当前位置: 首页 > 文章 > 固体超强酸SO_4~(2-)/ZrO_2-TiO_2催化合成α-萘乙酸甲酯 农药 2007,46 (6) 372-373+384
Position: Home > Articles > Synthetic Method of Methyl 1-Naphthylacetate on Complex Solid Super Acid Catalyst SO_4~(2-)/ZrO_2-TiO_2 Agrochemicals 2007,46 (6) 372-373+384

固体超强酸SO_4~(2-)/ZrO_2-TiO_2催化合成α-萘乙酸甲酯

作  者:
吴洪特;于兵川;葛胜祥
单  位:
长江大学化学与环境工程学院
关键词:
固体超强酸;α-萘乙酸甲酯;催化剂;合成
摘  要:
采用固体超强酸SO42-/ZrO2-TiO2为催化剂,α-萘乙酸和甲醇为原料,结合甲醇精馏回收工艺,合成了α-萘乙酸甲酯(MENA)。催化剂制备和MENA合成最佳工艺条件为:硫酸浸渍液浓度为0.5~0.55mol/L,焙烧温度550℃~600℃,焙烧时间4.0h,催化剂用量为2.0%~2.5%(占总投料量质量分数),甲醇与萘乙酸投料比为7.0∶1(体积比),回流反应,反应时间2.5h,产品收率达93.6%,催化剂重复使用7次,其产品收率仍在90%以上,催化剂再生容易。
译  名:
Synthetic Method of Methyl 1-Naphthylacetate on Complex Solid Super Acid Catalyst SO_4~(2-)/ZrO_2-TiO_2
作  者:
WU Hong-te,YU Bing-chuan,GE Sheng-xiang (College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou 434023,Hubei,China)
关键词:
solid super acid; methyl 1-naphthylacetate; catalyst; synthesis
摘  要:
A complex catalyst system SO42-/ZrO2-TiO2 was prepared and used in the reaction for the synthesis of methyl 1-naphthylacetate (MENA) with the material of naphthylacetic acid and methanol and the process of methanol distillation recovery. The optimal conditions were as follows: the concentration sulphuric acid impregnation solution 0.5-0.55 mol/L,calcinations temperature 550-600 °C,calcinations time 4.0 h,catalyst dosage 2.0-2.5% (the mass fraction of the total material),ratio of methanol and naphthylacetic acid was 7.0∶1,reflux reaction time about 1.5 h,the yield of ester is 93.6%,after the catalyst reuse seven times,the yield of ester is above 90%. The catalyst regenerative is easy.

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