Article
Engineering, Chemical
Pantita Trongjitraksa, Yoottapong Klinthongchai, Piyasan Praserthdam, Bunjerd Jongsomjit
Summary: This research investigates the catalytic activity of WO3 on SBA-15 and MCF-Si supports. The findings suggest that the three-dimensional mesocellular foam structure of MCF-Si and the incipient wetness impregnation of WO3 are crucial for obtaining a highly dispersed WO3 catalyst. Additionally, the high Lewis to Bronsted ratio of tungsten on silica is important for the catalytic dehydration of ethanol to ethylene.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Applied
Ying Kang, Xiaorong Rao, Pei Yuan, Chan Wang, Tinghai Wang, Yuanyuan Yue
Summary: By using a pH-adjusted prehydrolysis synthesis approach, an Al-functionalized SBA-15 with enhanced acidity suitable for hydroisomerization of alkanes was obtained. The acidity of Al-functionalized samples was significantly improved, leading to increased n-octane conversion compared to pure silica SBA-15. Among the three Al-containing SBA-15 materials, Al-SBA-15 showed relatively high selectivity and conversion rates.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Kiria Kojima, Ryota Osuga, Shuhei Yasuda, Toshiyuki Yokoi, Yasuhiro Hosogi, Shintaro Itagaki, Yoshikuni Okumura, Junko N. Kondo
Summary: The study showed that the HSiW·6H2O crystals loaded on SBA-15 and AEROSIL had weak secondary interactions with adjacent silanol groups, while destruction of Keggin units occurred on Al2O3. Furthermore, the IR method can be used to quantify the Bronsted and Lewis acid sites in the loaded HSiW·6H2O.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Christopher M. A. Parlett, Hamidreza Arandiyan, Lee J. Durndell, Mark A. Isaacs, Antonio Torres Lopez, Roong J. Wong, Karen Wilson, Adam F. Lee
Summary: The article demonstrates a method for continuous flow synthesis of SBA-15 at high yield at 80 degrees C using a simple tube reactor. The resulting SBA-15 exhibits excellent textural properties and far higher productivity than previously reported in batch or flow synthesis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Haoyu Yao, Lifei Liu, Dongxia Yan, Qing Zhou, Jiayu Xin, Xingmei Lu, Suojiang Zhang
Summary: By introducing a series of mesoporous catalysts, high quality BHET with good chroma was successfully prepared, achieving efficient PET degradation, and further studying the key factors influencing the reaction.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Rafael F. Perez, Luiz E. P. Borges, Marco A. Fraga
Summary: The study found that Zr-SBA-15 mesoporous catalysts can effectively convert xylose to furfuryl alcohol, but the activity and product distribution are significantly affected by the ratio of water to 2-propanol in the liquid phase.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Wenlan Cai, Xiaoyan Ni, Fanyong Meng, Lin Sun, Runwei Wang, Sen Lin
Summary: The acid-free synthesis of Ga-containing SBA-15 mesoporous materials allows for tuning their morphological and acidic properties. Ga-SBA-15 exhibits high acid amount and adjustable morphology due to the presence of dispersed bending particles. The improved interparticle-type mesoporosity of Ga-SBA-15 provides highly accessible active sites for large molecules. Ga-SBA-15 also shows a shift from Bro center dot nsted-type acidity to Lewis-type acidity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Jorge Gajardo, Julio Colmenares-Zerpa, A. F. Peixoto, D. S. A. Silva, J. A. Silva, F. Gispert-Guirado, J. Llorca, E. A. Urquieta-Gonzalez, J. B. O. Santos, J. Szanyi, C. Sepulveda, M. G. Alvarez, R. J. Chimentao
Summary: This study investigated the incorporation of high aluminum loading in the SBA-15 silica structure. Different Si/Al molar ratios were evaluated, and the mesoporous structure of the materials was demonstrated. The presence of higher aluminum content compromised the structural order, but did not affect the mesoporous structure. Higher aluminum loading increased the quantity of acid sites, and aluminum incorporation was confirmed through spectroscopic analysis.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Heriberto Esteban Benito, Ricardo Garcia Alamilla, Luz Arcelia Garcia Serrano, Francisco Paraguay Delgado, Juan Antonio Carmona Garcia
Summary: The influence of hafnium metal (Hf) and sulfate ions (SO42-) on the acidic properties of SiO2 mesopores was investigated. The addition of Hf resulted in collapse of the structural arrangement of MCM-41, but an increase in acid strength was observed. Hf- and (SO42-) -modified SiO2 showed selectivity towards the dehydration of ethanol and methanol, producing ethylene and dimethyl ether, respectively.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Applied
Issaraporn Rakngam, Nattawut Osakoo, Jatuporn Wittayakun, Narong Chanlek, Aniwat Pengsawang, Narongrit Sosa, Teera Butburee, Kajornsak Faungnawakij, Pongtanawat Khemthong
