摘要:
A rhodium catalyst containing supported rhodium metal omnipresent in the surface layer or in the neighborhood of the surface layer of the particles of a silica or titania type support is presented. This catalyst is prepared by a method (i) in which the support is dipped into an aqueous solution of a water-soluble rhodium salt previously adjusted to pH of at least 10, followed by the drying and reduction, or a method (ii) in which the support is first dipped into an aqueous solution of a water-soluble rhodium salt having a pH of 1 or less and, then, dipped into an aqueous alkaline solution containing an alkaline compound in an amount sufficient to neutralize the acid impregnated in the support and also sufficient to convert the rhodium salt impregnated in the support into rhodium hydroxide, followed by the drying and reduction.
摘要:
A rhodium catalyst containing supported rhodium metal omnipresent in the surface layer or in the neighborhood of the surface layer of the particles of a silica or titania type support is presented. This catalyst is prepared by a method (i) in which the support is dipped into an aqueous solution of a water-soluble rhodium salt previously adjusted to a pH of at least 10, followed by the drying and reduction, or a method (ii) in which the support is first dipped into an aqueous solution of a water-soluble rhodium salt having a pH of 1 or less and, then, dipped into an aqueous alkaline solution containing an alkaline compound in an amount sufficient to neutralize the acid impregnated in the support and also sufficient to convert the rhodium salt impregnated in the support into rhodium hydroxide, followed by the drying and reduction.
摘要:
A catalyst comprising a combination of rhodium, iridium and lithium supported on a carrier having a specific surface area of more than 150 m.sup.2 /g is disclosed for producing two carbon atom oxygenerated compounds from carbon monoxide. The catalyst has high catalytic activity and high selectivity to acetic acid.
摘要:
There is provided a method for producing a polypeptide using a recombinant baculovirus according to the present invention, wherein said recombinant baculovirus is constructed by ligating the untranslated region of 21 base pairs as set forth in SEQ ID NO:1 upstream of the lobster tropomyosin coding sequence wherein the level of expression of the polypeptide in the baculovirus is remarkably enhanced. There is also provided the polynucleotide sequence of 21 base pairs as set forth in SEQ ID NO:1 and the transfer vector containing the sequence, the recombinant baculovirus genome containing the sequence and the recombinant baculovirus containing the recombinant baculovirus genome to use in the above method.
摘要翻译:提供了使用根据本发明的重组杆状病毒产生多肽的方法,其中所述重组杆状病毒通过连接龙虾原肌球蛋白编码序列上游SEQ ID NO:1所示的21个碱基对的非翻译区而构建 其中多肽在杆状病毒中的表达水平显着提高。 还提供了如SEQ ID NO:1所示的21个碱基对的多核苷酸序列和含有该序列的转移载体,含有该序列的重组杆状病毒基因组和含有上述方法中使用的重组杆状病毒基因组的重组杆状病毒 。
摘要:
An acetic acid production catalyst that contains (b) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (c) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to a palladium-loaded catalyst, as well as an acetic acid and ethyl acetate production catalyst that contains (b) at least one compound selected from the group consisting of inorganic acids and salts thereof and/or (c) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (d) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to palladium.
摘要:
An acetic acid production catalyst that contains (b) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (c) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to a palladium-loaded catalyst, as well as an acetic acid and ethyl acetate production catalyst that contains (b) at least one compound selected from the group consisting of inorganic acids and salts thereof and/or (c) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (d) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to palladium.