华南理工大学学报(自然科学版) ›› 2021, Vol. 49 ›› Issue (9): 65-72.doi: 10.12141/j.issn.1000-565X.200022

所属专题: 2021年化学化工

• 化学化工 • 上一篇    下一篇

乙酰丙酸催化脱羧制备丁/丙酮

张鑫1,2 司志浩1,2 孙勇1,2† 雪晶唐兴1,2 曾宪海1,2,4 林鹿1,2,4   

  1. 1.厦门大学 能源学院,福建 厦门 361102;2.厦门市生物质清洁高值化利用重点实验室,福建 厦门 361102;
    3.中国石油天然气集团有限公司 石油化工研究院,北京 102206;4.厦门大学 福建省生物质清洁高值化技术工程研究中心,福建 厦门 361102
  • 收稿日期:2020-01-14 修回日期:2020-04-06 出版日期:2021-09-25 发布日期:2021-09-01
  • 通信作者: 孙勇(1979-),男,博士,副教授,主要从事生物能源化学和生物基材料等的研究。 E-mail:sunyong@xmu.edu.cn
  • 作者简介:张鑫(1992-),女,硕士,主要从事有机化工材料等的研究。E-mail:2648790879@qq.com
  • 基金资助:
    国家自然科学基金资助项目(21978246,21776234);中国石油天然气集团有限公司创新基金资助项目(2018D-5007-0503)

Preparation of Butanone and Acetone via CatalyticDecarboxylation of Levulinic Acid

ZHANG Xin1,2 SI Zhihao1,2 SUN Yong1,2 XUE JingTANG Xing1,2 ZENG Xianhai1,2,4 LIN Lu1,2,4   

  1. 1.College of Energy,Xiamen University,Xiamen 361102,Fujian,China;2.Xiamen Key Laboratory of Clean and 
    High-Valued Utilization for Biomass,Xiamen 361102,Fujian,China;3.Petrochemical Research Institute of China National 
    Petroleum Corporation,Beijing 102206,China;4.Fujian Engineering and Research Center of Clean and High-Valued 
    Technologies for Biomass,Xiamen University,Xiamen 361102,Fujian,China
  • Received:2020-01-14 Revised:2020-04-06 Online:2021-09-25 Published:2021-09-01
  • Contact: 孙勇(1979-),男,博士,副教授,主要从事生物能源化学和生物基材料等的研究。 E-mail:sunyong@xmu.edu.cn
  • About author:张鑫(1992-),女,硕士,主要从事有机化工材料等的研究。E-mail:2648790879@qq.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(21978246,21776234)

摘要: 以H-β分子筛为载体制备了高分散性的CuO-Bi2O3/H-β催化剂,在水体系中催化乙酰丙酸(LA)脱羧制备丁酮(MEK)和丙酮(Ace)。考察了影响LA脱羧性能的反应因素,对催化剂进行了表征。在290℃、初始pH=5~6的体系中,24CuO-12Bi2O3/H-β催化LA脱羧反应3h,LA转化率达88.06%,MEK产率达40.75%,MEK和Ace的总产率达61.05%,说明该催化剂不仅脱羧活性高,而且具有较好的循环使用性能。表征分析发现,24CuO-12Bi2O3/H-β兼具中强酸、中强碱及弱酸、弱碱位点,Bi元素的引入促进了CuO在载体上的分散,Cu/Bi组分起到了协同催化脱羧作用。

关键词: 乙酰丙酸, 非均相脱羧, 丁酮, 丙酮, CuO-Bi2O3/H-β催化剂

Abstract: CuO-Bi2O3/H-β catalyst with high dispersion was prepared by taking H-β molecular sieve as the carrier,and butanone (MEK) and acetone (Ace) were prepared via the decarboxylation of levulinic acid (LA).Then,the parameters affecting the decarboxylation performance of LA were investigated and the catalysts were characterized.Under the condition of 290℃,initial pH 5~6 and decarboxylation reaction for 3h,the conversion rate of LA can reach 88.06%,the yield of MEK can reach 40.75%,and the total yield of MEK and Ace can reach 61.05%.The research results show that the catalyst has high decarboxylation activity and excellent recycling performance.Moreover,the characterization results show that CuO-Bi2O3/H-β possesses both weak acid-base sites and medium-strong acid-base sites,and the introduction of Bi element promotes the dispersion of CuO in the carrier,and that the Cu/Bi component plays a synergistic catalytic decarboxylation role.

Key words: levulinic acid, heterogeneous decarboxylation, butanone, acetone, CuO-Bi2O3/H-β catalyst

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