Summary: In this study, Al-incorporated SBA-15 materials were successfully prepared using a one-pot hydrothermal method, resulting in the generation of acid sites for catalysis. Despite similar Si/Al ratios, the different total acidities and Al tetrahedral coordination ratios of the samples were observed. Catalytic testing showed that all Al-SBA-15 samples exhibited better catalytic performance than pristine SBA-15.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Cristina Pizzolitto, Elena Ghedini, Somayeh Taghavi, Federica Menegazzo, Giuseppe Cruciani, Markus Peurla, Kari Eranen, Ivo Heinmaa, Atte Aho, Narendra Kumar, Dmitry Yu Murzin, Tapio Salmi, Michela Signoretto
Summary: The study focuses on improving the acidity of silica alumina composite using SBA-15, with modifications to enhance Lewis and Bronsted acidities, and introduction of alumina as a co-catalyst. The balanced acidities and proper porosity of the modified SBA-15 led to efficient performance in converting glucose to levulinic acid.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Lishil Silvester, Quentin Touloumet, Aiman Kamaruddin, Fernand Chassagneux, Georgeta Postole, Aline Auroux, Laurence Bois
Summary: This study investigated the influence of silica functionalization on SCa composites and found that the nonfunctionalized composite demonstrated the highest water sorption rate and heat storage capacity. The water uptake of all SCa composites was enhanced compared to pure CaCl2 due to the good dispersion of salt particles in the SBA pores.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Environmental Sciences
Zeinab Ezzeddine, Isabelle Batonneau-Gener, Yannick Pouilloux
Summary: The removal of zinc ions from water was studied using two types of ordered mesoporous silica (SBA-15 and SBA-16). Both materials were modified with APTES and EDTA through post grafting methods. The modified adsorbents were characterized by various analytical techniques, and the structural integrity was maintained. Optimal adsorption conditions and maximum adsorption capacity were determined through experimental tests, and the regenerated adsorbent showed no significant decline in adsorption efficiency.
Article
Chemistry, Applied
Xueqing Liu, Nengsheng Liu, Xiang Li, Yongming Luo, Xiaoying Li, Bo Hu, Xintao He, Chengwei Liu, Sufang He
Summary: Aluminum-modified SBA-15 mesoporous materials were synthesized and used as efficient adsorbents for As(V) removal. The effects of aluminum loading on the physicochemical properties of Al-x-SBA-15 were investigated, and it was found that an optimal loading of 10% resulted in the highest adsorption capacity. The adsorption kinetics were found to be controlled by both film diffusion and intraparticle diffusion.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Physics, Applied
Fnu Gorky, Shelby R. Guthrie, Courtney S. Smoljan, James M. Crawford, Moises A. Carreon, Maria L. Carreon
Summary: The mesoporous SBA-15 silica material demonstrated significantly higher efficiency in synthesizing ammonia through atmospheric dielectric barrier discharge plasma, mainly due to its hierarchically ordered pore structure that facilitates the diffusion of plasma discharge into the pores.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Environmental Sciences
Amanuel Gidey Gebretatios, Abdul Rasheed Kadiri Kanakka Pillantakath, Thongthai Witoon, Jun -Wei Lim, Fawzi Banat, Chin Kui Cheng
Summary: The discovery of Sto spacing diaeresis ber silica has expanded the realm of morphology-controlled mesoporous silica nanomaterials such as MCM-41, SBA-15, and KCC-1. These materials play a vital role in advancing techniques and technologies for addressing global challenges in water and the environment, energy storage, and biotechnology due to their high BET surface area, tunable pores, ease of functionalization, and excellent thermal and chemical stability. Synthesizing these materials from cost-efficient biomass wastes, particularly rice husk, is a sustainable model. This review discusses the valorization of rice husk into value-added silica materials, methods of high-quality silica extraction, and the synthesis principles of various mesoporous silica materials. The potential applications in catalysis, drug delivery, energy, adsorption, and environmental remediation are explored.
Article
Energy & Fuels
Muhammad Sheraz Ahmad, Kim Hoong Ng, Ching-Lung Chen, Faryal Kabir, Thongthai Witoon, Ta Yeong Wu, Chin Kui Cheng
Summary: This study reports the incorporation of N and P into the Pd/CNTs framework for selective oxidation of glycerol, resulting in a catalyst with superior electrocatalytic performance. The NP doped/PdCNTs exhibit better resistivity and require lower electrocatalysis voltage to achieve higher current density compared to other catalysts. The yield of 1, 3-dihydroxyacetone is significantly higher with NP doped/PdCNTs.
