Article
Energy & Fuels
Sudhir Kumar Pathak, Ashish Nayyar, Varun Goel
Summary: Research shows that diesel engines can partially replace compressed natural gas to reduce NOx and smoke emissions; in dual fuel mode, the highest reduction rates for NOx and smoke can reach 21% and 18% respectively.
Review
Thermodynamics
Seyyed Hassan Hosseini, Athanasios Tsolakis, Avinash Alagumalai, Omid Mahian, Su Shiung Lam, Junting Pan, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: Hydrogen is a promising energy carrier that can be produced from renewable resources. It can be used in diesel engines with little modification and has the potential to improve performance and reduce emissions. However, there are challenges such as knocking combustion and higher nitrogen oxide emissions. This paper comprehensively reviews the effects of hydrogen on dual-fuel diesel engines and discusses opportunities and limitations. Suggestions for improving hydrogen-fueled diesel engines include reformulating pilot fuel, blending hydrogen with other fuels, adjusting engine parameters, and using exhaust gas catalysts.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Review
Chemistry, Physical
Ram Narayan Bhagat, Kunja Bihari Sahu, Surendra Kumar Ghadai, Chandra Bhushan Kumar
Summary: The global demand for cleaner and greener sources of energy is increasing, and developed countries are shifting towards non-conventional/renewable/green sources of energy. They are also trying to involve developing countries in the fight against global warming and pollution. Hydrogen, with its high calorific value, abundance, and cleaner nature, is a suitable choice as a cleaner energy source.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Zeeshan Ahmad, Ossi Kaario, Cheng Qiang, Martti Larmi
Summary: The present study addresses the challenges of utilizing methanol in diesel engines at high substitution ratios by adopting negative-valve overlap (NVO) and hot residual gases. The results show that NVO period, charge-air temperature, and MeOH lambda have significant effects on the combustion of methanol-diesel dual-fuel. The combustion in NVO mode achieved high net-indicated efficiency and low pollutant emissions.
Article
Chemistry, Physical
Jami Paparao, S. Murugan
Summary: This research investigates the engine behavior of a compression ignition engine operated in dual-fuel mode with HHO as the primary fuel. The results show that using HHO can improve the engine's thermal efficiency and diesel combustion efficiency at maximum load, while reducing exhaust gas temperature and emissions of pollutants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Amin Yousefi, Hongsheng Guo, Shouvik Dev, Brian Liko, Simon Lafrance
Summary: This study investigates the feasibility of an ammonia/diesel dual-fuel engine in reducing greenhouse gas emissions while maintaining diesel-like efficiency. Results show that increasing the ammonia energy fraction reduces nitrogen oxide emissions but increases nitrous oxide emissions, resulting in higher overall greenhouse gas emissions compared to diesel-only combustion. Advancing the start of diesel injection helps reduce nitrous oxide and overall greenhouse gas emissions while achieving diesel-like thermal efficiency.
Article
Energy & Fuels
Luis Tipanluisa, Natalia Fonseca, Jesus Casanova, Jose-Maria Lopez
Summary: This study investigates the effects of different n-butanol/diesel fuel blends on a Euro V heavy-duty diesel engine's performance and emissions. The results show that using n-butanol can improve engine performance and reduce particulate emissions in most operating conditions, while increasing CO emissions. The study also indicates that THC emissions increase with n-butanol content, while NO2 emissions decrease.
Article
Energy & Fuels
Zhijie Zhu, Xingyu Liang, Lei Cui, Kun Wang, Xiaohui Wang, Shihao Zhu
Summary: Currently, most ships still rely on fossil fuels as the main source for marine engines. However, diesel as a fuel for marine engines is no longer sufficient to meet the economic requirements of shipping and emission restrictions imposed by regulations. This research examined the viability of employing hydrogen-carrying fuel ammonia (NH3) in marine engines to develop a low-carbon combustion technology, to address the carbon emission problem of marine diesel engines.
