Article
Energy & Fuels
Jin-Lin Mei, Yu Shi, Cheng-Kun Xiao, Ao-Cheng Wang, Ai-Jun Duan, Xi-Long Wang
Summary: Hierarchically porous Beta/SBA-16 (BS) composite materials were synthesized through a two-step in-situ assembly hydrothermal crystallization method, and NiMo catalysts supported on BS with different silica-alumina ratios were prepared. The catalysts exhibited high hydrodesulfurization activity due to the synergistic effects of various factors.
Article
Chemistry, Physical
Ke Yu, Weimin Kong, Zhen Zhao, Aijun Duan, Lian Kong, Xilong Wang
Summary: Mesoporous yolk-shell silica spheres with different shell thicknesses and yolk sizes were synthesized and used as catalyst supports for hydrodesulfurization reactions. The results showed that the shell thickness and yolk size significantly affect the catalytic activity, with the NiMo/Al-Y30S13 catalyst exhibiting the highest activity. Additionally, the mechanisms of DBT and 4,6-DMDBT HDS over NiMo/Al-YxSy materials were proposed.
JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
M. Gonzalez-Ildelfonso, J. Escobar, E. Gordillo-Cruz, P. del Angel, V. A. Suarez-Toriello, J. A. De los Reyes
Summary: In this study, researchers successfully achieved deep removal of refractory dibenzothiophene using catalysts supported on Al2O3 with noble metal modification. Calcined catalysts showed better catalytic activity, while Ru-doped catalysts were detrimental to catalytic activity when not calcined before activation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Applied
Teddy Roy, Julie Rousseau, Antoine Daudin, Gerhard Pirngruber, Benedicte Lebeau, Jean-Luc Blin, Sylvette Brunet
Summary: Mesostructured titania as a support for the CoMoS active phase enhances HDS activity and DDS selectivity, with temperature treatment significantly affecting catalyst activity. Higher activities are obtained after treatment at 380 degrees C, correlating with higher specific surface area and a semicrystalline anatase framework in the mesostructured TiO2 material.
Article
Energy & Fuels
Cheng-Kun Xiao, Yu-Tong Zou, Dong-Ze Li, En-Hua Wang, Ao-Cheng Wang, Dao-Wei Gao, Ai-Jun Duan, Peng Zheng, Xi-Long Wang
Summary: A novel composite material TD composed of TS-1 microcrystalline and DMSNs was prepared, which had an open pore structure and large specific surface area. TD-70 exhibited the best desulfurization activity due to its large open pore structure, good acidity, and perfect dispersion of metallic active sites.
Article
Chemistry, Applied
Pengfei Zhang, Fujun Mu, Yasong Zhou, Qiang Wei, Xiaodong Liu, Qingxiang You, Yacheng Shan, Wuwen Zhou
Summary: Highly ordered mesoporous TiO2-Al2O3 composite oxides were synthesized via a facile evaporation-induced self-assembly (EISA) method, exhibiting high specific surface area, thermal stability, and narrow pore size distributions. The incorporation of TiO2 effectively weakened the support-metal interactions and promoted the formation of more Type II Ni-Mo-S active phases, which greatly enhanced the hydrodesulfurization catalytic performance. The NiMo/TA-0.4 catalyst showed the highest catalytic activity due to its suitable textural properties, thermal stability, and moderate metal-support interactions.
