Article
Materials Science, Multidisciplinary
Israel Osmond, Owen Moulding, Sam Cross, Takaki Muramatsu, Annabelle Brooks, Oliver Lord, Timofey Fedotenko, Jonathan Buhot, Sven Friedemann
Summary: This study presents detailed investigations on the superconductivity in high-pressure H3S. It is found that H3S exhibits superconductivity with a transition temperature of 197 K, demonstrating clean-limit behavior. Additionally, the resistive transition of H3S broadens significantly in finite magnetic field, and the resistance shows a linear temperature-over-field scaling at the superconducting transition, which is not consistent with existing theories.
Article
Chemistry, Applied
Farshad Gholizadeh, Ali Izadbakhsh, Jiankun Huang, Yan Zi-Feng
Summary: A series of Ni-based catalysts supported on cubic ordered mesoporous alumina (COMA) were synthesized and tested in dry reforming of methane reaction. The 15%NiO/COMA catalyst showed the best catalytic performance, with stability test results proving no activity loss after 210 hours, demonstrating excellent catalytic stability of the COMA structure in DRM reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Physics, Applied
Digvijay Nath Dubey, Gurvinderjit Singh, Saurabh Tripathi
Summary: The development of a lead-free perovskite system, exhibiting relaxor ferroelectric behavior, has been studied in this research. The presence of a high dielectric constant and relaxor ferroelectric properties in these ceramics, along with the crucial role of Ca2+ dopant, have been observed through experiments and measurements.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Energy & Fuels
Tshepo D. Dipheko, Vladimir V. Maximov, Mohamed E. Osman, Evgeny A. Permyakov, Alexander Mozhaev, Pavel A. Nikulshin, Alexander G. Cherednichenko, Victor M. Kogan
Summary: The effect of different supports on trimetallic KCoMoS2 catalysts for ethanol conversion was studied. Results showed that catalysts supported on various activated carbons were more active than those supported on alumina and carbon-coated alumina. The length and dispersion of the catalysts also influenced the turnover frequency. The acidity of the catalysts had an impact on product yields.
Article
Chemistry, Physical
Krishna R. Iyer, Aditya Bhan
Summary: Ethylene epoxidation on promoted Ag/α-Al2O3 catalysts shows high ethylene oxide selectivity, with complex interdependencies among ethylene oxidation, chlorine deposition and removal, and EO degradation catalytic cycles. The impact of organochloride promoters on EO synthesis kinetics is illustrated by systematic variations in ethylene and oxygen reaction orders. EO degradation rates, while not influenced by the chlorine promoter, can significantly reduce net EO selectivity.
Article
Chemistry, Multidisciplinary
Ankit Agrawal, Neha Bansal, Himanshu Raghav, Arijit Jana, Reena Goyal, Debashish Ghosh, Thallada Bhaskar, Bipul Sarkar
Summary: The increasing demand for sustainable energy and chemicals, along with the declining fossil fuel reserves, has led to the search for alternative feedstocks and processes. Short-chain olefins are important for the polyolefin industry and require an alternative process to meet future demands. This study demonstrates that single-cell oil (SCO) derived from the oleaginous yeast Rhodotorula mucilaginosa IIPL32 could be used as a renewable feedstock for olefin production. A PtSn/alumina catalyst showed high selectivity to C2-C4 olefins, which can be attributed to the selective catalytic cracking of long-chain lipid molecules over nanosized PtSn/alumina and the synergy between surface acidic sites and reducible Pt species.
Article
Chemistry, Physical
Su Yang, Xiaoxuan Guo, Xiaomei Pan, Liuyu Gu, Xueping Liu, Lijing Gao, Guomin Xiao
Summary: This study introduces a method for preparing bromopropane from n-propanol using a reactive distillation strategy and Al2O3/SO42-/ZrO2 as a catalyst. The yield of bromopropane can reach 96.18% under optimal conditions without side reactions.
