Production of tertiary alkyl ether using improved zeolite cataly

Details Production of tertiary alkyl ether using improved zeolite cataly Production of tertiary alkyl ether using improved zeolite cataly

1991-12-17

1993-07-06

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4105

Patent

active

052256090

ABSTRACT:
A process is disclosed for the production of alkyl tertiary alkyl ether from alkanol and iso-olefin employing zeolite catalyst, particularly zeolite Beta, that results is a high ether selectivity and a significant reduction in the formation of olefin oligomer by-product. The improvement is realized by incorporating a catalyst pretreatment step in the overall etherification process. The zeolite catalyst pretreatment comprises either steaming or a hydrothermal treatment using liquid water at elevated temperature. The process is particularly effective in reducing the formation of dimer by-product in the zeolite Beta catalyzed process for the formation of MTBE with high selectivity.

REFERENCES:
patent: 4605787 (1986-08-01), Chu
patent: 4714787 (1987-12-01), Bell
patent: 4886918 (1989-12-01), Sorensen et al.
patent: 4962239 (1990-10-01), Bell et al.

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