Catalytic Pyrolysis of Kapok Fiber for Production of Olefins

Q. Qiu, Ying Cai, Qi Ye, Weizhong Lv
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引用次数: 2

Abstract

Pyrolysis of kapok fibers over mesoporous molecular sieves of MCM-41, Zr-MCM-41 and Cr-MCM-41 (the mole ratio of Si:Zr or Si/Cr=50) was studied by using pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Pure silicon MCM-41 showed weak acidity during pyrolysis with furfural as the main product. Zr-MCM-41 showed the dual-functionality of acid and base with both furfural and hydroxy acetone present in the products. Cr-MCM-41 was more acidic with more furfural produced. The optimal conditions for producing olefins were found to be 600°C and the ratio of kapok fiber to catalyst being 1:10 with the Zr-MCM-41 catalyst. The main products obtained via pyrolysis of kapok fiber were acetic acid, furfural, 2,4-di-tert-butylphenol, olefins, and alkanes. The excess of the catalyst and the high temperature of the reaction had certain effects on the pyrolysis of biomass to produce olefins, such as 1-decene, 1-dodecene, 1-undecene, 1-tridecene and heptadecane.  Citation:  Qiu, Q., Cai, Y., Ye, Q., and Lv, W. (2019). Catalytic Pyrolysis of Kapok Cellulose. Trends in Renewable Energy, 5, 218-228. DOI: 10.17737/tre.2019.5.2.0097
木棉纤维催化热解生产烯烃的研究
采用热解-气相色谱-质谱联用(Py-GC/MS)研究了木棉纤维在Si:Zr或Si/Cr=50的介孔分子筛MCM-41、Zr-MCM-41和Cr-MCM-41上的热解过程。纯硅MCM-41在热解过程中呈现弱酸性,主要产物为糠醛。Zr-MCM-41具有酸碱双官能团,产物中同时存在糠醛和羟基丙酮。Cr-MCM-41的酸性更强,产生的糠醛也更多。在Zr-MCM-41催化剂条件下,木棉纤维与催化剂的比例为1:10,反应温度为600℃。木棉纤维热解得到的主要产物为乙酸、糠醛、2,4-二叔丁基酚、烯烃和烷烃。催化剂的过量和反应的高温对生物质热解生成1-癸烯、1-十二烯、1-十一烯、1-三烯和十七烷等烯烃有一定的影响。引用本文:邱强,蔡勇,叶强,吕伟(2019)。木棉纤维素的催化热解。可再生能源趋势,5,218-228。DOI: 10.17737 / tre.2019.5.2.0097
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