scholarly journals Oxidase enzymes as sustainable oxidation catalysts

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Alice J. C. Wahart ◽  
Jessica Staniland ◽  
Gavin J. Miller ◽  
Sebastian C. Cosgrove

Oxidation is one of the most important processes used by the chemical industry. However, many of the methods that are used pose significant sustainability and environmental issues. Biocatalytic oxidation offers an alternative to these methods, with a now significant enzymatic oxidation toolbox on offer to chemists. Oxidases are one of these options, and as they only depend on molecular oxygen as a terminal oxidant offer perfect atom economy alongside the selectivity benefits afforded by enzymes. This review will focus on examples of oxidase biocatalysts that have been used for the sustainable production of important molecules and highlight some important processes that have been significantly improved through the use of oxidases. It will also consider emerging classes of oxidases, and how they might fit in a future biorefinery approach for the sustainable production of important chemicals.

Author(s):  
Artem S. Belousov ◽  
Anton Esipovich ◽  
Evgeny Kanakov ◽  
Ksenia V. Otopkova

Living in the time of the most heighten environmental issues, humanity should take care about the future. Green Chemistry provides a broad range of possibilities for researchers to design of...


Author(s):  
Rajarathinam Ravikumar ◽  
Muthuvelu Kirupa Sankar ◽  
Manickam Nareshkumar ◽  
Moorthy Ranjithkumar

Química Nova ◽  
2021 ◽  
Author(s):  
Suellen Alves

CHEMICALS AND THE ENVIRONMENT: HISTORICAL ASPECTS AND THE CONTRIBUTIONS OF ENVIRONMENTAL MANAGEMENT TEACHING. Global environmental issues have gained strength since the 1960 decade and the relationship between the chemical industry and the environment has become increasingly tight since then. In this sense, environmental management has gained more space making organizations think strategically about their business and the possible impacts that they can promote on the environment. The present paper shows two brief timelines: the history of the chemical industry and the important events for environmental issues. In addition, it reports an investigation into the insertion of the discipline of environmental management in curricular matrices of institutions in Paraná and didactic experiments carried out at the State University of Ponta Grossa: simulation of environmental audit and analysis of the environmental management of the chemistry teaching laboratories of that institution a from the survey of environmental aspects and impacts and the elaboration of the environmental risk index. Finally, a questionnaire is shown with the graduates who took the discipline and how they perceive the importance of it in professional life. The reflection on social and environmental responsibility is extremely important for sustainable development and the chemist has a leading role in this path.


Author(s):  
Jingpei Huo ◽  
Shu-ni Wang ◽  
Yongpeng Liang ◽  
Xiaohong Hu ◽  
Qianjun Deng ◽  
...  

Organic compounds that contain poly-triazole are very important intermediates in pharmaceutical and chemical industry. Click chemistry is one of essential reactions that can form C-N bond with high atom economy. The research progress in metals catalyzed Click chemistry of azides and alkynes from the perspective of reaction mechanism is categorized and summarized.


Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 479 ◽  
Author(s):  
Erivaldo J.C. Lopes ◽  
Ana P.C. Ribeiro ◽  
Luísa M.D.R.S. Martins

This work concerns recent advances (mainly in the last five years) in the challenging conversion of carbon dioxide (CO2) into fine chemicals, in particular to cyclic carbonates, as a meaningful measure to reduce CO2 emissions in the atmosphere and subsequent global warming effects. Thus, efficient catalysts and catalytic processes developed to convert CO2 into different chemicals towards a more sustainable chemical industry are addressed. Cyclic carbonates can be produced by different routes that directly, or indirectly, use carbon dioxide. Thus, recent findings on CO2 cycloaddition to epoxides as well as on its reaction with diols are reviewed. In addition, indirect sources of carbon dioxide, such as urea, considered a sustainable process with high atom economy, are also discussed. Reaction mechanisms for the transformations involved are also presented.


