Article
Energy & Fuels
Subhash B. Magar, Dan Bahadur Pal, Sumit Kumar Jana
Summary: The catalytic activity of biofuel additive was tested using supported heteropoly acid on bentonite and MCM-41 materials of different compositions. The results showed that the activity of the catalyst was influenced by the concentration of dodecatungsto-phosphoric acid (DTP) and the type of support material. The maximum selectivity towards di- and triacetin was achieved with a concentration of 60% DTP/BNT. The catalysts were characterized using XRD, FT-IR, and TGA/DTA analysis. Various trials were conducted on a mixture of the major product obtained from the esterification of glycerol biomass with acetic acid using the 60% DTP/BNT catalyst to evaluate the characteristics of the biofuel additive. The product showed excellent performance compared to conventional diesel biofuel additives.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Energy & Fuels
Jayashree Ethiraj, Dipti Wagh, Haresh Manyar
Summary: The increasing demand for transportation fuels, awareness of climate change, and dwindling supplies of crude oil have led to the rapid increase in production of biomass derived oxygenated fuel additives. Metal oxide catalysts play a crucial role in the synthesis of oxygenated fuel additives through various biorefinery processes.
Article
Chemistry, Physical
Ana Paula Soares Dias, Frederico Gomes Fonseca, Monica Catarino, Joao Gomes
Summary: The study focused on glycerin acetylation reaction using heterogeneous acid catalysts at 120 degrees C, showing the importance of catalyst stability, acidity, and porosity on product selectivity and yield.
Review
Green & Sustainable Science & Technology
Reza Sedghi, Hossein Shahbeik, Hajar Rastegari, Shahin Rafiee, Wanxi Peng, Abdul-Sattar Nizami, Vijai Kumar Gupta, Wei-Hsin Chen, Su Shiung Lam, Junting Pan, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: The boom of the biodiesel industry has led to increased global glycerol production, but a large portion of glycerol is recklessly discharged into the environment, overshadowing the environmental benefits of biodiesel fuel. By converting glycerol into fuels or additives, the energy content of glycerol can be effectively recovered while reducing harmful exhaust emissions from combustion engines. This paper provides a comprehensive review of the latest advances in using glycerol and its derivatives to improve the operation of internal combustion engines. Different pathways for converting glycerol into oxygenated fuel additives are introduced, and the effects of glycerol and its derivatives on engine behavior are comprehensively summarized and mechanistically discussed. The pros and cons of using glycerol and its derivatives in diesel/gasoline fuel formulations are examined to highlight important future research directions in this field.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Multidisciplinary Sciences
A. L. Olson, M. Tuner, S. Verhelst
Summary: Due to renewable fuel mandates, the increased production of biodiesel has resulted in an oversupply of low-cost glycerol, which may negatively impact the sustainability of the biodiesel industry. To address this issue, researchers have investigated the transformation of glycerol into value-added products, particularly additives for internal combustion engine fuels. This study provides a summary of the literature on the chemical pathways for converting glycerol into fuel additives, with a focus on glycerol acetals/ketals, ethers, and esters (acetates). The effectiveness of different glycerol-derived compounds is illustrated through various examples from the literature, and research gaps and suggestions for future work are also identified.
Article
Chemistry, Physical
Jimmy Nelson Appaturi, Pedro Maireles-Torres, Taghrid S. S. Alomar, Najla AlMasoud, Zeinhom M. M. El-Bahy, Tau Chuan Ling, Eng-Poh Ng
Summary: Acetylation of glycerol to produce monoacetin (MAT), diacetin (DAT), and triacetin (TAT) was studied using NiO-supported CeO2 catalysts. Different amounts of NiO (x = 9, 27, and 45 wt%) were supported on CeO2 through a sol-gel technique, with hexadecyltrimethylammonium bromide (CTABr) used as a porogen. The most active catalyst was found to be 27NiO/CeO2, achieving 97.6% glycerol conversion with 70.5% selectivity to TAT at 170°C.
Article
Chemistry, Applied
Natta Rattanapanya, Surachai Pornpakakul
Summary: The mixture of p-toluenesulfonic acid and sulfuric acid showed good performance as a catalyst in transesterification and etherification processes, resulting in fast reaction rates and high conversions. The catalyst could be reused for 6 cycles and offers an attractive route for converting biodiesel by-products into valuable fuel additives.
