Method for catalytically synthesizing epoxy fatty acid methyl ester by titanium silicalite molecular sieve

• Main Authors: ZHANG JIALIN, SUN PEIYONG, QIN YAN, YAO ZHILONG
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2013
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a cleaning technology for preparing epoxy fatty acid methyl ester by taking titanium silicalite molecular sieve as an oxidation catalyst and hydrogen peroxide as an oxidant, which can eliminate the waste water and caustic dross emission of the traditional technological route at the source. A synthesis method taking the titanium silicalite molecular sieve as the catalyst comprises the following specific steps: dropwise adding a certain amount of hydrogen peroxide into a fatty acid methyl ester and methyl alcohol mixture at a certain temperature; after reaction is performed for a certain time, filtering and separating out the titanium silicalite molecular sieve catalyst in a product, and recycling the catalyst; performing simple separation on the reaction product subjected to filtering of the catalyst, and dewatering an oil phase mixture through distillation, thereby obtaining epoxy fatty acid methyl ester products with low acid value and iodine value and high epoxy value; and after methy