Article
Chemistry, Physical
Yue Liu, Jing-zhi Tian, Yong-jie Zheng, He-shan Zheng, Shuo Li, Tao Jing, Hong-rui Zhang, Jing-ying Shao
Summary: A core-shell porous catalyst coated with TiO2-fibrous silica (KCC-1) was prepared and showed excellent catalytic desulfurization performance. The unit desulfurization rate was significantly improved without additional oxidants. The adsorption-catalysis-resorption desulfurization system was effective, enhancing the reaction rate and achieving selective adsorption and coupling desulfurization. Furthermore, the spent catalyst could be regenerated without a decrease in desulfurization rate.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Musa O. Azeez, Abdulkadir Tanimu, Khalid Alhooshani, Saheed A. Ganiyu
Summary: This study reports the synthesis of mesoporous metal-modified nitrogen doped activated carbon (AC-N-Mo) from date seeds and its application in the selective adsorptive desulfurization of dibenzothiophene (DBT). The AC-N-Mo shows higher adsorption capacity for DBT and exhibits excellent selectivity. The enhanced adsorption performance is attributed to the synergistic effect of nitrogen heteroatom.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Chawan Saiwan Othman, Yousif Mustafa Salih, Luqman Omer Hamasalih
Summary: This study conducted desulfurization experiments on DBT in diesel fuel using different adsorbents, and the hybrid activated charcoal/mixed metal oxide showed the best desulfurization performance. The results showed that under optimized conditions, the adsorption capacity of this adsorbent for DBT was as high as 23.8 mgS.g-1, with a sulfur removal rate of 91.1%.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Maryam Fayazi, Masoud Ghanei-Motlagh
Summary: The PET-AC/Cu(II)-A beads prepared by cross-linking technology showed high adsorption capacity, reusability, and potential as a desulfurization adsorbent for fuels.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Environmental Sciences
Xinsheng Li, Shuo Ai, Yongchun Huang, Chengdu Huang, Wanguo Yu, Zhijuan Mao
Summary: In this study, metallic copper loaded on SBA-15 mesoporous silica proved to be an efficient adsorbent for the removal of DBT in fuel oils. Analysis using Raman spectroscopy, XPS, and Auger spectroscopy provided insights into the interaction mechanism between DBT and copper, and the complete recovery of adsorption capacity was achieved successfully.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Amin Kazemi-Beydokhti, Hassan Hassanpour-souderjani
Summary: In order to address environmental problems associated with sulfur compounds, various surface modifications of carbon nanostructures were used to effectively remove aromatic sulfur compounds from hydrocarbon fuels. Acid treatment and polymer coating techniques were employed for physical and chemical surface modifications. The results showed that this surface modification significantly improved the removal of impurities from hydrocarbon fuels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Qingwen Shan, Juan Zhang, Yajuan Wang, Wenqiang Liu
Summary: Two ionic liquid-type UiO-66 (Mod-UiO-66@(IL)) were synthesized by the hydrothermal method for studying the adsorption desulfurization performance of DBT in model oil. Among them, Mod-UiO-66@(IL1) showed the best adsorption performance with a maximum adsorption capacity of 43.52 mg/g for DBT, and also exhibited good removal effect on different sulfur compounds.
Article
Energy & Fuels
M. L. S. N. Vishnu Priya, B. Arunraj, N. Rajesh
Summary: A mesoporous carbon material produced from newspaper waste was utilized for desulfurization, showing efficient removal of DBT and good regeneration properties. Characterization techniques confirmed the effectiveness of the mesoporous carbon in the desulfurization process.
Article
Engineering, Chemical
Ge Zhang, Fan Yang, Xiaodong Liu, Haiyong Zhao, Sai Che, Jianzhong Li, Xingru Yan, Siyuan Sun, Fengjiang Chen, Chong Xu, Hongchen Liu, Qiang Wei, Yongfeng Li
Summary: This study synthesized N, P co-doped porous carbon network as an efficient absorbent for dibenzothiophene (DBT) removal from oil. The unique micro-mesoporous structure ensured shape-selective adsorption and enhanced DBT adsorption strength. The synergistic effect of N, P co-doping greatly reduced the adsorption energy for DBT, showing significant affinity to DBT.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Eleni D. Salonikidou, Dimitrios A. Giannakoudakis, Eleni A. Deliyanni, Konstantinos S. Triantafyllidis
Summary: The main objective of this work is to evaluate the efficiency of adsorptive deep desulfurization under ambient conditions and study the effects of competitors in real fuels. By examining various activated carbons and model fuels, the study found that oxidation treatment enhances the adsorption capacity of carbons and can effectively remove sulfur compounds from the model fuel.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Kyriaki Kakamouka, Chrystalla Gavriel, Eleni D. Salonikidou, Dimitrios A. Giannakoudakis, Margaritis Kostoglou, Konstantinos S. Triantafyllidis, Eleni A. Deliyanni
Summary: The efficiency of deep desulfurization for commercial activated porous carbon and its chemically modified counterparts was evaluated through dynamic and batch experiments. The oxidation process affected the carbon's physicochemical features, resulting in controversial effects on desulfurization efficiency. The oxidized carbon showed slightly negative performance in column tests but positive performance in batch tests.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
John H. Jacobs, Nancy Chou, Kevin L. Lesage, Ye Xiao, Josephine M. Hill, Robert A. Marriott
Summary: Activated carbons have been found to possess good selective adsorption capability for removing sulfur dioxide from flue gas, especially in the presence of water. The activated carbons prepared with KOH and NaOH showcased the highest SO2 adsorption capacity under wet conditions. Additionally, the adsorption performance of all activated carbons remained unchanged after multicomponent adsorption of wet SO2.
