Abstract Thermal decomposition of cellulose was carried out in a tubular reactor under flowing argon gas at 573, 673 and 773 K. The loss of carbon, hydrogen and oxygen was observed, and enhanced with increase in temperature continuously. The persistent free radicals (PFRs) were not observed in the sample decomposed at the lowest temperature of 573 K, and observed in the samples decomposed at higher temperatures of 673 and 773 K. This incontinuous trend was discussed from viewpoints of radical formation and its stabilization during the thermal decomposition. An empirical correlation between PFR density and residual carbon amount was proposed.

中文翻译：

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热分解纤维素中形成的持久性自由基 (PFR) 的定量及其与残留碳量的相关性

摘要 纤维素在管式反应器中在573、673和773 K的氩气下进行热分解。观察到碳、氢和氧的损失，并随着温度的不断升高而增加。在最低温度 573 K 分解的样品中未观察到持久性自由基 (PFRs)，而在 673 和 773 K 的较高温度下分解的样品中观察到持久性自由基 (PFRs)。从自由基形成及其稳定性的角度讨论了这种不连续的趋势在热分解过程中。提出了 PFR 密度和残留碳量之间的经验相关性。