21.
    发明专利
    未知

    公开(公告)号:DE3918015A1

    公开(公告)日:1990-12-06

    申请号:DE3918015

    申请日:1989-06-02

    Applicant: BASF AG

    Abstract: The muscone of the formula I is prepared by bringing open-chain 2,15-diketones of the general formula II CH3-CO-X-CO-CH3 (II> in which X represents one of the radicals -(-CH2-)@(a> -CH=CH-(-CH2-)@CH=CH- (b> -CH2-CH=CH-(-CH2-)@CH=CH-CH2- (c> -CH2-CH2-CH=CH-(-CH2-)@CH=CH-CH2-CH2- (d) or -CH2-CH2-CH2-CH=CH-(-CH2-)@CH=CH-CH2-CH2-CH2- (e), into contact at temperatures of 300 to 400 DEG C in the presence of 5 to 15 % by weight of water, relative to the amount of catalyst, in the gas phase over a fixed-bed catalyst which contains TiO2, CeO2 or ThO2 as the catalytically active compound and hydrogenating catalytically the unsaturated cyclic ketone formed in this reaction by intramolecular aldol condensation. Furthermore, the open-chain unsaturated ketones of the formulae IIb, IIc and IId and advantageous processes for their preparation and their use as intermediates for a simple industrial muscone synthesis are claimed.

    24.
    发明专利
    未知

    公开(公告)号:DE3837308A1

    公开(公告)日:1990-05-10

    申请号:DE3837308

    申请日:1988-11-03

    Applicant: BASF AG

    Abstract: Copper-containing catalysts for low-temperature conversion at temperatures of from 150 to 300 DEG C and at from 10 to 40 bar which additionally contain aluminium, and zinc, if desired in the form of the compounds or oxides, and are prepared by joint precipitation, the copper-containing catalysts containing potassium and having a BET surface area matched to the potassium content, the potassium content being set to from 0.1 to 3.0% by weight at a BET surface area of from 30 to 160 m /g, and their use for the production of hydrogen and carbon dioxide from carbon monoxide and water.

    Process for the preparation of ketones

    公开(公告)号:DE3825873A1

    公开(公告)日:1990-02-01

    申请号:DE3825873

    申请日:1988-07-29

    Applicant: BASF AG

    Abstract: Process for the preparation of ketones of the general formula I in which R and R independently of one another denote alkyl, cycloalkyl, arylalkyl, aryl or hetaryl, where at least one of the radicals R or R have attached to the alpha carbon atom at least one hydrogen atom, by reacting two carboxylic acids of the general formulae (IIa/IIb), R -COOH (IIa) and R -COOH (IIb) in the gas phase in the presence of a catalyst, the catalysts having an active component of titanium dioxide whose specific surface area is greater than 10 m /g.

    30.
    发明专利
    未知

    公开(公告)号:DE59402754D1

    公开(公告)日:1997-06-19

    申请号:DE59402754

    申请日:1994-03-15

    Applicant: BASF AG

    Abstract: Catalyst suitable for hydrogenation of organic cpds., comprises (all based on total wt. of catalyst); (a) 80 wt.% nickel (calculated as nickel oxide); (b) 10-25 wt.% of silicon (calculated as zirconium oxide; and (d) 0-10 wt.% of aluminium (calculated as aluminium oxide). The amt. of silicon dioxide and aluminium oxide is at least 15 wt.%. The catalyst is prepd. by; (2) adding an acidic aq. soln. of nickel-, zirconium- and opt. aluminium salts to a basic aq. soln. or suspension of silicon cpds. (and opt. aluminium cpds.), so that the pH of the resulting mixt. drops to at least 6.5; (2) adding a further basic soln. to bring the pH to 7-8; and (3) isolating the pptd. solid, which is then dried, formed and calcined.

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