选择性氧化巴豆醛合成巴豆酸中的方法:以巴豆醛为原料，以丙酮、乙酸、苯或甲苯为溶剂，磷钼酸为主催化剂，五氧化二钒为助催化剂，在反应温度30～100℃，压力0.3～0.9MPa条件下，通氧气反应合成巴豆酸。也可将磷钼酸负载到活性炭、SiO<SUB>2</SUB>、γ－Al<SUB>2</SUB>O<SUB>3</SUB>、分子筛等催化剂载体上，采用过滤方法将催化剂从反应液中分离出来，120℃下于空气中干燥3小时后可以循环使用。负载催化剂制备方便，成本较低，催化氧化活性高、选择性高、稳定性好，并且催化剂能多次循环使用。
浩瀚色谱（山东）应用技术开发有限公司，研制气相色谱法测定工业巴豆酸，分析效率高，结果满意。浩瀚色谱提供完整的分析方法。
名称:毛细管柱
规格:30m*0.32mm
型号:HH-crotonic acid-30
应用:工业巴豆酸的纯度分析
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