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| 新型负载型催化剂在植物甾醇酯合成工艺中的应用 |
| Application of novel supported catalyst in synthesis process of phytosterol ester |
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| DOI： |
| 中文关键词: 甾醇酯 催化剂 氧化铜-纳米羟基磷灰石 重复使用 |
| 英文关键词:sterol ester catalyst copper oxide-nano hydroxyapatite reuse |
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| 中文摘要: |
| 开发了一种新型、高效的纳米羟基磷灰石负载氧化铜催化剂，初步表征了负载型催化剂的性质（比表面积、孔结构、微观形貌及晶体结构），并优化了其催化植物甾醇、脂肪酸合成植物甾醇酯的工艺参数。结果表明：纳米羟基磷灰石经水蒸气扩孔、Cu（NO3）2浸渍、焙烧可有效制备氧化铜-纳米羟基磷灰石（CuO-NHAP）催化剂；酯化最佳条件为催化剂用量0.6%、酸醇摩尔比1.4∶?1、反应温度160?℃、反应时间6 h，在此条件下酯化率为99.3%；催化剂重复使用6个批次后，催化剂相对活力仍保持在85%以上。 |
| 英文摘要: |
| A novel and high efficient copper oxide-nano hydroxyapatite （CuO-NHAP） catalyst was developed. The properties of supported catalyst（specific surface area, pore structure、mcro-morphology and crystal structure） were characterized and the process parameters of synthesis of plant sterol ester with plant sterol and fatty acid catalyzed by CuO-NHAP were optimized. The results showed that the CuO-NHAP catalyst was prepared effectively by pores-broading of nano-hydroxyapatite with vapour, impregnation with Cu（NO3）2 and calcination. The optimal conditions of esterfication were obtained as follows：dosage of catalyst 0.6%, molar ratio of oleic acid to phytosterol 1.4∶?1, reaction temperature 160?℃ and reaction time 6 h. Under these conditions, the esterification rate was 99.3%. When the catalyst was reused for six times, its activity kept more than 85%. |
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