B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 21/04 (2006.01) B01J 21/12 (2006.01) B01J 35/10 (2006.01) B01J 37/00 (2006.01)
Patent
CA 2609199
A carrier, which comprises non-platelet alumina and/or a bond material, has a surface area of at least 1 m2/g, a total pore volume and a pore size distribution such that at least 80 % of the total pore volume is contained in pores with diameters in the range of from 0.1 to 10 µm, and at least 80 % of the pore volume contained in the pores with diameters in the range of from 0.1 to 10 µm is contained in pores with diameters in the range of from 0.3 to 10 µm, and a process for the preparation of a carrier which comprises forming a mixture comprising: a) from 50 to 95 weight percent of a first particulate .alpha.- alumina having a median particle size (d50) of from 5 to 100 µm; b) from 5 to 50 weight percent of a second particulate .alpha.- alumina having a d50 which is less than the dso of the first particulate .alpha.-alumina and which is in the range of from 1 to 10 µm; and c) an alkaline earth metal silicate bond material; weight percent being based on the total weight of .alpha.-alumina in the mixture; and firing the mixture to form the carrier.
Support, qui comprend de l'alumine autre qu'en plaquettes et/ou un matériau de liaison, à surface d'au moins 1 m2/g, volume de pore total et distribution de taille de pore faisant qu'au moins 80 % du volume de pore total correspond à des pores de diamètre compris entre 0,1 et 10 ?m, et qu'au moins 80 % du volume de pore correspondant aux pores en question correspond à des pores de diamètre compris entre 0,3 et 10 ?m, et procédé d'élaboration de support qui consiste à former le mélange suivant: a) entre 50 et 95 % en poids d'une première a- alumine particulaire à taille de particule moyenne (d50) comprise entre 5 et 100 ?m; b) entre 5 et 50 % en poids d'une seconde a- alumine particulaire à d50 inférieure à la d50 de la première et comprise entre 1 to 10 ?m; et c) matériau de liaison en métal alcalino-terreux, le pourcentage en poids étant fonction du poids total d' a-alumine dans le mélange ; et à enflammer le mélange pour constituer le support.
Gerdes William H.
Lockemeyer John R.
Remus Donald J.
Szymanski Thomas
Yeates Randall Clayton
Gowling Lafleur Henderson Llp
Saint-Gobain Ceramics & Plastics Inc.
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