JOURNAL OF OLEO SCIENCE
(2021)
Review
Energy & Fuels
Marcio Jose da Silva, Neide Paloma Goncalves Lopes, Alana Alves Rodrigues
Summary: This article discusses the chemical transformation of glycerol to various compounds with high technological applications, especially in the fuel sector as bioadditives. The Keggin heteropolyacids (HPAs) are efficient catalysts in the syntheses of glycerol-derived bioadditives. However, their use as heterogeneous catalysts is hindered by their low surface area and solubility in polar solvents. Solid heteropoly salts, formed by converting HPAs to insoluble salts, have shown promise in reducing the cost and environmental impact of bioadditive synthesis processes.
Review
Energy & Fuels
Lei Xu, Yu Wang, Dong Liu
Summary: This review summarizes recent laboratory studies on the sooting characteristics of oxygenated fuels. It provides an overview of the latest understanding of soot formation mechanisms and discusses the effects of different oxygenated fuels on soot formation in conventional hydrocarbon combustion. The review emphasizes the chemical cross-linking effects and variations in soot morphology, nanostructure, and reactivity induced by oxygenated additives. It also highlights the potential implications of laboratory-scale results for understanding and predicting sooting behavior at the engine level.
Article
Chemistry, Physical
Swapna M. Gade, Vitthal B. Saptal, Bhalchandra M. Bhanage
Summary: This review discusses the synthesis, properties, and applications of glycerol carbonate (GC). The conversion of glycerol (GLY) to GC via transesterification is considered the most promising route. The effects of catalysts and operating conditions on GC yield are summarized, and future directions for GC production are discussed.
CATALYSIS COMMUNICATIONS
(2022)
Review
Energy & Fuels
Saad Ahmad, Ali Turab Jafry, Muteeb ul Haq, Naseem Abbas, Huma Ajab, Arif Hussain, Uzair Sajjad
Summary: Biofuels are renewable and environmentally friendly fuels that can be directly used in diesel engines. However, their physiochemical properties and emissions need improvement. This study focuses on blending oxygenated additives like alcohols and ethers with second-generation biodiesel to enhance performance and reduce emissions. The results show that adding methanol or diethyl ether to Neem biodiesel reduces fuel consumption and emissions, while diethyl ether also decreases NOx emissions by cooling the cylinder temperature. Addition of heptane, butanol, and diethyl ether to Jatropha biodiesel improves efficiency and reduces emissions. Calophyllum inophyllum biodiesel achieves similar results with the addition of butanol, pentanol, decanol, and hexanol. The study provides valuable insights for selecting efficient biodiesel blends in future research and implementation.
Article
Energy & Fuels
Srinivasa Rao Ginjupalli, PutraKumar Balla, Ramachandra C. Prabhu, Pethan N. Rajan, Ramyakrishna Pothu
Summary: Investigations on metal phosphate solid acid catalysts showed that NbP catalyst exhibited the highest activity and selectivity in glycerol acetylation and acetalization reactions. The material properties and reaction parameters also influenced the catalytic activity.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Jianan Zhang, Yuesen Wang, Valerie L. Muldoon, Sili Deng
Summary: Biodiesels are crucial in achieving low-carbon transportation as renewable fuels. The utilization of crude glycerol, a waste byproduct, to produce glycerol for fuel purposes is an affordable and direct approach. Combining crude glycerol with solid fuels can improve combustion performance, while glycerol as an oxygenated fuel additive lowers NOx emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Christianah Aarinola Akinnawo, Lebohang Mosia, Oyekunle Azeez Alimi, Charles O. Oseghale, Dele Peter Fapojuwo, Ndzondelelo Bingwa, Reinout Meijboom
Summary: Mesoporous ZrO2 exhibits good stability and selectivity in glycerol acetalization with aldehydes, with a selectivity of over 50% to 1,3-dioxane. This performance is attributed to its high surface area and Lewis acidity. The green application of meso-ZrO2 catalysts for sustainable acetalization of glycerol may be easily extended to other bio-based industrial processes.
CATALYSIS COMMUNICATIONS
(2021)
Article
Energy & Fuels
Dong Lin Loo, Yew Heng Teoh, Heoy Geok How, Thanh Danh Le, Huu Tho Nguyen, Tazien Rashid, Daphiny Pottmaier, Farooq Sher
Summary: This study investigates the tribological behavior of filtered tire pyrolysis oil (FTPO)-biodiesel-diesel blended fuel with the addition of various nanoparticles. The results show that low concentrations of nanoparticle additives provide better anti-friction performance in the blended fuel by forming a protective film. 0.1 wt% of aluminum oxide (Al2O3) nano-fuel exhibits the best anti-wear performance.
