| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: present invention relates to a method of preparing a catalyst or procatalyst suitable for use in production of alkenylalkanoates, to a catalyst composition for production of alkenylalkanoates and to a method of producing alkenylalkanoates. The invention describes a method of preparing a catalyst or procatalyst which involves bringing at least one solution of a catalyst component precursor which contains palladium or gold into contact with support material, where at least one solution of the catalyst component precursor is an aqueous solution which contains one or more of Pd(NH3)2(NO2)3, Pd(NH3)4(OH)2, Pd(NH3)4(NO3)2, Pd(NH3)4(OAc)2, Pd(NH3)2(OAc)2, Pd(NH3)4(HCO3)2) and of NaAuO2, KAuO2, NMe4AuO2 and HAu(NO3)4 in nitric acid or their combinations and reduction of palladiuim or gold when the reducing medium is brought into contact with the support material. The invention describes a catalyst composition which contains support material containing at least palladium and gold which is brought into contact with the support material to obtain a catalyst or procatalyst using the method described above. Described also is a method of producing alkenylalkanoates which involves bringing starting material which contains alkene, alkanoic acid and oxidising agent into contact with a catalyst or procatalyst described above. ^ EFFECT: reduced amount of by-products and more efficient production of alkenylalkanoates. ^ 32 cl, 6 tbl, 15 ex |
