Synthesis of phytosteryl oleate using composite catalysts

ZHANG Shuo; YANG Yiwen; XING Huabin; SU Baogen; ZHANG Zhiguo; BAO Zongbi; YANG Qiwei; REN Qilong

doi:10.11949/j.issn.0438-1157.20150552

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Synthesis of phytosteryl oleate using composite catalysts

更新时间：2025-12-10

- Synthesis of phytosteryl oleate using composite catalysts
- CIESC Journal Issue 8, Pages: 3078-3083(2015)
- 作者机构：
  
  浙江大学生物质化工教育部重点实验室, 化学工程与生物工程学院,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150552
  CLC： Q645.9+8
- Online First：05 August 2015，
  
  Published：05 August 2015
- 稿件说明：
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ZHANG Shuo, YANG Yiwen, XING Huabin, et al. Synthesis of phytosteryl oleate using composite catalysts[J]. CIESC Journal, 2015, (8): 3078-3083.
DOI：

ZHANG Shuo, YANG Yiwen, XING Huabin, et al. Synthesis of phytosteryl oleate using composite catalysts[J]. CIESC Journal, 2015, (8): 3078-3083. DOI： 10.11949/j.issn.0438-1157.20150552.

摘要

以油酸和豆甾醇为原料

研究了以硫酸氢钾-金属氧化物为组合的复合催化剂在酯化合成中的应用。首先

通过与其他硫酸盐的酯化效果进行比较

筛选出KHSO4是适用于酯化合成中高效且安全的催化剂

并将其和不同的金属氧化物进行组合作为复合催化剂进一步探究酯化效果。通过实验结果比较

得到KHSO4-ZnO作催化剂的酯化率最高。然后

将KHSO4-ZnO作为复合催化剂

针对催化剂用量、反应温度、反应时间、酸醇摩尔比等因素进行考察

探究油酸和豆甾醇的最佳酯化条件。得到最佳工艺条件为:在通高纯氮气条件下

选用3.0%KHSO4+1.0%ZnO(以豆甾醇的质量分数计)为催化剂

油酸和豆甾醇的摩尔比为1.8:1

反应的温度为 150℃

反应的时间为7 h

酯化率达到92.17%。本工艺利用KHSO4-ZnO作为复合催化剂

得到较高的酯化率

实现了一条合成油酸豆甾醇酯的新工艺路线。

Abstract

Phytosteryl oleate synthesized from stigmasterol and oleic acid using the composite catalysts of potassium bisulfate and metal oxide was investigated. By comparing with other sulfates

potassium bisulfate was proved to be more suitable for the esterification of oleic acid and stigmasterol in an efficient and safe way. Taking into account the high catalytic efficiency of metal oxide

the combination of potassium bisulfate and different metal oxides as a kind of composite catalyst may be promising. The catalyst comparative experiments suggested that the composite catalyst of KHSO4-ZnO was the best catalyst in terms of the esterification yields. When the esterification reaction was carried out at 150℃ for 7 h with oleic acid and stigmasterol in a molar ratio of 1.8:1 and 3.0% KHSO4 + 1.0% ZnO catalyst (based on the mass of stigmasterol) under the protection of nitrogen

the highest esterification yield was 92.17%. In the presence of the composite catalyst of KHSO4-ZnO

a new process for the synthesis of stigmasterol oleate with high esterification yield is acquired.

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