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The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process
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 ina...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10673333/ https://www.ncbi.nlm.nih.gov/pubmed/38005320 http://dx.doi.org/10.3390/molecules28227598 |
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author | Abdildina, Kamilla Vassilina, Gulzira Abdrassilova, Albina Klassen, Ivan A. Orynbassar, Raigul Kanapiyeva, Fatima |
author_facet | Abdildina, Kamilla Vassilina, Gulzira Abdrassilova, Albina Klassen, Ivan A. Orynbassar, Raigul Kanapiyeva, Fatima |
author_sort | Abdildina, Kamilla |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-10673333 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-106733332023-11-15 The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process Abdildina, Kamilla Vassilina, Gulzira Abdrassilova, Albina Klassen, Ivan A. Orynbassar, Raigul Kanapiyeva, Fatima Molecules Article 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. MDPI 2023-11-15 /pmc/articles/PMC10673333/ /pubmed/38005320 http://dx.doi.org/10.3390/molecules28227598 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Abdildina, Kamilla Vassilina, Gulzira Abdrassilova, Albina Klassen, Ivan A. Orynbassar, Raigul Kanapiyeva, Fatima The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title | The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title_full | The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title_fullStr | The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title_full_unstemmed | The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title_short | The Role of Catalyst Promotive Additives and Temperature in the Hydroisodewaxing Process |
title_sort | role of catalyst promotive additives and temperature in the hydroisodewaxing process |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10673333/ https://www.ncbi.nlm.nih.gov/pubmed/38005320 http://dx.doi.org/10.3390/molecules28227598 |
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