三甲基氢醌

直接氧化法合成维生素E中间体2,3,5-三甲基氢醌

Synthesis of 2,3,5-Trimethylhydroquinone ( the Intermediate of Production Vitamin E ) by Direct Oxidation

化学法合成维生素E基本都采用异植物醇与2，3，5-三甲基氢醌经缩合、酯化反应来合成。

Absract : Isophytol and2,3,5-trimethylhydroquinone are basic raw materials in the chemical synthesis of Vitamin E.

Pt/Al2O3催化合成2,3,5-三甲基氢醌连续工艺的研究

Study on the continuous process for synthesizing 2,3,5-Trimethylhydroquinone with pd / al_2o_3 catalyst

Pd/Al2O3催化合成2,3,5-三甲基氢醌的连续工艺（Ⅱ）&催化剂的载体、焙烧温度和活性组分分布类型的选择

The continuous process for synthesizing 2,3,5-trimethylhydroquinone over Pd / Al_2O_3 catalyst (ⅱ) & selection of the supports , the calcination temperature and the type of active component distribution of catalysts

2,3,5-三甲基氢醌连续合成工艺中失活催化剂的表征

Characterization of deactivated catalysts in continuous process for synthesizing 2,3,5-trimethylhydroquinone

2,3,5-三甲基氢醌的合成及其质量的影响因素

Synthesis of 2,3,5-trimethylhydroquinone and factors influencing its quality

2,3,5-三甲基氢醌的气相色谱测定

Gas chromatographic determination of 2,3 , 5-Trimethylhydroquinone

采用负载贵金属（Pd和Pt）的催化剂，通过固定床连续工艺将2,3,5-三甲基苯醌（TMBQ）催化加氢合成得到2,3,5-三甲基氢醌（TMHQ）。

Trimethylhydroquinone ( TMHQ ) was synthesized by catalytic hydrogenation of 2,3,5 trimethylbenzoquinone ( TMBQ ) over supported noble metal ( Pd or Pt ) catalysts in fixed bed continuous processes .