Article
Materials Science, Multidisciplinary
Myat Thiri San, Pensiri Prachakittikul, Kanjanaphon Chainarong, Tanaporn Sripisarn, Konrat Kerdnawee, Komkrit Suttiponparnit, Tawatchai Charinpanitkul, Wanida Koo-Amornpattana, Atthapon Srifa, Sakhon Ratchahat, Weerawut Chaiwat
Summary: In this study, liquid aromatic hydrocarbons were used as carbon sources to produce carbon nanotubes (CNTs) via catalytic chemical vapor deposition method. Fe/Al2O3 catalysts resulted in significantly higher carbon yields with higher graphitization compared to Ni/Al2O3 catalysts. The size of CNTs produced from Ni/Al2O3 was smaller than those from Fe/Al2O3 due to smaller crystallite size. Increasing the temperature and carbon atoms of aromatic hydrocarbons improved the CNT yields without changing the quality. Optimum reaction time for CNT synthesis with Fe/Al2O3 catalyst was achieved at 30 minutes.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Zahra Taherian, Vahid Shahed Gharahshiran, Fatemeh Fazlikhani, Mardali Yousefpour
Summary: In this study, the addition of samarium to Ni catalyst through impregnation method successfully decreased the average Ni crystallite size and specific surface area, resulting in improved catalytic activity, enhancing the methane dry reforming process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Chen Lyu, Junjie Zhang, Filippo Boi, Huanqing Ye
Summary: This study demonstrates the generation of -2 μm optical emission through the incorporation of holmium(III) ions with an organic ligand, characterized by steady and time-resolved photoluminescence. By calculating the Fo'rster energy transfer rate and modeling the excited state dynamics, an efficient sensitization scheme is proposed. The presented work suggests a promising material candidate for fabricating thin films with 2 μm emission.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Jianlin Yang, Lu Zhao, Tianran Zhou, Shuhua Ma, Xiaohui Wang
Summary: In this study, mullite whiskers on a micro-scale spherical aggregate support were obtained from high-alumina coal fly ash using an acid-alkali combined extraction method. The mullite-supported amorphous manganese oxide (MSAMO) catalyst, with a hierarchical porous structure, exhibits high catalytic performance for the oxidation of NO. This study provides insights into the effectiveness of catalytic NO removal in practical industrial coal-fired boiler flue gas.
Article
Chemistry, Multidisciplinary
Dexin Zhang, Kang Li, Junli Chen, Changyu Sun, Zhi Li, Jie Lei, Qinlan Ma, Pan Zhang, Yong Liu, Lin Yang
Summary: Hierarchical ZSM-35 materials with superior catalytic activity and stability were prepared through post-treatment with NH4F etching. Moderate treatment conditions retained the intrinsic structure and acidity of zeolites, leading to better catalytic performance and stability, while severe etching disrupted the crystalline framework and decreased catalytic performance.
Article
Agricultural Engineering
Qingfeng Liu, Yunfei Bai, Hong Chen, Mengmeng Chen, Yushuai Sang, Kai Wu, Zewei Ma, Yiming Ma, Yongdan Li
Summary: The efficient depolymerization and hydrodeoxygenation of enzymatic hydrolysis lignin were achieved using a gamma-alumina supported nickel molybdenum alloy catalyst in a single step. The reaction atmosphere and temperature significantly affected the conversion, product type, and distribution of the lignin. Among various catalysts tested, the gamma-alumina supported nickel molybdenum alloy catalyst showed the highest activity.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Xiaohua Chen, Jia Lin, Yong Zheng, Yingying Zhan, Wen Zhang, Yihong Xiao, Ying Zheng, Lilong Jiang
Summary: The addition of MOx as a second promoter positively influences the performance of Pd/γ-Al2O3 catalyst, enhancing its reducing capability and providing richer palladium step sites. Additionally, the MOx dopant increases surface oxygen species, inhibits the accumulation of OH/H2O, and improves both activity and moisture-tolerance of the catalyst.
