The aim of this work is to exploit the pyrolysis characteristics of microalgae Botryococcus braunii (BB) with a medium pore framework zeolite (MCM-22) and its delaminated counterpart with a higher external surface area zeolite (ITQ-2) using pyrolysis-gas-chromatography-mass-spectrometry (Py-GC/MS) and a fixed-bed reactor. The study evaluates the effect of synthesized zeolites that possess different pore size, shape and acidity on promoting deoxygenation reactions and producing aromatic compounds during the pyrolysis of microalgae. Further, the role of the shape of zeolites (layered & delaminated) for carbohydrate, protein and lipid-derived compounds formation is discussed. The Py-GC/MS results showed that the aromatic compounds (area%) was significantly higher (35.17 %) for delaminated & (28.76 %) for layered zeolites than non-catalytic pyrolysis (17.85 %) at the catalyst/biomass ratio of 10.1. The increase in catalyst/biomass ratio from 3 to 10 at 550 °C has increased the aromatics (90.66 % for ITQ-2 & 75.25 %) for MCM-22 zeolites. In addition, ITQ-2 zeolite produced 20.47 % higher aromatics than MCM-22 zeolites which is attributed to the thinner delaminated structure of ITQ-2 that makes reactants more accessible to the catalytic site and accelerate the deoxygenation reactions.

这项工作的目的是利用微藻的Botryococcus braunii的热解特性。（BB）具有中孔骨架沸石（MCM-22）及其分层的对应物，具有较高的外表面积沸石（ITQ-2），采用热解-气相色谱-质谱（Py-GC / MS）和固定床反应器。研究评估了具有不同孔径，形状和酸度的合成沸石在微藻热解过程中促进脱氧反应和产生芳族化合物的作用。此外，还讨论了沸石形状（分层和分层）对碳水化合物，蛋白质和脂质衍生化合物的形成的作用。Py-GC / MS结果表明，在催化剂/生物质比为10.1的情况下，分层催化剂的分层中芳族化合物（面积％）（38.76％）明显，层状沸石的芳族化合物（面积％）（17.85％）高得多。 。催化剂/生物质比在550°C时从3增加到10，增加了MCM-22沸石的芳烃含量（ITQ-2为90.66％，75.25％）。另外，ITQ-2沸石产生的芳烃比MCM-22沸石高20.47％，这归因于ITQ-2较薄的分层结构，使反应物更易于进入催化部位并加速脱氧反应。