Synthesis and Catalytic Activity of Activated Carbon Supported Sulfonated Cobalt Phthalocyanine in the Preparation of Dimethyl Disulfide
| Autor: | Dai Mingxing, Rujie Yao, Daomin Zheng, Zhiliang Cheng, Xuejun Quan, Liu Yaling, Li Shuo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
dimethyl disulfide
chemistry.chemical_element Ethylenediamine 02 engineering and technology 010402 general chemistry 01 natural sciences Oxygen lcsh:Technology Catalysis lcsh:Chemistry chemistry.chemical_compound Merox medicine General Materials Science Dimethyl disulfide activated carbon Instrumentation lcsh:QH301-705.5 metal phthalocyanine Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology General Engineering 021001 nanoscience & nanotechnology lcsh:QC1-999 0104 chemical sciences Computer Science Applications chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Yield (chemistry) Fine chemical sodium methylmercaptide oxidation 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) Merox process lcsh:Physics Nuclear chemistry Activated carbon medicine.drug |
| Zdroj: | Applied Sciences, Vol 9, Iss 1, p 124 (2018) Applied Sciences Volume 9 Issue 1 |
| ISSN: | 2076-3417 |
| Popis: | The Merox process was widely applied in the fine chemical industry to convert mercaptans into disulfides by oxidation with oxygen, including dimethyl disulfide (DMDS). In this paper, a new activated carbon (AC)-supported sulfonated cobalt phthalocyanine (AC-CoPcS) catalyst was prepared through the chemical linkage of ethylenediamine between them. UV&minus VIS, FT-IR, BET, and XPS were used to characterize the structure of the new catalyst. Then AC-CoPcS was applied to catalyze sodium methylmercaptide (SMM) oxidation for the preparation of DMDS. The effect of process parameters, such as reaction time, catalyst dosage, reaction temperature, and oxygen pressure on SMM conversion per pass (CPPSMM), yield (YieldDMDS), and purity of the DMDS (PurityDMDS) product were investigated to evaluate the catalytic performance of AC-CoPcS. The new supported catalyst exhibits better catalytic performance than the commercial one and can be properly reused four times to obtain CPPSMM and YieldDMDS higher than 90% and 70%. Under the optimum experimental conditions, the CPPSMM and YieldDMDS could reach as high as 98.7% and 86.8%, respectively, and the purity of the DMDS product is as high as 99.8%. This new supported catalyst exhibits good industrial application prospects. |
| Databáze: | OpenAIRE |
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