Article
Chemistry, Applied
Napaphut Dolsiririttigul, Thanapha Numpilai, Chularat Wattanakit, Anusorn Seubsai, Kajornsak Faungnawakij, Chin Kui Cheng, Dai-Viet N. Vo, Supinya Nijpanich, Narong Chanlek, Thongthai Witoon
Summary: Converting waste glycerol into 1,3-propanediol through catalysis offers a way to reduce waste from biodiesel production and the use of petroleum-based chemicals. This study investigated the effects of W loading contents and catalyst pretreatment conditions on glycerol conversion using Pt-WOx/Al2O3 catalysts. The optimized catalyst achieved high glycerol conversion (44.7%) and selectivity towards 1,3-propanediol (45.1%) under specific reaction conditions.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Thanaree Phongamwong, Noelia Barrabes, Waleeporn Donphai, Thongthai Witoon, Guenther Rupprechter, Metta Chareonpanich
Summary: Solar-driven photocatalysis is a promising approach for clean production using sunlight as an energy source. The efficiency of nanocrystalline TiO2 catalysts can be improved by functionalizing them with Au-25 clusters, Au nanoparticles, and chlorophyll. The most effective degradation of rhodamine B was achieved using a P25 catalyst functionalized with both Au-25 and chlorophyll. Various characterization techniques were used to investigate the factors influencing the photocatalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Dien-Thien To, Joon Ching Juan, Meng-Hsuan Tsai, Chia-Hsin Wang, Chih-Wen Pao, Chi-Liang Chen, Yu-Chuan Lin
Summary: FeCx catalysts were synthesized by co-pyrolyzing iron nitrate with various CN sources. The Fe-d-C3N4-(0.3)-Py catalyst exhibited the highest CO2 conversion, olefin yield, and olefin STY, attributed to its high surface FeCx concentration. A correlation between surface FeCx and hydrocarbon/olefin STY was established.
CATALYSIS SURVEYS FROM ASIA
(2023)
Article
Materials Science, Multidisciplinary
Po-Hsuan Hsiao, Zi-Xi Gao, Joon-Ching Juan, Yu -Pin Lin, Sung -Yu Chen, Chia- Yun Chen
Summary: Efficient ultraviolet photodetectors are developed by incorporating colloid carbon nanodot (CCND) layers with silicon substrates. The control over CCND thickness is found to improve the photosensing characteristics by investigating the morphologies, microstructure, light absorption, and carrier dynamics. The study shows that 35-nm thick CCNDs coupled with Si exhibit remarkable sensing responsivity of 15.9 A/W and detectivity of 2.94 x 10^14 Jones under 352 nm wavelength detecting lights. The underlying mechanism is attributed to the synergistic contributions from reduced dynamic dark currents and efficient charge separation from CCND/Si heterojunction.
Article
Chemistry, Applied
Pooripong Somchuea, Thitiwut Sukprom, Sarannuch Sringam, Santipab Ampansang, Thongthai Witoon, Metta Chareonpanich, Kajornsak Faungnawakij, Gunther Rupprechter, Anusorn Seubsai
Summary: The conversion of methane to value-added hydrocarbon C2+ was studied using a hybrid catalyst and the oxidative coupling of methane. The optimal conditions and performance of the hybrid catalyst were determined.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Applied
Thanapha Numpilai, Napaphut Dolsiririttigul, Apirat Laobuthee, Chin Kui Cheng, Narong Chanlek, Yingyot Poo-arporn, Thongthai Witoon
Summary: The present study investigates the possibility of enhancing the stability of SO42--ZrO2 catalyst by adding Cu (2-12 wt%) via a simple one-pot synthesis method. The structures of Cu undergo substantial changes, and can be classified into two different ranges of Cu loading: 2-8 wt% and 10-12 wt%. At Cu loading of 2-8 wt%, Cu2O is the predominant phase and strongly interacts with ZrO2, resulting in a decrease in acid sites and a lower DME yield compared to bare SO42--ZrO2. However, at Cu loading of 10-12 wt%, CuSO4 becomes the predominant phase and enhances the catalytic stability through bridging S-O-S bonds with Zr atom-bound S-O. The optimal Cu loading is 10 wt%, which achieves a maximum DME yield of 3.2% at 260 degrees C and 20 bar.
