Article
Engineering, Environmental
Ana Paula Soares Dias, Marta Ramos
Summary: Lime based catalysts are active in oil alcoholysis and biodiesel production, but their sensitivity to moisture and CO2 may hinder industrial applications. After 180 days of storage, it was found that the biodiesel yield of lime catalysts decreased with time, with a peak yield reached on day 30. Additionally, the stability of CaO material during storage and handling was demonstrated by successful reactivation through annealing at 470 degrees C.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Sumari Sumari, Diah Ayu Sulistyoningsih, Fitri Aisyah, Aman Santoso, Muhammad Roy Asrori, Agus Budianto, Mukhamad Nurhadi, Sin Yuan Lai
Summary: This study used Na2O-K2O/ANM and MgO-CaO/ANM as catalysts for transesterification of kapok seed oil. The results showed that a Na2O-K2O/ANM catalyst with a 1:1 ratio and 50% concentration had the lowest acidity and highest yield. The MgO-CaO/ANM catalyst with a 2:1 ratio and 40% concentration had the highest yield and lowest acidity. The synthesized biodiesel met the standard requirements.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Warisara Woranuch, Kanokwan Ngaosuwan, Worapon Kiatkittipong, Doonyapong Wongsawaeng, Weerinda Appamana, Jon Powell, Samuel Lalthazuala Rokhum, Suttichai Assabumrungrat
Summary: In recent years, attention has been focused on the use of heterogeneous catalysts, with CaO powder being considered a promising catalyst for biodiesel production. Through investigation of catalyst pellet fabrication parameters, it was found that using an Al2O3 binder resulted in higher catalytic activity compared to kaolin and diatomite supported catalysts. The CaO to Al2O3 mass ratio significantly affected surface area and total basicity, with the CaO-A(800)-3.5:1 catalyst showing the highest biodiesel yield due to the presence of multiple active crystal phases.
Article
Thermodynamics
Hao Sun, Mingzhe Ma, Mengmeng Fan, Kang Sun, Wei Xu, Kui Wang, Baojun Li, Jianchun Jiang
Summary: In this study, biomass derived activated carbon supported nano-CaO catalysts were prepared, and the catalytic performance was improved by eliminating phosphate groups and using a deposition-precipitation method.
Article
Energy & Fuels
Fekadu Ashine, Zebene Kiflie, Sundramurthy Venkatesa Prabhu, Belachew Zegale Tizazu, Venkatramanan Varadharajan, Manivasagan Rajasimman, Sang-Woo Joo, Yasser Vasseghian, Mani Jayakumar
Summary: The present study optimized the process of biodiesel production from Argemone mexicana oil using calcium oxide as a catalyst derived from chicken eggshells. The catalyst was characterized and the parameters were optimized through response surface methodology, resulting in a high yield of biodiesel. Non-statistical techniques were used to analyze the optimal values, and the obtained biodiesel was characterized using spectroscopic techniques.
Article
Materials Science, Multidisciplinary
Piyanan Boonphayak, Sirikarn Khansumled, Chokchai Yatongchai
Summary: In this study, CaO-SiO2 catalysts were synthesized using lime mud and kaolin residue, with a simple precipitation and calcination process. The catalysts consisted of quartz, CaO and Ca(OH)(2) with varying proportions depending on the CaO:SiO2 ratio. The FAME yield reached up to 93% with a specific catalyst ratio, but decreased with reuse.
Article
Biotechnology & Applied Microbiology
Yan Liu, Biju Theruvil Sayed, R. Sivaraman, Saad M. Alshahrani, Kumar Venkatesan, Kamal Y. Thajudeen, Mohammed Al-Bahrani, Salema K. Hadrawi, Ghulam Yasin
Summary: In recent years, efforts have been made to develop environmentally friendly fuels to combat the negative effects of fossil fuels on the ecosystem. Alternative biodiesel transport fuels (ABTF) have shown promising potential due to their non-toxicity and biodegradability. This paper utilizes neural network-based approaches to predict the performance of ABTF based on input features such as reaction duration, catalyst amount, and methanol/oil ratio. After tuning and evaluating different neural network models, the boosted multilayer perceptron is identified as the most accurate model with an optimal output value of 98.99 when the input vector is (x1 = 158, x2 = 1.25, x3 = 33.75).
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Agricultural Engineering
S. Sivanesh, K. N. Aswin, Alan Antony, Mohan Surya Varma, Arya Lekshmi, K. Kamalesh, M. Naageshwaran, S. Soundarya, Sindhu Subramanian
Summary: This study investigated the production of biodiesel from Euglena Sanguinea microalgae and custard apple using nano CaO as a heterogeneous catalyst. Different solvents were used for oil extraction, and response surface methodology was employed to determine optimal process variables. Characterization of biodiesel was done using GC-MS, and kinetic studies suggested a pseudo-first order reaction for the optimized condition of algal oil and seed oil.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Vinicius Mateo e Melo, Gabriela Filipini Ferreira, Leonardo Vasconcelos Fregolente
Summary: This article discusses the challenges faced in biodiesel production and the advantages of using heterogeneous catalysts. Research has shown that catalysts derived from sugarcane bagasse biochar have good activity and stability, and can be reused for multiple cycles. However, further studies are needed to reduce calcium ion leaching and explore the potential of using catalysts derived from sugarcane bagasse biochar.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Yujiao Zhang, Shengli Niu, Kuihua Han, Yingjie Li, Chunmei Lu
Summary: The composite catalyst 0.4-SrO-CaO-Al2O3 shows the best catalytic capability in transesterification of palm oil with methanol to produc biodiesel, achieving a FAME yield of 98.16%. The stability and reusability of the catalyst are greatly enhanced by reducing leaching out of active species. The modification method for SrO-CaO-Al2O3 is feasible for enhancing catalytic stability in transesterification.
