Saudi Arabian Oil Company

Sohel K Saikh

Wei Xu

Zhonglin Zhang

Faisal M Melibari

Hussain M Yami

A process for selectively producing 1-butene comprises combining at least one antifouling agent and at least one aluminum alkyl compound to form an antifouling feed stream, wherein bringing the antifouling agent into contact with the aluminum alkyl compound forms at least one antifouling agent co-catalyst in a first step. The antifouling agent co-catalyst may comprise a structure comprising a central aluminum molecule bound to an R1 group, an R2 group, and an R3 group. The process further comprises feeding the antifouling feed stream, a catalyst comprising at least one titanate compound, and ethylene into a reactor dimerize ethylene in a second step. The catalyst is fed as a stream separated from the antifouling feed stream. The feeds may be varied in real-time to adjust a ratio of the formed antifouling agent co-catalyst and residual aluminum alkyl compound or antifouling agent in the antifouling feed stream.

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Dhahran, Saudi Arabia

Sohel K Saikh