4.6 Article

Efficient Synthesis of C4 Compound with Low Carbon Emission from Acetaldehyde: Aldol Condensation Catalyzed by Regulable Acidic-Alkaline Al/Mg Sites of CuMgAlO

期刊

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.2c0045

关键词

-

资金

  1. National Basic Research Program of China - Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
  2. Fundamental Research Funds of Jiangsu Academy of Agricultural Sciences [ZX(21)1222]
  3. general program of National Natural Science Foundation of China [22078136]
  4. Jiangsu Agriculture Science and Technology Innovation Fund [CX(20)3079]

向作者/读者索取更多资源

CuMgAlO catalyst was successfully synthesized and applied in the self-condensation of acetaldehyde. The acidity can be regulated through the addition of Cu species, resulting in enhanced selectivity and activity.
Aldol condensation is an optimal method for carbon growth free from the thermo-cleavage technique of fossil resources with high carbon emissions. To further develop a catalyst with high activity and selectivity, a CuMgAl layered double oxide, named X/CuMgAlO, is successfully obtained after calcinating the MgAl hydrotalcite precursor doped with Cu2+. The resulting sample is applied as a catalyst in the self-condensation of acetaldehyde to crotonaldehyde. On the basis of the investigation of the reaction conditions, sample 15/CuMgAlO has presented to be the optimal catalyst in the aldol condensation of acetaldehyde to form crotonaldehyde with the conversion and selectivity of 92.3% and 80.4%, respectively. NH3- TPD, CO2-TPD, IGC, and Py-IR were applied to investigate the synergistic effect of the acidic and alkaline sites. It has been verified that a suitable acidity could be regulated through the addition of Cu species, and more Lewis acidic sites from Al sites can be formed due to the Jahn-Teller effect, the enhanced electronegativity of Cu, and the shattered lamellar layer in the calcinated CuMgAlO. Besides, the relatively mild acid could guarantee high selectivity to the target crotonaldehyde. Considering that aldol condensation could create a new carbon bond without the use of fossil resources, carbon emissions are significantly reduced in the field of fine-chemical synthesis industry.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据