A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
Zinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2021-01-01
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| Series: | Main Group Metal Chemistry |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/mgmc-2021-0001 |
| _version_ | 1818999661671743488 |
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| author | Yalçın Ali Gönen Mehmet |
| author_facet | Yalçın Ali Gönen Mehmet |
| author_sort | Yalçın Ali |
| collection | DOAJ |
| description | Zinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between solid zinc oxide and boric acid solution. A stoichiometric amount of zinc oxide and 5.0% excess boric acid were used in experiments and the other parameters, mixing speed (1700 rpm), the solid-liquid ratio of 20%, and the amount of seed crystal (3.9% wt) were kept constant for all experiments. A 91.1% conversion was obtained at 120°C for 5 h of reaction time. Precipitated product was filtered and washed by hot water to remove the excess boric acid. Finally it was dried until reaching to a constant mass in an air circulating oven at 105°C. Powder products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR spectrum and XRD pattern of powders are consistent with data of the zinc borate given in the literature. According to SEM analysis, whiskers are less than 1 μm in diameter and their lengths are in the range of 1–10 μm. |
| first_indexed | 2024-12-20T22:20:58Z |
| format | Article |
| id | doaj.art-fbab21b484e04e679c8813dc747d3eb0 |
| institution | Directory Open Access Journal |
| issn | 2191-0219 |
| language | English |
| last_indexed | 2024-12-20T22:20:58Z |
| publishDate | 2021-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Main Group Metal Chemistry |
| spelling | doaj.art-fbab21b484e04e679c8813dc747d3eb02022-12-21T19:24:57ZengDe GruyterMain Group Metal Chemistry2191-02192021-01-014411810.1515/mgmc-2021-0001mgmc-2021-0001A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal methodYalçın Ali0Gönen Mehmet1Department of Chemical Engineering, Engineering Faculty, Süleyman Demirel University, Bati Kampus, E-13, Çünür, Isparta32260, TurkeyDepartment of Chemical Engineering, Engineering Faculty, Süleyman Demirel University, Bati Kampus, E-13, Çünür, Isparta32260, TurkeyZinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between solid zinc oxide and boric acid solution. A stoichiometric amount of zinc oxide and 5.0% excess boric acid were used in experiments and the other parameters, mixing speed (1700 rpm), the solid-liquid ratio of 20%, and the amount of seed crystal (3.9% wt) were kept constant for all experiments. A 91.1% conversion was obtained at 120°C for 5 h of reaction time. Precipitated product was filtered and washed by hot water to remove the excess boric acid. Finally it was dried until reaching to a constant mass in an air circulating oven at 105°C. Powder products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR spectrum and XRD pattern of powders are consistent with data of the zinc borate given in the literature. According to SEM analysis, whiskers are less than 1 μm in diameter and their lengths are in the range of 1–10 μm.https://doi.org/10.1515/mgmc-2021-0001zinc boratefire retardantwhiskerhydrothermal methodheterogeneous reaction |
| spellingShingle | Yalçın Ali Gönen Mehmet A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method Main Group Metal Chemistry zinc borate fire retardant whisker hydrothermal method heterogeneous reaction |
| title | A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method |
| title_full | A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method |
| title_fullStr | A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method |
| title_full_unstemmed | A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method |
| title_short | A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method |
| title_sort | novel approach for the production of zinc borate 4zno·b2o3·h2o using a single step hydrothermal method |
| topic | zinc borate fire retardant whisker hydrothermal method heterogeneous reaction |
| url | https://doi.org/10.1515/mgmc-2021-0001 |
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