《Table S1Hydrodemethoxylation of other phenolic monomers in a batch reactor.》

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《催化一步转化木质素单体为苯酚:建立木质素到高附加值化学品的通道（英文）》

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Reaction conditions:2 ml n-hexane，substrate 1 mmol，Pt/C 20 mg，H2 5 bar，340°C，2 h.

Further efforts to optimize the Pt/C catalyst were made.One important parameter in flow rate reactions is the contact time between catalyst and substrate，given by the weight‐to‐feed ratio（W/F，mass of catalyst over mass flow rate）.We evaluated a series of W/F values，ranging from 0.1 to 0.25 h，by changing the loading of Pt/C catalyst（Fig.S1）.Not unexpectedly，the conversion tends to increase with the increase of W/F，at an expense of decreased selectivity to 4‐propylphenol.A W/F of0.15 h was the best compromise between conversion and se‐lectivity，at which point 84%conversion and 94%selectivity were achieved，providing a 4‐propylphenol yield of ca.80%.A time on stream study was conducted at 350°C，purposely se‐lected to have a lower initial conversion than that obtained at400°C（Fig.S2）.As can be seen，conversion and selectivity in‐creased during the first 2 h and stabilized thereafter.Encour‐agingly，there was no sign of deactivation under the applied conditions for at least 4 h.The reaction could also be conducted in a batch reactor at slighter lower temperature.Other sub‐strates，including2‐methoxy‐4‐ethylphenoland4‐methyl‐2，6‐dimethoxyphenol，wereconvertedinto20%–50%alkylphenol under non‐optimized conditions，sug‐gesting that the catalytic system developed is applicable to other types of lignin monomers and should be applicable to convert a mixture of lignin monomers（Table S1）.