Article
Chemistry, Applied
Di Zhang, Xin-Mei Liu, Yu-Xiang Liu, Zi-Feng Yan
Summary: The pore structure significantly influences the performance of Ni-Mo/γ-Al2O3 catalyst and the desulfurization pathway of 4,6-dimethyldibenzothiophene. By adjusting the pore size, the reducibility of Mo species and the Ni-Mo-S structure can be modified, resulting in different reaction pathways and efficiencies. The design of deep desulfurization catalysts for environmental protection can be optimized based on these findings.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
J. Arturo Mendoza-Nieto, Alfredo Vizueth-Montes de Oca, Lina A. Calzada, Tatiana E. Klimova
Summary: In this study, different SBA-15 supports with varying compositions were used to prepare trimetallic CoMoW and NiMoW catalysts for deep hydrodesulfurization reactions. The addition of titania and zirconia to the supports resulted in higher catalytic activity, particularly for the Ni-promoted samples. Among these catalysts, NiMoW/Zr-SBA-15 showed the highest activity for sulfur removal, with twice the activity compared to NiMoW/SBA-15 analog. The dispersion of metal species on the sulfided NiMoW/Zr-SBA-15 sample was identified as the key factor contributing to its superior activity. Additionally, catalyst selectivity was found to be more dependent on the promoter used rather than the support's chemical composition.
Article
Chemistry, Physical
Shuang Chu, Xiang Li, Roel Prins, Chunhua Wang, Yingya Liu, Anjie Wang, Qiang Sheng
Summary: Ultrasmall Ni2P nanoparticles supported on SiO2 and Al2O3-B2O3 were synthesized using Ni(NO3)2 and H3PO3 as precursors. The introduction of B2O3 to Al2O3 inhibited the formation of AlPO4 during reduction. The Ni-P/SiO2 catalysts with weak Ni2P-support interaction showed high activity, while the Ni-P/AB catalysts with strong Ni2P-support interaction exhibited lower activity.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Yanzeng Dong, Xiaohang Yu, Zhiheng Wang, Xin Li, Yanyan Liu, Ruiyao Gao, Songdong Yao
Summary: The effects of HY addition on the NiMoS active phase in NiMo(NH3) impregnated NiMo/Al2O3-HY catalyst and its role in 4,6-dimethyl-dibenzothiophene hydrodesulfurization were investigated. The results demonstrate that HY can enhance the HDS reaction by altering the morphology of NiMoS nanoclusters, even without involving the isomerization of 4,6-DMDBT. In the absence of strong acid sites, the turnover frequency (TOF) of the NiMo/Al2O3 catalyst was still improved by 90%.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xuehui Li, Xuefeng Wang, Jing Ning, Hongtao Wei, Long Hao
Summary: A novel impregnation-deposition method was used to prepare MoS2/Al2O3 catalysts for hydrodesulfurization. This method improved the surface area of the catalysts by eliminating micropores in the support and adding mesostructured MoS2 particles. The catalysts synthesized by this method exhibited higher reaction conversion rates and hydrogenation/direct-desulfurization ratios compared to those prepared by the conventional impregnation method.
Article
Chemistry, Inorganic & Nuclear
Islam Ali, Tawfik A. Saleh
Summary: The influence of boron element on the activity of a hydrodesulfurization catalyst was evaluated. The addition of boron improved the specific surface area and catalytic activity of the catalyst, highlighting the significant role of boron in enhancing catalyst performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Energy & Fuels
Zhusong Xu, Haoze Wang, Huanqi Kang, Luyuan Zhao, Xiaodong Liu, Wenbing Huang, Yasong Zhou, Qiang Wei
Summary: This article proposes a novel organic additive HEDP for the preparation of efficient HDS catalysts. The effects of HEDP on the nature of tungsten and nickel species supported on the support surface were investigated. The addition of HEDP facilitates the formation of polymerized tungsten oxide species and improves the availability of surface nickel atoms, resulting in the enhancement of catalytic activity.
Article
Chemistry, Physical
Chunhua Wang, Xiang Li, Ying-Ya Liu, Anjie Wang, Qiang Sheng, Chen-Xi Zhang
Summary: In this study, the hydrodesulfurization (HDS) of dibenzothiophene (DBT) over Pd catalysts supported on UiO-66 and its amino-functionalized analogues was investigated. It was observed that the presence of amino groups influenced the reaction pathways of the HDS process.
JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Xiaohang Yu, Yanzeng Dong, Haining Jia, Xin Li, Zhiheng Wang, Yanyan Liu, Ruiyao Gao, Songdong Yao
Summary: In this study, multilayered, spatially ordered, and highly permeable three-dimensional cross-network porous carbons were prepared from waste superabsorbent polymer as supports for NiMo hydrodesulfurization catalysts. The acidification of the carbon support improved the pore structure, increased the acidic surface functional groups, and enhanced the catalytic performance. The NiMo catalyst supported on acidified SAP showed better HDS performance compared to the commercial NiMo catalyst.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Engineering, Chemical
Jesus Andres Tavizon Pozos, Gerardo Chavez Esquivel, Ignacio Cervantes Arista, Jose Antonio de los Reyes Heredia, Victor Alejandro Suarez Toriello
Summary: The study found that NiMo/TiO2-ZrO2 exhibited higher activity in the co-processing reaction of phenol and DBT compared to NiMo/Al2O3-ZrO2, indicating more active sites and lower competition. Both catalysts showed similar functionalities, but the competition levels varied due to the availability of the highly active NiMoS phase.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
M. Gonzalez-Ildelfonso, J. Escobar, E. Gordillo-Cruz, P. del Angel, V. A. Suarez-Toriello, J. A. De los Reyes
Summary: In this study, researchers successfully achieved deep removal of refractory dibenzothiophene using catalysts supported on Al2O3 with noble metal modification. Calcined catalysts showed better catalytic activity, while Ru-doped catalysts were detrimental to catalytic activity when not calcined before activation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
J. A. Arcibar-Orozco, H. E. Zili-Tomita, V. A. Suarez-Toriello, J. O. Saucedo-Lucero
Summary: This study evaluated the use of petcoke as a support material for ZnO in degrading organic pollutants, showing that thermally stabilized ZnO supported with petcoke exhibited the best degradation performance. The results indicate the potential of revaluing petcoke materials as carbon additives to enhance the photocatalytic performance of semiconductors.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Chemistry, Multidisciplinary
David Olvera, Jose A. Rodriguez, Irma Perez-Silva, Gerardo Chavez-Esquivel, J. Andres Tavizon-Pozos
Summary: This study investigated the effects of CaO-supported Li and K catalysts on transesterification reactions, showing that the addition of alkali metals can enhance the basic strength of the catalyst and improve catalytic activity.
Article
Chemistry, Applied
R. Rios-Escobedo, E. Ortiz-Santos, J. A. Colin-Luna, J. N. Diaz de Leon, P. del Angel, J. Escobar, J. A. de los Reyes
Summary: This study aimed to determine the carrier effect on anisole hydrodeoxygenation on 5 wt% Ni catalysts supported on TiO2 and TiO2-ZrO2 carriers, with a Ru-doped catalyst also tested. Results showed that Ru incorporation promoted Ni reducibility and initial reaction rate, favoring benzene selectivity over Ni/TiO2. Ni/TiO2-ZrO2 exhibited higher HDO activity and enhanced acidity compared to Ni/TiO2, resulting in a fully hydrogenated compound (cyclohexane) yield.
TOPICS IN CATALYSIS
(2022)
Article
Engineering, Chemical
Eduardo Sanchez-Ramirez, Brenda Huerta-Rosas, Juan Jose Quiroz-Ramirez, Victor Alejandro Suarez-Toriello, Gabriel Contreras-Zarazua, Juan Gabriel Segovia-Hernandez
Summary: This paper presents a generic optimization framework for solving parameter estimation and catalyst design problems. Kinetic data values were predicted using a stochastic optimization method in conjunction with Aspen Plus and experimental data. The validation results demonstrate the accuracy and good approximation of obtaining kinetic parameters, even in complex cases.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Chemistry, Physical
Itzayana Pinzon-Ramos, Carlos O. Castillo-Araiza, Jesus Andres Tavizon-Pozos, Jose Antonio de los Reyes
Summary: This study evaluates the hydrodeoxygenation (HDO) of phenol over a promising catalytic material, CoMoS/Al2O3-TiO2, and optimizes the catalytic and kinetic performance using a response surface methodology. The results show that a Mo loading of 12.5 wt.% and operating conditions of 360 degrees C and 5.5 MPa lead to the optimal reaction performance.
