MCM-41/ZSM-5 composite particles for the catalytic fast pyrolysis of biomass
MCM-41/ZSM-5 composite particles for the catalytic fast pyrolysis of biomass
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DOI：
10.1016/j.apcata.2020.117727
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发表时间：
2020-07
影响因子：
5.5
通讯作者：
Lei Yu;A. Farinmade;Oluwole Ajumobi;Yangfen Su;V. John;J. Valla
中科院分区：
文献类型：
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作者：
Lei Yu;A. Farinmade;Oluwole Ajumobi;Yangfen Su;V. John;J. Valla
ZSM-5分子筛具有较高的轻烃选择性，是一种很有前途的生物质快速催化裂解催化剂。然而，催化剂的快速失活一直是CFP商业化的主要挑战。本研究的目的是评价MCM-41/ZSM-5复合材料在生物质CFP过程中的性能。在这里，我们首次报道了一种独特的MCM-41/ZSM-5复合材料的合成，这是一种基于气雾剂的一步法。通过改变复合材料中ZSM-5分子筛的组成，制备了ZSM-5分子筛复合材料，并将其应用于芒果×大白菜的就地脱色反应。用氮气吸附-脱附、X射线衍射仪、扫描电子显微镜、透射电子显微镜和漂移-吡啶吸附等方法对所制备的复合材料进行了表征。CFP实验结果表明，ZSM-5在复合材料中是完全可达的。最重要的是，MCM-41起到了结焦牺牲层的作用，降低了ZSM-5的失活速率。
ZSM-5 is a promising catalyst for the catalytic fast pyrolysis (CFP) of biomass due to its high selectivity to light hydrocarbons. However, rapid deactivation of catalyst has been a major challenge towards the commercialization of CFP. The objective of our study is to evaluate the performance of MCM-41/ZSM-5 composites during the CFP of biomass. Here, for the first time, we report the synthesis of a unique MCM-41/ZSM-5 compositeviaa one-step, facile aerosol-based method. The composition of ZSM-5 in the composites was varied and the prepared composites were used as catalysts for thein-situandex-situCFP of miscanthus × gigantus. The prepared composites were characterized by N2adsorption-desorption, XRD, SEM, TEM and DRIFTS-pyridine adsorption. The results of CFP experiments demonstrated that ZSM-5 in the composites was fully accessible. Most importantly, MCM-41 acted as a sacrificial layer for coke deposition and decreased the deactivation rate of the ZSM-5.