Article
Chemistry, Physical
Xueya Dai, Tianlong Cao, Xingyu Lu, Yunli Bai, Wei Qi
Summary: A dual-path dehydrogenation route was developed to convert ethylbenzene to styrene efficiently using a Pd/hollow nanocarbon spheres catalyst. The catalyst exhibited high activity and selectivity, providing a rational design strategy for efficient alkane dehydrogenation reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
He Sun, Juping Zhang, Kongzhai Li, Hua Wang, Xing Zhu
Summary: An ODH process using a CO2-O2 mixture atmosphere was proposed for the efficient conversion of ethylbenzene into styrene with high ethylbenzene conversion and styrene selectivity. Under optimized conditions, the catalyst achieved 90.8% ethylbenzene conversion and 97.5% styrene selectivity. CO2 induced oxygen vacancies in ceria and promoted oxygen exchange between gaseous oxygen and ceria. The proposed ODH strategy using oxygen vacancies enriched catalysts offers an important insight into the efficient dehydrogenation of ethylbenzene at mild conditions.
Article
Chemistry, Multidisciplinary
Renyi Wang, Juping Zhang, Dongfang Li, Kongzhai Li, Hua Wang, Xing Zhu
Summary: In this study, a novel perovskite-structured metal oxide catalyst was synthesized for the oxidative dehydrogenation of ethylbenzene into styrene. The optimized catalyst showed efficient conversion of ethylbenzene into styrene, demonstrating great potential for energy conservation and process intensification.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Jian Sheng, Wen-Cui Li, Wen-Duo Lu, Bing Yan, Bin Qiu, Xin-Qian Gao, Rui-Ping Zhang, Shu-Zhen Zhou, An-Hui Lu
Summary: In this study, a boron nitride-supported FeOx catalyst was developed for the highly selective and productive synthesis of styrene. The interaction between FeOx clusters and BOx species derived from the BN support was found to mitigate the overoxidation reactions, leading to stable catalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Fangliang Li, Xiao Chen, Yuemiao Lai, Tao Wang, Xueming Yang, Qing Guo
Summary: In this study, the photocatalytic dehydrogenation of ethylbenzene into styrene on R-TiO2(110) was investigated using the temperature-programmed desorption method. The results showed that the reaction proceeded stepwise, with the initial alpha-C-H bond cleavage occurring under UV irradiation and the second C-H bond cleavage induced by either photocatalysis or thermocatalysis. The addition of oxygen atoms and excess electrons on the surface greatly enhanced the yield of styrene.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Yuemiao Lai, Zhengtian Pu, Peng Liu, Fangliang Li, Jie Zeng, Xueming Yang, Qing Guo
Summary: The low-temperature C-H bond activation of alkanes is a challenging process in alkane dehydrogenation. This study investigates the oxidative dehydrogenation of ethylbenzene on rutile(R)-TiO2(110) under ultrahighvacuum (UHV) and ambient conditions. The results suggest that the initial step of EB oxidative dehydrogenation differs under UHV and ambient conditions, leading to different product distributions. The findings provide new insights into the fundamental understanding of low-temperature C-H bond activation and can contribute to the development of efficient catalysts for styrene production.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Baining Lin, Yuwei Liu, Yaping Li, Fan Xu, Yingping Zou, Yonghua Zhou
Summary: The direct dehydrogenation of ethylbenzene to styrene catalyzed by PBN@Al2O3(N) is reported as a highly stable process with excellent conversion and selectivity. The catalyst utilizes a combination of active sites on thin PBN layers and boron-modified alumina surface to enhance the strength and amount of moderate acidic and basic sites, resulting in improved mass transfer and stability. The easy accessibility of commercial alumina and simple synthesis technique make this catalyst a promising candidate for large-scale industrial applications.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Rahul Gupta, Hasan Uslu, Subhajit Majumder
Summary: A pseudo-homogeneous model based on intrinsic rate equations is developed to study the dehydrogenation of ethylbenzene to styrene. The model considers factors such as temperature, pressure, steam to ethylbenzene ratio, and styrene to ethylbenzene ratio in feed, and evaluates their effects on styrene selectivity and conversion rates.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Dahai Pan, Yu Ru, Tonglian Liu, Yongjie Wang, Feng Yu, Shuwei Chen, Xiaoliang Yan, Binbin Fan, Ruifeng Li
Summary: Ordered mesoporous Ti-Al composite oxides (OMTA-x) with variable Al/Ti atomic ratios were prepared and evaluated as catalysts for oxidative dehydrogenation of ethylbenzene to styrene with CO2. The OMTA-x catalysts exhibited significantly improved catalytic performance compared to Al2O3-supported titania catalyst.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhiying Liu, Yulin Li, Xiaohui Sun, Zhuyin Sui, Xiufeng Xu
Summary: This study explored the feasibility of coupling N2O decomposition with ethylbenzene oxidative dehydrogenation and found that the K/Co2AlO4 catalyst could achieve complete N2O decomposition with improved EB conversion and styrene selectivity. The modified catalysts showed enhanced performance due to improved reducibility, reduced acid properties, and electron transfer from K cation to Co species.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Ning Zhang, Yuqi Zhang, Xin Li, Rixin You, Wei Guo, Minghui Liang
Summary: Clearing the catalytic activity centers is crucial for developing metal-free catalysts and understanding their reactions. In the case of oxidative dehydrogenation of ethylbenzene to styrene, both single ketone and diketone groups can act as active centers, with the diketone-based catalyst showing higher activity. The transfer of hydrogen from ethylbenzene to ketone groups is likely a key step in the reaction.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Lohit Sharma, Xiao Jiang, Zili Wu, Andrew DeLaRiva, Abhaya K. Datye, John Baltrus, Srinivas Rangarajan, Jonas Baltrusaitis
Summary: A stable and highly selective tin-modified alumina catalyst has been developed for propane dehydrogenation in the presence of sulfur-containing gas streams, exhibiting over 98% selectivity and high conversion rates. The active sites are identified as defect tricoordinated Al atoms, which can be further modified through H2S pretreatment to enhance activity and selectivity.
