Propene production at low temperature by bimetallic Ni-Mo and Ni-Re catalysts on mesoporous MCM-41 prepared using template ion exchange

Perea, Leo Alvarado; Felischak, Matthias; Wolff, Tanya; Gaona, José A.; Hamel, Christof; Seidel‐Morgenstern, A.

doi:10.1016/j.fuel.2020.119031

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…The samples are mainly characterized by weak acid sites of 64-68%. An increase in the strength and number of acid sites on the carrier's surface with the introduction of a molybdenum source can be explained by an increase in the number of coordinately unsaturated Al 3+ ions due to the tendency of Mo 6+ ions to "pull" oxygen ions onto themselves [32].…”

Section: Physicochemical Characteristics Of Bifunctional Catalystsmentioning

confidence: 99%

The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process

Abdildina,

Vassilina,

Abdrassilova

et al. 2023

Molecules

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One of the valuable fractions of paraffinic oils is the diesel fraction, which can be used as a commercial fuel. However, the high content of alkanes of normal structure (~10–40%) in the diesel fraction leads to a deterioration in the performance characteristics of the fuel and, as a result, the inability to use the diesel fraction without additional processing in the cold season at lower temperatures, which is critical for many regions with cold winters. The process of catalytic dewaxing is one of the most promising ways to improve the low-temperature characteristics of diesel fractions. This work is devoted to studying the activity of promoted Ni, Mo, and Ni-Mo catalysts based on mesoporous aluminosilicate and pre-activated bentonite in dewaxing diesel fractions. The effect of the nature and content of promoting additives on the activity of bifunctional catalysts in the process of hydroisodewaxing of diesel fraction in a flow-type reactor in the temperature range of 260–340 °C, pressure of 2 MPa and feed space velocity of 1 h–1 was studied. It is shown that the synthesized bifunctional catalysts based on mesoporous aluminosilicate and pre-activated bentonite from the Tagan field (Ni/MAS-H-bentonite, Mo/MAS-H-bentonite, and Ni-Mo/MAS-H-bentonite) have the necessary balance of Lewis and Bronsted acid centers strengths. It allows them to selectively conduct the hydroisodewaxing process. It has been established that the use of the synthesized 5% Ni-1% Mo/MAS-H-bentonite bifunctional catalyst in the diesel fractions hydroisodewaxing process under optimal process conditions makes it possible to obtain diesel fuel with low-temperature characteristics that meet the requirements for cold climate fuels: cold filter plugging point (CFPP)—minus 33 °C, flash point in a closed cup—39 °C and pour point—minus 36 °C.

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Section: Physicochemical Characteristics Of Bifunctional Catalystsmentioning

confidence: 99%

The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process

Abdildina,

Vassilina,

Abdrassilova

et al. 2023

Molecules

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“…The need for polypropylene up to 64% and their derivatives from propylene oxide, acrylonitrile, oxo alcohol, and others reach 36% increases annually [4], raising the global production rate of propylene by 4-5%. In the chemical industry, propene is regarded as one of the fundamental ingredients because it is used to make many significant products, including polypropene and propene oxide [5]. Steam thermal cracking of naphtha, catalytic cracking of C4 alkenes [6], catalytic propene dehydrogenation [7], and catalytic dehydration of IPA [8,9] are the processes used in the industrial manufacture of propene.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Conversion of Isopropanol to Propene Over CeFeO3/Spherical Silica Nanocomposite

ElHamdy,

Said,

Khalil

2024

Sohag Journal of Sciences

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Cerium iron mixed oxide (CFO) nanocomposite materials supported on spherical silica particles were explored for gas phase dehydration of isopropyl alcohol (IPA). The samples were formed by a sol-gel process. Utilization of silica as a matrix for reducible CeO2-Fe2O3 mixed oxides formation of thermally stabilized textural CeO2-Fe2O3 /silica nanocomposite materials, Thus, a series of 10-30% (w/w) CFO/silica was directly formed, dried, and calcined at 550 o C. XRD, TG-DTA, ATR-FTIR, nitrogen adsorption−desorption, and TEM images were used to analyze the samples. The catalytic performance of materials has been estimated. The catalytic activity of the catalytic materials was evaluated to measure the dehydration reaction of IPA at 250 o C in the air atmosphere. According to the results, 20% CeFeO3/silica calcined at 550 o C exhibits a high conversion of IPA amounts to ~89% with selectivity (100%) for propene, as well as a high rate of propene production (7.9 m mol.h -1 ). The higher catalytic activity of the supported catalyst was related to its improved textural and thermal stability, based on these results, propene is efficiently produced.

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Selective conversion of ethylene to propylene over rhenium-containing heterogeneous catalysts

Vikanova,

Kustov,

Makhov

et al. 2024

Funct. Mater. Lett.

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The development of new technologies for effective propylene production is a highly important scientific and industrial task nowadays. In this study, the conversion of ethylene to propylene (ETP reaction) was explored over rhenium-containing catalysts supported on a ZrO2 carrier at temperatures 100°C–200°C and atmospheric pressure using a flow catalytic reactor with a fixed catalyst bed without the use of any other hydrocarbons or dilutants. The effect of rhenium presence in the catalysts on the activity and propylene selectivity was examined.

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Propene production at low temperature by bimetallic Ni-Mo and Ni-Re catalysts on mesoporous MCM-41 prepared using template ion exchange

Cited by 4 publications

References 44 publications

The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process

The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process

Highly Selective Conversion of Isopropanol to Propene Over CeFeO3/Spherical Silica Nanocomposite

Selective conversion of ethylene to propylene over rhenium-containing heterogeneous catalysts

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