Article
Chemistry, Physical
Carlos Quilis, Noelia Mota, Barbara Pawelec, Elena Millan, Rufino M. Navarro Yerga
Summary: In this study, intermetallic PdZn-ZnO catalysts were synthesized and the effect of ZnO content on methanol yield was investigated. The results showed that the characteristics of ZnO particles and the contacts between PdZn and ZnO particles played important roles in enhancing methanol production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Chemical
O. A. Luevano-Rivas, J. J. Quiroz-Ramirez, V. A. Suarez-Toriello, B. Huerta-Rosas, E. Sanchez-Ramirez, J. G. Segovia-Hernandez
Summary: This paper proposes an upscaled model using the volume averaging theory to describe the first-order surface chemical reaction process in the catalyst layer. The model is validated through numerical experiments and can be used to design catalytic structures in intensified processes.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Raul Borja-Urby, Oscar Arturo Gonzalez-Vargas, Victor Alejandro Suarez-Toriello, Guillermo Herrera-Perez
Summary: Analytical transmission electron microscopy is a well-established method for characterizing nanomaterials, particularly crystalline ones. In this study, spectroscopy techniques were used to determine the oxidation state of CeO2 nanoparticles incorporated into the compound Ce-MCM-41.
Article
Chemistry, Physical
Trino A. Zepeda, Sandra Aguirre, Yunuen I. Galindo-Ortega, Alfredo Solis-Garcia, Rufino M. Navarro Yerga, Barbara Pawelec, Juan C. Fierro-Gonzalez, Sergio Fuentes
Summary: Mn-promoted bulk iron catalysts with high specific surface area were synthesized. These catalysts exhibited better textural properties than the bare Fe2O3 catalyst, resulting in higher catalytic activity. The most active catalyst showed high stability and selectivity to C2-C4 hydrocarbons.
Article
Engineering, Civil
Estefania Aguirre-Alvarez, Liliana Lizarraga-Mendiola, Claudia Coronel-Olivares, Jesus Andres Tavizon-Pozos, Gabriela A. Vazquez-Rodriguez
Summary: The aim of this study was to assess the performance of a plant palette in treating light greywater (LGW) using a nature-based solution (NbS). Various filter media layers (soil, granular activated carbon, zeolite, sand, and gravel) were combined with specific plant species in containers. After eight weeks of weekly feeding with 500 mL of LGW, the quality of the infiltrated water was compared to that of the original LGW in terms of several parameters. The effluents treated with certain plant species met the Mexican water reuse regulations, indicating the potential optimization of a circular water economy at the household level.
INGENIERIA DEL AGUA
(2023)
Review
Engineering, Environmental
Oscar M. Rodriguez-Narvaez, Kannan Nadarajah, V. A. Suarez-Toriello, Erick R. Bandala, Ashantha Goonetilleke
Summary: This study reviews the latest research on the synthesis, characteristics, water treatment applications, and life cycle analysis of engineered hydrochar (EHC). It highlights the lack of knowledge regarding the environmental impacts of EHC production, application, and disposal. The study found that the modification of hydrochar can improve its adsorption capacity. Future research should focus on understanding the environmental footprint of EHC and conducting life cycle assessments.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Energy & Fuels
J. I. Cervantes-Arista, J. E. Herbert-Pucheta, V. A. Suarez-Toriello, J. A. Toledo-Antonio, E. Lopez-Salinas
Summary: This work applies Solid-State Nuclear Magnetic Resonance (SS-NMR) to characterize the structural and motional aspects of petcoke and its derived humic-like products from alkaline wet oxidation. The results show that alkaline wet oxidation provides structural heterogeneity and flexibility, directly correlated with an increase in oxygen content, O/C ratio, reduction of aromatic stack layers, reduction of crystallite size and increase in C-O and O-H dipoles.
