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Granulated active alumina Патенты

Язык: Немецкий
Тип: Заявка на патент
Номер (11) DE 2826095 A1
Номер заявки (21): 2826095.9-41
Дата подачи заявки (22): 14 июн. 1978 г.
Дата начала отсчета срока действия патента (24):
Дата публикации патента (44,45,46):
Дата публикации заявки (43): 20 дек. 1979 г.
Авторы Vorobiev J.K. , Badaev B.N. , Ljubuško G.I. , Levickij E.A. , Boreskov G.K. , Andruškevič M.M. , Baum B.A. , Pachomov N.A. , Chomjakova L.G. , Chramov A.E. , Rodionova N.A. , Isaev B.N. , Knjazev V.M. , Moroz E.M. , Erofeev V.N. , Drušinin I.P. , Škrabina R.A.
Организации
1 Институт катализа им. Г.К. Борескова СО РАН
Реферат на английском: A method is proposed for the manuf. of granulated Al2O3 as adsorbents, catalysts, or catalyst carriers in the chem. and petroleum-​refining industries. The method involves: (1) thermal decompn. of Al(OH)​3 in a fluidized bed of a solid heat carrier at 350-​600° for 0.05-​0.5 s; (2) treating with H2O at 20-​80° and pH 5-​10 for 0.5-​8 h to a hydrated decompn. product with a ≥50​% pseudoboehmite content; (3) treating the hydrated product with HNO3 or HCl at <150°; (4) granulation; (5) drying the granules at 20-​150°; and (6) roasting at 400-​600°. Thus, a mixt. of air and Al(OH)​3 with ≤200 μ particles was passed through a fluidized bed of a solid heat carrier at 500° providing a 0.1 s contact time of the Al(OH)​3 particles with the heat carrier. Amorphous Al(OH)​3 with a surface area of 250 m2/g was formed in the bed at a 14​% wt. loss. The amorphous Al(OH)​3 was suspended in H2O to a concn. of 215 g Al(OH)​3/L, the pH was adjusted to 8 with HNO3, and the suspension was stirred at 70° for 6 h and dried at 110° to a hydrated product contg. 75​% pseudoboehmite and 25​% bayerite. The hydrated product was suspended in H2O to a concn. of 250 g Al2O3/L and treated with HNO3 in an amt. of 0.15 mol HNO3/mol Al2O3 at 130° for 4 h to a viscous homogeneous paste. The latter was shaped into spherical granules, dried at 105°, and calcined at 550° to obtain active Al2O3 granules with a sp. surface area 350 m2/g, total pore vol. 0.71 cm3/g, predominant pore radius 60 Å, and compressive strength 95 kg​/cm2.
Библиографическая ссылка: Vorobiev J.K. , Badaev B.N. , Ljubuško G.I. , Levickij E.A. , Boreskov G.K. , Andruškevič M.M. , Baum B.A. , Pachomov N.A. , Chomjakova L.G. , Chramov A.E. , Rodionova N.A. , Isaev B.N. , Knjazev V.M. , Moroz E.M. , Erofeev V.N. , Drušinin I.P. , Škrabina R.A.
Granulated active alumina
Номер: DE2826095A1, , Заявка 2826095.9-41 с 14 июн. 1978 г.
Идентификаторы:
Chemical Abstracts 1980:165848
Chemical Abstracts (print) 92:165848
Название: Verfahren zur herstellung von granulierter aktiver tonerde
Название на английском: Granulated active alumina