Article
Energy & Fuels
Xiaoyu Zhou, Hang Liu, Sixiao Liu, Lei Zhang, Tianyi Wang, Chengyin Wang, Dawei Su
Summary: By using the α-Fe2O3/g-C3N4/HNTs composite material, efficient photocatalytic desulfurization of dibenzothiophene in model oil under visible light can be achieved. The unique structure of the composite material promotes the transfer and separation of photogenerated carriers, thereby enhancing the efficiency of photocatalytic reactions.
Article
Engineering, Environmental
Seyyed Salar Meshkat, Ebrahim Ghasemy, Alimorad Rashidi, Omid Tavakoli, Mehdi Esrafili
Summary: Nitrogen and sulfur co-doped carbon nanotubes (NS-CNT) adsorbents were successfully synthesized and applied for the removal of two types of mercaptans, demonstrating high removal efficiency and cycling stability. Characterization of NS-CNT through various techniques revealed that the adsorption process could be described using the Freundlich model and pseudo second order model.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Environmental Sciences
Reyson M. Feliciano, Benny Marie B. Ensano, Mark Daniel G. de Luna, Cybelle M. Futalan, Ralf Ruffel M. Abarca, Ming-Chun Lu
Summary: Desulfurization of liquid fuels is essential to reduce the emission of sulfur oxides and particulates during fuel combustion. In this study, the desorption mechanism of sulfur from neutral activated alumina saturated with dibenzothiophene sulfone was investigated, with batch experiments showing that acetone had superior desorption efficiency compared to other eluents. The desorption kinetics followed a pseudo-second-order equation with chemisorption as the rate-determining step, and thermodynamics study revealed the spontaneous and endothermic nature of sulfur desorption using acetone as eluent. Overall, neutral activated alumina was proven to be an efficient and reusable adsorbent for sulfur compound removal from liquid fossil fuels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Yajie Tian, Bofeng Zhang, Siyuan Gong, Li Wang, Xiangwen Zhang, Congzhen Qiao, Guozhu Liu
Summary: Pillared nanosheet HZSM-5 zeolite films prepared using a dual template method exhibited higher surface area, mesoporous volume, heat sink, and catalytic stability compared to conventional microporous zeolite films, leading to improved thermal management and high conversion rates.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Yutong Wang, Siyuan Gong, Hongwang Liu, Guozhu Liu
Summary: In this study, the potential enhancing mechanisms of Pt@FGS nanoparticles in the catalytic decomposition of p-menthane were explored using ReaxFF-MD simulations. The results showed that Pt@FGS nanoparticles exhibited good catalytic reactivity with a reduction of activation energy.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Chemistry, Physical
Bofeng Zhang, Guozhu Li, Sibao Liu, Yucai Qin, Lijuan Song, Li Wang, Xiangwen Zhang, Guozhu Liu
Summary: Metal clusters encapsulated in nanosized zeolites exhibit higher specific activity in propane dehydrogenation due to shorter diffusion length and higher surface permeability, which are achieved by the epitaxial highly crystallized zeolite structure.
Article
Chemistry, Multidisciplinary
Yanjun Li, Shixuan Ren, Guozhu Liu, Zhenxia Liu, Ruifeng Ma
Summary: The TCA-2 coating can inhibit the coking of lubricating oil on the metal surface within a certain temperature range, reduce surface activity, and improve heat resistance. It also shows good compatibility with lubricating oil, effectively reducing the surface temperature of the oil side.
Article
Energy & Fuels
Hongwei Li, Yutong Wang, Li Wang, Xiangwen Zhang, Guozhu Liu
Summary: Under supercritical conditions, decalin can act as a hydrogen donor to suppress coke deposition and promote the pyrolysis and conversion of JP-10, while reducing the formation of polycyclic aromatic hydrocarbons.
