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Hirschler-Plank mechanism

Another method to produce more stable cracking catalysts is the introduction of polyvalent cations into, e.g., Na-Y, in particular La or rare earth (RE) cations [435,436]. Hirschler [437] andPlank [438] independently suggested that formation of OH groups via introduction of polyvalent cations is due to the following chemistry (which is nowadays generally referred to as the Hirschler-Plank mechanism), illustrated here with two selected examples using chlorides of two- or three-valent cations, M" and M ", respectively ... [Pg.82]

Another peculiarity of exchanged divalent cations is their possibhity to hydrolyze according to the Hirschler—Plank mechanism ( 159) ... [Pg.231]

See other pages where Hirschler-Plank mechanism is mentioned: [Pg.53]    [Pg.84]    [Pg.87]    [Pg.88]    [Pg.287]    [Pg.23]    [Pg.37]    [Pg.92]    [Pg.53]    [Pg.84]    [Pg.87]    [Pg.88]    [Pg.287]    [Pg.23]    [Pg.37]    [Pg.92]    [Pg.92]    [Pg.394]    [Pg.259]   
See also in sourсe #XX -- [ Pg.82 , Pg.84 ]



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