Saudi Arabian Oil Company

King Abdullah University of Science and Technology

King Fahd University of Petroleum and Minerals

Sumitomo Chemical Company, Limited

Saudi Basic Industries Corporation

Saudi Aramco Technologies Company

Wei Xu

Motaz Khawaji

Sohel K Shaikh

Kareemuddin Mahaboob Shaik

Ola S Ali

Aadesh Harale

Hussain Al Yami

Ibrahim A Abba

Yu Han

Xinglong Dong

Isidoro Morales Osorio

Abdennour Bourane

Miao Sun

Thamer Mohammad

Youssef Saih

Kenji Sogo

Samir Barman

Stephan Ralf Vogel

Nestor Garcia Villalta

Mohammad S Alroaithi

Zhonglin Zhang

Musaed Salem Al-Ghrami

Jean-Marie Maurice Basset

Abdullah Raddad Al-Malki

Remi Mahfouz

Faisal M Melibari

Muhammad Atiqullah

Hussain M Yami

Anwar Hossaen

Fahad A Almalki

Zhaohui Liu

Qiwei Tian

Faisal Mohammed Al-Thenayan

Abdel Salam Al-Sarkhi

Thamer Mohammed

Jullian Vittenet

Aaron Chi Akah

Mark P Kaminsky

Jorge Gascon

Gautam Tavanappa Kalghatgi

Jorge Gascon Sabate

Hassan Babiker

Ea Jaseer

Mohammed Alabdullah

E A Jaseer

Abeer Arjah

Faisal Melebari

Sirajudeen Mohamed

Syriac J Palackal

Ayman Amer

Nicolaas Hendrika Friederichs

Vincent Cunningham

Mohammed Abdulmajeed Al-Daous

Atieh Abu-Raqabah

Vugar O Aliyev

Ali Shehri

Olanrewaju Malcolm Oshinowo

Farhan M Al-Shahrani

Khalid A Al-Majnouni

Hiren Shethna

Mohamed Elanany

Sibo Lin

Atieh Aburaqabah

Muhammad Imran Ul-haq

Yohei Kashiwame

Marcus J Killingworth

Yagnaseni Ghosh

Shatha Ali Alabbad

Abdelsalam Mohammad Al-Sarkhi

Ali Saad Headan

Khalid Ali Almajnouni

Pradeep Kumar Doggali

Tuiana Bairovna Shoinkhorova

Alberto Rodriguez Gomez

Alla Dikhtiarenko

Rodrigo Sandoval Rivera

Weili Yu

Kazuhiro Takanabe

Lieven Gevers

Bing Wang

Mohammed Alshammasi

Dana Amber Wong

Shaikh Sohel

Ali M Albarakati

Sohel K Saikh

Alberto Rodriguez-Gomez

Abdulelah Alghadeer

Kadhim Abbas Mohammed

Tayirjan Isimjan

Silvano Del Gobbo

Jean Marie Basset

Atieh Abu-Ruqabah

Maneet Muktibodh

Isidoro Morales

Ola Salah Ali

Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst including a chromium compound coordinated with a ligand and a co-catalyst including an organoaluminum compound. The ligand may have a chemical structure according to Formula (1), wherein Ris a (C-C) substituted or unsubstituted hydrocarbyl group; R, R, R, and Rare independently chosen from (C-C) hydrocarbyl groups; and Rand N are in a cis configuration.

Catalyst systems suitable for the tetramerization of ethylene and methods of using the same

According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure —O((CH)O)R4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.

Antifouling oligomerization catalyst systems

A process for selectively producing oligomers may comprise bringing at least one antifouling agent into contact with a first amount of at least one aluminum alkyl compound to form at least one antifouling compound comprising the structure or its dimeric form; and feeding the at least one antifouling compound, an additional amount of the at least one aluminum alkyl compound, at least one titanate compound, and ethylene into a jet loop reactor and oligomerizing ethylene to produce one or more of 1-butene, 1-hexene, or 1-octene. One or more of the chemical groups R1, R2, and R3 may be the antifouling agent comprising the structure —O((CH)O)R4. n may be an integer of from 1 to 20. m may be an integer of from 1 to 100. R4 may be a hydrocarbyl group. In embodiments, the chemical groups R1, R2, or R3 that do not comprise the antifouling agent, if any, may be hydrocarbyl groups. The at least one titanate compound may be fed as a stream separate from the streams of the at least one antifouling compound and the additional amount of the at least one aluminum alkyl compound. The of the sum of the first amount and the additional amount of the at least one aluminum alkyl compound to the at least one titanate compound may be equal to or higher than 1.5 and equal to or lower than 3.0.

Process for selective ethylene oligomerization with antifouling components

This application relates to methods and systems for drying polyol starters, as well as reaction mixtures including such polyol starters, and the preparation of polymers derived from such polyol starters. In some embodiments, the present invention encompasses methods of drying a polyol initiator compound, the method including the step of contacting a composition comprising a polyol initiator compound with one or more molecular sieves.

Systems and methods for drying compounds

A method of continuously producing a polyol includes: (i) feeding a solid catalyst into a continuous stirred tank reactor (CSTR); (ii) contacting a reaction mixture comprising one or more epoxides and carbon dioxide with the solid catalyst and a chain transfer agent comprising a plurality of sites capable of initiating copolymerization of epoxides and carbon dioxide in the CSTR; (iii) allowing polymerization reaction to proceed until a desired molecular weight polyol has formed; and (iv) terminating the polymerization reaction.

