Production of renewable aromatics and olefins by catalytic co-cracking of fatty acid methyl esters and methanol

LIU Sen; GUO Yu-qian; SUN Pei-yong; ZHANG Sheng-hong; YAO Zhi-long

doi:10.1016/S1872-5813(21)60146-9

Volume 49 Issue 12

Dec. 2021

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LIU Sen, GUO Yu-qian, SUN Pei-yong, ZHANG Sheng-hong, YAO Zhi-long. Production of renewable aromatics and olefins by catalytic co-cracking of fatty acid methyl esters and methanol[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1911-1921. doi: 10.1016/S1872-5813(21)60146-9

Citation:

LIU Sen, GUO Yu-qian, SUN Pei-yong, ZHANG Sheng-hong, YAO Zhi-long. Production of renewable aromatics and olefins by catalytic co-cracking of fatty acid methyl esters and methanol[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1911-1921. doi: 10.1016/S1872-5813(21)60146-9

Citation:

LIU Sen, GUO Yu-qian, SUN Pei-yong, ZHANG Sheng-hong, YAO Zhi-long. Production of renewable aromatics and olefins by catalytic co-cracking of fatty acid methyl esters and methanol[J]. Journal of Fuel Chemistry and Technology, 2021, 49(12): 1911-1921. doi: 10.1016/S1872-5813(21)60146-9

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Production of renewable aromatics and olefins by catalytic co-cracking of fatty acid methyl esters and methanol

doi: 10.1016/S1872-5813(21)60146-9

1.
Beijing Key Laboratory of Enze Biomass Fine Chemicals, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2.
College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China

Funds: The project was supported by the National Natural Science Foundation of China (21703012) and the Scientific Research Project of Beijing Municipal Education Commission (KM 201910017010)

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Author Bio:
0105liusen@163.com
Corresponding author: E-mail: zshong@bipt.edu.cn
Received Date: 2021-03-26
Rev Recd Date: 2021-05-07

Available Online: 2021-08-25

Publish Date: 2021-12-29

Abstract

Abstract

Catalytic cracking of triglycerides and their derivatives (e.g., fatty acid methyl esters, FAMEs) by HZSM-5 zeolite offers a promising route to produce renewable aromatics and olefins, but it is primarily hindered by the rapid catalyst deactivation caused by coke. In this work, the co-cracking of FAMEs and methanol over HZSM-5/Al₂O₃ composites was developed to regulate the product distribution and slower the catalyst deactivation. Co-feeding methanol with FAMEs enhanced the olefin selectivity at the expense of aromatics, and the total selectivities of aromatics and olefins added up to 70.9% with an optimized methanol content of 60%. The co-feeding of methanol not only promoted the olefin yield but also retarded the consecutive H-elimination of aromatics to polycyclic aromatics, thus reducing the coke formation and prolonging the catalyst lifespan. Under the conditions of 450 °C, 0.16 MPa and a space velocity of FAMEs at 4 h⁻¹, increasing the methanol blending ratio in FAMEs from zero to 50% reduced coke from 17.8% to 10.1% after reaction for 12 h. Besides, the spent catalyst for the co-cracking reaction could be easily regenerated by coke combustion, yielding similar structure, acidity and activity to those of the fresh one.
- catalytic cracking,
- fatty acid methyl ester,
- methanol,
- aromatic,
- olefin

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References(31)

References

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