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Valderrama-Zapata R, García-Sánchez JT, Vargas-Montañez OJ, Rincón-Ortiz SA, Mora-Vergara ID, Pérez-Martínez D, Morales-Valencia EM, Baldovino-Medrano VG. Interplay Between Ni and Brønsted and Lewis Acid Sites in the Hydrodesulfurization of Dibenzothiophene. Chemphyschem 2024; 25:e202300987. [PMID: 38653714 DOI: 10.1002/cphc.202300987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 04/25/2024]
Abstract
Ni-MoS2/γ-Al2O3 catalysts are commonly used in hydrotreating to enhance fossil fuel quality. The extensive research on these catalysts reveals a gap in understanding the role of Ni, often underestimated as an inactive sulfide phase or just a MoS2 promoter. In this work, we focused on analyzing whether well-dispersed supported nickel nanoparticles can be active in the hydrodesulfurization of dibenzothiophene. We dispersed Ni by Strong Electrostatic Adsorption (SEA) method across four supports with different types of acidity: silica (~ neutral acidity), γ-Al2O3 (Lewis acidity), H+-Y zeolite, and microporous-mesoporous H+-Y zeolite (both with Brønsted-Lewis acidity). Our findings reveal that Ni is indeed active in dibenzothiophene hydrodesulfurization, even with alumina and silica as supports, although their catalytic activity declines abruptly in the first hours. Contrastingly, the acid nature of zeolites imparts sustained stability and performance, attributed to robust metal-support interactions. The efficacy of the SEA method and the added mesoporosity in zeolites further amplify catalytic efficiency. Overall, we demonstrate that Ni nanoparticles may perform as a hydrogenating metal in the same manner as noble metals such as Pt and Pd perform in hydrodesulfurization. We discuss some of the probable reasons for such performance and remark on the role of Ni in hydrotreatment.
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Affiliation(s)
- Rodrigo Valderrama-Zapata
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
| | - Julieth T García-Sánchez
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
- Laboratorio Central de Ciencia de Superficies (SurfLab), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
| | - Omar J Vargas-Montañez
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
| | - Sergio A Rincón-Ortiz
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
- Laboratorio Central de Ciencia de Superficies (SurfLab), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
| | - Iván D Mora-Vergara
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
- Grupo de Investigación en Reingeniería, Innovación y Productividad (GREIP), Instituto Universitario de la Paz, Centro de Investigaciones Santa Lucía, km 14 vía, Barrancabermeja, Santander, 687038, Colombia
| | - David Pérez-Martínez
- Centro de Innovación y Tecnología (ICP), Ecopetrol S.A., km 7 vía, Piedecuesta, Santander), A.A., 4185, Colombia
| | - Edgar M Morales-Valencia
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
- Grupo de Investigación en Reingeniería, Innovación y Productividad (GREIP), Instituto Universitario de la Paz, Centro de Investigaciones Santa Lucía, km 14 vía, Barrancabermeja, Santander, 687038, Colombia
| | - Víctor G Baldovino-Medrano
- Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
- Laboratorio Central de Ciencia de Superficies (SurfLab), Universidad Industrial de Santander, Parque Tecnológico Guatiguará, km 2 vía Guatiguará, El Refugio, Piedecuesta, Santander, 681011, Colombia
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Liu F, Zhang Y, Luo Y, Zhai W, Lu Y, Liu J, Li M. Developing an Approach for Calculating Theoretical Minimum Hydrogen Consumption during Catalytic Hydrotreating of Diesel. Chempluschem 2024; 89:e202400009. [PMID: 38520673 DOI: 10.1002/cplu.202400009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/09/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
Identifying the unnecessary H2 consumption existing in diesel hydrotreating process and calculating theoretical minimum H2 consumption are extremely critical for reducing H2 consumption in consideration of carbon reduction and resource utilization improvement. In this work, chemical reactions happened during diesel hydrotreating were categorized into hydrodesulfurization (HDS), hydrodenitrogenation (HDN), saturation of monocyclic aromatic hydrocarbons (MAHs), saturation of polycyclic aromatic hydrocarbons (PAHs), hydrogenation of olefins (HGO) and hydrocracking reactions (HCR). Then, in order to gain insights into where and how much H2 can be reduced, the ideal molecular compositions of the products were analyzed when theoretical minimum H2 was achieved for each type of reactions, which can give a genuine value of average relative molecular weight and average number of moles of H2 consumed per mole of reactants, leading to the establishment of method for calculating theoretical minimum H2 consumption. Additionally, the above method was used to calculate theoretical minimum H2 consumption of five diesel feedstocks with different properties to study the influence of content of S, N and PAHs in the feed on theoretical minimum H2 consumption. This method can provide guidance for experiments of H2 consumption reduction, and also help the refineries to save potential costs of H2.
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Affiliation(s)
- Feng Liu
- Department of Hydrogenation Catalyst, Sinopec Research Institute of Petroleum Processing, 18 Xueyuan Road, Beijing, P.R. China
| | - Yubai Zhang
- Department of Hydrogenation Catalyst, Sinopec Research Institute of Petroleum Processing, 18 Xueyuan Road, Beijing, P.R. China
| | - Yong Luo
- Department of chemical engineering, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Beijing, P.R. China
| | - Weiming Zhai
- Department of Hydrogenation Catalyst, Sinopec Research Institute of Petroleum Processing, 18 Xueyuan Road, Beijing, P.R. China
| | - Yutao Lu
- Department of Hydrogenation Catalyst, Sinopec Research Institute of Petroleum Processing, 18 Xueyuan Road, Beijing, P.R. China
| | - Jiaxu Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, NO.2, Linggong Road, Dalian, Liaoning Province, P.R. China
| | - Mingfeng Li
- Department of Hydrogenation Catalyst, Sinopec Research Institute of Petroleum Processing, 18 Xueyuan Road, Beijing, P.R. China
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