Article
Chemistry, Physical
Aleksey N. Chernov, Svetlana V. Cherepanova, Evgeny Yu. Gerasimov, Igor P. Prosvirin, Galina A. Zenkovets, Alexei A. Shutilov, Anna S. Gorbunova, Konstantin Yu. Koltunov, Vladimir I. Sobolev
Summary: Non-oxidative propane dehydrogenation (PDH) is an important method for propylene production. Recent studies have shown that cobalt-containing catalysts have great potential in this process and can achieve efficiencies comparable to platinum- and chromium-based catalytic systems. This study investigated the active sites of cobalt aluminates (CoAl2O4-Al2O3) responsible for PDH and found that cobalt oxide forms tightly covering alumina or embedded in the spinel structure are the most likely catalytic sites for this reaction. Further research is needed to understand the role of surface oxygen vacancies in enhancing the catalytic activity.
Article
Chemistry, Analytical
Debrina Jana, Emily Lehnhoff, Ian Bruzas, Jendai Robinson, William Lum, Laura Sagle
Article
Chemistry, Physical
Debrina Jana, Zohre Gorunmez, Jie He, Ian Bruzas, Thomas Beck, Laura Sagle
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Multidisciplinary
Anuradha Mitra, Promita Howli, Dipayan Sen, Biswajit Das, Kalyan Kumar Chattopadhyay
Article
Chemistry, Multidisciplinary
Antika Das, Subhajit Saha, Karamjyoti Panigrahi, Anuradha Mitra, Rituparna Chatterjee, Uttam Kumar Ghorai, Biswajit Das, Kalyan Kumar Chattopadhyay
Article
Chemistry, Multidisciplinary
Debrina Jana, Goutam De
CRYSTAL GROWTH & DESIGN
(2019)
Article
Chemistry, Physical
Dipayan Sen, Bikram Kumar Das, Subhajit Saha, Rajarshi Roy, Anuradha Mitra, Kalyan Kumar Chattopadhyay
Article
Chemistry, Physical
Promita Howli, Karamjyoti Panigrahi, Anuradha Mitra, Nirmalya Sankar Das, Kalyan Kumar Chattopadhyay
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Ratna Sarkar, Dimitra Das, Bikram Kumar Das, Anuradha Mitra, Nirmalya S. Das, Subrata Sarkar, Kalyan K. Chattopadhyay
MATERIALS RESEARCH BULLETIN
(2020)
Article
Chemistry, Physical
Samita Mishra, Daimiota Takhellambam, Arijit K. De, Debrina Jana
Summary: Among all inorganic lead halide perovskites, CsPbI3 has emerged as a competent photovoltaic material with enhanced stability in the presence of surface capping agent PVP. The study successfully synthesized a stable CsPbI3-alumina composite film with limited phase instability and efficient charge transfer kinetics. This research presents new possibilities for utilizing surface capping agents and mesostructured layers to confine stable active perovskite nanocrystals for practical photovoltaic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
P. P. Ashitha, Mayank Joshi, Deepraj Verma, Sachin Jadhav, Angshuman Roy Choudhury, Debrina Jana
Summary: This study successfully synthesized Cs4CuSb2Cl12 nanocrystals with a direct band gap using a bottom-up synthetic approach. The nanocrystals exhibit strong absorption across the visible region, making them promising for photocatalysis and photovoltaic applications. The results are significant for extending the synthetic protocol to other 2D-layered perovskite nanocrystals and understanding the quantum confinement effect on their properties.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Isabella K. J. Antony, Debrina Jana
ACS APPLIED NANO MATERIALS
(2020)
Proceedings Paper
Materials Science, Multidisciplinary
Ratna Sarkar, Dimitra Das, Anuradha Mitra, Subrata Sarkar, Kalyan Kumar Chattopadhyay
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Chemistry, Multidisciplinary
Daimiota Takhellambam, Tinku Ram Meena, Debrina Jana
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Debrina Jana, Adarsh B. Vasista, Harshvardhan Jog, Ravi P. N. Tripathi, Monica Allen, Jeffery Allen, G. V. Pavan Kumar
Article
Chemistry, Multidisciplinary
Dimitra Das, Anuradha Mitra, Rituparna Chatterjee, Sumanta Sain, Kalyan Kumar Chattopadhyay
NEW JOURNAL OF CHEMISTRY
(2019)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
