Chemistry of inorganic compounds – Zeolite – With change of synthesized zeolite morphology
Patent
1998-12-29
1999-11-23
Bell, Mark L.
Chemistry of inorganic compounds
Zeolite
With change of synthesized zeolite morphology
423709, 423716, 423305, 423306, 4233282, 423335, 423DIG21, 423DIG24, 423DIG30, C01B 3922, C01B 3924, C01B 3914, C01B 3704
Patent
active
059895187
ABSTRACT:
Applicants have developed a continuous process for synthesizing various molecular sieves. The process enables one to control both the particle size and particle size distribution. Any of the molecular sieves represented by the empirical formula on an anhydrous basis: rR.sub.2 O:(Si.sub.x Al.sub.y P.sub.z)O.sub.2, where R is at least one templating agent, "r" "x" "y" and "z" are the mole fractions of R, Si, Al and P respectively, can be prepared using this process. The process involves continuously adding reactive sources of the desired components along with a structure directing agent into a continuous crystallization reactor. Either interstage backmixing is introduced or the number of stages is adjusted in order to control particle size. Finally, one way to control particle size distribution is to split the product stream into at least two streams and flowing each stream to a wet miller operated at different severity and then reblending to obtain at least a bimodal distribution.
REFERENCES:
patent: 3310373 (1967-03-01), Johnson
patent: 3425800 (1969-02-01), Hirsh
patent: 3886094 (1975-05-01), Pilato et al.
patent: 4310440 (1982-01-01), Wilson et al.
patent: 4336234 (1982-06-01), Leutner et al.
patent: 4368174 (1983-01-01), Valyocsik
patent: 4371510 (1983-02-01), Christophliemk et al.
patent: 4374093 (1983-02-01), Rollmann et al.
patent: 4385042 (1983-05-01), Whitehurst et al.
patent: 4440871 (1984-04-01), Lok et al.
patent: 4591491 (1986-05-01), Christophliemk et al.
patent: 4818509 (1989-04-01), Dwyer et al.
patent: 4853197 (1989-08-01), Wilson et al.
patent: 4880761 (1989-11-01), Bedard et al.
patent: 5089243 (1992-02-01), Thome et al.
patent: 5100636 (1992-03-01), Thome et al.
patent: 5302362 (1994-04-01), Bedard
patent: 5427765 (1995-06-01), Inoue et al.
Marchioretto Sonu
Monson Lyle Edward
Tannous Medhat Khalil
Bell Mark L.
McBride Thomas K.
Molinaro Frank S.
Sample David
UOP LLC
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