Article
Energy & Fuels
Usman Idris Nda-Umar, Irmawati Ramli, Ernee Noryana Muhamad, Yun Hin Taufiq-Yap, Norsahida Azri
Summary: Sulfonated carbon catalysts were synthesized using different carbonization methods and characterized in detail. The catalytic activity of the catalysts in glycerol acetylation was influenced by their textural properties and acidic site density.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Physical
Collin G. Joseph, Yun Hin Taufiq-Yap, Elilarasi Letshmanan, Veena Vijayan
Summary: The synthesized TiO2-SiO2 nanocomposite was characterized, and the photocatalytic chlorination process exhibited the highest degradation efficiency. The presence of TiO2-SiO2 enhanced the removal of methylene blue, and reactive chlorine species (RCS) were found to be the main contributor to the degradation process.
Article
Engineering, Chemical
H. H. Lim, F. L. Pua, R. Othman, Y. H. Taufiq-Yap, S. G. Krishnan
Summary: In this paper, a solid base catalyst KF/CLW-Fe3O4 was synthesized from carbide lime waste and used for the optimization study on methyl ester production. The catalyst was characterized and the impact of reaction parameters on the catalyst was evaluated using the Taguchi method, resulting in high methyl ester conversion.
BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS
(2022)
Article
Energy & Fuels
Nurul Asmawati Roslan, Sumaiya Zainal Abidin, Osarieme Uyi Osazuwa, Sim Yee Chin, Y. H. Taufiq-Yap
Summary: This study evaluated the catalytic activity of ruthenium-doped catalysts with different loadings in glycerol dry reforming reactions. The results showed that the 3%Ru-15%Ni/EA catalyst had the best catalytic activity and stability, and it was more coke-resistant compared to other promoted catalysts.
Article
Chemistry, Analytical
Wan Nor Adira Wan Khalit, N. Asikin-Mijan, Tengku Sharifah Marliza, M. Safa-Gamal, Mohd Razali Shamsuddin, I. Nur Azreena, Mohd Izham Saiman, Y. H. Taufiq-Yap
Summary: In this study, green diesel was successfully synthesized using Ni20Zn10/AC catalyst with good deoxygenation performance and recyclability, showing great potential for commercialization.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Review
Chemistry, Multidisciplinary
Nur Alia Sheh Omar, Yap Wing Fen, Ramli Irmawati, Hazwani Suhaila Hashim, Nur Syahira Md Ramdzan, Nurul Illya Muhamad Fauzi
Summary: This paper reviews the synthesis of carbon dots using green and chemical precursors and discusses their application in environmental monitoring.
Review
Materials Science, Multidisciplinary
Aminul Islam, Siow Hwa Teo, Chi Huey Ng, Yun Hin Taufiq-Yap, Shean Yaw Thomas Choong, Md. Rabiul Awual
Summary: This article discusses the interest in developing catalytic desulfurization and denitrification to remove toxic or harmful gases before atmospheric emission. A review of new and advanced SOx/NOx mitigation techniques is provided, offering insights into the key features of this field.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Energy & Fuels
Fatma S. Hafez, Bahaaeddin Sa'di, M. Safa-Gamal, Y. H. Taufiq-Yap, Moath Alrifaey, Mehdi Seyedmahmoudian, Alex Stojcevski, Ben Horan, Saad Mekhilef
Summary: This article provides a systematic review of best practices in targeting energy efficiency as a roadmap for carbon mitigation, limiting energy use, improving buildings' energy performance, and reducing energy consumption. It identifies challenges, motivations, recommendations, and pathways for future work, while also discussing methodological aspects for future researchers.
ENERGY STRATEGY REVIEWS
(2023)
Article
Chemistry, Applied
Azizul Hakim Lahuri, Afidah Abdul Rahim, Norazzizi Nordin, Rohana Adnan, Nur Farhana Jaafar, Yun Hin Taufiq-Yap
Summary: Activated carbon treated with KMnO4 and impregnated with iron oxide showed the highest adsorption capacity of 108.60 mg/g. The CO2 adsorption isotherm at 25 °C fitted best with the Freundlich model, indicating multilayer adsorption on a heterogeneous surface. The optimum adsorption temperature was found to be 30 °C, and the adsorption followed a pseudo-second-order kinetic with an activation energy of 39.8 kJ/mol. The slight reduction in adsorption capacity after four cycles demonstrated practical efficiency in CO2 capture.
