The invention relates to catalytically producing formic acid and regenerating the catalyst used in the process. A vanadyl ion, vandate ion, or polyoxometallate ion, which is used as the catalyst, of the general formula [PMoxVyO40]n− is brought into contact with an alpha hydroxyl aldehyde, an alpha hydroxy carboxylic acid, a carbohydrate, a glycoside, or a polymer, which contains a carbon chain and which comprises at least two OH groups bonded as substituents to the carbon chain as a substituent in a repeating manner and/or an O, N, or S atom contained in the carbon chain in a repeating manner, in a liquid solution (12) in a vessel (10) at a temperature above 70° C. and below 160° C., wherein 6≤x≤11, 1≤y≤6, 3
本发明涉及催化生产
甲酸和再生工艺中使用的催化剂。将用作催化剂的通式为[PMoxVyO40]n-的
钒基离子、
钒酸盐离子或聚
氧化金属离子与α-羟基醛、α-羟基
羧酸、
碳水化合物、糖苷或聚合物接触、在温度高于 70° C 和低于 160° C 的容器 (10) 中的液体溶液 (12) 中,使其与含有碳链的 α-羟基醛、α-羟基
羧酸、
碳水化合物、糖苷或聚合物接触。温度低于 160 摄氏度、其中6≤x≤11,1≤y≤6,3
Method for separating formic acid from a reaction mixture by means of extraction
申请人:OXFA GMBH
公开号:US10689320B2
公开(公告)日:2020-06-23
The invention relates to a method for separating formic acid from a reaction mixture by means of extraction, wherein, in addition to the formic acid, the reaction mixture comprises a polyoxometalate ion of general formula [PMoxVyO40]n− as a catalyst and a solvent that dissolves the catalyst, wherein 6≤x≤11, 1≤6, x+y=12 and 3
本发明涉及一种通过萃取从反应混合物中分离
甲酸的方法,其中除
甲酸外,反应混合物还包括通式为[PMoxVyO40]n-的多氧
金属离子作为催化剂和溶解催化剂的溶剂,其中6≤x≤11,1≤6,x+y=12和3
正十六烷基)甲酰胺、N-二正乙酰胺或 N,N-二烷基甲酰胺,其中 N,N-二烷基甲酰胺在与溶剂混合时在溶剂和萃取剂之间形成相界。
Utilization of an extracting agent as antifoaming agent in the production of anhydrous formic acid
申请人:——
公开号:US20030009057A1
公开(公告)日:2003-01-09
The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula I
1
where the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3 is hydrogen or a C1-C4-alkyl group,
is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.
本发明涉及一种获得无
水或基本无
水甲酸的工艺,在该工艺中,在加工过程中,通式 I 的化合物
1
其中基团 R1 和 R2 为烷基、环烷基、芳基或芳烷基,或 R1 和 R2 与 N 原子共同构成杂环 5 或 6 元环,且其中只有一个基团为芳基,R3 为氢或 C1-C4 烷基、
可同时用作
甲酸萃取剂和蒸馏过程中的
消泡剂。
Method for producing anhydrous formic acid
申请人:——
公开号:US20030018216A1
公开(公告)日:2003-01-23
The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that—before the hydrolysis of the methyl formate—the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.
本发明涉及一种获得无
水或基本无
水甲酸的工艺,在该工艺中,首先通过
水解
甲酸甲酯生产
甲酸水溶液,
甲酸甲酯中的
甲醇含量事先已被降低。根据本发明的工艺有一个特点,即在
水解
甲酸甲酯之前,先在蒸馏塔中降低含
甲醇甲酸甲酯中的
甲醇含量,在
甲酸的加工过程中,该蒸馏塔还同时用于其他分离功能。
查看更多