P. P. Mukhacheva, Yu. V. Vatutina, K. A. Nadeina, I. G. Danilova, P. P. Dik, V. P. Pakharukova, E. Yu. Gerasimov, I. P. Prosvirin, O. V. Klimov, A. S. Noskov
{"title":"有机和无机增塑剂对氧化铝载体及CoMo/Al2O3柴油馏分加氢处理催化剂性能的影响第1部分。氧化铝支持","authors":"P. P. Mukhacheva, Yu. V. Vatutina, K. A. Nadeina, I. G. Danilova, P. P. Dik, V. P. Pakharukova, E. Yu. Gerasimov, I. P. Prosvirin, O. V. Klimov, A. S. Noskov","doi":"10.1134/S207511332570145X","DOIUrl":null,"url":null,"abstract":"<p>The influence of organic (acetic acid, citric acid, and diethylene glycol) and inorganic (nitric acid and ammonia) plasticizing agents on the properties of alumina supports has been studied. Alumina supports were investigated using methods of elemental CHNS analysis, X-ray diffraction (XRD), low-temperature nitrogen adsorption–desorption, temperature-programmed desorption of NH<sub>3</sub> (TPD-NH<sub>3</sub>), and FT-IR spectroscopy of adsorbed pyridine. The mechanical strength of the samples has been determined. The variation of the plasticizing agent had a significant impact on the textural characteristics of the obtained supports. The use of an aqueous ammonia solution as a plasticizing agent led to an increase in the pore volume in the support and an increase in the pore portion of 13–50 nm by 4–16 times compared to other samples. In the case of the alumina support plasticized with diethylene glycol there is a decrease in pore volume in the sample by almost 2 times compared to the sample plasticized with ammonia, which is explained by an increase in the proportion of pores smaller than 7 nm by 9–35%. No significant influence of the plasticizing agent on the concentration of acid sites of alumina was observed. Among the studied series, a sample of alumina prepared with the addition of nitric acid stood out. The results of TPD-NH<sub>3</sub> and IR spectroscopy of adsorbed pyridine show a decrease in the concentration of Lewis acid sites (LAS) for this sample compared to the other samples.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 5","pages":"1371 - 1378"},"PeriodicalIF":0.3000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Influence of Organic and Inorganic Plasticizing Agents on the Properties of Alumina Supports and CoMo/Al2O3 Hydrotreating Catalysts of Diesel Fractions. Part 1. Alumina Supports\",\"authors\":\"P. P. Mukhacheva, Yu. V. Vatutina, K. A. Nadeina, I. G. Danilova, P. P. Dik, V. P. Pakharukova, E. Yu. Gerasimov, I. P. Prosvirin, O. V. Klimov, A. S. Noskov\",\"doi\":\"10.1134/S207511332570145X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The influence of organic (acetic acid, citric acid, and diethylene glycol) and inorganic (nitric acid and ammonia) plasticizing agents on the properties of alumina supports has been studied. Alumina supports were investigated using methods of elemental CHNS analysis, X-ray diffraction (XRD), low-temperature nitrogen adsorption–desorption, temperature-programmed desorption of NH<sub>3</sub> (TPD-NH<sub>3</sub>), and FT-IR spectroscopy of adsorbed pyridine. The mechanical strength of the samples has been determined. The variation of the plasticizing agent had a significant impact on the textural characteristics of the obtained supports. The use of an aqueous ammonia solution as a plasticizing agent led to an increase in the pore volume in the support and an increase in the pore portion of 13–50 nm by 4–16 times compared to other samples. In the case of the alumina support plasticized with diethylene glycol there is a decrease in pore volume in the sample by almost 2 times compared to the sample plasticized with ammonia, which is explained by an increase in the proportion of pores smaller than 7 nm by 9–35%. No significant influence of the plasticizing agent on the concentration of acid sites of alumina was observed. Among the studied series, a sample of alumina prepared with the addition of nitric acid stood out. 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The Influence of Organic and Inorganic Plasticizing Agents on the Properties of Alumina Supports and CoMo/Al2O3 Hydrotreating Catalysts of Diesel Fractions. Part 1. Alumina Supports
The influence of organic (acetic acid, citric acid, and diethylene glycol) and inorganic (nitric acid and ammonia) plasticizing agents on the properties of alumina supports has been studied. Alumina supports were investigated using methods of elemental CHNS analysis, X-ray diffraction (XRD), low-temperature nitrogen adsorption–desorption, temperature-programmed desorption of NH3 (TPD-NH3), and FT-IR spectroscopy of adsorbed pyridine. The mechanical strength of the samples has been determined. The variation of the plasticizing agent had a significant impact on the textural characteristics of the obtained supports. The use of an aqueous ammonia solution as a plasticizing agent led to an increase in the pore volume in the support and an increase in the pore portion of 13–50 nm by 4–16 times compared to other samples. In the case of the alumina support plasticized with diethylene glycol there is a decrease in pore volume in the sample by almost 2 times compared to the sample plasticized with ammonia, which is explained by an increase in the proportion of pores smaller than 7 nm by 9–35%. No significant influence of the plasticizing agent on the concentration of acid sites of alumina was observed. Among the studied series, a sample of alumina prepared with the addition of nitric acid stood out. The results of TPD-NH3 and IR spectroscopy of adsorbed pyridine show a decrease in the concentration of Lewis acid sites (LAS) for this sample compared to the other samples.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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