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CATALYST PERFORMANCE IN PROPYLENE EPOXIDATION
CATALYST PERFORMANCE IN PROPYLENE EPOXIDATION
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机译:丙烯环氧化中的催化剂性能
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摘要
The present disclosure relates to a method of epoxidizing an olefin to form an epoxide, the method comprising contacting an alkene(C≦12) or aralkene(C≦12) with a titanium silica catalyst, a peroxide, a buffer, and one or more organic solvents in a reaction mixture, wherein the one or more organic solvents comprise a first organic solvent selected from:; R1—OH (I),; R2—CN (II),; R3—C(O)—R4 (III) or; R5—O—R6 (IV)wherein:R1 is alkyl(C≦12), aryl(C≦12), aralkyl(C≦12) or a substituted version of any of these groups;R2 is alkyl(C≦12), aryl(C≦12), aralkyl(C≦12) or a substituted version of any of these groups;R3 is hydrogen, alkyl(C≦6) or substituted alkyl(C≦6); andR4, R5, and R6 are each independently selected from alkyl(C≦12), aryl(C≦12), aralkyl(C≦12) or a substituted version of any of these groups, or are taken together are alkoxydiyl(C≦12), alkanediyl(C≦12), substituted alkoxydiyl(C≦12) or substituted alkanediyl(C≦12).展开▼
机译:本公开涉及一种使烯烃环氧化以形成环氧化物的方法,该方法包括使烯烃(C≤12) Sub>或芳烃(C≤12) Sub>与烯烃接触。钛二氧化硅催化剂,过氧化物,缓冲剂和一种或多种有机溶剂在反应混合物中,其中一种或多种有机溶剂包括选自以下的第一有机溶剂: <?in-line-formulae description =“在线表达式” end =“ lead”?> R 1 Sub> -OH(I),<?in-line-formulae description =“在线公式“ end =“ tail”?>; <?in-line-formulae description =“在线表达式” end =“ lead”?> R 2 Sub> -CN(II),<?in-line-formulae description =“在线公式“ end =“ tail”?>; <?in-line-formulae description =“在线表达式” end =“ lead”?> R 3 Sub> -C(O)-R 4 Sub>(III)或<?in-line-formulae description =“在线公式” end =“ tail”?>; <?in-line-formulae description =“在线表达式” end =“ lead”?> R 5 Sub> —O-R 6 Sub>(IV)<?in- line-formulae description =“ In-line Formulae” end =“ tail”?> 其中: ListItem> R 1 Sub>是烷基(C≦12) Sub>,芳基(C≦12) Sub>,芳烷基(C≦12) Sub>或这些基团中的任何一个的取代版本; ListItem> R 2 Sub>是烷基(C≦12) Sub>,芳基(C≦12) Sub>,芳烷基(C≦12) Sub>或a这些基团中的任何一个的取代版本; ListItem> R 3 Sub>是氢,烷基(C≦6) Sub>或取代的烷基(C≤6) Sub>;和 ListItem> R 4 Sub>,R 5 Sub>和R 6 Sub>各自独立地选自烷基(C≤12) Sub>,芳基(C≤12) Sub>,芳烷基(C≤12) Sub>或取代的版本这些基团中的任何一个或一起是烷氧基二基(C≤12) Sub>,烷二基(C≤12) Sub>,取代的烷氧基二基(C≤12)< / Sub>或取代的烷二基(C≦12) Sub>。 ListItem> UnorderedList>
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