In this work, the catalytic effect of titanium dioxide (TiO₂) on the online fast pyrolysis of cellulose was investigated using a tandem micro reactor coupled to a gas chromatograph-mass spectrometer (GC-MS) system. This system was used in the following two different modes: in-situ and ex-situ. The results obtained with TiO₂ were compared with those of zeolite (HZSM-5) under identical pyrolysis conditions. Levoglucosan was the major product in the non-catalytic pyrolysis of cellulose. As for the catalytic pyrolysis of cellulose at 500 °C with TiO₂ (in-situ), the peak of levoglucosan disappeared whereas aromatic hydrocarbons such as benzene, toluene and naphthalene were newly detected. In this case, oxygenated compounds such as furfural, furan, methylfuran were still observed for TiO₂ whereas oxygenated compounds (i.e, furan, benzofuran, methylbenzofuran, acetone and 2-butanone) with low yields were observed for in-situ catalytic pyrolysis with HZSM-5. For ex-situ catalytic pyrolysis of cellulose at 500 °C using TiO₂, oxygen-containing compounds were hardly formed, while various aromatic hydrocarbons were detected. When the ex-situ pyrolysis of cellulose with HZSM-5 was carried out, the yields of the aromatic hydrocarbons were comparable to those with TiO₂.

在这项工作中，使用串联微型反应器与气相色谱-质谱仪（GC-MS）耦合，研究了二氧化钛（TiO ₂）对纤维素在线快速热解的催化作用。该系统以以下两种不同的模式使用：原位和异位。在相同的热解条件下，将TiO ₂与沸石（HZSM-5）的结果进行了比较。左旋葡聚糖是纤维素的非催化热解的主要产物。至于TiO ₂（原位催化在500°C下纤维素的催化热解。），左葡聚糖的峰消失了，而新发现了苯，甲苯和萘等芳香烃。在这种情况下，仍观察到TiO ₂仍被氧化为糠醛，呋喃，甲基呋喃等氧化化合物，而使用HZSM进行原位催化热解时发现产率较低的氧化化合物（即呋喃，苯并呋喃，甲基苯并呋喃，丙酮和2-丁酮）。-5。为了使用TiO ₂在500℃下对纤维素进行异位催化热解，几乎不形成含氧化合物，同时检测到各种芳族烃。当易地用HZSM-5进行纤维素的热解，所述芳族烃的产率比得上那些有TiO₂。