Saudi Arabian Oil Company

King Fahd University of Petroleum and Minerals

Fahad A Almalki

Wei Xu

Motaz Khawaji

Samir Barman

Nestor Garcia Villalta

Ea Jaseer

Sohel K Shaikh

Zhonglin Zhang

Miao Sun

Noor Al-Mana

E A Jaseer

Catalyst systems for tetramerizing ethylene to form 1-octene may include a catalyst which may include a chromium compound coordinated with a ligand and a co-catalyst which may include an organoaluminum compound. The ligand may have a chemical structure according to Chemical Structure (I), wherein Ris a (C-C) alkyl group, a (C-C) cyclohydrocarbyl group, a (C-C) cycloheterohydrocarbyl group, or a (C-C) aryl group, and R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, and Rare independently chosen from a hydrogen atom, a (C-C) hydrocarbyl group, or a (C-C) heterohydrocarbyl group.

Catalyst systems that include meta-alkoxy substituted n-aryl bis-diphosphinoamine ligands

Catalyst systems for tetramerizing ethylene to form 1-octene may include a catalyst which may include a chromium compound coordinated with a ligand and a co-catalyst which may include an organoaluminum compound. The ligand may have a chemical structure according to Chemical Structure (I), wherein R, R, and Rare each independently chosen from a (C-C) hydrocarbyl group or a (C-C) heterohydrocarbyl group, and wherein the (C-C) hydrocarbyl or (C-C) heterohydrocarbyl groups of R, R, and Rhave greater than 10 carbon atoms combined and R, R, R, and Rand R, R, R, and R, are independently chosen from a hydrogen atom or a (C-C) hydrocarbyl group.

Catalyst systems that include silyl ether moieties

Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst comprising a chromium compound coordinated with a ligand and a co-catalyst comprising an organoaluminum compound. The ligand may include have a chemical structure according to formula (I), wherein at least one of R, R, R, R, R, R, R, R, R, R, R, and Rhave the structure according to formula (II) wherein R, R, R, and Rand the remainder of R, R, R, R, R, R, R, R, R, R, R, and Rare independently chosen from a hydrogen or a (C-C) hydrocarbyl group.

Catalyst systems

A system for upgrading pyrolysis oil may include a pyrolysis upgrading unit having a mixed metal oxide catalyst and a separation unit operable to separate used mixed metal oxide catalyst from a reaction effluent. A method for upgrading pyrolysis oil may include contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at reaction conditions to produce a reaction effluent. The pyrolysis oil may include multi-ring aromatic compounds. The mixed metal oxide catalyst may include a plurality of catalyst particles and each of the plurality of catalyst particles having a plurality of metal oxides. Contacting the pyrolysis oil with hydrogen in the presence of the mixed metal oxide catalyst at the reaction conditions may convert at least a portion of the multi-ring aromatic compounds in the pyrolysis oil to the light aromatic compounds.

Systems and methods for upgrading pyrolysis oil to light aromatics over mixed metal oxide catalysts

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Dhahran, Saudi Arabia

Fahad A Almalki