Sustainable microwave-driven CO2 gasification of plastic waste for high-yield H2 and CO production

IF 20.2 1区化学 Q1 CHEMISTRY, PHYSICAL

Applied Catalysis B: Environmental Pub Date : 2024-01-11 DOI:10.1016/j.apcatb.2024.123718

Peng Zhang, Cai Liang, Mudi Wu, Yongjie Li, Xiaoping Chen, Daoyin Liu, Jiliang Ma

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Abstract

The efficiency and sustainability for the recycling of plastic wastes into hydrogen was investigated. An integrated microwave-driven valorization of plastic wastes and CO₂ for H₂ and CO production was proposed. Specifically, plastic wastes were decomposed into H₂ and solid carbons, followed by carbon elimination via CO₂ gasification under microwave irradiation. Through the high-throughput screen of catalysts as well as the optimization of key parameters, over 96% hydrogen was converted into H₂ with a yield of 480 mmol∙g⁻¹H_plastic while the carbon conversion and CO₂ conversion reached up to 70% and 53%. The five-cycle successive test displayed extraordinarily high and stable catalytic activity due to the facile elimination of carbon deposition. The application for real-world plastic wastes further demonstrated the efficient microwave-driven CO₂ gasification of plastic wastes into H₂ and CO production as a feasible and sustainable technology toward the waste-to-energy circular economy.

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可持续的微波驱动二氧化碳气化塑料废弃物，生产高产的 H2 和 CO

研究了将塑料废物回收利用为氢气的效率和可持续性。该研究提出了一种微波驱动的塑料废料和二氧化碳的综合增值方法，用于生产 H2 和 CO。具体来说，塑料废料被分解成 H2 和固体碳，然后在微波辐照下通过 CO2 气化消除碳。通过对催化剂的高通量筛选和关键参数的优化，96% 以上的氢转化为 H2，产率达到 480 mmol∙g-1Hplastic ，而碳转化率和 CO2 转化率则分别达到 70% 和 53%。由于很容易消除碳沉积，五次循环连续测试显示出极高且稳定的催化活性。在实际塑料废弃物中的应用进一步证明，微波驱动 CO2 气化塑料废弃物产生 H2 和 CO 是一项可行且可持续的技术，有助于实现废物变能源的循环经济。

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来源期刊

Applied Catalysis B: Environmental 环境科学-工程：化工

CiteScore

38.60

自引率

6.30%

发文量

1117

审稿时长

24 days

期刊介绍： Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including: 1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources. 2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes. 3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts. 4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells. 5.Catalytic reactions that convert wastes into useful products. 6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts. 7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems. 8.New catalytic combustion technologies and catalysts. 9.New catalytic non-enzymatic transformations of biomass components. The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.