Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Reexamination Certificate
2006-04-04
2006-04-04
Johnson, Jonathan (Department: 1725)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
C502S066000
Reexamination Certificate
active
07022637
ABSTRACT:
Novel catalysts and processes in accordance with the invention can accomplish high selectivity and conversion of naphthalenic compounds such as the conversion of methylnaphthalene (2-MN) or naphthalene to 2,6-dimethylnaphthalene (2,6-DMN). The catalysts are prepared by treating, for example, a ZSM-5-type material with iron in the presence of a halogen such as a fluoride. The resulting catalyst includes iron, as well as a significant portion of aluminum present in the ZSM-5-type starting material. Processes for using the catalysts also are disclosed.
REFERENCES:
patent: 4443552 (1984-04-01), Iida et al.
patent: 4446008 (1984-05-01), Shimakawa et al.
patent: 4638105 (1987-01-01), Chang et al.
patent: 4837397 (1989-06-01), Absil et al.
patent: 4957891 (1990-09-01), Sachtler et al.
patent: 4994254 (1991-02-01), Suzuki et al.
patent: 5098687 (1992-03-01), Skeels et al.
patent: 5207893 (1993-05-01), Iwamoto et al.
patent: 5411724 (1995-05-01), Beyer et al.
patent: 5518708 (1996-05-01), Skeels et al.
patent: 5614079 (1997-03-01), Farnos et al.
patent: 5648585 (1997-07-01), Murray et al.
patent: 5925329 (1999-07-01), Williams et al.
patent: 5993764 (1999-11-01), Tabata et al.
patent: 4-360842 (1992-12-01), None
patent: AA 6329564 (1994-11-01), None
Michael Sigl; Ernst Stefan; Jens Weitkamp; Helmut Knozinger. Characterization of the acid properties of [Al]-,[Ga ]—and [Fe]—HZSM—5 by low-temperture FTIR spectroscopy of adsorbed dihydrogen and ethylbenzene disproportionation. Copyright 1998. (Abstract only.).
A. Chatterjee; A. K. Chandra. Fe and B substitution in ZSM-5 zeolites: A quantum-mechanical study. Copyright 1998. (Abstract only.).
Juergen, Mueller. Investigations of the thermal decomposition of PVC in the presence of metal chlorides. Copyright 1998. (Abstract only.).
S. J. Kulkarni; K. V. V. S. B. S. R. Murthy; K. Nagaiah; V. Sylesh Kumar; Y. V. Subba Rao; M. Subrahmanyam; A. V. Rama Rao. Alkylation of naphthalene with methanol over modified zeolites. Copyright 1998. (Abstact only.).
Derwent Information Ltd. 2,6- or 2,7-Di alkyl naphthalene highly selective and efficient prodn.—by reacting naphthalene cpd. and alkylating agent in presence of specific zeolite treated in soln. of organic silane, for high mol. material. Copyright 1998. (Abstract only.).
Shu-Bin Pu: Tomoyuki Inui. Synthesis of 2,6-dimethylnaphthalene by methylation of methylnaphthalene on various medium and large-pore zeolite catalysts. pp. 305-316. Mar. 12, 1996.
T. Komatsu; Y. Araki; S. Namba; T. Yashima. Selective formation of 2,6-dimethylnaphthalene from 2-methylnaphthalene on ZSM-5 and metallosilicates with MFI structure. pp. 1821-1828. 1994.
Lillwitz Lawrence D.
Shen Jian-Ping
Song Chunshan
BP Corporation North America Inc.
Johnson Jonathan
McDonald Scott P.
Patel Nirav
The Pennsylvania State University
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