Article
Thermodynamics
Messaoud Abdelalli Benbellil, Mohand Said Lounici, Khaled Loubar, Mohand Tazerout
Summary: This study investigates the effects of natural gas enrichment with high H2 concentrations on combustion characteristics, engine performance, exhaust emissions, and knock in a compression ignition engine. The results demonstrate that adding H2 to NG can improve the combustion process and enhance engine efficiency, but it may have limitations in reducing NOx emissions.
Article
Energy & Fuels
Zhanming Chen, Jingjing He, Hao Chen, Limin Geng, Peng Zhang
Summary: A comparative study on the effects of energy substitution ratio (ESR) on the combustion characteristics and performance of a dual fuel engine fueled with diesel/alcohols was conducted. Premixed combustion of diesel was influenced by alcohol enrichment, affecting ignition delay and combustion duration. Methanol was found to be most beneficial in prolonging ignition delay and shortening combustion duration. Energy substitution ratio also affected brake thermal efficiency (BTE) and NOx emissions differently for different alcohol types.
Article
Energy & Fuels
Zengna Wei, Yuxin Zhang, Qi Xia, Yichi Liu, Yuanli Xu
Summary: The study revealed that an increase in ESR significantly increases the in-cylinder pressure, gas temperature, and maximum pressure rise rate, while the addition of EGR decreases these parameters. Both ESR and EGR have implications on emissions, with EGR leading to lower NOx but higher soot, HC, and CO levels. The results highlight the complex interactions between ESR, EGR, combustion, and emissions in high-loaded RCCI engines.
Article
Chemistry, Physical
G. M. Pinto, T. A. Z. de Souza, R. B. R. da Costa, L. F. A. Roque, G. V. Frez, C. J. R. Coronado
Summary: This study investigates the use of hydrogen port-injection in a four-stroke single-cylinder compression ignition engine operating with renewable diesel-like fuels HVO and farnesane. The results show that hydrogen addition can reduce PM, CO, and CO2 emissions but increase NOx emissions. Moreover, both HVO and farnesane decrease pollutant emissions compared to fossil diesel in single and dual-fuel operations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Studies
Habib Gurbuz, Selim Demirturk, Ismail Hakki Akcay, Husameddin Akcay
Summary: This paper investigates the impact of ethanol addition and hot exhaust gas recirculation on engine performance, exhaust emissions, and air-pollution damage-cost in a dual-fuel diesel engine. It was found that adding 40% ethanol at 1400 rpm yielded the greatest improvement in engine performance and environmental factors.
ENERGY & ENVIRONMENT
(2021)
Review
Chemistry, Physical
Nurullah Gultekin, Murat Ciniviz
Summary: The limited supply and negative environmental impacts of fossil fuels have driven the search for alternative energy sources. The use of hydrogen as a clean energy source in internal combustion engines can reduce emissions and provide an alternative to petroleum-derived fuels. This study highlights the importance of hydrogen ratio and combustion chamber design in engine performance and emissions, suggesting a hydrogen energy ratio between 5% and 20% and considering combustion characteristics when designing the chamber. It serves as a valuable resource for researchers working on dual fuel mode in compression ignition engines.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Sarthak Nag, Atul Dhar, Arpan Gupta
Summary: This study found that EGR has different effects on combustion during hydrogen-diesel co-combustion. With an increase in EGR, the combustion process is negatively affected at low loads, while combustion variability improves at higher loads.
Article
Biochemistry & Molecular Biology
Jason C. Jones, Rahul Banerjee, Manny M. Semonis, Ke Shi, Hideki Aihara, John D. Lipscomb
Summary: The activity of soluble methane monooxygenase (sMMO) relies on the formation of a complex between the regulatory protein MMOB and the (alpha beta gamma)(2) hydroxylase alpha subunit. Mutations in MMOB can dramatically impact the rate constants for steps in the sMMOH reaction cycle, as revealed in X-ray crystal structures of sMMOH complexes with various variants of MMOB. Different variants alter the formation rate of reaction cycle intermediates and the position of key residues, ultimately affecting sMMO catalysis efficiency.