Article
Engineering, Environmental
Xiaohui Sun, Zhiying Liu, Yulin Li, Kezhi Tang, Jian Wang, Zhuyin Sui, Xiufeng Xu
Summary: Mesoporous Cr-mAl2O3 and Ce-Cr-mAl2O3 catalysts were prepared via a one-pot hydrothermal process for N2O-assisted ethylbenzene selective oxidation to styrene. The Cr-doped catalysts, particularly 7Cr-mAl2O3, exhibited superior catalytic performance, and the addition of Ce further increased the styrene yield to 54%. In-situ DRIFTS characterization revealed the favorable reducibility of the catalyst, the role of Ce-Cr species in reducing the stability of carbon deposition, and the possible reaction pathway involving N2O and ethylbenzene.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Jiashun Wang, Linlin Wang, Jiangyong Diao, Xi Xie, Guoming Lin, Qing Jia, Hongyang Liu, Guoxin Sui
Summary: In this study, 3D SiC@C hybrid materials with core-shell structure were synthesized using a novel method and utilized as catalysts for direct dehydrogenation reactions, showing excellent activity and high yield rate. The research results suggest that this material has promising applications in catalytic dehydrogenation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Freek Kapteijn, Jacob A. Moulijn
Summary: This perspective paper provides a brief overview of the past developments in structured catalysts and reactors, highlighting the potential for process intensification, energy and materials efficiency. It also discusses current exciting new developments for demanding processes and suggests directions that contribute to a future sustainable chemical industry.
Review
Engineering, Chemical
Freek Kapteijn, Xuerui Wang
Summary: Zeolite membranes are important in energy efficient and selective separation technologies due to their selective adsorption, diffusion, and molecular sieving. The support plays a significant role in the membrane performance, as the transport mechanisms in the zeolite layer and support can counteract each other regarding selectivity and the support may also affect the flux. The configuration of zeolite membrane modules should take into consideration factors such as layer thickness, orientation, and operational conditions.
CHEMIE INGENIEUR TECHNIK
(2022)
Correction
Materials Science, Multidisciplinary
Zheng Zhang, Diana L. Santangelo, Gert ten Brink, Bart J. Kooi, Jacob A. Moulijn, Ignacio Melian-Cabrera
Article
Chemistry, Physical
Chuncheng Liu, Evgeny A. Uslamin, Elena Khramenkova, Enrico Sireci, Lucas T. L. J. Ouwehand, Swapna Ganapathy, Freek Kapteijn, Evgeny A. Pidko
Summary: The addition of minute amounts of Ca can stabilize the catalyst and extend its lifetime. The interaction between Ca and Ga-LAS has an effect on the aromatization process.
