Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Reexamination Certificate
2007-01-02
2007-01-02
Johnson, Edward M. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
C585S481000
Reexamination Certificate
active
10786553
ABSTRACT:
A process is described for the synthesis of mesitylene, characterized in that mesitylene is obtained starting exclusively from pseudocumene, without the use of any other chemical compound, operating in continuous, at a temperature ranging from 225 to 400° C., at a pressure ranging from 1 to 50 bar, at a weight space velocity ranging from 0.1 to 10 hours−1, and in the presence of a catalyst containing a zeolite selected from ZSM-5 zeolite having a crystal lattice based on silicon oxide and aluminum oxide, and ZSM-5 zeolite modified by the partial or total substitution of Si with a tetravalent element such as Ti or Ge and/or the partial or total substitution of Al with other trivalent elements, such as Fe, Ga or B.
REFERENCES:
patent: 4152363 (1979-05-01), Tabak et al.
patent: 5004854 (1991-04-01), Yan
patent: 5206194 (1993-04-01), Clark
patent: 5258566 (1993-11-01), Kresge et al.
Arrigoni Virginio
Buzzoni Robert{dot over (o)}
Cesana Alberto
Dalloro Leonardo
Fois Giovanni Antonio
Enitecnologie S.p.A.
Johnson Edward M.
Polimeri Europa S.p.A.
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