Article
Chemistry, Multidisciplinary
Shayan Karak, Kalipada Koner, Arun Karmakar, Shibani Mohata, Yusuke Nishiyama, Nghia Tuan Duong, Neethu Thomas, Thalasseril Govindankuttykaimal Ajithkumar, Munshi Sahid Hossain, Subhajit Bandyopadhyay, Subrata Kundu, Rahul Banerjee
Summary: A unique strategy is reported to design robust imidazole-linked porous organic polymers (POPs) with hollow-spherical morphologies by tandem reversible/irreversible bond formation. Solid-state NMR analysis reveals the high purity and bonding of the newly designed imidazole-based POPs. The nitrogen-rich polymeric nanostructures show excellent catalytic activity and long-term stability for the oxygen evolution reaction (OER).
ADVANCED MATERIALS
(2023)
Editorial Material
Cardiac & Cardiovascular Systems
Subhash Banerjee, Tony Das, Jerrold Grodin, Nicole Minniefield, Shirling Tsai, Rahul Banerjee, Ken Persen, Scott Novak
AMERICAN JOURNAL OF CARDIOLOGY
(2023)
Meeting Abstract
Hematology
Kevin R. Reyes, Chiung-Yu Huang, Mimi Lo, Shagun Arora, Alfred Chung, Sandy W. Wong, Jeffrey L. Wolf, Thomas Martin, Nina Shah, Rahul Banerjee
Meeting Abstract
Hematology
Jordan Ciuro, Elizabeth Henry, Nadine Housri, Rahul Banerjee, Elizabeth A. Brem, Taylor Brooks, Ben A. Derman, Brian T. Hill, Craig C. Hofmeister, Matthew A. Lunning, Matthew J. Matasar, Tycel J. Phillips, Sarah C. Rutherford, Saurabh Zanwar, Lauren E. Lee
Meeting Abstract
Hematology
Kevin R. Reyes, Yen-Chun Liu, Chiung-Yu Huang, Rahul Banerjee, Thomas Martin, Nina Shah, Sandy W. Wong, Jeffrey L. Wolf, Shagun Arora, Alfred Chung
Meeting Abstract
Hematology
Kelsey H. Natsuhara, Chiung-Yu Huang, Jennifer Knoche, Shagun Arora, Alfred Chung, Thomas Martin, Jeffrey L. Wolf, Sandy W. Wong, Nina Shah, Rahul Banerjee
Article
Chemistry, Multidisciplinary
Saikat Bag, Himadri Sekhar Sasmal, Sonu Pratap Chaudhary, Kaushik Dey, Dominic Blaette, Roman Guntermann, Yingying Zhang, Miroslav Poloz, Agnieszka Kuc, Ankita Shelke, Ratheesh K. Vijayaraghavan, Thalasseril G. Ajithkumar, Sayan Bhattacharyya, Thomas Heine, Thomas Bein, Rahul Banerjee
Summary: We successfully synthesized uniform covalent organic framework (COF) thin films using a solution-processable sphere transmutation process, which exhibited good crystallinity, porosity, and uniform thickness on a fluorine-doped tin oxide (FTO) surface. Four different COF thin films with different functional backbones were synthesized, and the TpEtBr COF film showed the lowest optical band gap and highest excited-state lifetime. All of the COF films exhibited significant photocurrent after illumination with visible light, indicating good photoactive characteristics. The out-of-plane photodetector device based on the TpEtBr COF thin film showed high photocurrent density and hole mobility, demonstrating the best photoactive properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Kalipada Koner, Suvendu Karak, Yutaro Ogaeri, Yusuke Nishiyama, Rahul Banerjee
Summary: Covalent organic nanotubes (CONTs) are porous one-dimensional frameworks connected through imine bonds via Schiff base condensation. The presence of two amine groups at the ortho position in the structurally demanding tetraaminotriptycene (TAT) building block leads to multiple reaction pathways between the ditopic aldehyde and the tetratopic amine. The synthesis and characterization of CONT-1 monomers, including the conversion of imine to imidazole bonding and the structural connectivity of CONTs, are investigated using various experimental techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Rahul Banerjee, Victoria Wang, Chiung-Yu Huang, Divita Pandita, Michelle K. K. Leonard, Siobhan LaRue, Michael Ahmadi, Lawrence Kaplan, Weiyun Z. Z. Ai, Bita Fakhri, Michael Spinner, Madhav Rao Seshadri, Miguel Hernandez Pampaloni, Charalambos Babis Andreadis
Summary: This pilot study aimed to assess the feasibility of using imaging modality in NHL patients. The results showed that a small number of patients had intratumoral hypoxia, and the only patient with hypoxia experienced early CAR-T failure. The study was stopped due to the low number of positive scans.
EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
(2023)
Article
Chemistry, Multidisciplinary
Ananda Basak, Suvendu Karak, Rahul Banerjee
Summary: In this study, highly stable beta-keto-enamine-based COFs were reported as photo catalysts for metal-free C-B bond formation reactions. Three different COFs were used and their photocatalysis performances were monitored for 12 different substrates. The COFs showed moderate-to-high yields (up to 96%) depending on the substrate's molecular functionality. TpAzo COF exhibited the highest catalytic activity due to its high crystallinity, large surface area, low band gap, and suitable band position. The light absorbance capacity of the COFs played a crucial role during catalysis, as yields were maximized near the COF's absorption maxima. The synthesized COFs showed high photostability and could be reused for multiple (>5) catalytic cycles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Ashok Kumar Mahato, Sumit Pal, Kaushik Dey, Antara Reja, Satyadip Paul, Ankita Shelke, Thalasseril G. Ajithkumar, Dibyendu Das, Rahul Banerjee
Summary: In this study, peptide-based biomimetic catalysts were stabilized within porous COF scaffolds using a cladding technique. The peptide nanotubes exhibited enzyme-like behavior and efficiently catalyzed C-C bond cleavage in a buffer medium and organic solvents. The COF-clad catalysts showed operational stability and recoverability, making them promising materials for various biochemical transformations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shibani Mohata, Risov Das, Kalipada Koner, Mohd Riyaz, Kousik Das, Subhajit Chakraborty, Yutaro Ogaeri, Yusuke Nishiyama, Sebastian C. Peter, Rahul Banerjee
Summary: The conversion of CO2 to a carbonaceous product using photocatalysis is an important solution for reducing CO2 emissions and dependence on nonrenewable resources. However, developing a metal-free catalyst that is selective and efficient in CO2 reduction is challenging. In this study, a molecular engineering approach was used to design a photoactive polymer with high CO2 permeability and low water diffusivity, promoting CO2 transfer and suppressing the HER reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Meeting Abstract
Oncology
Meera Vimala Ragavan, Vanessa Elaine Kennedy, Rahul Banerjee, Amy M. Lin, Ana I. Velazquez Manana
JOURNAL OF CLINICAL ONCOLOGY
(2022)
Article
Biochemistry & Molecular Biology
George E. Cutsail, Rahul Banerjee, Derek B. Rice, Olivia McCubbin Stepanic, John D. Lipscomb, Serena DeBeer
Summary: In this study, Fe K beta X-ray emission spectroscopy was used to characterize the local spin states of key intermediates in soluble methane monooxygenase (sMMO) and it was discovered that these intermediates contain S-loc = 2 iron sites. This experimental determination will guide future computational and mechanistic studies of sMMO catalysis.
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2022)