King Fahd University of Petroleum and Minerals

Saudi Arabian Oil Company

Sabic Global Technologies B.v.

Saudi Basic Industries Corporation

Other

King Abdulaziz City for Science and Technology

Abdullah Mohammed Aitani

Sulaiman Saleh Al-Khattaf

Syed Ahmed Ali

Arudra Palani

Mohammad Naseem Akhtar

Ziyauddin S Qureshi

Omer Refa Koseoglu

Yaming Jin

Mohammed Abdul Bari Siddiqui

Mohammed A Al-Yami

Tazul Islam Bhuiyan

Sohel K Shaikh

Musaed Salem Al-Ghrami

Nabil Al-Yassir

Raed H Abudawoud

Aaron Chi Akah

Cemal Ercan

Hassan Saeed Al-Awad Alasiri

Mohammed Hassan Al-Hazmi

Ahmed Alzenaidi

Mian Rahat Saeed

Vidya Sagar Guggilla

Mohammed A Siddiqui

Balasamy Rabindran Jermy

Yuguo Wang

Palani Arudra

Ahmed Al-Zenaidi

Akram Abdulhakeem Al-Absi

Takashi Ino

Muhammad Naseem Akhtar

Sulaiman S Al-khattaf

Gazali Tanimu

Sachio Asaoka

Taiwo A Odedairo

Hideshi Hattori

Abdulgader Maghrabi

Mohammad Abul-Hamayel

Toshiaki Okuhara

Mohammed Ashraf Ali

M Abdullbari Siddiqui

Siddiqui M Abdulbari

Ziyauddin R Qureshi

M Abdulbari Siddiqui

Balkrishna B Tope

The presently disclosed subject matter relates to methods of producing ethylene and propylene by the catalytic steam cracking of naphtha using an HZSM-5 catalyst. An example method can include providing a naphtha feedstock, providing steam, and providing an HZSM-5 catalyst. The method can further include preparing the HZSM-5 catalyst by titanium modification or alkaline treatment, followed by phosphorus modification. The method can further include feeding the naphtha feedstock and steam to a reactor containing the catalyst and removing an effluent from the reactor having a combined yield of ethylene and propylene of greater than about 45 wt-%.

Methods for producing ethylene and propylene from naphtha

A process for upgrading a hydrocarbon feed comprises contacting the hydrocarbon feed with steam in the presence of a cracking catalyst composition at reaction conditions sufficient to cause at least a portion of hydrocarbons in the hydrocarbon feed to undergo one or more cracking reactions to produce a steam catalytic cracking effluent comprising light olefins, light aromatic compounds, or both, where the cracking catalyst composition comprises a cracking additive comprising metal species impregnated on a ZSM-5 zeolite, where the metal species comprises a metal selected from the group consisting of chromium, vanadium, iron, platinum, molybdenum, cerium, and nickel.

Modified ZSM-5 for steam enhanced catalytic cracking of crude oil to light olefins and aromatics

A process for converting a hydrocarbon feed may comprise contacting a hydrocarbon feed with steam in the presence of a cracking catalyst under steam enhanced catalytic cracking conditions. The contacting the hydrocarbon feed with the steam in the presence of the cracking catalyst may cause at least a portion of the hydrocarbon feed to undergo steam catalytic cracking reactions to produce a cracked effluent comprising Cto Colefins, Cto Caromatic compounds, or both. The cracking catalyst may be a nanoparticle comprising: a core and a shell. The core may comprise one or more ZSM-5 zeolite particles and have an outer surface. The shell may comprise a plurality of fibers extending radially outward from the outer surface of the core. The plurality of fibers may comprise silica.

Processes for direct conversion of crude oil to light olefins and light aromatics through steam enhanced catalytic cracking over a core shell cracking catalyst

According to embodiments, a process of forming a catalyst for aromatizing hydrocarbons may include enhancing a mesoporosity of a zeolite support by a base-leaching treatment, an acid-leaching treatment, or both to form a zeolite support having enhanced mesoporosity, mixing the zeolite support having enhanced mesoporosity with a solution containing zinc or gallium to disperse the zinc or gallium on the zeolite support having enhanced mesoporosity, and calcining the zeolite support having enhanced mesoporosity with zinc or gallium dispersed thereon to form a zinc- or gallium-doped zeolite catalyst having a mesopore volume of greater than 0.09 cm/g and less than 0.20 cm/g.

Processes of forming metal-doped zeolite catalysts with enhanced mesoporosity

A process for upgrading a hydrocarbon feed includes contacting the hydrocarbon feed with steam in the presence of a cracking catalyst in a steam catalytic cracking reactor at reaction conditions sufficient to cause at least a portion of hydrocarbons in the hydrocarbon feed to undergo one or more cracking reactions to produce a steam catalytic cracking effluent comprising light olefins, light aromatic compounds, or both, where the cracking catalyst comprises a ZSM-11 zeolite.

Nano-ZSM-11 for direct conversion of crude oil to light olefins and aromatics

A fluid catalytic cracking catalyst composition (FCC catalyst composition) includes an FCC catalyst and from 1 wt.% to 30 wt.% aromatization-promoting FCC additive. The FCC catalyst includes a USY zeolite, and the aromatization-promoting FCC additive is an MFI zeolite modified with an aromatization compound. The aromatization compound is a metal or metal oxide that includes a metal element from periods 4-6 of the IUPAC periodic table. A method for upgrading a hydrocarbon feed includes contacting the hydrocarbon feed with the FCC catalyst composition at reaction conditions sufficient to upgrade at least a portion of the hydrocarbon feed.

