|
| Synthesis of biodiesel catalyzed by phosphotungstic acid supported on silica |
| |
| DOI：10.12166/j.zgyz.1003-7969/2020.04.012 |
| KeyWord:biodiesel solid acid phosphotungstic acid catalysis |
| FundProject:国家重点研发计划（2017YFD0601003）；国家自然科学基金项目(51606201) |
|
| Hits: 1412 |
| Download times: 615 |
| Abstract: |
| ：With tetraethoxysilane as silicon resource, phosphotungstic acid supported on silica was prepared by sol-gel method, and it was characterized by infrared spectrum and XRD.The biodiesel was synthesized by esterification of methanol and rapeseed oil using the self-made solid acid as catalyst. The optimal reaction conditions were determined by single factor experiment and orthogonal experiment. The results showed that the optimal synthesis conditions of biodiesel catalyzed by phosphotungstic acid supported on silica were obtained as follows: phosphotungstic acid loading amount 40%, molar ratio of methanol to rapeseed oil 6∶ 1,dosage of catalyst 10%,reaction time 2.5 h and reaction temperature 68 ℃.Under these conditions, the conversion rate of biodiesel was 96.0%. |
| View full text View/Add Comment Download reader |
| Close |
