Article
Materials Science, Multidisciplinary
Yongfeng Li, Jiaojiao Su, Feng Yu, Xiaoliang Yan, Dahai Pan, Ruifeng Li, Yongxing Yang
Summary: The Co-containing catalysts supported on super-microporous Al2O3-ZrO2 with different Al/Zr molar ratios showed that the catalytic performance was highly influenced by the textural and chemical properties. Among them, the 2.5Co/AZ(0.7) catalyst with intermediate acidity, high surface area, and high metal dispersion exhibited the best performance in the dehydrogenation of ethylbenzene with CO2.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Chemical
Guowei Wang, Ning Tang, Ze Li, Xiaolin Zhu, Huanling Zhang, Shan Zhang, Honghong Shan
Summary: The Fe2O3 promoted TiO2-ZrO2 catalyst showed excellent dehydrogenation performance without the need for excessive superheated steam, which can reduce operation costs and improve stability. Additionally, a conceptual fluidized-bed ethylbenzene dehydrogenation process was proposed to achieve continuous reaction-regeneration operation, demonstrating a potential for reducing costs and achieving self-heat balance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Yuemiao Lai, Yi Zeng, Fangliang Li, Xiao Chen, Tao Wang, Xueming Yang, Qing Guo
Summary: Photocatalytic ethylbenzene conversion into styrene has been achieved by one hole on rutile (R)-TiO2(100) at 80 K under 257 and 343 nm irradiation. The rate of β-C-H bond cleavage is strongly dependent on hole energy, leading to a much higher yield of styrene formation at 257 nm. This result advances our understanding of low-temperature C-H bond activation and suggests the need for a more sophisticated photocatalysis model.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
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, 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
Energy & Fuels
Zhendong Wang, Guozhu Liu, Xiangwen Zhang
Summary: In this study, a high active and stable CaO-modified Pt catalyst was developed for the dehydrogenation of cycloalkanes under supercritical conditions. The addition of an appropriate amount of CaO improved the durability of the catalyst, while excessive CaO resulted in poor catalytic activity and stability. The characterization analyses revealed that CaO facilitated the formation of oxygen vacancy defects, increasing the electron density and promoting encapsulation of Pt particles. Furthermore, CaO reduced the acid amount and weakened the acid sites, inhibiting catalyst deactivation by mitigating coke formation.
Article
Materials Science, Multidisciplinary
Svetlana A. Kuznetsova, Olga S. Khalipova, Konstantin V. Lisitsa, Liliya A. Selunina, Victor V. Khasanov, Alexandra G. Malchik, Yu-Wen Chen
Summary: Hierarchical MoO3/TiO2-SiO2 layered spherical composites were synthesized on anion exchanger template, and their properties and photocatalytic performance were characterized. The formation of TiO2-SiO2 shell on the MoO3 core led to lower oxygen vacancy concentrations and reduced bandgap width. The MoO3/TiO2-SiO2 composites showed higher photocatalytic activity.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Zhiying Liu, Yulin Li, Xiaohui Sun, Zhuyin Sui, Xiufeng Xu
Summary: In this study, CeO2-Co3O4 binary oxide catalysts supported on carbon nanotubes (CNTs) were synthesized and evaluated for the oxidative dehydrogenation of ethylbenzene with N2O. The best catalyst, 0.10Ce-20wt%Co/CNTs, exhibited high catalytic activity and selectivity, which can be attributed to the strong interaction between Co and Ce species on CNTs surface, good reducibility, and suitable acidity.
Article
Chemistry, Physical
Zhiping Zhao, Zhixia Wang, Yanbing Tong, Jinru Sun, Ming Ke, Weiyu Song
Summary: The search for inexpensive, environmentally friendly, and highly effective catalysts to activate C-H bonds in propane dehydrogenation (PDH) reactions is a major challenge. Co-based catalysts have gained attention due to their ability to activate C-H bonds and their selectivity towards olefins. However, improvements are necessary for practical utilization, specifically in terms of activity and anti-carbon deposition capacity.
