Abstract Interactions between cellulose and lignin under catalytic pyrolysis condition were investigated to identify the impact of zeolite catalysts on products distributions. Thermogravimetric Analysis (TGA) and Pyrolysis-Gas Chromatography/Mass Spectroscopy (Py–GC/MS) were used to investigate cellulose-lignin interactions. The mixing ratio of cellulose and lignin was 1:1 and the pyrolysis temperature was 600 °C. The results showed that interactions did exist under both non-catalytic and catalytic pyrolysis condition. Decomposition of cellulose during catalytic co-pyrolysis was inhibited. For some research-focused products from cellulose, the interactions between cellulose and lignin under catalytic process all inhibited the formation of levoglucosan, but interactions under H-beta catalyst promoted the formation of furfural. Meanwhile, for lignin-derived products, the catalytic interactions all inhibited the formation of phenol and guaiacol with all the tested catalysts. This is opposite to the results from non-catalytic condition, where the cellulose-lignin interactions promoted the formation of phenol and guaiacol. A statistic method-correlation coefficient R was introduced to evaluate the interaction strength under different catalysts pyrolysis; strongest catalytic interaction was found when H-beta was used, followed by HZSM-5 and SAPO-34.

中文翻译：

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不同沸石催化剂催化热解过程中纤维素-木质素的相互作用

摘要 研究了催化热解条件下纤维素和木质素之间的相互作用，以确定沸石催化剂对产物分布的影响。热重分析 (TGA) 和热解-气相色谱/质谱 (Py-GC/MS) 用于研究纤维素-木质素相互作用。纤维素与木质素的混合比为1:1，热解温度为600℃。结果表明，在非催化和催化热解条件下确实存在相互作用。在催化共热解过程中纤维素的分解受到抑制。对于纤维素的一些研究重点产品，催化过程中纤维素和木质素之间的相互作用都抑制了左旋葡聚糖的形成，但在 H-β 催化剂下的相互作用促进了糠醛的形成。同时，对于木质素衍生产品，催化相互作用都抑制了苯酚和愈创木酚与所有测试催化剂的形成。这与非催化条件的结果相反，其中纤维素-木质素相互作用促进了苯酚和愈创木酚的形成。引入统计方法-相关系数R来评价不同催化剂热解作用下的相互作用强度；当使用 H-β 时发现了最强的催化相互作用，其次是 HZSM-5 和 SAPO-34。引入统计方法-相关系数R来评价不同催化剂热解作用下的相互作用强度；使用 H-β 时发现了最强的催化相互作用，其次是 HZSM-5 和 SAPO-34。引入统计方法-相关系数R来评价不同催化剂热解作用下的相互作用强度；当使用 H-β 时发现了最强的催化相互作用，其次是 HZSM-5 和 SAPO-34。