Photocatalytic degradation of waste refrigerant R134a

doi:10.16085/j.issn.1000-6613.2022-1035

Chemical Industry and Engineering Progress ›› 2023, Vol. 42 ›› Issue (4): 2109-2114.DOI: 10.16085/j.issn.1000-6613.2022-1035

• Resources and environmental engineering • Previous Articles Next Articles

Photocatalytic degradation of waste refrigerant R134a

YANG Zhuang¹(), LI Runhua¹, QIANG Zengshou¹, WANG Yajun¹(), YAO Wenqing²()

^1.School of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
^2.Department of Chemistry, Tsinghua University, Beijing 100084, China

Received:2022-06-06 Revised:2022-09-20 Online:2023-05-08 Published:2023-04-25
Contact: WANG Yajun, YAO Wenqing

废弃制冷剂R134a的光催化降解

杨状¹(), 李闰华¹, 强增寿¹, 王雅君¹(), 姚文清²()

^1.中国石油大学(北京)新能源与材料学院，北京 102249
^2.清华大学化学系，北京 100084

通讯作者: 王雅君,姚文清
作者简介:杨状（1993—），男，博士研究生，研究方向为光催化、纳米材料合成。E-mail：2019310616@student.cup.edu.cn。
基金资助:
国家重点研发计划(2019YFC1904500);国家自然科学基金(52270115);中国石油大学（北京）科学基金(2462019QNXZ05);重质油国家重点实验室自主项目

Abstract

Abstract:

According to "Montreal Protocol on Substances that Deplete the Ozone Layer", waste refrigerants will be phased out and destroyed due to their greenhouse effect and ecological hazards. At present, there is no efficient and low-cost method to treat waste refrigerant. We propose a new strategy for the photocatalytic treatment of waste refrigerant. BiPO₄/GA aerogels were prepared, which showed excellent adsorption capacity of graphene and efficient photocatalytic capacity of BiPO₄. The rapid adsorption and complete mineralization of pollutants were realized. The process of photocatalytic degradation of typical refrigerant tetrafluoroethane (CH₂FCF₃, R134a) was monitored online by in situ infrared spectroscopy. The process of bond breaking and complete degradation of R134a was analyzed. It was clear that the final product of photocatalytic degradation of R134a was HF and CO₂. The results showed that R134a could be completely mineralized and decomposed under the photocatalysis of BiPO₄/GA aerogel. The research provided an effective way to degrade waste refrigerants, and the application of in-situ infrared spectra would also be a reliable method for monitoring the decomposition process of waste refrigerants.

Key words: photocatalysis, catalyst, BiPO₄, graphene, adsorption, refrigerant, reaction

摘要：

根据《蒙特利尔破坏臭氧层物质管制议定书》要求，废弃制冷剂由于其温室效应及生态危害，将被逐步淘汰和销毁。目前还没有高效低成本处理废弃制冷剂的方法，本文提出光催化处理废弃制冷剂新策略。制备了BiPO₄/GA气凝胶，材料兼具了石墨烯优异的吸附能力与BiPO₄高效的光催化能力，可实现污染物的迅速吸附与彻底矿化。以原位红外光谱为评价手段，在线监测了光催化降解典型制冷剂四氟乙烷（CH₂FCF₃，R134a）的进程，包括R134a的瞬间吸附、R134a大量被光催化降解时C—F键的断裂、R134a被彻底降解的过程。明确了光催化降解R134a的最终产物为HF和CO₂。结果表明，在BiPO₄/GA气凝胶光催化作用下，R134a可被彻底矿化分解。研究结果将为降解废弃制冷剂提供有效途径，原位红外光谱的应用也将为废弃制冷剂的分解过程提供可靠的监测手段。

关键词: 光催化, 催化剂, 磷酸铋, 石墨烯, 吸附, 制冷剂, 反应

CLC Number:

X511

YANG Zhuang, LI Runhua, QIANG Zengshou, WANG Yajun, YAO Wenqing. Photocatalytic degradation of waste refrigerant R134a[J]. Chemical Industry and Engineering Progress, 2023, 42(4): 2109-2114.

杨状, 李闰华, 强增寿, 王雅君, 姚文清. 废弃制冷剂R134a的光催化降解[J]. 化工进展, 2023, 42(4): 2109-2114.

Figures/Tables 6

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Photocatalytic degradation of waste refrigerant R134a

废弃制冷剂R134a的光催化降解

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