Article
Chemistry, Physical
The Ky Vo, Duong Tuan Quang, Jinsoo Kim
Summary: This study successfully prepared γ-Al2O3 microspheres incorporating high levels of Mo catalyst using ultrasonic-assisted spray pyrolysis. The microspheres were then decorated with a hydrophobic TiO2 layer, forming core-shell-structured catalysts. The prepared catalysts exhibited excellent catalytic activity and stability.
CATALYSIS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Muhammad Numan, Eunji Eom, Ang Li, Michal Mazur, Hwa Woong Cha, Hyung Chul Ham, Changbum Jo, Sang-Eon Park
Summary: Catalytic oxidation of ethane using CO2 as a soft oxidant enables the production of value-added ethylene. Supported Pt5Ce intermetallic catalysts exhibit high stability and selectivity for ethylene production, with reduced affinity for ethylene compared to monometallic Pt catalysts, thereby decreasing the likelihood of coke formation on the active Pt surface.
Article
Energy & Fuels
Prathap Challa, Siva Sankar Enumula, Gidyonu Paleti, Mallesh Dosali, David Raju Burri, Seetha Rama Rao Kamaraju
Summary: This study aims to produce decanal from the dehydrogenation of 1-decanol with CO2 over copper catalysts. Cu/MgO catalyst showed high activity due to the presence of basic sites and dispersion of Cu metal particles. Copper catalysts are known to be active for both dehydrogenation and reverse water gas shift reactions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Anindya Ghosh, Aniruddha Singha, Rupak Chatterjee, Thomas E. Mueller, Asim Bhaumik, Biswajit Chowdhury
Summary: Distinctly shaping carbon materials together with doping is an excellent approach for tailoring advanced materials. In this study, a series of heteroatom (N, S, P)-doped Fe-carbon sphere catalysts were prepared to explore the effect of unary and binary dopants on the CO2-mediated ethyl benzene oxidative dehydrogenation. It was shown that each type of heteroatom has a beneficial role in creating specific chemical entities as well as in defining the iron amount of the catalyst. The N-doped hierarchical Fe-hollow sphere carbon (Fe-N-C) catalyst shows the highest catalytic performance among all synthesized catalysts due to the cooperative action of pyridinic N species and the Fe3C phase for CO2 activation as well as RWGS reaction promotion.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Thomas Len, Mounib Bahri, Ovidiu Ersen, Yaya Lefkir, Luis Cardenas, Ignacio J. Villar-Garcia, Virginia Perez Dieste, Jordi Llorca, Noemie Perret, Ruben Checa, Eric Puzenat, Pavel Afanasiev, Franck Morfin, Laurent Piccolo
Summary: In Mo/TiO2 catalysts, the interaction between ultradispersed molybdate species and the support structure of rutile titanium nanorods plays a crucial role in achieving high activity and selectivity for methanol production.
