| ประโยคภาษาจีน : 中文句子 | 
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|  duì běn èr fēn对苯二酚  hé和  jiǎ chún甲醇  zài在  nóng浓  liú suān硫酸  hé和  duì běn kūn对苯醌  cuī huà催化  xià下  zhì制  dé得  jiǎ yǎng jī甲氧基  fēn酚  chǎn产  lǜ率  wèi为 | 
| In this work, the 4-methoxyphenol was prepared from hydroquinone, methanol which were catalyzed by benzoquinone and concentrated sulphuric acid. The yield of 4-methoxyphenol was 80%. |