Nature Chemical Engineering最新文献_第10页

Integrating industrial sectors in the transition to more sustainable chemicals 整合工业部门，向更可持续的化学品过渡

Nature Chemical Engineering Pub Date : 2024-05-02 DOI: 10.1038/s44286-024-00067-9

Gonzalo Guillén-Gosálbez, Lucas Francisco dos Santos

引用次数: 0

The short- and long-run environmental value of waste conversion 废物转化的短期和长期环境价值

Nature Chemical Engineering Pub Date : 2024-04-30 DOI: 10.1038/s44286-024-00060-2

Corinne D. Scown

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A changing paradigm in industrial pharmaceutical crystallization 不断变化的工业制药结晶模式

Nature Chemical Engineering Pub Date : 2024-04-29 DOI: 10.1038/s44286-024-00068-8

Stefani Kocevska, Christopher L. Burcham, Fredrik Nordstrom, Giovanni Maria Maggioni

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Co-production of steel and chemicals to mitigate hard-to-abate carbon emissions 联合生产钢铁和化学品，减少难以消减的碳排放

Nature Chemical Engineering Pub Date : 2024-04-26 DOI: 10.1038/s44286-024-00061-1

Yang Guo, Jieyi Lu, Qi Zhang, Yunling Cao, Lyujun Chen, Denise L. Mauzerall

{"title":"Co-production of steel and chemicals to mitigate hard-to-abate carbon emissions","authors":"Yang Guo, Jieyi Lu, Qi Zhang, Yunling Cao, Lyujun Chen, Denise L. Mauzerall","doi":"10.1038/s44286-024-00061-1","DOIUrl":"10.1038/s44286-024-00061-1","url":null,"abstract":"Hard-to-abate sectors emitted ~30% of global CO2 emissions in 2018. As the world’s largest producer of chemicals and steel, China’s mitigation efforts in these sectors are crucial. Here we examine the greenhouse gas mitigation and costs of co-producing steel and chemicals in China by extracting H2 and CO from steelmaking off-gas for chemical production and using a customized optimization model with a life-cycle assessment. Without carbon pricing, co-production reduces greenhouse gas emissions by 36 MtCO2eq yr−1 (−7%) and costs by 1.5 billion CNY per year (−1%) relative to independent production. A carbon price of 350 CNY per tCO2 enhances emissions and cost reductions to 113 MtCO2eq yr−1 (−22%) and 25.5 billion CNY per year (−10%), respectively. Furthermore, 60% of total emissions and cost reductions can be achieved via 24% of connections, ~50% of which are in Hebei, Henan, Shanxi and Shandong provinces. This study demonstrates the cost-effectiveness of using co-production to mitigate these hard-to-abate emissions and the importance of targeting critical connections to obtain the majority of reductions. Achieving a net-zero future requires that hard-to-abate sectors be addressed. Co-production offers an opportunity to mitigate chemical and steel sector emissions by extracting H2 and CO from steelmaking off-gas and using them for chemical syntheses. The authors examine carbon mitigation and costs of co-producing chemicals and steel in China.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 5","pages":"365-375"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140907160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complete hydrogenolysis of mixed plastic wastes 混合塑料废物的完全氢解

Nature Chemical Engineering Pub Date : 2024-04-19 DOI: 10.1038/s44286-024-00064-y

Meng Wang, Yongjun Gao, Shaoyu Yuan, Jin Deng, Jie Yang, Jie Yan, Shixiang Yu, Bingjun Xu, Ding Ma

{"title":"Complete hydrogenolysis of mixed plastic wastes","authors":"Meng Wang, Yongjun Gao, Shaoyu Yuan, Jin Deng, Jie Yang, Jie Yan, Shixiang Yu, Bingjun Xu, Ding Ma","doi":"10.1038/s44286-024-00064-y","DOIUrl":"10.1038/s44286-024-00064-y","url":null,"abstract":"The accumulation of plastic waste in the environment has led to a global crisis with severe consequences for wildlife and ecosystems. Upcycling offers a promising solution for reducing plastic waste by converting it into valuable chemicals and fuels. Real-life plastic waste exists as complex mixtures of different types of plastic, which poses a key challenge for efficient upcycling. Here, by using sunlight as the sole energy source, we report a thermocatalytic approach for transforming a plastic waste mixture collected from daily usage into methane and HCl using an earth-abundant Ni-based catalyst. This process successfully converted 1.03 g of a plastic waste mixture, containing five types of polyolefin, polyester and polyvinyl chloride, into 1.08 g of methane (yieldC 98%) and 0.045 g of HCl (yieldCl 91%). Catalyst deactivation caused by chlorine poisoning is prevented through the temperature-ramped process driven by the diurnal sunlight cycle, ensuring sustained catalytic activity over a period of 10 days. Real-life plastic waste exists as complex mixtures, posing a challenge for efficient upcycling. Now a sunlight-powered thermocatalytic process using a Ni-based catalyst converts a plastic mixture into CH4, H2O and HCl. Notably, chlorine poisoning is minimized through temperature modulation driven by the diurnal sunlight cycle.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 5","pages":"376-384"},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140684317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalyzing the chemical industry 催化化学工业

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00055-z

Mo Qiao

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Factoring in electrochemical separations 考虑到电化学分离

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00066-w

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How long is this going to take? 这需要多长时间？

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00052-2

D. Ian Wilson

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Indium holds it stable 铟使其保持稳定

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00059-9

Yanfei Zhu

引用次数: 0

Regulating protein condensate miscibility 调节蛋白质凝结物的混溶性

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00058-w

Alessio Lavino

引用次数: 0