首页>
外国专利>
SILICON OXIDE BASED SUPPORT, HETEROPOLYACID CATALYST BASED ON SAID SUPPORT AND SYNTHESIS OF ESTERS IN PRESENCE OF HETEROPOLYACID CATALYST DEPOSITED ON SILICON OXIDE
SILICON OXIDE BASED SUPPORT, HETEROPOLYACID CATALYST BASED ON SAID SUPPORT AND SYNTHESIS OF ESTERS IN PRESENCE OF HETEROPOLYACID CATALYST DEPOSITED ON SILICON OXIDE
FIELD: chemistry.;SUBSTANCE: invention relates to an improved method for synthesis of an ester through reaction of 1-olefin with a monobasic carboxylic acid and water in vapour phase in the presence of a heteropolyacid catalyst on silica gel, in which the silica gel support is in from of granules treated with water vapour at temperature between 100 and 300°C for a period of time between 0.1 to 200 hours, before or simultaneously with application of the heteropolyacid onto the support. The invention also relates to a heteropolyacid catalyst deposited on silica gel and to a method of preparing the catalyst, where the support is obtained by treating silica gel granules with water vapour at temperature between 100 and 300°C for a period of time between 0.1 and 200 hours, before or simultaneously with application of the heteropolyacid onto the support.;EFFECT: use of the said catalyst in the ester synthesis method through reaction of 1-olefin with a monobasic carboxylic acid and water in vapour phase enables to reduce content of methyl ethyl ketone in products.;43 cl, 1 ex
展开▼
机译:杂酸催化剂在硅胶上通过1-烯烃与一元羧酸和水在气相中反应合成酯的改进方法,其中硅胶在将杂多酸施加到载体上之前或同时,将载体用水和水蒸气在100至300°C之间的温度处理0.1至200小时。本发明还涉及沉积在硅胶上的杂多酸催化剂和制备该催化剂的方法,其中通过在100至300℃的温度下用水蒸气在0.1至200℃的温度下处理硅胶颗粒来获得载体。在将杂多酸施加到载体上之前或同时进行200小时;效果:通过1-烯烃与一元羧酸和水在蒸汽中的反应,在酯合成方法中使用所述催化剂可以降低甲基的含量产品中的乙基酮;; 43 cl,1 ex
展开▼