摘要:
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting a lower alkyl ether with carbon monoxide in the presence of a catalyst comprising mordenite and/or ferrierite, optionally including an additional framework metal such as gallium, boron and/or iron, under substantially anhydrous conditions. More specifically, methyl acetate is selectively produced by reaction of dimethyl ether with carbon monoxide in the presence of a catalyst comprising mordenite or ferrierite, under substantially anhydrous conditions.
摘要:
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting under substantially anhydrous conditions a lower alkyl ether with carbon monoxide in the presence of a zeolite catalyst having an 8-member ring channel which is interconnected with a channel defined by a ring with greater than or equal to 8 members, the 8-member ring having a window size of at least 2.5 Angstroms×at least 3.6 Angstroms and at least one Brønsted acid site and the zeolite having a silica:X2O3 ratio of at least 5, wherein X is selected from aluminum, boron, iron, gallium and mixtures thereof.
摘要翻译:包含低级脂族羧酸的低级烷基酯的产物是通过包括在基本上无水条件下使低级烷基醚与一氧化碳在具有8元环通道的沸石催化剂存在下反应的方法制得的,所述沸石催化剂与 通道由大于或等于8个构件的环限定,8元环的窗口尺寸至少为2.5埃至少为3.6埃和至少一个布朗斯台德酸位点,并且具有至少二氧化硅:X 2 O 3比的沸石 5,其中X选自铝,硼,铁,镓及其混合物。
摘要:
A product comprising a C1-C3 aliphatic carboxylic acid or corresponding ester is produced by a process comprising carbonylating a C1-C3 aliphatic alcohol or a corresponding ester with carbon monoxide in the presence of a.zeolite catalyst having an 8-member ring channel which is interconnected with a channel defined by a ring with greater than or equal to 8 members, the 8-member ring having a window size of at least 2.5 Angstroms×at least 3.6 Angstroms and at least one Brønsted acid site and the zeolite having a silica:X2O3 ratio of at least 5, wherein X is selected from aluminium, boron, iron, gallium and mixtures thereof with the proviso that the zeolite is not mordenite or ferrierite.
摘要翻译:包含C 1 -C 3脂族羧酸或相应的酯的产物通过包括在具有8元环通道的沸石催化剂存在下将C1-C3脂族醇或相应的酯与一氧化碳羰基化的方法来制备 与由具有大于或等于8个构件的环限定的通道相互连接,所述8元环的窗口尺寸至少为2.5埃至少为3.6埃和至少一个布朗斯台德酸位点,并且具有二氧化硅:X 2 O 3比例的沸石 至少为5,其中X选自铝,硼,铁,镓及其混合物,条件是沸石不是丝光沸石或镁碱沸石。
摘要:
A product comprising a C1-C3 aliphatic carboxylic acid or corresponding ester is produced by a process comprising carbonylating a C1-C3 aliphatic alcohol or a corresponding ester with carbon monoxide in the presence of a zeolite catalyst having an 8-member ring channel which is interconnected with a channel defined by a ring with greater than or equal to 8 members, the 8-member ring having a window size of at least 2.5 Angstroms×at least 3.6 Angstroms and at least one Brønsted acid site and the zeolite having a silica:X2O3 ratio of at least 5, wherein X is selected from aluminium, boron, iron, gallium and mixtures thereof with the proviso that the zeolite is not mordenite or ferrierite.
摘要:
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting a lower alkyl ether with carbon monoxide in the presence of a catalyst comprising mordenite and/or ferrierite, optionally including an additional framework metal such as gallium, boron and/or iron, under substantially anhydrous conditions. More specifically, methyl acetate is selectively produced by reaction of dimethyl ether with carbon monoxide in the presence of a catalyst comprising mordenite or ferrierite, under substantially anhydrous conditions.
摘要:
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting under substantially anhydrous conditions a lower alkyl ether with carbon monoxide in the presence of a zeolite catalyst having an 8-member ring channel which is interconnected with a channel defined by a ring with greater than or equal to 8 members, the 8-member ring having a window size of at least 2.5 Angstroms×at least 3.6 Angstroms and at least one Brønsted acid site and the zeolite having a silica:X2O3 ratio of at least 5, wherein X is selected from aluminum, boron, iron, gallium and mixtures thereof.
摘要:
A product comprising a lower alkyl ester of a lower aliphatic carboxylic acid is produced by a process comprising reacting a lower alkyl ether with carbon monoxide in the presence of a catalyst comprising mordenite and/or ferrierite, under substantially anhydrous conditions. More specifically, methyl acetate is selectively produced by reaction of dimethyl ether with carbon monoxide in the presence of a catalyst comprising mordenite or ferrierite, under substantially anhydrous conditions.
摘要:
Immobilized calixarenes and calixarene-related compounds are produced by a process comprising either: (a) contacting the calixarene or calixarene-related compound with a substrate containing one or more metallic or non-metallic oxides that has been surface modified by reaction with one or more polyhalides and/or polyalkoxides of an element capable of forming a stable aryloxide species with the substrate, or (b) reaction of such a substrate with a calixarene or calixarene-related compound that has been previously modified or derivatized by reaction with said polyhalides and/or polyalkoxides.
摘要:
Immobilized calixarenes and calixarene-related compounds are produced by a process comprising either: (a) contacting the calixarene or calixarene-related compound with a substrate containing one or more metallic or non-metallic oxides that has been surface modified by reaction with one or more polyhalides and/or polyalkoxides of an element capable of forming a stable aryloxide species with the substrate, or (b) reaction of such a substrate with a calixarene or calixarene-related compound that has been previously modified or derivatized by reaction with said polyhalides and/or polyalkoxides.
摘要:
A catalyst development engine (CDE) provides a rapid approach to the rational development of scalable heterogeneous catalysts and of high-performance solid materials. The CDE includes three main components: the testing cycle, the knowledge cycle, and the knowledge repository or database. The knowledge cycle generates working hypotheses relating performance to key catalyst properties via machine learning methods, computation chemistry and micro-kinetic modeling. Such an approach accelerates development and scale-up of new materials without the impediments introduced by conventional combinatorial approaches based on randomly selected materials.