C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 43/04 (2006.01) C07C 41/06 (2006.01)
Patent
CA 2097090
F-6592 -16- Abstract of the Disclosure A process is disclosed for the production of alkyl tertiary alkyl ethers in C4+ hydrocarbon streams rich in isoolefins, typically containing catalyst deactivating amounts of dienes and/or compounds containing heteroatoms. The process is especially advantageous in extending the cycle length for the zeolite catalyzed etherification of isoolefins in C4+ FCC gasoline by reducing catalyst aging. It has been discovered that if hydrogen is co-fed with the alkanol and C4+ isoolefin rich feedstreams to an etherification reaction catalyzed by acidic zeolite wherein the zeolite has been impregnated with a noble metal the rate of catalyst aging or deactivation is stantially lowered. The process is especially effective, i.e., catalyst aging is particularly reduced, when hydrogen is co-fed to an etherification reaction using acidic zeolite Beta catalyst containing palladium.
Le Quang N.
Thomson Robert T.
Kirby Eades Gale Baker
Mobil Oil Corporation
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