Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal do Rio Grande do Norte, AvenueNélio Tavares, 1024, Nova Descoberta., Natal, RN, 59056-590, Brazil.
Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil.
Environ Sci Pollut Res Int. 2019 Feb;26(6):5983-5989. doi: 10.1007/s11356-018-4003-x. Epub 2019 Jan 6.
Biomass has attracted considerable attention as energy, economic, and environmental asset, as result of its abundance and range of properties. The use of mesoporous catalysts during fast pyrolysis has been a highly important route to improve efficiency as well adding value to biomass. The addition of titanium to molecular sieves increases the efficiency of the pyrolysis reaction by improving production and selectivity of products of interest. This study aims at analyzing the catalytic pyrolysis products of elephant grass using titanium catalysts prepared at different Si/Ti molar ratios, i.e., 25 and 50. The material was supported on MCM-41 for the catalytic pyrolysis of biomass. The biomass pyrolysis reactions were performed in a micropyrolyzer coupled to a GC/MS analyzer. The Ti-MCM-41 samples were characterized by XRD, BET-specific area, and UV-visible. The distribution of pyrolysis products depended on process parameters such as temperature and catalyst type. The highest yield for hydrocarbon production, such as styrene, benzene, methylbenzene, and naphthalene, was observed at 600 °C using Si/Ti equal to 50.
生物质作为能源、经济和环境资产引起了相当大的关注，因为它具有丰富的储量和广泛的特性。在快速热解过程中使用中孔催化剂是提高效率以及增加生物质附加值的重要途径。将钛添加到分子筛中可以通过提高感兴趣产品的产量和选择性来提高热解反应的效率。本研究旨在分析使用不同 Si/Ti 摩尔比（即 25 和 50）制备的钛催化剂对象草的催化热解产物。该材料被负载在 MCM-41 上，用于生物质的催化热解。生物质热解反应在与 GC/MS 分析仪耦合的微热解器中进行。Ti-MCM-41 样品通过 XRD、BET 比表面积和 UV-visible 进行了表征。热解产物的分布取决于温度和催化剂类型等工艺参数。使用 Si/Ti 等于 50 时，在 600°C 下观察到芳烃类如苯乙烯、苯、甲苯和萘的产率最高。
