Monitoring of ionic liquid catalyst deactivation

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United States of America Patent

PATENT NO 8658426
APP PUB NO 20100129921A1
SERIAL NO

12437515

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Abstract

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A process for determining ionic liquid catalyst deactivation including (a) collecting at least one sample of an ionic liquid catalyst; (b) hydrolyzing the at least one sample to provide at least one hydrolyzed sample; (c) titrating the at least one hydrolyzed sample with a basic reagent to determine a volume of the basic reagent necessary to neutralize a Lewis acid species of the ionic liquid catalyst; and (d) calculating the acid content of the at least one sample from the volume of basic reagent determined in step (c) is described. Processes incorporating such a process for determining ionic liquid catalyst deactivation are also described. These processes are an alkylation process, a process for controlling ionic liquid catalyst activity in a reaction producing by-product conjunct polymers, and a continuous process for maintaining the acid content of an ionic liquid catalyst at a target acid content in a reaction producing by-product conjunct polymers.

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Patent Owner(s)

Patent OwnerAddress
CHEVRON CORPORATION6001 BOLLINGER CANYON ROAD SAN RAMON CA 94583

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pathiparampil, Annie T Orinda, US 4 35
Timken, Hye-Kyung Albany, US 44 536

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