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首页> 外文期刊>Catalysis science & technology >Recent progress on upgrading of bio-oil to hydrocarbons over metal/zeolite bifunctional catalysts
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Recent progress on upgrading of bio-oil to hydrocarbons over metal/zeolite bifunctional catalysts

机译：最近的进展生物燃油的升级碳氢化合物在金属/沸石双官能催化剂

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摘要

Upgrading of bio-oil is of high necessity and popularity in converting biomass to high-quality hydrocarbons (transportation fuels and petrochemicals) to reduce the overall CO2 emissions of fossil based materials. There are hundreds of different oxygenated compounds identified in bio-oil, resulting in a high oxygen content (30% to 50%). This review focuses on recent progress in the upgrading of bio-oil over metal/zeolite bifunctional catalysts, with model compounds and real bio-oil included. Firstly, typical model compounds and corresponding reaction routes are summarized, based upon the composition of the bio-oil and a basic knowledge of chemical reactions. Secondly, careful analyses are conducted on the deoxygenation mechanisms over different metal active centers and acid-catalyzed reactions, such as isomerization and cracking, over zeolitic acid sites, respectively. Moreover, detailed analyses have focused on the effect of metal loadings on zeolites, the effects of zeolitic porosity and acidity on the metal, and their overall effects on reaction activity, selectivity and stability. Thirdly, the fundamental understanding of the interaction between the metal centers and zeolite acid sites in bifunctional catalysts and their influences on complex reaction networks, including deoxygenation and acid-catalyzed reactions, is analyzed. The metal/acid balance may be the key in improving the catalytic activity and product selectivity in the upgrading of bio-oil, which needs further careful design. Finally, the potential challenges and opportunities for the upgrading of bio-oil over metal/zeolite bifunctional catalysts are outlined.
机译：升级生物燃油的必要性和高在将生物质转化为高质量的碳氢化合物(运输燃料和石化)可以降低整体的二氧化碳基于排放的化石材料。数百种不同的含氧化合物在生物识别,导致高氧内容(30%到50%)。升级最新进展的生物金属/沸石双功能催化剂,与模型化合物和真正的生物包括在内。典型的模型化合物和相应的反应路线进行了总结,根据生物油的组成和基本知识的化学反应。进行脱氧作用机制在不同金属活性中心和催化反应,如异构化和开裂,沸石的酸性网站,分别。专注于金属载荷的影响沸石、沸石的孔隙度的影响酸性金属,和他们的整体效果反应活性、选择性和稳定性。第三,基本的理解金属中心之间的交互和沸石在双功能催化剂及其酸网站影响复杂反应网络,包括脱氧和催化反应,进行了分析。可以提高催化的关键吗活动和产品选择性升级需要进一步的生物油、精心设计。最后,潜在的挑战和生物的升级的机会金属/沸石双功能催化剂概述了。

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