Article
Nanoscience & Nanotechnology
Chunyu Zhang, Chan Wu, Li Wang, Guozhu Liu
Summary: The controllable synthesis of specific defective carbon catalysts is essential for the two-electron oxygen reduction reaction (2e- ORR) to generate H2O2. In this study, Mo-CDC-ns, a type of defective carbon catalyst, was successfully prepared by electrochemical activation. The Mo-CDC-ns catalyst exhibited increased kinetic current density and selectivity for H2O2 generation compared to the parent Mo2C/C catalyst, and its defect types were identified as edge defect and vacancy defect sites. Theoretical calculations showed that the defective structure of Mo-CDC-ns had a moderate reaction free energy and smaller energy barrier for 2e- ORR.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Baokang Xu, Yutong Wang, Guozhu Liu
Summary: In this study, the reactive force-field molecular dynamics (ReaxFF-MD) simulation was used to investigate the palladium-catalyzed pyrolysis and steam reforming of n-dodecane (n-C12H26). The results showed that pyrolysis reaction supplied C1 and C2 components, and participated in steam reforming to generate aldehyde groups. Compared to catalytic pyrolysis, catalytic steam reforming reduced carbon atoms deposited inside the palladium lattice and improved the heat sink. Furthermore, the proportion of steam reforming increased with more H2O and the contribution of H atoms indicated the variation in the proportion of steam reforming.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Review
Chemistry, Physical
Junde Wei, Jieyi Liu, Weihao Zeng, Zichen Dong, Jingkuo Song, Sibao Liu, Guozhu Liu
Summary: Plastic waste is a significant environmental threat and economic loss. Catalytic hydroconversion processes have attracted attention for their ability to convert plastic waste into valuable products under mild reaction conditions. This review focuses on recent advances in catalytic hydroconversion processes for converting plastic waste into fuels and chemicals. The review summarizes and exemplifies the hydrocracking and hydrogenolysis of polyolefins, as well as the hydrogenolysis and hydrodeoxygenation of heteroatom-containing plastics. The review also highlights progress in catalyst design, reaction mechanisms, and the impact of key factors on catalytic performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Siying Liu, Yajie Tian, Xinyu He, Yong Liu, Congzhen Qiao, Guozhu Liu
Summary: A dual-template method was used to prepare hierarchical ZSM-5 zeolite for catalytic cracking of n-pentane. The synthesized zeolite had adjustable proportions of micropores to mesopores by regulating the content of tetrapropylammonium hydroxide and tetrabutylphosphonium hydroxide. The prepared catalyst exhibited high yield of light olefins and excellent catalytic stability.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
Ting Wang, Sibao Liu, Li Wang, Guozhu Liu
Summary: Catalytic steam reforming of toluene was investigated using Rh/CeO2 catalysts prepared by different methods. The Rh/CeO2(LDP-1) catalyst prepared by L-lysine assisted deposition precipitation method exhibited excellent catalytic activity, stability, and resistance to carbon deposition. The superior performance was attributed to the enhanced Rh dispersion, surface Rh0 content, and concentration of surface oxygen vacancy. A dual-site functional catalyst mechanism involving the -CHO group as a key intermediate for gas products generation was proposed. This study highlights the advantages of L-lysine-assisted deposition precipitation method for preparing highly active and stable metal-based catalysts for steam reforming reactions.
Article
Engineering, Chemical
Mingxia Song, Bofeng Zhang, Ziwei Zhai, Sibao Liu, Li Wang, Guozhu Liu
Summary: Atomically dispersed metal catalysts can maximize metal utilization and provide unique chemical properties. Self-pillared nanosheet-supported metal catalysts, such as PtZn/SP-S-1, exhibit high stability and specific activity, with no obvious deactivation after 90 hours at high temperature. They have potential to guide high-temperature catalysis.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Yutong Wang, Guozhu Liu
Summary: This study investigated the mechanism of Pd-Pt alloy catalyst in the dehydrogenation of PHAN using density functional theory. The results showed that PdPt-(111) catalyst had advantages in PHAN dehydrogenation due to lower energy barrier and more stable dehydrogenation products. In addition, a method for selecting the minimum active unit of PdPt catalyst was proposed, and a correlation model among Pd-Pt surface characteristics, catalytic activity, and adsorption energy was established.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ziwei Zhai, Bofeng Zhang, Yutong Wang, Li Wang, Sibao Liu, Guozhu Liu
Summary: The vacancies and oxygen-containing groups in nanocarbons can enhance the catalytic performance of supported Pt clusters in propane dehydrogenation. In this study, nanocarbons with coexisting vacancies and oxygen-containing groups were designed and their influences on PDH were investigated by density functional theory calculations. Nanocarbons with divacancies and C=O edge groups were found to be the most suitable support for Pt clusters in PDH, resulting in enhanced binding strength and improved stabilization of Pt clusters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yutong Wang, Guozhu Liu
Summary: This study provides an atomic-level understanding of the effects of inhomogeneity on reactions in supercritical fluids, using the example of n-decane pyrolysis. The researchers explain the inhomogeneity as the coexistence of gas-like and liquid-like atoms and show that the presence of liquid-like atoms significantly increases the type and frequency of bimolecular reactions, leading to changes in product distributions.
Article
Energy & Fuels
Song Xia, Yulin Zhu, Yajie Tian, Xinyu He, Longhui Guo, Congzhen Qiao, Guozhu Liu
Summary: Fe-Al isomorphous and self-pillared ZSM-5 nanosheets zeolite (Al-Fe-SPZ) with different Fe/Al molar ratios were synthesized by one-pot strategy for catalytic cracking of n-heptane to produce light olefins. Adding Fe into zeolite framework reduced surface acid concentrations and affected the olefins selectivity in catalytic cracking reactions.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
