This paper reports the progress of catalysts for improving the hydrocarbon compounds in bio-oil obtained from catalytic pyrolysis of biomass. In addition, the effects of the other operating conditions, such as temperature, type of biomass, heating rate, vapors residence time, carrier gas, and hydrogen donor on the yield and properties of bio-oil have been briefly explored. Temperature and catalysts type were found to have major impact on the bio-oil yield and quality. TGA-DTA analysis of biomass revealed that major biomasses pyrolysis zone for high bio-oil yield is in the range of 400–600 °C. Pilot, semi-pilot and large-scale units reported an average temperature of 500 °C for pyrolysis of biomass. The development of advanced catalysts such as zeolite-based catalysts, supported transition and noble metal catalysts, and metal oxide catalysts have been designed to remove the undesired compounds and to increase the hydrocarbon yield in bio-oil. Noble metal supported catalysts produced bio-oil with a low content of oxygenated compounds compared to non-noble metal catalysts; however, their cost and accessibility favor the utilization of non-noble metal supported catalysts.

本文报道了用于改进生物质催化热解获得的生物油中烃类化合物的催化剂的进展。此外，还简要探讨了其他操作条件，例如温度，生物质类型，加热速率，蒸气停留时间，载气和氢供体对生物油收率和性能的影响。发现温度和催化剂类型对生物油的产量和质量有重大影响。TGA-DTA对生物质的分析表明，高生物油产量的主要生物质热解区范围为400–600°C。中试，半试和大型装置报告的生物质热解平均温度为500°C。开发先进的催化剂，例如沸石基催化剂，负载型过渡催化剂和贵金属催化剂，已经设计了金属氧化物催化剂和金属氧化物催化剂以除去不需要的化合物并增加生物油中的烃产率。与非贵金属催化剂相比，贵金属负载催化剂生产的生物油含氧化合物含量低。然而，它们的成本和可及性有利于使用非贵金属负载的催化剂。