TOPICS IN CATALYSIS
(2023)
Article
Environmental Sciences
Thanapha Numpilai, Anusorn Seubsai, Metta Chareonpanich, Thongthai Witoon
Summary: This study investigates the impact of microporous and micro-mesoporous carbon supports on the dispersion, phase transformation, and arsenic(V) removal efficiency of iron oxides. The results show that carbon-supported iron oxide sorbents exhibit superior arsenic(V) uptake capacity compared to unsupported Fe2O3, attributed to reduced iron oxide crystallite sizes and arsenic(V) adsorption on carbon supports. The study provides insights for designing more efficient adsorbents for arsenic(V) removal from contaminated water sources.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Magdeline Tze Leng Lai, Kian Mun Lee, Thomas Chung Kuang Yang, Chin Wei Lai, Chia-Yun Chen, Mohd Rafie Johan, Joon Ching Juan
Summary: The construction of a p-n heterojunction photocatalyst successfully overcomes the low photo-catalytic activity caused by rapid charge recombination and limited photo-response range. In this study, an interlayer of expanded MoS2 coupled with Bi2WO6 (BW-IEM) photocatalyst was synthesized, achieving a Methylene Blue (MB) removal rate of up to 97% (5.18 x10-2 min-1) under the irradiation of low power 1W LED white light. The outstanding photocatalytic performance of the p-n heterojunctions BW-IEM photocatalyst is attributed to the enhancement of light harvesting, improvement in the separation of charge carriers, and coexistence of oxygen vacancy. The main reactive oxygen species (ROS) responsible for the photo-degradation of MB were center dot Oz radicals and center dot OH. This work provides a new strategy for the potential IEM photocatalyst as a matrix in a p-n heterojunction composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Santipab Ampansang, Sarannuch Sringam, Pooripong Somchuea, Thongthai Witoon, Chularat Wattanakit, Metta Chareonpanich, Hiesang Sohn, Anusorn Seubsai
Summary: This study investigated the performance of 20 wt% cobalt supported on alumina catalysts modified with alkaline earth metals (Mg, Ca, Sr, and Ba) in the oxidative coupling of methane. The catalysts showed high activity at low reactor temperatures, with the 20Co/Al2O3 loaded with 2.5 wt% Sr achieving the highest C2+ yield of 3.0% at 580 ?. The effects of various operating conditions were also studied, and the most outstanding catalyst exhibited excellent durability for 24 hours of testing at 580 ?.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Tanasan Intana, Sutarat Thongratkaew, Jeeranan Nonkumwong, Waleeporn Donphai, Thongthai Witoon, Metta Chareonpanich, Noriaki Sano, Kajornsak Faungnawakij, Sirapassorn Kiatphuengporn
Summary: The kinetics of catalytic furfural hydrogenation over copper aluminate spinel (CuAl2O4) were studied in a batch-type reactor. The CuAl2O4 catalyst showed excellent performance with 100% furfural conversion and >98% furfuryl alcohol yield. A kinetic model was established, which could be useful for industrial application.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Thitiwut Sukprom, Pooripong Somchuea, Sarannuch Sringam, Thongthai Witoon, Metta Chareonpanich, Pawin Iamprasertkun, Kajornsak Faungnawakij, Gunther Rupprechter, Anusorn Seubsai
Summary: This study investigated the direct conversion of methane (CH4) to value-added hydrocarbons (C2+) using a hybrid catalyst. The hybrid catalyst consisted of Ni/Al2O3 as the first catalyst layer to convert CH4 to carbon monoxide and K-Co/Al2O3 as the second catalyst layer to convert carbon monoxide to C2+. The hybrid catalyst exhibited effective performance at a relatively low temperature of 490 degrees C, compared to other catalysts used in methane oxidative coupling reactions. The study explored the effects of different operating conditions and found that the highest C2+ yield of 4.3% was achieved at a reactor temperature of 490 degrees C. The addition of K promoter played a crucial role in enhancing C2+ formation. The proposed mechanism for the reaction using the hybrid catalyst was described, and the stability of the catalyst was observed to be excellent during a 24-hour time-on-stream test.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Thanapha Numpilai, Thongthai Witoon
Summary: This study investigates the modification of pore structures in porous silica materials synthesized with sodium silicate and waste gelatin. The obtained bimodal porous silica showed superior CO2 uptake and outstanding stability, making it a promising material for CO2 capture.
Article
Chemistry, Multidisciplinary
Chiu Ling Ong, Yew Chong Lai, Thorsten Heidelberg, Wai Kit Tang, Vannajan Sanghiran Lee, Nader Ghaffari Khaligh, Joon Ching Juan
Summary: In this study, ashless and non-corrosive dimercaptobenzothiadiazole derivatives (BBST and BOST) were synthesized and evaluated. BBST exhibited superior performance in terms of extreme pressure and anti-wear properties, surpassing the conventional additives MCCP and ZDDP.
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
