The mesoporous aluminosilicate application as support for bifunctional catalysts for <i>n</i>-hexadecane hydroconversion

Vassilina, Gulzira; Umbetkaliyeva, Kamilla; Abdrassilova, Albina; Vassilina, Tursunay; Zakirov, Zhassulan

doi:10.1515/chem-2022-0134

Cited by 6 publications

(6 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Samples of catalysts with the MAS:H-bentonite ratio of 35:65 have optimal acid characteristics -the higher the content of bentonite in the synthesized catalysts, the greater the strength and concentration of acid sites, which is not favorable for the hydroisomerization process. The catalytic efficiency of the developed catalysts was considered and confirmed in earlier studies by the authors of this article [8].…”

Section: нефтехимияsupporting

confidence: 66%

“…We utilized previous reported literature procedures and practices for synthesizing mesoporous aluminosilicatws [8]. The synthesized sample of mesoporous aluminosilicate (MAS) became one of the components of the support of the bifunctional catalyst and was T НЕФТЕХИМИЯ placed in a porcelain bowl together with bentonite from the Tagan field (East Kazakhstan region, Kazakhstan).…”

Section: Experimental Section Materials Synthesismentioning

confidence: 99%

See 1 more Smart Citation

The Role of the Binder in the Composition of Catalysts for the Hydroisomerization Process

ABDILDINA¹,

VASSILINA²,

KLASSEN³

2022

NiG

View full text Add to dashboard Cite

The authors of the publication synthesized bifunctional catalysts based on mesoporous aluminosilicates (MAS) with different binder contents (80 and 65%, respectively) in two ways: the first method consisted in mixing the synthesized aluminosilicate with preliminarily activated bentonite, which was then promoted. Whereas, according to the second method, the synthesized mesoporous aluminosilicate was first promoted, only then mixed with bentonite. The synthesis of bifunctional bimetallic catalysts was carried out using the wet impregnation technique. Acid and physicochemical characteristics were studied using the DRIFT method, TPD-NH3 and the standard nitrogen adsorption/desorption method. It was found that the samples of catalysts with the ratio MAS:H-bentonite = 35:65, prepared according to the first method, have optimal acid characteristics and physicochemical properties.

show abstract

Section: нефтехимияsupporting

confidence: 66%

Section: Experimental Section Materials Synthesismentioning

confidence: 99%

The Role of the Binder in the Composition of Catalysts for the Hydroisomerization Process

ABDILDINA¹,

VASSILINA²,

KLASSEN³

2022

NiG

View full text Add to dashboard Cite

show abstract

“…The authors studied and presented the physicochemical characteristics of mesoporous aluminosilicate and some catalysts [21]. In the current article, the additional results are presented.…”

Section: Physicochemical Characteristics Of Bifunctional Catalystsmentioning

confidence: 99%

“…Synthesized mesoporous aluminosilicate (MAS) samples became one of the b tional composite support components and the bentonite of the Tagan field (East K stan region, Kazakhstan). The use of preliminarily activated bentonite as a second c nent for the catalyst support (MAS-H-bentonite) was conditioned by its access cheapness, developed specific surface area, durability, and thermal stability [19,20] The authors studied and presented the physicochemical characteristics of m rous aluminosilicate and some catalysts [21]. In the current article, the additional are presented.…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…Схемы получения мезопористого алюмосиликата и бифункционального катализатора на его основе представлены на рисунках 1 и 2. Полное описание методикиих синтеза представлено в следующей публикации [12].…”

Section: Nowadays There Is a Number Of Research Papers And A Certain ...unclassified

Mesoporous Aluminosilicates as Promising Carriers of Catalysts for Petrochemical Processes

ABDRASSILOV¹,

ABDILDINA²,

VASSILINA³

et al. 2022

NiG

View full text Add to dashboard Cite

Nowadays there is a number of research papers and a certain interest in some mesoporous materials and the study of their properties. Mesoporous materials have every chance to become components of industrial heterogeneous catalysts. Catalysts based on mesoporous aluminosilicates are widely used in the petrochemical industry for hydrogenation, reforming, hydroisomerization, hydrocracking, hydrodearomatization, etc. In this article mesoporous aluminosilicates (MAS) were synthesized by copolycondensation of tetraethylortosilicate and secondary aluminum butoxide. Hexadecylamine was used as a template. The physico-chemical characteristics of a synthesized structured mesoporous aluminosilicate and a bifunctional catalyst based on it were studied by nitrogen adsorption/desorption, X-ray diffraction, SEM and TPDA. It was found that the obtained samples have an ordered mesoporous structure and possess the necessary strength and concentration of acid centers for use as acid components of bifunctional catalysts of various petrochemical processes.

show abstract

The mesoporous aluminosilicate application as support for bifunctional catalysts for n-hexadecane hydroconversion

Cited by 6 publications

References 50 publications

The Role of the Binder in the Composition of Catalysts for the Hydroisomerization Process

The Role of the Binder in the Composition of Catalysts for the Hydroisomerization Process

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

Mesoporous Aluminosilicates as Promising Carriers of Catalysts for Petrochemical Processes

Contact Info

Product

Resources

About