2019 ◽  
Vol 11 (6) ◽  
pp. 1533 ◽  
Author(s):  
Lizhong Tong ◽  
Zhongmin Pu ◽  
Jizheng Ma

Chemical industry plays a pivotal role in the economy in every country. As chemical hazardous materials are usually characterized as inflammable, explosive, toxic, corrosive, and carcinogenic, if accidents happen in chemical company it can lead to irreversible environmental and health damage to the public. The chemical industry attaches great importance to safe production, technical professionalism, and service standardization. Nowadays, under the trend of equipment maintenance service outsourcing in chemical companies, the selection of maintenance suppliers with safe and sustainable records come first and foremost in the supplier selection process. However, these concerns from the chemical industry are currently inadequately addressed by most general supplier selection models. Therefore, this paper proposes an applicable methodology for selecting and evaluating equipment maintenance suppliers in the chemical industry, compatible with a safe and sustainable production context. To achieve the goal of “safe operation and sustainable development in the future”, we established an evaluation criteria framework for equipment maintenance suppliers by combining the general supplier selection criteria and safe production characteristics together. Eight main criteria and 24 sub-criteria based on market acceptance, resource conditions, and safe production were included. Then a fuzzy TOPSIS model was presented to select the best equipment maintenance service supplier. Finally, by analyzing a case in W petrochemical company, the empirical results indicate that the proposed framework is of great practical value to select and evaluate equipment maintenance suppliers for safety and sustainable development in the chemical industry.


2020 ◽  
Vol 12 (12) ◽  
pp. 5141
Author(s):  
Pavla Svermova ◽  
Miroslav Cernik

The chemical industry is a particularly sensitive sector that very often works with toxic, harmful and dangerous substances. This paper offers insight into the corporate socially responsible (CSR) behaviour of a specific segment of the chemical industry—the production of fluorinated ski waxes. Perfluorinated compounds, which excel in water and fat stability and repellency, are nowadays considered as harmful to human health and nature. During 2020, the basic compound, perfluorooctanoic acid (PFOA), will be banned, and finding its replacement will be a difficult task. So far, there are no alternatives in terms of environmentally friendly compounds that can maintain the desired properties of extreme ski glide. Based on a questionnaire distributed to twenty wax producers worldwide, we have concluded that, although the attitudes of companies towards CSR certification was rather negative (87.5%), and companies had not developed or documented any CSR policy/strategy with specific goals, they found CSR activities/instruments beneficial and important. The survey highlighted the fact that companies were aware that their products are dangerous for the environment, and that environmental issues are important for all of the responders, despite them being mostly without certified systems. The size of a company had no significant effect on their attitude. Micro and small producers were involved in raising awareness of environmental policies and responsibilities to the same extent (maybe even more) as medium or large companies. We also found varying behaviours between companies involved in environmental programs and those who were not. The companies involved felt a strong attitude towards all three pillars of CSR, which are the environment, as well as social and economic aspects. Those companies not involved had a strong attitude towards their customers, but not towards their employees, suppliers or the wider community. They also had stronger feelings about the quality of their products and economic profit, but without a strong approach to the related environmental issues. The Norwegian approach and the commitment of the company Swix to CSR are two positive examples leading to a fluorine-free future.


2019 ◽  
Vol 44 (5-6) ◽  
pp. 267-270
Author(s):  
Ming-Fang Li ◽  
Jian Wang ◽  
Yong-Xin Ke ◽  
Song-Cheng Pan ◽  
Hong Yin ◽  
...  

An aerobic oxidative bromination of anilines and aryl ketones catalyzed by recyclable 2-methylpyridinium nitrate ionic liquid is achieved in water using hydrobromic acid as the bromine source and molecular oxygen as the oxidant. The catalytic system shows good efficiency and atom economy.


Exacta ◽  
2020 ◽  
Vol 18 (3) ◽  
pp. 583-602
Author(s):  
Roberta Souza ◽  
Mayara Sayuri Ide ◽  
Gabriela Scur ◽  
Willerson Lucas Campos-Silva ◽  
Sangeeta Khorana

Sustainable procurement requires an understanding of the full impact of purchase throughout the entire life cycle of the product or service, irrespective of location. The aim is to investigate the adoption of sustainable procurement in some Brazilian chemical companies. Questionnaires were sent to professionals from the Brazilian Chemical Industry Association (ABIQUIM) and from thirty-seven associated companies. The results were used to elaborate empirical illustrations about sustainable procurement practices in the Brazilian chemical industry context. Although the companies did not have a prescriptive supplier selection model that incorporates social-environmental criteria, most companies had more restrictive standards than the legislation and they supported suppliers to improve their social-environmental performance. In addition, that actions related to social and environmental issues occur in policies and documents and are reflected through middle and upper management commitments. It indicates that there are some organizational directions to incorporate social and environmental questions. However, no materialization in actions along the procurement process.


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