5.
    发明专利
    未知

    公开(公告)号:FR2540105A1

    公开(公告)日:1984-08-03

    申请号:FR8400782

    申请日:1984-01-19

    Applicant: BASF AG

    Abstract: Aqueous solutions of glyoxal which contain acids are purified by treatment with a solution which contains from 20 to 60% by weight of a tertiary amine and from 80 to 40% by weight of an alcohol which is not infinitely miscible with water, the treatment being carried out by mixing the two solutions during a residence time of less than 5 minutes.

    Catalytic cracking of hydrocarbons containing two to thirty carbon atoms

    公开(公告)号:GB1132865A

    公开(公告)日:1968-11-06

    申请号:GB1050866

    申请日:1966-03-10

    Abstract: 1,132,865. Making combustible gas. BADISCHE ANILIN - & SODA - FABRIK A.G., and METALLGESELLSCHAFT A.G. 10 March, 1966 [11 March, 1965], No. 10508/66. Heading C5E. A cracked gas of high CH 4 content is made by cracking C 2 to C 30 hydrocarbons with steam at atmospheric or superatmospheric pressure at a temperature of from 350‹ to 550‹ C. The catalyst comprises 35 to 50% b.w. Ni, a carrier material, e.g. alumina, magnesia, zirconium dioxide or titanium dioxide, and an hydraulic binder, e.g. calcium aluminate, and the inner surface area of the catalyst must be at least 15 m 2 /gm. An alkali metal compound or a chromium compound may be added to the carrier. Pressures up to 100 atmos. are mentioned, but 20 to 60 atmos. are preferred, and catalyst surface areas up to 200 m 2 /gm are mentioned, with 15 to 40 preferred. The cracked gas may be further catalytically cracked at above 550‹ C. to increase the H 2 content, or at below 350‹ C. to increase the CH 4 content, and the initial cracked gas may be mixed with a cracked gas rich in H 2 and CO to provide town's gas. Three specific examples are described, in one of which, see Fig. (not shown), steam at 500‹ C. enters at (4) a reactor (1) to heat catalyst-filled tubes (2) externally, the steam leaving at (5) for delivery to a line (6) through which a mixture of desulphurized gasoline and hydrogen is delivered to the tubes (2). Examples of feedstocks are given.

    9.
    发明专利
    未知

    公开(公告)号:FI931487A

    公开(公告)日:1993-10-04

    申请号:FI931487

    申请日:1993-04-01

    Applicant: BASF AG

    Abstract: A process for preparing formic acid by thermal cleavage of quaternary ammonium formates of the general formula I (* CHEMICAL STRUCTURE *) (I) where R1, R2 and R3 are C1- to C14-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1-to C4-alkyl, with the proviso that the sum of the carbon atoms of R1, R2 and R3 in the quaternary ammonium formates I is 7 to 40, comprises carrying out the cleavage in the presence of secondary formamides of the general formula II (* CHEMICAL STRUCTURE *) (II) where R4 and R5 are C2- to C10-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1- to C4-alkyl, which formamides boil 30 degrees to 150 degrees C. lower than the tertiary amine of the general formula III (* CHEMICAL STRUCTURE *) (III) where R1, R2 and R3 have the abovementioned meanings, contained in the formate I.

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