Supercritical water gasification of guaiacol as a model compound for lignin was conducted in quartz reactors. The formation and degradation pathways of intermediates were discussed. The results show that the gasification efficiency of guaiacol in supercritical water increased as the reaction time increased. The intermediates in the residual liquid consisted mainly of phenols, arenes, cyclopentanones, alcohols and organic acids. Phenols and arenes were difficult to be gasified in supercritical water and easily turned into char and tar while cyclopentanones, alcohols and organic acids could be easily gasified and turn into hydrogen-rich gas. The Ru/Al₂O₃ catalyst promoted the degradation of phenols and arenes and thus inhibited the formation of char and tar.

愈创木酚作为木质素的模型化合物的超临界水气化在石英反应器中进行。讨论了中间体的形成和降解途径。结果表明，愈创木酚在超临界水中的气化效率随反应时间的增加而增加。残留液体中的中间体主要由苯酚，芳烃，环戊烷，醇和有机酸组成。苯酚和芳烃很难在超临界水中气化，并且很容易变成焦炭和焦油，而环戊烷，醇和有机酸则很容易气化并变成富氢气体。Ru / Al ₂ O ₃催化剂促进了苯酚和芳烃的降解，从而抑制了焦炭和焦油的形成。