Article
Engineering, Chemical
Ignacio Melian-Cabrera, Teresita Marzialetti, M. Fernanda Neira D'Angelo, Cristian H. Campos, Patricio Reyes
Summary: This study proposes a simplified kinetic model for the hydrogenation of 1-phenyl-1,2-propanedione, which can accurately predict concentration profiles despite the complexity of the reaction and catalyst system. The model suggests that the process can be formally treated as a first-order irreversible homogeneous catalyzed reaction.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Ignacio Melian-Cabrera, Valeriya Zarubina
Summary: This study demonstrates the correlation between conversion and selectivity in the catalytic dehydrogenation of ethylbenzene. A quantitative model is developed to explain the changes in conversion related to selectivity. The study provides evidence for the demanding conditions required for achieving high conversion rates in this reaction.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Juan J. Mercadal, Dmitrii Osadchii, Valeriya Zarubina, Maria Jose Valero-Romero, Ignacio Melian-Cabrera
Summary: This study demonstrates that the in situ thermal reactivation of multi-walled carbon-nanostructure (MWCNT) can improve performance in oxidative dehydrogenation reactions, resulting in a more selective production of styrene and less COx. The reactivated catalyst showed enhanced properties due to changes in surface groups.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
M. J. Valero-Romero, F. J. Garcia-Mateos, Freek Kapteijn, J. Rodriguez-Mirasol, T. Cordero
Summary: Cobalt-containing lignin-based fibers were synthesized for low-temperature Fischer-Tropsch synthesis. The fibers heat-treated at 500℃ showed the best catalytic performance with selectivity of 75% and 60%.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Juan J. Mercadal, Alvaro Mayoral, Jose Luis G. Fierrod, Enrique Garcia-Bordeje, Ignacio Melian-Cabrera
Summary: By purifying the raw SWCNT in one step, lowering the MeOx concentration and generating surface C=O groups, the catalytic performance of SWCNT in the oxidative dehydrogenation of ethylbenzene was significantly improved. The textural improvement and MeOx removal contributed to the enhancement of EB conversion, ST selectivity, and reduction of COx selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Correction
Chemistry, Physical
Juan J. Mercadal, Dmitrii Osadchii, Valeriya Zarubina, Maria Jose Valero-Romero, Ignacio Melian-Cabrera
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Applied
Ignacio Melian-Cabrera, Valeriya Zarubina
Summary: The surface area of porous materials is commonly used in catalysis and adsorption. The Brunauer-Emmett-Teller (BET) model is often applied, but volume can be a more appropriate parameter when considering reactor and adsorption column design. This study introduces the concept of volumetric surface area and highlights the importance of considering bulk density when comparing surface areas for materials where volume is critical.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Chuncheng Liu, Evgeny A. Uslamin, Evgeny A. Pidko, Freek Kapteijn
Summary: This study investigates the methanol-to-hydrocarbons (MTH) process over the H-ZSM-5 catalyst at 400 degrees C, revealing the dynamic mechanistic details. Experimental results show that methanol is quickly consumed in the initial reaction zone, followed by the formation of light aromatics through HCP decomposition and olefin alkylation-dealkylation. Isotopic analysis confirms the olefin-based cycle as the kinetically preferred pathway, with the paring reaction pathway through aromatic ring contraction and re-expansion steps being operative.
Review
Chemistry, Multidisciplinary
Bo Zhang, Zerui Zhu, Xuerui Wang, Xinlei Liu, Freek Kapteijn
Summary: Metal-organic frameworks (MOFs) are highly effective sorbents for water-based applications, offering unique water isotherms and easy loading and regeneration. They are superior to classical sorbents in humidity control, water harvesting, and adsorption-based heating and cooling, with good hydrothermal stability and cyclic durability. Selection criteria and potential applications are discussed, highlighting the need for further optimization and scale-up. Retrofitting existing applications with MOFs shows promise, and techno-economic and life cycle analyses are necessary for evaluating feasibility.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xiaozhou Ma, Jelco Albertsma, Dieke Gabriels, Rens Horst, Sevgi Polat, Casper Snoeks, Freek Kapteijn, Huseyin Burak Eral, David A. A. Vermaas, Bastian Mei, Sissi de Beer, Monique Ann van der Veen
Summary: Large amounts of carbon monoxide are produced through industrial processes, but separating carbon monoxide from other gases is challenging due to their similar physical properties. However, carbon monoxide is valuable in the production of chemicals and hydrocarbons, making the development of efficient CO separation processes important for both industry and the environment.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Applied
Chuncheng Liu, Evgeny A. Uslamin, Sophie H. van Vreeswijk, Irina Yarulina, Swapna Ganapathy, Bert M. Weckhuysen, Freek Kapteijn, Evgeny A. Pidko
Summary: Identification of catalyst characteristics correlating with key performance parameters is crucial for rational catalyst design. This study focused on the methanol-to-olefin process and identified that enrichment of lattice Al sites in the channels of the pentasil structure is associated with high propylene and butylenes production as well as large MeOH conversion capacity. Other catalyst characteristics, such as crystal size and presence of external Bronsted acid sites, were found to have less pronounced role in defining propylene selectivity. Catalyst deactivation was found to be complex and strongly influenced by the enrichment of lattice Al in the intersections, overall Al-content, and crystal size. The intergrowth of MFI and MEL phases accelerated catalyst deactivation rate.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