Article
Biochemistry & Molecular Biology
Gopalakrishnan Sasikumar, Annadurai Subramani, Ramalingam Tamilarasan, Punniyamurthy Rajesh, Ponnusamy Sasikumar, Salim Albukhaty, Mustafa K. A. Mohammed, Subramani Karthikeyan, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Yun Hin Taufiq-Yap
Summary: A series of ternary metal complexes (Co(II), Ni(II), Cu(II), and Zn(II)) were synthesized and characterized by elemental analysis and spectroscopic methods. These complexes were synthesized from metal salts with Schiff's-base-containing amino acids, salicylaldehyde derivatives, and heterocyclic bases, and showed promising pharmacological properties. The complexes exhibited a distorted, square pyramidal geometry around metal ions and their molecular structures were optimized by DFT calculations. The complexes were further investigated for their electrochemical behavior, catalytic properties, antibacterial activity, cytotoxic effects, and anticancer applications.
Article
Multidisciplinary Sciences
Ramalingam Tamilarasan, Annadurai Subramani, G. Sasikumar, Pandurangan Ganapathi, S. Karthikeyan, Sasikumar Ponnusamy, Salim Albukhaty, Mustafa K. A. Mohammed, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Duha S. Ahmed, Yun Hin Taufiq-Yap
Summary: In this study, water-soluble substituted trimeric triaryl pyridinium cations with various inorganic counter anions were successfully synthesized using a solvent-free method. Compared to conventional and silica-supported Muffle furnace methods, the solvent-free synthesis method offers advantages such as non-toxicity, quicker reaction times, ease of workup, and higher yields. Trimeric substituted pyridinium salts exhibit excellent catalytic activity for the preparation of Gem-bisamide derivatives. The molecular docking results showed that benzyl/4-nitrobenzyl substituted triaryl pyridinium salt compounds can strongly interact with VEGFR-2 kinase and control its activity in cancer treatment and prevention.
SCIENTIFIC REPORTS
(2023)
Review
Environmental Sciences
Chi Huey Ng, Mohd Aizzan Mistoh, Siow Hwa Teo, Andrea Galassi, Azreen Ibrahim, Coswald Stephen Sipaut, Jurry Foo, Jeffrey Seay, Yun Hin Taufiq-Yap, Jidon Janaun
Summary: Plastic pollution is a pressing environmental issue that has caused severe and irreversible impacts on marine life, ecosystems, and the environment due to the lack of effective waste management systems. Limited resources and infrastructure in Southeast Asia pose constant challenges to waste management. This study aims to examine the plastic situation in Southeast Asia, understand the issues with existing waste management systems, and review the efforts made by governments, private sectors, social organizations, stakeholders, and consumers to combat plastic pollution.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Amadi Fidelis Uchenna, Ramli Irmawati, Yun Hin Taufiq-Yap, Saiman Mohd Izham, Usman Idris Nda-Umar
Summary: A biomass derived carbon supported yttrium oxide catalyst (Y2O3/PKS-T700) was synthesized and showed high glycerol conversion and product selectivity in glycerol acetylation reaction. The synthesized catalyst exhibited mesoporous structure, large surface area, and good thermal stability. The catalyst was characterized by various analytical techniques including BET surface area analysis, XRD, TGA, SEM-EDX, FTIR, and TPD-NH3.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Review
Environmental Sciences
Nurul Najiha Datu Masjidin, Collin Glen Joseph, Yun Hin Taufiq-Yap, Ahmad Zuhairi Abdullah, Noor Fazliani Shoparwe, Nur Ammarah Affandi, Janice Lay Hui Nga
Summary: Aquaculture sectors are rapidly developing worldwide, but their untreated effluents can have detrimental effects on the environment. Pollution and industrial waste are endangering water resources and damaging ecosystems globally. Therefore, it is essential to develop treatment methods for wastewater. Photolysis and photocatalysis, as part of advanced oxidation processes (AOPs), offer a sustainable option for the removal of recalcitrant pollutants from aquaculture effluents. This review aims to provide an overview of the application of photolysis and photocatalysis for degradation of recalcitrant pollutants from aquaculture effluents, discussing degradation schemes, experimental factors, and employed photocatalysts.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2023)
