Reaction of hardwood lignin with hydrogen
Reaction of hardwood lignin with hydrogen
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DOI：
10.1021/ja01273a056
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发表时间：
1938-01-01
影响因子：
15
通讯作者：
Adkins, H
中科院分区：
文献类型：
--
作者：
Harris, EE;D'Ianni, J;Adkins, H
发现木质素与氢在铜-铬氧化物上反应，每25克木质素吸收1摩尔氢。木质素。反应在二氧六环溶液中于250-260 ℃、200-350大气压氢气下进行约18小时。反应产物的混合物为无色或淡黄色。由氢化80 g.的硬木木质素22 g。甲醇，9 g。酒精，bp 92-95（7 mm），约3g。二醇，bp 107-110（1 mm），20克。二醇，bp 125-127（1 mm），18克。的化合物的混合物，bp 130（1 mm.）至260（1 mm），4 g。的中间级分和5g.沸点高于260（1毫米）的化合物。该醇已被鉴定为4-re-propyl-cyclohexanol-1，（I）。二醇的OH OH OH分析
Lignin was found to react with hydrogen over copper-chromium oxide, absorbing one mole of hydrogen for each 25 g. of lignin. The reaction takes place in dioxane solution at 250-260 under 200-350 atmospheres of hydrogen during a period of about eighteen hours. The mixture of prod-ucts of the reaction is colorless or faintly yellow. There was obtained from the hydrogenation of 80 g. of hardwood lignin 22 g. of methanol, 9 g. of an alcohol, bp 92-95 (7 mm.), about 3 g. of a glycol, bp 107-110 (1 mm.), 20 g. of a glycol, bp 125-127 (1 mm.), 18 g. of a mixture of com-pounds, bp 130 (1 mm.) to 260 (1 mm.), 4 g. of intermediate fractions and 5 g. of compounds boiling above 260 (1 mm.). The alcohol has been identified as 4-re-propyl-cyclohexanol-1,(I). The analysis of the glycols for OH OH OH