This paper provides an updated and comprehensive review on the catalytic upgrading of biomass-derived pyrolysis vapours over metal-modified HZSM-5 catalyst into bio-aromatic hydrocarbons. The catalytic upgrading of biomass pyrolysis vapours seems to be a promising technology in generating gasoline-type bio-aromatic hydrocarbons, i.e. benzene, toluene and xylene (BTX). Biomass-derived raw pyrolysis oil has high oxygenated compounds that deteriorate pyrolysis oil properties and limits its applications. Metal modification of hydrogen exchanged Zeolite Socony Mobil Five (HZSM-5) catalyst has gained attention in a biomass pyrolysis research area due to the beneficial effects on upgrading the oxygenated pyrolysis vapours into BTX-enriched pyrolysis oils. The influence of metals (alkali and alkaline earth metals, transition metals and rare earth metals) as bi-functional or multifunctional activity on HZSM-5 catalyst during pyrolysis has been addressed. The effect of reaction temperature, the type of metals, metal contents, the silica-to-alumina ratio of catalyst and the catalyst-to-biomass ratio are critically discussed for maximum production of monocyclic aromatic hydrocarbons during the upgrading of pyrolysis vapours. Finally, concluding remarks on metal-modified zeolite catalyst and future recommendation in upgrading biomass pyrolysis vapours are presented.

本文提供了有关金属改性的HZSM-5催化剂将生物质衍生的热解蒸气催化转化为生物芳烃的最新综合综述。生物质热解蒸气的催化提质似乎是产生汽油型生物芳烃（即苯，甲苯和二甲苯（BTX））的有前途的技术。生物质衍生的原始热解油具有高含氧化合物，会降低热解油的性能并限制其应用。氢交换沸石美孚五号（HZSM-5）催化剂的金属改性因将含氧的热解蒸气升级为富含BTX的热解油而在生物质热解研究领域引起了关注。金属（碱金属和碱土金属，过渡金属和稀土金属）作为热解过程中HZSM-5催化剂的双功能或多功能活性已得到解决。关键讨论了反应温度，金属类型，金属含量，催化剂的硅铝比和催化剂生物量比的影响，以提高热解蒸气升级过程中单环芳烃的产量。最后，对金属改性沸石催化剂作了总结，并提出了改进生物质热解蒸气的未来建议。为了在热解蒸气升级过程中最大程度地生产单环芳烃，对催化剂的二氧化硅/氧化铝比和催化剂/生物质比进行了严格的讨论。最后，对金属改性沸石催化剂作了总结，并提出了改进生物质热解蒸气的未来建议。为了在热解蒸气升级过程中最大程度地生产单环芳烃，对催化剂的二氧化硅/氧化铝比和催化剂/生物质比进行了严格的讨论。最后，对金属改性沸石催化剂作了总结，并提出了改进生物质热解蒸气的未来建议。