Ozone-initiated degradation of 1,2-dichlorobenzene over ceria-supported manganese, nickel, vanadium and iron catalysts

IF 2 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Pure and Applied Chemistry Pub Date : 2024-03-01 DOI:10.1515/pac-2023-1019

Nomthandazo Mkhize, Viswandha Srirama Rajasekhar Pullabhotla

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引用次数: 0

Abstract

Oxidative degradation of 1,2-dichlorobenzene using different loadings of metal (Mn, Ni, V, and Fe) supported on CeO2 was studied. All metal (Mn, Ni, V, and Fe) loaded CeO2 catalysts were synthesized using the method called wet impregnation and the as-synthesized catalyst materials were characterized using different analytical instruments such as FT-IR, SEM-EDX, XRD, BET, ICP-OES, and TEM methods. The oxidation reactions of 1,2-dichlorobenzene were studied by bubbling substrate (1,2-dichlorobenzene) with ozone (0.0794 mg/L) into a glass reactor via a porous bubbler of porosity 2 over a period of 24 h. A 2.5 % Fe/CeO2 catalyst was found to be the most active catalyst with a percentage conversion of 62 % within 24 h of ozonation. The oxidation products were identified using GC-MS and FT-IR spectroscopy was used to study the functional groups present in the ozonation product. The ozonation products that were identified are mucochloric acid and 3,4-dichloro-2,5-furandione. All the V loaded on CeO2 catalysts produced 100 % mucohloric acid at the end of ozonation (24 h).

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在铈支撑的锰、镍、钒和铁催化剂上臭氧引发的 1,2-二氯苯降解

研究人员使用 CeO2 上不同负载的金属（锰、镍、钒和铁）对 1,2 二氯苯进行了氧化降解。所有负载金属（锰、镍、钒和铁）的 CeO2 催化剂都是用湿法浸渍法合成的，合成后的催化剂材料用不同的分析仪器，如 FT-IR、SEM-EDX、XRD、BET、ICP-OES 和 TEM 方法进行了表征。在 24 小时内，通过孔隙率为 2 的多孔鼓泡器将底物（1,2-二氯苯）与臭氧（0.0794 毫克/升）一起鼓泡到玻璃反应器中，研究了 1,2-二氯苯的氧化反应。使用气相色谱-质谱法对氧化产物进行了鉴定，并使用傅立叶变换红外光谱法对臭氧氧化产物中的官能团进行了研究。已确定的臭氧氧化产物为 mucochloric acid 和 3,4-二氯-2,5-呋喃二酮。所有负载在 CeO2 催化剂上的 V 在臭氧处理（24 小时）结束时都产生了 100%的短氯酸。

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来源期刊

Pure and Applied Chemistry 化学-化学综合

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： Pure and Applied Chemistry is the official monthly Journal of IUPAC, with responsibility for publishing works arising from those international scientific events and projects that are sponsored and undertaken by the Union. The policy is to publish highly topical and credible works at the forefront of all aspects of pure and applied chemistry, and the attendant goal is to promote widespread acceptance of the Journal as an authoritative and indispensable holding in academic and institutional libraries.