Aluminosilicates supported La-containing sulfur reduction additives for FCC catalyst: Correlation between activity, support structure and acidity

Glotov, Aleksandr; Левшаков, Н. С.; Вутолкина, А. В.; Лысенко, С. В.; Караханов, Э. А.; Винокуров, В. А.

doi:10.1016/j.cattod.2018.10.009

Cited by 30 publications

(12 citation statements)

References 33 publications

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“…These pores are larger than in crystalline zeolites, and MCM-41 materials possess new features for applications in catalysis, separation, and purification. This mesostructured silica is prospective in larger molecule processing in catalytic cracking and hydrocracking, − but its commercial application is limited by the low-temperature and steaming stabilities.…”

Section: Templating Mesosilica On Clay Nanotubesmentioning

confidence: 99%

Interfacial Self-Assembly in Halloysite Nanotube Composites

Lvov

Panchal

et al. 2019

Langmuir

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A self-assembly of clay nanotubes in functional arrays for the production of organized organic/inorganic heterostructures is described. These 50-nm-diameter natural alumosilicate nanotubes are biocompatible. Halloysite allows for 10–20 wt % chemical/drug loading into the inner lumen, and it gives an extended release for days and months (anticorrosion, self-healing, flame-retardant, antifouling, and antibacterial composites). The structured surfaces of the oriented nanotube micropatterns enhance interactions with biological cells, improving their capture and inducing differentiation in stem cells. An encapsulation of the cells with halloysite enables control of their growth and proliferation. This approach was also developed for spill petroleum bioremediation as a synergistic process with Pickering oil emulsification. We produced 2–5-nm-diameter particles (Au, Ag, Pt, Co, Ru, Cu–Ni, Fe3O4, ZrO2, and CdS) selectively inside or outside the aluminosilicate clay nanotubes. The catalytic hydrogenation of benzene and phenol, hydrogen production, impacts of the metal core–shell architecture, the metal particle size, and the seeding density were optimized for high-efficiency processes, exceeding the competitive industrial formulations. These core–shell mesocatalysts are based on a safe and cheap natural clay nanomaterial and may be scaled up for industrial applications.

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Section: Templating Mesosilica On Clay Nanotubesmentioning

confidence: 99%

Interfacial Self-Assembly in Halloysite Nanotube Composites

Lvov

Panchal

et al. 2019

Langmuir

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“…There has been a considerable rise in the demand for heavy oil feedstock for refinery aimed at manufacturing gasoline with low sulphur which is attributed to the stringent environmental promulgations in respect to fossil fuels [50]. The reinforcement of efficient hydrodesulphurization (HDS) catalysts has been steered by the requisite of manufacturing ultra-clean fuels for protecting the environment [51].…”

Section: Ecological Restrictions On Quality Characteristics Of Oilsmentioning

confidence: 99%

“…The only known support utilized in industrial HDS catalysts is γ-Al 2 O 3 . Various studies have been intensified on many other supports such as SiO 2 , carbon oxides, and mixed oxides, while the promising materials being mesoporous silica oxides which are used as support possessed an ordered mesoporous framework [50]. Alumina-based supports have proven to be the common supports for the hydrotreatment (i.e., hydrodesulphurization) of petroleum [91], as heterogeneous catalysts as well as sorbents for huge molecules [78].…”

Section: Support For Metallic Compositesmentioning

confidence: 99%

Sustainable development and enhancement of cracking processes using metallic composites

et al. 2021

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Metallic composites represent a vital class of materials that has gained increased attention in crude oil processing as well as the production of biofuel from other sources in recent times. Several catalytic materials have been reported in the literature for catalytic cracking, particularly, of crude oil. This review seeks to provide a comprehensive overview of existing and emerging methods/technologies such as metal–organic frameworks (MOFs), metal–matrix composites (MMCs), and catalytic support materials, to bridge information gaps toward sustainable advancement in catalysis for petrochemical processes. There is an increase in industrial and environmental concern emanating from the sulphur levels of oils, hence the need to develop more efficient catalysts in the hydrotreatment (HDS and HDN) processes, and combating the challenge of catalyst poisoning and deactivation; in a bid to improving the overall quality of oils and sustainable use of catalyst. Structural improvement, high thermal stability, enhanced cracking potential, and environmental sustainability represent the various benefits accrued to the use of metallic composites as opposed to conventional catalysts employed in catalytic cracking processes.

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“…In addition to the complete characterization of the feedstock, it is essential to characterize and evaluate the catalysts to be used in the process. FCC catalysts are compounds, with Y zeolite being their most important component (15–40 wt %), which is deposited on an active or inert matrix together with specific additives that depend on many operation and commercial target issues. ,− Considering the specific process conditions and the nature of the feedstock, the catalyst should meet a number of requirements, such as thermal and hydrothermal resistance, tolerance toward metal poisoning (especially, Ni and V), appropriated coke yield, and low resistance to intraparticle mass transfer, in order to achieve the desired performance. Thus, tailor-made catalysts are formulated for the FCC process.…”

Section: Introductionmentioning

confidence: 99%

Performance of Equilibrium FCC Catalysts in the Conversion of the SARA Fractions in VGO

et al. 2020

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Two equilibrium FCC catalysts of the octane-barrel (ECAT-D) and resid (ECAT-R) types were used in the cracking of a typical vacuum gasoil (VGO) and its saturated (SF), aromatic (AF), and resin (RF) fractions. The experiments were carried out in a batch, fluidized bed laboratory CREC Riser Simulator reactor. The reaction temperature was 500 °C, the catalyst-to-oil relationship was 1, with 0.2 g of the catalyst being used in each experiment, and the reaction times were 0.7, 1.5, and 3 s. The ranking of the reactivities of the different feedstocks was SF > VGO > AF > RF over both catalysts. While the AF and RF fractions yielded more gasoline than the SF fraction, the latter showed the highest yields of LPG. The coke forming trend followed the order SF < VGO < AF < RF. Even though catalyst ECAT-D, with a higher and stronger acidity, was more active than catalyst ECAT-R, which has less acidity and better textural properties (higher mesoporosity and pore diameter), the latter was less affected by coke deposition, considering the changes in the specific surface area and acidic properties after use. Coke impacted more severely on Bronsted acid sites than on Lewis sites, particularly when the AF and RF fractions were used. The stronger acid sites were more severely affected by coke, particularly in catalyst ECAT-D. The negative effect on strong acidic sites was consistent with the increasing basic character of the feedstocks, following the order SF < VGO < AF < RF.

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Aluminosilicates supported La-containing sulfur reduction additives for FCC catalyst: Correlation between activity, support structure and acidity

Cited by 30 publications

References 33 publications

Interfacial Self-Assembly in Halloysite Nanotube Composites

Interfacial Self-Assembly in Halloysite Nanotube Composites

Sustainable development and enhancement of cracking processes using metallic composites

Performance of Equilibrium FCC Catalysts in the Conversion of the SARA Fractions in VGO

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