Grishma Vala , Rajendrasinh N. Jadeja , Aditya A. Puranik , Ray J. Butcher
{"title":"二氧化硅支撑的酰基吡唑酮钴络合物的合成和表征及其在乙苯氧化中的催化性能","authors":"Grishma Vala , Rajendrasinh N. Jadeja , Aditya A. Puranik , Ray J. Butcher","doi":"10.1016/j.molstruc.2024.140513","DOIUrl":null,"url":null,"abstract":"<div><div>A novel β-diketone-containing acylpyrazolone (2-(3-chlorophenyl)-3‑hydroxy-5-methyl-2,3-dihydro-1H-pyrazole-4-yl) (4-nitrophenyl) methanone [HL<sup>C</sup>] ligand and its cobalt complex [Co(HL<sup>C</sup>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] were synthesized and characterized. A silica-supported cobalt complex was synthesized as a heterogeneous catalyst to investigate the cobalt complex's catalytic activity. The characterization techniques used for the synthesized compounds are CHN analysis, SC-XRD, FT-IR, TGA, DRS spectra, BET and BJH measurements, ICP-MS, XPS, powder XRD and SEM. Without any solvent, the cobalt complex catalytic impact on the oxidation of ethylbenzene was investigated with tert‑butyl hydroperoxide (70 % TBHP) as an oxidant. The catalyst exhibited good conversion (88 % conversion) and selectivity (83 % acetophenone) in the oxidation of ethylbenzene. The catalyst shows no leaching occurred under the reaction conditions because it is stable and reusable for further reaction.</div></div>","PeriodicalId":16414,"journal":{"name":"Journal of Molecular Structure","volume":"1322 ","pages":"Article 140513"},"PeriodicalIF":4.0000,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and characterization of silica-supported cobalt acylpyrazolone complex and its catalytic performance in ethylbenzene oxidation\",\"authors\":\"Grishma Vala , Rajendrasinh N. Jadeja , Aditya A. Puranik , Ray J. Butcher\",\"doi\":\"10.1016/j.molstruc.2024.140513\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A novel β-diketone-containing acylpyrazolone (2-(3-chlorophenyl)-3‑hydroxy-5-methyl-2,3-dihydro-1H-pyrazole-4-yl) (4-nitrophenyl) methanone [HL<sup>C</sup>] ligand and its cobalt complex [Co(HL<sup>C</sup>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] were synthesized and characterized. A silica-supported cobalt complex was synthesized as a heterogeneous catalyst to investigate the cobalt complex's catalytic activity. The characterization techniques used for the synthesized compounds are CHN analysis, SC-XRD, FT-IR, TGA, DRS spectra, BET and BJH measurements, ICP-MS, XPS, powder XRD and SEM. Without any solvent, the cobalt complex catalytic impact on the oxidation of ethylbenzene was investigated with tert‑butyl hydroperoxide (70 % TBHP) as an oxidant. The catalyst exhibited good conversion (88 % conversion) and selectivity (83 % acetophenone) in the oxidation of ethylbenzene. The catalyst shows no leaching occurred under the reaction conditions because it is stable and reusable for further reaction.</div></div>\",\"PeriodicalId\":16414,\"journal\":{\"name\":\"Journal of Molecular Structure\",\"volume\":\"1322 \",\"pages\":\"Article 140513\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2024-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Molecular Structure\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022286024030217\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Structure","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022286024030217","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Synthesis and characterization of silica-supported cobalt acylpyrazolone complex and its catalytic performance in ethylbenzene oxidation
A novel β-diketone-containing acylpyrazolone (2-(3-chlorophenyl)-3‑hydroxy-5-methyl-2,3-dihydro-1H-pyrazole-4-yl) (4-nitrophenyl) methanone [HLC] ligand and its cobalt complex [Co(HLC)2(H2O)2] were synthesized and characterized. A silica-supported cobalt complex was synthesized as a heterogeneous catalyst to investigate the cobalt complex's catalytic activity. The characterization techniques used for the synthesized compounds are CHN analysis, SC-XRD, FT-IR, TGA, DRS spectra, BET and BJH measurements, ICP-MS, XPS, powder XRD and SEM. Without any solvent, the cobalt complex catalytic impact on the oxidation of ethylbenzene was investigated with tert‑butyl hydroperoxide (70 % TBHP) as an oxidant. The catalyst exhibited good conversion (88 % conversion) and selectivity (83 % acetophenone) in the oxidation of ethylbenzene. The catalyst shows no leaching occurred under the reaction conditions because it is stable and reusable for further reaction.
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