The production of light olefins by catalytic cracking of the microalga Isochrysis zhanjiangensis over a modified ZSM-5 catalyst
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- 作者：Xinglong Dong<sup>asup><sup> ; sup><sup>bsup> ; Song Xue<sup>csup> ; Jinling Zhang<sup>asup> ; Wei Huang<sup>asup> ; Jiannan Zhou<sup>csup> ; Zhaoan Chen<sup>asup> ; Danhua Yuan<sup>asup><sup> ; sup><sup>bsup> ; Yunpeng Xu<sup>asup><sup> ; sup><sup>xuyp@dicp.ac.cn" class="auth_mailsup> ; Zhongmin Liu<sup>asup><sup> ; sup><sup>liuzm@dicp.ac.cn" class="auth_mailsup>
- 关键词：Microalgae ; Isochrysis zhanjiangensis ; Catalytic cracking ; ZSM-5 ; Light olefins
- 刊名：Chinese Journal of Catalysis
- 出版年：May 2014
- 年：2014
- 卷：35
- 期：5
- 页码：684-691
- 全文大小：973 K
文摘
This study investigated the catalytic cracking of the microalga Isochrysis zhanjiangensis over a modified ZSM-5 catalyst with the aim of producing C2–C4 light olefins. Compared with the thermal cracking process, the catalytic cracking of this microalga displayed higher selectivity for and greater yield of these olefins. The catalytic cracking of extracted lipids and the corresponding residues of the microalga was also examined, and the results showed that the lipids could be efficiently converted to light olefins. The catalytic cracking of lipids extracted by different solvents demonstrated that neutral lipids gave the highest yield of light olefins at 36.7%. The yields of light olefins obtained from catalytic cracking of the extraction residues were much lower than the yields obtained from lipids, and thus the lipids, especially the neutral lipids, are the primary contributors to the generation of light olefins. Isochrysis zhanjiangensis with an elevated neutral lipid content will therefore give the highest yield of light olefins through catalytic cracking.