Article
Chemistry, Physical
Venkata Ramesh Babu Gurram, Siva Sankar Enumula, Kumara Swamy Koppadi, Raji Reddy Chada, David Raju Burri, Seetha Rama Rao Kamaraju
CATALYSIS COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Venkata Ramesh Babu Gurram, Murali Kondeboina, Siva Sankar Enumula, Naveen Gajula, David Raju Burri, Seetha Rama Rao Kamaraju
ARABIAN JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Physical
Divya Prasad, Komal N. Patil, C. R. Chaitra, N. Sandhya, Jayesh T. Bhanushali, Suresh W. Gosavi, Arvind H. Jadhav, Bhari Mallanna Nagaraja
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
Divya Prasad, Komal N. Patil, N. Sandhya, C. R. Chaitra, Jayesh T. Bhanushali, Akshaya K. Samal, Rangappa S. Keri, Arvind H. Jadhav, Bhari Mallanna Nagaraja
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
Komal N. Patil, Divya Prasad, Jayesh T. Bhanushali, Hern Kim, Amol B. Atar, Bhari Mallanna Nagaraja, Arvind H. Jadhav
Article
Chemistry, Physical
Jayesh T. Bhanushali, Divya Prasad, Komal N. Patil, K. Saidulu Reddy, Kamaraju Seetha Rama Rao, Arvind H. Jadhav, Bhari Mallanna Nagaraja
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
Jayesh T. Bhanushali, Divya Prasad, Komal N. Patil, K. Saidulu Reddy, Itika Kainthla, Kamaraju Seetha Rama Rao, Arvind H. Jadhav, Bhari Mallanna Nagaraja
CATALYSIS COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Komal N. Patil, Divya Prasad, Vilas K. Manoorkar, Jayesh T. Bhanushali, Arvind H. Jadhav, Bhari Mallanna Nagaraja
Summary: This study designs Cu/ZnAl2O4-CeO2 catalyst for the production of GBL from 1,4-butanediol. CeO2 promoter prevents catalyst agglomeration and increases its basic character to selectively obtain GBL. Under optimized process conditions, a high yield of 94% GBL product was achieved.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Iranna Udachyan, Jayesh T. Bhanushali, Amir Mizrahi, Tomer Zidki, Dan Meyerstein
Summary: This study investigated Mn2(CO3)3/NF as an electrocatalyst for the oxygen evolution reaction, showing lower overpotential and good long-term stability in both KOH and NaHCO3 media.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Iranna Udachyan, Jayesh T. Bhanushali, Shanti G. Patra, Tomer Zidki, Amir Mizrahi, Dan Meyerstein
Summary: Nickel carbonate was electrodeposited on Pt and Pd electrode surfaces and characterized using various techniques. The electrodeposited Ni-2(CO3)(3)/Pt and Ni-2(CO3)(3)/Pd showed enhanced activity for methanol oxidation in KOH and Na2CO3 electrolytes. The Ni-2(CO3)(3)/Pt catalyst exhibited the highest forward scan peak current density of 19.8 mA cm(-2).
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Iranna Udachyan, Jayesh T. Bhanushali, Amir Mizrahi, Tomer Zidki, Dan Meyerstein
Summary: Energy generation from sustainable renewable sources is crucial, and the oxidation of ammonia using Mn-2(CO3)(3)/Pd electrode as an electrocatalyst could be a potential solution. The electrocatalyst exhibits a high oxidation current density at a specific anodic potential in solutions containing Na2CO3 and NH4OH. The durability test shows the stability of Mn-2(CO3)(3) for over 4 hours, and nitrogen is the only observed product of the ammonia oxidation reaction.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Komal N. Patil, Divya Prasad, Jayesh T. Bhanushali, Bhalchandra Kakade, Arvind H. Jadhav, Bhari Mallanna Nagaraja
Summary: The development of oxygen vacancies in Pd@ZrO2 catalysts through a two-step synthesis method was studied, and it was found that the synergistic effect between oxygen vacancies and nano-sized active Pd metals played a crucial role in enhancing the selectivity for the hydrogenation of cinnamaldehyde to hydrocinnamaldehyde. The optimized reaction parameters, including 4 wt% Pd loading, 100 degrees C temperature, and 10 bar H-2 pressure, were identified to provide efficient conversion of cinnamaldehyde with high yield and excellent recyclability of the catalyst, making oxygen-vacancy-rich Pd@ZrO2 catalysts promising for industrial applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Divya Prasad, Komal N. Patil, Jayesh T. Bhanushali, Bhari Mallana Nagaraja, Arvind H. Jadhav
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Jayesh T. Bhanushali, Divya Prasad, Komal N. Patil, Gurram Venkata Ramesh Babu, Itika Kainthla, Kamaraju Seetha Rama Rao, Arvind H. Jadhav, Bhari Mallanna Nagaraja
NEW JOURNAL OF CHEMISTRY
(2019)