Article
Energy & Fuels
Sana Gohar Khan, Muhammad Hassan, Mustafa Anwar, Zeshan, Uneeb Masood Khan, Chao Zhao
Summary: This research presents the synthesis and application of Pr-CaO catalysts for biodiesel production from castor oil, which showed stable, active, and low-cost characteristics. The obtained catalyst exhibited a high FAME yield of 87.42% under optimal reaction conditions using 7% Pr-CaO mixed oxide catalyst.
Article
Energy & Fuels
Chuchai Sronsri, Wanpasuk Sittipol, Kongpop U-yen
Summary: This study investigated the impact of different CaCO3 crystal forms on the properties of CaO catalysts and the yield of biodiesel under magnetic field exposure. It was found that CaO catalysts prepared from various polymorphs of CaCO3 yielded over 85% biodiesel production under optimal conditions, showing potential environmental and social benefits.
Article
Chemistry, Physical
Xincheng Li, Ruiyi Wang, Jin Zhang, Jing Wang, Yunwei Wang, Zhanfeng Zheng
Summary: This study presents the design of an efficient photocatalyst, Ni2P/TiO2, for the selective hydrogenation of phenylacetylene to styrene. The catalyst exhibits excellent photocatalytic activity and selectivity, attributed to the isolation and electronic effect of P introduced in the catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
A. G. Margellou, A. A. Koutsouki, D. E. Petrakis, M. G. Kontominas, P. J. Pomonis
Summary: This study examines the catalytic transesterification of rapeseed oil for biodiesel production using four mixtures of MgO-CaO oxides as heterogeneous catalysts. The addition of CaO to pure MgO oxide reduces the catalytic activity and decreases the yield of methyl ester.
BIOENERGY RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Narita Chanthon, Nattawadee Munbupphachart, Kanokwan Ngaosuwan, Worapon Kiatkittipong, Doonyapong Wongsawaeng, Weerinda Mens, Samuel Lalthazuala Rokhum, Suttichai Assabumrungrat
Summary: The enhancement in catalytic activity was observed by using metal loading on CaO/Al2O3 pellet catalysts, with Sr-CaO/Al2O3 catalyst showing the highest catalytic activity and stability.
Article
Chemistry, Applied
Takeshi Furusawa, Moemi Watanabe, Ryosuke Kadota, Taki Matsumoto, Masahide Sato, Noboru Suzuki
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Engineering, Environmental
Takeshi Furusawa, Fumio Kurayama, Miyuki Shiba, Ryosuke Kadota, Masahide Sato, Noboru Suzuki
CHEMICAL ENGINEERING JOURNAL
(2016)
Article
Chemistry, Applied
Takeshi Furusawa, Ryosuke Kadota, Masahide Sato, Noboru Suzuki
FUEL PROCESSING TECHNOLOGY
(2016)
Article
Engineering, Chemical
Takeshi Furusawa, Masayuki Shirasu, Keita Sugiyama, Takafumi Sato, Naotsugu Itoh, Noboru Suzuki
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2016)
Article
Engineering, Chemical
Kazunobu Kamiya, Noboru Suzuki
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2016)
Article
Chemistry, Applied
Kazunobu Kamiya, Noboru Suzuki
JOURNAL OF MICROENCAPSULATION
(2016)
Article
Engineering, Chemical
Md Obaidullah, Takeshi Furusawa, Iqbal Ahmed Siddiquey, Newaz Mohammed Bahadur, Masahide Sato, Noboru Suzuki
ADVANCED POWDER TECHNOLOGY
(2018)
Article
Agricultural Engineering
Fumio Kurayama, Tomomi Yoshikawa, Takeshi Furusawa, Newaz Mohammed Bahadur, Hiroaki Handa, Masahide Sato, Noboru Suzuki
BIORESOURCE TECHNOLOGY
(2013)
Article
Energy & Fuels
Takeshi Furusawa, Katsuhiko Saito, Yoshihiko Kori, Yasutomo Miura, Masahide Sato, Noboru Suzuki
Article
Engineering, Chemical
Takeshi Furusawa, Tatsuya Ogawa, Takashi Numao, Masahide Sato, Noboru Suzuki
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2012)
Article
Engineering, Chemical
Takeshi Furusawa, Yusaku Kadota, Aya Matsuzuka, Fumio Kurayama, Newaz Mohammed Bahadur, Masahide Sato, Noboru Suzuki
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2014)
Article
Chemistry, Physical
Fumio Kurayama, Satoru Suzuki, Newaz Mohammed Bahadur, Takeshi Furusawa, Hajime Ota, Masahide Sato, Noboru Suzuki
JOURNAL OF MATERIALS CHEMISTRY
(2012)
Article
Chemistry, Multidisciplinary
Newaz Mohammed Bahadur, Fumio Kurayama, Takeshi Furusawa, Masahide Sato, Iqbal Ahmed Siddiquey, Md. Mufazzal Hossain, Noboru Suzuki
JOURNAL OF NANOPARTICLE RESEARCH
(2013)
Article
Engineering, Chemical
Md. Obaidullah, Takeshi Furusawa, Iqbal Ahmed Siddiquey, Masahide Sato, Noboru Suzuki
ADVANCED POWDER TECHNOLOGY
(2017)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
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
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)