13.
    发明专利
    未知

    公开(公告)号:DK0901982T3

    公开(公告)日:2002-03-04

    申请号:DK98117210

    申请日:1998-09-09

    Applicant: BASF AG

    Abstract: The catalyst is in tablet form having a diameter of 0.8-5 mm and a height of 0.8-5 mm. The catalyst is prepared by: (a) precipitating a solution of zinc and aluminium salts (Zn:Al ratio is 3-1:1-3) with and alkali carbonate or hydroxide solution at a pH of 5-12 and a temperature of 20-100 degrees C; (b) removing and washing the precipitate to remove alkali ions; (c) drying the precipitate; (d) calcining the precipitate at 250-800 degrees C to a mixed oxide; (e) dispersing the mixed oxide in an acid solution of copper and zinc salts (Cu:Zn ratio is 1-20:5-1); (f) precipitating the dispersion with an alkali carbonate or hydroxide solution at a pH of 6-9 and a temperature of 20-100 degrees C; and (g) repeating steps (b) to (d). The solutions in steps (a) and/or (e) additionally contain oxides of platinum group metals, groups 5, 11 and the lanthanides.

    14.
    发明专利
    未知

    公开(公告)号:DE19739773A1

    公开(公告)日:1999-03-11

    申请号:DE19739773

    申请日:1997-09-10

    Applicant: BASF AG

    Abstract: The catalyst is in tablet form having a diameter of 0.8-5 mm and a height of 0.8-5 mm. The catalyst is prepared by: (a) precipitating a solution of zinc and aluminium salts (Zn:Al ratio is 3-1:1-3) with and alkali carbonate or hydroxide solution at a pH of 5-12 and a temperature of 20-100 degrees C; (b) removing and washing the precipitate to remove alkali ions; (c) drying the precipitate; (d) calcining the precipitate at 250-800 degrees C to a mixed oxide; (e) dispersing the mixed oxide in an acid solution of copper and zinc salts (Cu:Zn ratio is 1-20:5-1); (f) precipitating the dispersion with an alkali carbonate or hydroxide solution at a pH of 6-9 and a temperature of 20-100 degrees C; and (g) repeating steps (b) to (d). The solutions in steps (a) and/or (e) additionally contain oxides of platinum group metals, groups 5, 11 and the lanthanides.

    19.
    发明专利
    未知

    公开(公告)号:DE3869033D1

    公开(公告)日:1992-04-16

    申请号:DE3869033

    申请日:1988-09-22

    Applicant: BASF AG

    Abstract: A zine oxide contg desulphurisation material is claimed, contg 20-80 wt% high surface-area Zn0 and 20-80 wt% basic zinc carbonate, mixed with water to form, dried and calcined. The surface area of the zinc oxide is min 10 m2/g, pref over 30 m2/g; technical grade zinc carbonate is used, of formula 5Zno.2C02.3H20 The oxide and carbonate are blended with water (10-60 wt%, pref 20-50%, taken as proportion of total content), blending time 1-10h, usually 1-5h. The mixt is formed, and dried, and calcined.

    20.
    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.

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