Fluidized catalytic cracking processes and additives for improving gasoline yield and quality

Embodiments of the present disclosure are directed to processes for aromatizing hydrocarbons includes contacting the hydrocarbons with a catalyst including at least two different metal modifiers dispersed on surfaces of a hydrogen-form medium-pore zeolite support. Each of the at least two different metal modifiers comprises a metal selected from the group consisting of IUPAC Groups 3-12, and lanthanide metals, and the catalyst is substantially free of gallium. Contacting the hydrocarbons with the catalyst causes a least a portion of the hydrocarbons to undergo a chemical reaction to form aromatic hydrocarbons.

Aromatization of light hydrocarbons using metal-modified zeolite catalysts

According to embodiments, a process for aromatizing hydrocarbons may include contacting the hydrocarbons with a zinc- or gallium-doped ZSM-5 catalyst having a mesopore volume of greater than 0.09 cm/g. Contacting the hydrocarbons with the catalyst causes a least a portion of the hydrocarbons to undergo chemical reactions to form aromatic hydrocarbons.

Aromatization of light hydrocarbons using metal-doped zeolite catalysts with enhanced mesoporosity

Processes for aromatizing hydrocarbons include contacting the hydrocarbons with a catalyst composition comprising a metal oxide dispersed on a surface of a zeolite support, where contacting the hydrocarbons with the catalyst composition causes at least a portion of the hydrocarbons to undergo a chemical reaction to form aromatic hydrocarbons. The catalyst composition is prepared by a synthesis process that includes combining the zeolite support with a hydrocarbon solvent to form a zeolite mixture, where the hydrocarbon solvent pre-wets the pores of the zeolite support. The synthesis process further includes combining a polar solvent comprising a metal salt with the zeolite mixture to form an impregnated zeolite support. The synthesis process also includes drying the impregnated zeolite support and calcining the impregnated zeolite support to convert the metal salt to the metal oxide, thereby forming the catalyst composition.

Catalyst compositions for aromatizing hydrocarbons and processes for producing aromatic compounds using the catalyst compositions

Embodiments of zeolite composite catalysts and methods of producing the zeolite composite catalysts are provided, where the methods comprise dissolving in an alkaline solution a catalyst precursor comprising at least one mesoporous zeolite while heating, stirring, or both to yield a dissolved zeolite solution, where the mesoporous zeolite has a molar ratio of SiO/AlOof at least 30, where the mesoporous zeolite comprises zeolite beta, adjusting the pH of the dissolved zeolite solution, aging the pH adjusted dissolved zeolite solution to yield solid zeolite composite from the dissolved zeolite solution, and calcining the solid zeolite composite to produce the zeolite composite catalyst, where the zeolite composite catalyst has a mesostructure comprising at least one disordered mesophase and at least one ordered mesophase, and where the zeolite composite catalyst has a surface area defined by the Brunauer-Emmett-Teller (BET) analysis of at least 600 m/g.

Zeolite composite catalysts for conversion of heavy reformate to xylenes

Composite catalysts having bismuth silicate(s) (e.g. BiSiO) and transition metal oxide(s) (e.g. nickel oxide) impregnated on mesoporous silica supports such as SBA-15, mesoporous silica foam, and silica sol. Methods of making and characterizing the composite catalysts as well as processes for oxidatively dehydrogenating alkanes (e.g. n-butane) and/or alkenes (e.g. 1-butene, 2-butene) to corresponding dienes (e.g. butadiene) employing the composite catalysts are also described.

Mesoporous composite catalysts containing bismuth silicate and transition metal oxide

An integrated process catalytically cracks whole light crude oil into light olefins, especially propylene and ethylene. The process is integrated with an adjacent conventional fluid catalytic cracking unit whereby the heavy liquid product mixture (light and heavy cycle oils) from whole crude oil cracking is mixed with vacuum gas oil (VGO) for further processing. The process comprises recycling total product fraction of light cracked naphtha (LCN) and mixing with fresh crude oil feed. High propylene and ethylene yields are obtained by cracking the whole light crude oil and LCN in an FCC configuration using a mixture of FCC catalyst and ZSM-5 additive at a temperature between, that of conventional FCC and steam cracking.

Catalytic cracking of crude oil to light olefins

Embodiments of processes for producing propylene utilize a dual catalyst system comprising a mesoporous silica catalyst impregnated with metal oxide and a mordenite framework inverted (MFI) structured silica catalyst downstream of the mesoporous silica catalyst, where the mesoporous silica catalyst includes a pore size distribution of at least 2.5 nm to 40 nm and a total pore volume of at least 0.600 cm/g, and the MFI structured silica catalyst has a total acidity of 0.001 mmol/g to 0.1 mmol/g. The propylene is produced from the butene stream via metathesis by contacting the mesoporous silica catalyst and subsequent cracking by contacting the MFI structured silica catalyst.

Dual catalyst system for propylene production

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Dhahran, Saudi Arabia

Abdullah Mohammed Aitani