Catalytic cracking additives based on mesoporous MCM-41 for sulfur removal

Караханов, Э. А.; Glotov, Aleksandr; Nikiforova, A. G.; Вутолкина, А. В.; Ivanov, Andrei O.; Кардашев, С. В.; Максимов, А. Л.; Лысенко, С. В.

doi:10.1016/j.fuproc.2016.07.023

Cited by 41 publications

(15 citation statements)

References 25 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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“…In addition, HDS is difficulty in removing aromatic sulfur molecules, such as dibenzothiophene (DBT) and 4,6‐dimethyldibenzothiophene (4,6‐DMDBT) . For making up the disadvantages of HDS technique, some non‐hydrodesulfurization techniques ( e. g. in situ sulfur removal, reactive adsorption desulfurization, oxidative desulfurization (ODS), alkylation desulfurization and selective adsorption desulfurization (SADS) are being developed as auxiliary methods. Among these technologies, SADS process is regarded as a promising “zero‐sulfur” technology owing to its mild conditions, good desulfurization performance, low cost, and minimal octane loss .…”

Section: Introductionmentioning

confidence: 99%

Effect of Content of Cerium Ion on Brönsted‐Acid‐Catalyzed Reaction of Thiophene over CeY Zeolite Studied by In Situ FTIR Spectroscopy

Qin

et al. 2019

ChemistrySelect

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With NaY zeolite as the raw material, CeY zeolites with different content of Ce ions were prepared by liquid phase ion exchange (LPIE) method. Their chemical compositions were measured by X-ray fluorescence spectrometry (XRF) and in situ Fourier transform infrared spectroscopy (FTIR) techniques. Temperatureprogrammed desorption of ammonia (NH 3 -TPD) and FTIR spectra of pyridine (Py-FTIR) techniques were used to characterize acidity of CeY zeolites. With thiophene (TP, C 4 H 4 S) as probe molecule, adsorption and reaction of TP over CeY zeolites were researched by using in situ FTIR spectroscopy. Finally, it can be found that activity of Brönsted(B)-acid-catalyzed reaction of TP firstly increases and then has little change with the increase of concentration of Ce(NO 3 ) 3 solution (c), while increases with the increase of the exchange times by a combination of adsorption and reaction of TP over CeY zeolite with acidity of CeY zeolite and with location of Ce ion in CeY zeolite. Especially, the sulfurmetal (SÀ M) interaction between TP and Ce ion located in the supercage exhibits more influence than B-acid-catalyzed reaction of TP on adsorption desulfurization of CeY zeolite.[a] Z.

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“…Alkyl-and naphthene-substituted aromatic hydrocarbons, naphthalene, phenanthrene, arenes, thiophenes were observed [41]. Other authors [42] synthesized and characterized MCM-41/γ-Al 2 O 3 , which was covered by La, W, Ni, W, Co, Mo and Zn compounds. The given additives in the mixtures of industrial catalysts revealed that 10% La/MCM-41/-Al 2 O 3 lead to the reduction in organosulfur content in the products of vacuum gasoil cracking up to 40%.…”

Section: Nanocatalystsmentioning

confidence: 99%

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

et al. 2021

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The aquathermolysis process is widely considered to be one of the most promising approaches of in-situ upgrading of heavy oil. It is well known that introduction of metal ions speeds up the aquathermolysis reactions. There are several types of catalysts such as dispersed (heterogeneous), water-soluble and oil soluble catalysts, among which oil-soluble catalysts are attracting considerable interest in terms of efficiency and industrial scale implementation. However, the rock minerals of reservoir rocks behave like catalysts; their influence is small in contrast to the introduced metal ions. It is believed that catalytic aquathermolysis process initiates with the destruction of C-S bonds, which are very heat-sensitive and behave like a trigger for the following reactions such as ring opening, hydrogenation, reforming, water–gas shift and desulfurization reactions. Hence, the asphaltenes are hydrocracked and the viscosity of heavy oil is reduced significantly. Application of different hydrogen donors in combination with catalysts (catalytic complexes) provides a synergetic effect on viscosity reduction. The use of catalytic complexes in pilot and field tests showed the heavy oil viscosity reduction, increase in the content of light hydrocarbons and decrease in heavy fractions, as well as sulfur content. Hence, the catalytic aquathermolysis process as a distinct process can be applied as a successful method to enhance oil recovery. The objective of this study is to review all previously published lab scale and pilot experimental data, various reaction schemes and field observations on the in-situ catalytic aquathermolysis process.

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Catalytic cracking additives based on mesoporous MCM-41 for sulfur removal

Cited by 41 publications

References 25 publications

Interfacial Self-Assembly in Halloysite Nanotube Composites

Interfacial Self-Assembly in Halloysite Nanotube Composites

Effect of Content of Cerium Ion on Brönsted‐Acid‐Catalyzed Reaction of Thiophene over CeY Zeolite Studied by In Situ FTIR Spectroscopy

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

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