選擇性氧化巴豆醛合成巴豆酸中的方法:以巴豆醛為原料，以丙酮、乙酸、苯或甲苯為溶劑，磷鉬酸為主催化劑，五氧化二釩為助催化劑，在反應(yīng)溫度30～100℃，壓力0.3～0.9MPa條件下，通氧氣反應(yīng)合成巴豆酸。也可將磷鉬酸負(fù)載到活性炭、SiO<SUB>2</SUB>、γ－Al<SUB>2</SUB>O<SUB>3</SUB>、分子篩等催化劑載體上，采用過(guò)濾方法將催化劑從反應(yīng)液中分離出來(lái)，120℃下于空氣中干燥3小時(shí)后可以循環(huán)使用。負(fù)載催化劑制備方便，成本較低，催化氧化活性高、選擇性高、穩(wěn)定性好，并且催化劑能多次循環(huán)使用。

　　浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，研制氣相色譜法測(cè)定工業(yè)巴豆酸，分析效率高，結(jié)果滿意。浩瀚色譜提供完整的分析方法。

　　名稱:毛細(xì)管柱

　　規(guī)格:30m*0.32mm

　　型號(hào):HH-crotonic acid-30

　　應(yīng)用:工業(yè)巴豆酸的純度分析

　　The method for selective oxidation of crotonaldehyde to synthesize crotonal acid: using crotonaldehyde as raw material, acetone, acetic acid, benzene or toluene as solvents, phosphomolybdic acid as the main catalyst, vanadium pentoxide as a co catalyst, under the reaction temperature of 30-100 ℃ and pressure of 0.3-0.9 MPa, crotonal acid is synthesized by reacting with oxygen. Phosphomolybdic acid can also be loaded onto activated carbon, SiO<SUB>2</SUB> γ－ On catalyst supports such as Al<SUB>2</SUB>O<SUB>3</SUB>, molecular sieves, etc., the catalyst is separated from the reaction solution by filtration method. After drying in air at 120 ℃ for 3 hours, it can be recycled. The preparation of loaded catalysts is convenient, with low cost, high catalytic oxidation activity, high selectivity, good stability, and the catalyst can be reused multiple times.

　　Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed a gas chromatography method for the determination of industrial crotonic acid, which has high analytical efficiency and satisfactory results. Haohan chromatography provides a complete analytical method.

　　Name: Capillary Column

　　Specification: 30m * 0.32mm

　　Model: HH crotonic acid-30

　　Application: Purity analysis of industrial crotonic acid