSCA premanufacture review process in a "black box, denying the public information to which they are legally entitled". Having access to timely information, they contend, is necessary to ensure the members they represent "are able to provide input on the potential risks of new chemicals and the need for protections from those risks prior to completion of EPA’s reviews." And they therefore have asked the court to ensure that the EPA complies with TSCA’s disclosure provisions, including by requiring that it:

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ACC to Trump, governors: Keep chemical industry going during coronavirus crisis

S&P Global | March 18, 2020

The US chemical industry's trade group told President Donald Trump and state governors this week that its sector must maintain operations as the coronavirus outbreak spreads to ensure supply of chemicals needed for disinfectants, plastics for food preservation and medical equipment, and staples like diapers and soap. "The role of chemistry is particularly important today, as chemicals enable countless products that will be needed to support good hygiene and treat those who are infected with the coronavirus in the weeks and months ahead," American Chemistry Council President and CEO Chris Jahn said in a letter to Trump and governors late Tuesday. Efforts to hinder the spread of coronavirus have included cancellations of major sporting events, concerts, conferences, parades, and other large gatherings, as well as closures of bars and limiting restaurants to takeout and deliveries. Companies have increasingly sent employees to work from their homes, while hospitals, grocery stores, and drug stores work to keep up with demand for care and products.

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How small chemical company leaders are dealing with the coronavirus

C&EN | March 17, 2020

As measures to contain the coronavirus—SARS-CoV-2—sweep across the US, the heads of privately owned chemical and instrument companies find themselves in uncharted territory trying to keep their companies going and their employees safe. C&EN reached out to CEOs of several such firms to learn what they are doing to keep business moving forward. We heard stories about setbacks, as expected supplies didn’t come through, but also small triumphs, as needed safety equipment was finally found. Overall, these leaders are keeping a close eye on supplies while planning for the real possibility that orders will drop in the coming months. Keeping staff healthy and maintaining continuity in customer service are the top priorities at Boron Specialties. “We are a pretty small facility, seven people &on-site&, so as best as we can we’re isolating,” CEO and founder Beth Bosley says.

Read More

NGOs file suit over transparency of TSCA new chemicals programme

Chemical Watch | March 18, 2020

A coalition of NGOs has sued the US EPA over an alleged lack of transparency in the TSCA new chemicals programme, which "thwart[s] the ability of the public to be informed and to provide input". According to a complaint filed by five environmental nonprofits in federal court today, the EPA has operated its TSCA premanufacture review process in a "black box, denying the public information to which they are legally entitled". Having access to timely information, they contend, is necessary to ensure the members they represent "are able to provide input on the potential risks of new chemicals and the need for protections from those risks prior to completion of EPA’s reviews." And they therefore have asked the court to ensure that the EPA complies with TSCA’s disclosure provisions, including by requiring that it:

Read More

ACC to Trump, governors: Keep chemical industry going during coronavirus crisis

S&P Global | March 18, 2020

The US chemical industry's trade group told President Donald Trump and state governors this week that its sector must maintain operations as the coronavirus outbreak spreads to ensure supply of chemicals needed for disinfectants, plastics for food preservation and medical equipment, and staples like diapers and soap. "The role of chemistry is particularly important today, as chemicals enable countless products that will be needed to support good hygiene and treat those who are infected with the coronavirus in the weeks and months ahead," American Chemistry Council President and CEO Chris Jahn said in a letter to Trump and governors late Tuesday. Efforts to hinder the spread of coronavirus have included cancellations of major sporting events, concerts, conferences, parades, and other large gatherings, as well as closures of bars and limiting restaurants to takeout and deliveries. Companies have increasingly sent employees to work from their homes, while hospitals, grocery stores, and drug stores work to keep up with demand for care and products.

Read More

How small chemical company leaders are dealing with the coronavirus

C&EN | March 17, 2020

As measures to contain the coronavirus—SARS-CoV-2—sweep across the US, the heads of privately owned chemical and instrument companies find themselves in uncharted territory trying to keep their companies going and their employees safe. C&EN reached out to CEOs of several such firms to learn what they are doing to keep business moving forward. We heard stories about setbacks, as expected supplies didn’t come through, but also small triumphs, as needed safety equipment was finally found. Overall, these leaders are keeping a close eye on supplies while planning for the real possibility that orders will drop in the coming months. Keeping staff healthy and maintaining continuity in customer service are the top priorities at Boron Specialties. “We are a pretty small facility, seven people &on-site&, so as best as we can we’re isolating,” CEO and founder Beth Bosley says.

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