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| 马铃薯粉炭基固体酸催化制备生物柴油研究 |
| Preparation of biodiesel catalyzed by potato powder carbon-based solid acid |
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| DOI： |
| 中文关键词: 马铃薯粉 炭基固体酸 生物柴油 酯化 |
| 英文关键词:potato powder carbon-based solid acid biodiesel esterification |
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| 中文摘要: |
| 将马铃薯粉作为炭化材料，再用浓硫酸进行磺化，制备了高活性高稳定性的炭基固体酸催化剂，采用SEM、BET、FT-IR和XRD对其进行表征，并应用于催化油酸与甲醇的酯化反应中。结果表明：该催化剂为随机排列的芳香族碳片组成的无定型碳结构，呈现块状、疏松、边缘粗糙的形貌；结构中含有多环芳烃，且磺酸基已成功负载；催化剂孔结构主要以介孔为主，能为反应物和活性位点的接触提供通道。当酯化温度为65?℃、酯化时间为2.5 h、醇油摩尔比为10∶?1、催化剂用量（占油酸的质量）为5％时，油酸转化率达到95.68％。再生后的催化剂在重复利用5次后，油酸转化率仍可达89.56％。 |
| 英文摘要: |
| The highly active and stable carbon-based solid acid catalyst was prepared using potato powder as carbonization material and sulfonating with sulfuric acid. SEM, BET, FT-IR and XRD were used to characterize the structure of the catalyst. Then the catalyst was used in the esterification of oleic acid and methanol. The results showed that the catalyst was an amorphous carbon structure composed of randomly arranged aromatic carbon sheets. It was blocky, loose, rough and amorphous on the surface. The sulfonic acid group was successfully loaded on the polycyclic aromatic hydrocarbon. The pore structure inside the catalyst was mainly mesoporous, which could provide access for reactants and active sites. Under the conditions of reaction temperature 65?℃, reaction time 2.5 h, molar ratio of methanol to oleic acid 10∶?1, and dosage of catalyst 5%(based on the mass of oleic acid), the oleic acid conversion was as high as 95.68%. After reusing for five times, the conversion of oleic acid could still reach 89.56%. |
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