Study on the performance of hydrotalcite-based ozone decomposition catalyst

Q3 Energy 燃料化学学报 Pub Date : 2023-07-01 DOI:10.1016/S1872-5813(23)60337-8

MA Jia-chuan , GUO Ming-xing , WANG Sheng , WANG Shu-dong

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Abstract

Ozone in the indoor environment is seriously harmful to human health, and the catalytic decomposition method is one of the most effective ozone purification technologies. The development of ozone decomposition catalyst with superior activity and stability is the bottleneck, especially under high humidity, high space velocity, and ambient temperature. Layered double hydroxide (LDH) has a unique two-dimensional layered structure and excellent water resistance. In the paper, Ni₃Fe, Ni₃Co, Ni₃Mn, and Co₃Fe hydrotalcite-structured catalysts were prepared by the coprecipitation method. And their ozone catalytic decomposition performance was tested under 30 °C, 600000 mL/(g·h), low humidity (RH < 5%), and high humidity (RH > 90%). The results showed that Ni₃Co-LDH exhibited excellent ozone decomposition performance, and the ozone conversion was 88% and 77% under low humidity and high humidity, respectively. Combined with XRD, BET, SEM, XPS, Raman, FT-IR, TG and other characterizations, the intrinsic mechanism of the excellent ozone decomposition performance of LDH catalysts was revealed. The paper provided new ideas for developing transition metal ozone decomposition catalysts.

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水滑石基臭氧分解催化剂的性能研究

摘要室内环境中的臭氧严重危害人体健康，催化分解法是最有效的臭氧净化技术之一。开发具有优良活性和稳定性的臭氧分解催化剂是目前研究的瓶颈，特别是在高湿、高空速和环境温度条件下。层状双氢氧化物(LDH)具有独特的二维层状结构和优异的耐水性。本文采用共沉淀法制备了Ni3Fe、Ni3Co、Ni3Mn和Co3Fe水滑石结构催化剂。在30℃、600000 mL/(g·h)、低湿度(RH <5%)，高湿(RH >90%)。结果表明，Ni3Co-LDH具有优异的臭氧分解性能，在低湿和高湿条件下臭氧转化率分别为88%和77%。结合XRD、BET、SEM、XPS、Raman、FT-IR、TG等表征，揭示了LDH催化剂优异臭氧分解性能的内在机理。为过渡金属臭氧分解催化剂的开发提供了新的思路。

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来源期刊

燃料化学学报 Chemical Engineering-Chemical Engineering (all)

CiteScore

2.80

自引率

0.00%

发文量

5825

期刊介绍： Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.