Continuous manufacturing of polyol

A method for making a metal carbide based catalyst for crude oil cracking includes mixing a clay with a phosphorous based stabilizer material to obtain a liquid slurry; adding an aluminosilicate zeolite and an ultrastable Y zeolite to the liquid slurry; adding AlCl(OH)to the liquid slurry; adding metal carbide particles, having a given diameter, to the liquid slurry to obtain a mixture; and spray drying the mixture to obtain the metal carbide based catalyst. The metal carbide particles are coated with the aluminosilicate zeolite and the ultrastable Y zeolite.

Metal carbide based catalyst and method of making

A catalyst system is disclosed. The catalyst system may include a pre-catalyst and a co-catalyst. The pre-catalyst includes one or more chromium compounds coordinated with a ligand. The co-catalyst includes one or more organoaluminum compounds, wherein: the ligand has a structure according to formula (I): In formula (I), R, R, R, and Rare independently chosen from (C-C) aryl, optionally substituted with one or more R, wherein Ris a (C-C) hydrocarbyl or a (C-C) heterohydrocarbyl. In formula (I), Ris a (C-C) aryl or a (C-C) heteroaryl, optionally substituted with one or more R, wherein Ris a (C-C) hydrocarbyl or a (C-C) heterohydrocarbyl, provided that Ris not naphthyl or triptycenyl.

Chromium-catalyzed ethylene oligomerization with bulky functionalized N-aryl bisphosphineamine ligands

Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C-C) carboxylate, acetylacetonate, or a (C-C) hydrocarbyl; Lis a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C-C)fluorine-substituted aryl, a (C-C)fluorine-substituted aryloxy, or a (C-C)fluorine-substituted alkoxy; and L∩L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts.

Catalyst systems

A hydrocarbon feed stream may be processed by a method that may include catalytically cracking a hydrocarbon feed stream in a counter-current reactor to produce a first effluent stream, and processing a portion or all of the first effluent stream by at least one or more separations. The at least one or more separations may form at least a second effluent stream including at least 95 wt. % C-Chydrocarbons, and a third effluent stream including at least 95 wt. % of ethane, propane, or a combination thereof. In some embodiments, the method may further include catalytically cracking a portion or all of the second effluent stream in a second reactor to form a second reactor effluent stream, combining a portion of all of the second reactor effluent stream with the first effluent stream, steam cracking a portion or all of the third effluent stream to form a steam cracked effluent stream, and combining a portion or all of the steam cracked effluent stream with the first effluent. In other embodiments, the method may further include passing a portion or all of the second effluent stream to the counter-current reactor, steam cracking a portion or all of the third effluent stream to form a steam cracked effluent stream, and combining a portion or all of the steam cracked effluent stream with the first effluent stream.

Methods for processing hydrocarbon feed streams

In one aspect, the present disclosure encompasses a nanocomposite composition comprising a polycarbonate polyol and a nanofiller, wherein the polycarbonate polyol comprises: (a) a polycarbonate polyol derived from copolymerization of COand one or more epoxides; and/or (b) an aliphatic polycarbonate polyol. In a second aspect, the present disclosure encompasses a method for preparing the nanocomposite composition. In a third aspect, the present disclosure encompasses a method of improving a performance property of a polycarbonate polyol, the method comprising the step of forming the nanocomposite composition.

Polycarbonate polyol nanocomposites

Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C-C) carboxylate, acetylacetonate, or a (C-C) hydrocarbyl; Lis a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C-C)fluorine-substituted aryl, a (C-C)fluorine-substituted aryloxy, or a (C-C)fluorine-substituted alkoxy; and L∩L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more organic acids, organic acid salts, esters, anhydrides, or combinations of these.

According to one embodiment, a catalyst system that reduces polymeric fouling may comprise at least one titanate compound, at least one aluminum compound, and at least one antifouling agent or a derivative thereof. The antifouling agent may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. One or more of the chemical groups R1, R2, and R3 may be antifouling groups comprising the structure &#x2014;O((CH)O)R4, where n is an integer from 1 to 20, m is an integer from 1 to 100, and R4 is a hydrocarbyl group. The chemical groups R1, R2, or R3 that do not comprise the antifouling group, if any, may be hydrocarbyl groups.

A catalyst system that may reduce polymeric fouling may include at least one titanate compound, at least one aluminum compound, and an antifouling agent. The antifouling agent may be chosen from one or more of a phosphonium or phosphonium salt; a sulfonate or a sulfonate salt; a sulfonium or sulfonium salt; an ester including a cyclic moiety; an anhydride; a polyether; and a long-chained amine-capped compound. The catalyst system may further include a non-polymeric ether compound.

A multi-zoned fluidized bed reactor system may include a multi-zoned fluidized bed reactor and at least one catalyst regeneration loop. The multi-zoned fluidized bed reactor comprising a housing, a fluid bed distributor plate positioned at the bottom of the housing, a fluidized catalyst bed disposed vertically above the fluid bed distributor plate and a condensation zone disposed vertically above the fluidized catalyst bed. The at least one catalyst regeneration loop may be fluidly coupled to the stripping zone and a reaction zone. The at least one catalyst regeneration loop may be operable to withdraw a portion of spent catalyst from the stripping zone, regenerate the portion of spent catalyst to produce regenerated catalyst, and return the regenerated catalyst to the reaction zone. A method of regenerating catalyst in a multi-zoned fluidized bed reactor may include passing a portion of spent catalyst from a stripping zone to a catalyst regeneration loop.

Integrated loop systems for catalyst regeneration in multi-zone fluidized bed reactors and methods of using the same

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Dhahran, Saudi Arabia

Wei Xu