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Synergistic NiCo-BTC Catalysts for the Catalytic Transfer Hydrogenation of Furfural to γ-Valerolactone: Insights from Monometallic Cu-, Ni-, and Co-BTC Comparison
(2026-10-01)
Thansirisunthorn, Sudarat
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Teerawatananond, Thapong
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Shoosri, Tanyarat
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Rungtaweevoranit, Bunyarat
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Miyake, Takanori
A series of monometallic Cu-BTC, Ni-BTC, and Co-BTC catalysts was successfully synthesized via the solvothermal method to evaluate their performance in the catalytic transfer hydrogenation of furfural (FF) to γ-valerolactone (GVL). The Co-BTC and Ni-BTC catalysts exhibited higher FF conversion, selectivity, and GVL yield than Cu-BTC due to favorable redox properties of Co2+ and Ni2+ and stronger acidity that enhance substrate activation and key ring-opening and lactonization steps. To further enhance performance, bimetallic NiCo-BTC catalysts with different Ni/Co mole ratios (0.25, 0.50, 0.75, 1.00) were developed. All bimetallic NiCo-BTC catalysts outperformed the monometallic counterparts, with 0.50NiCo-BTC achieving complete FF conversion and the highest GVL selectivity and yield of 89% at 200 °C after 24 h. TEM, XPS, XANES, and NH<inf>3</inf>-TPD analyses indicated that the enhanced catalytic activity and selectivity arise from synergistic Ni-Co interactions and increased surface acidity. Time-resolved product analysis confirmed a sequential pathway with furfuryl alcohol (FA) as a key intermediate. Moreover, the 0.50NiCo-BTC catalyst exhibited good reusability over three cycles with minimal activity loss, demonstrating structural stability under reaction conditions. These results highlighted the importance of metal synergy and acid site tuning in designing highly efficient metal organic framework catalysts for biomass upgrading via catalytic transfer hydrogenation.
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Sustainable Liquid-Phase Selective Hydrogenation of CO2 to C1–C3 Alcohols over Mg-, Zn-, and Pt-Modified Copper Phyllosilicate Catalysts: Insight Reaction Pathways
(2026-07-27)
Poson, Suttiporn
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Teerawatananond, Thapong
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Shoosri, Tanyarat
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Miyake, Takanori
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Panpranot, Joongjai
The sustainable conversion of carbon dioxide (CO<inf>2</inf>)into value-added chemicals remains a major challenge, particularly for the selective formation of C<inf>1</inf>–C<inf>3</inf> alcohols. Herein, bimetallic copper phyllosilicate catalysts (1%X-20%CuPS, X = Zn, Mg, Pt) were developed and systematically evaluated for the liquid-phase hydrogenation of CO<inf>2</inf> to alcohols compared with monometallic 20%CuPS as a benchmark. Among these catalysts, 1%Mg-20%CuPS exhibited the highest activity, excellent stability, and good reusability, highlighting the beneficial role of earth-abundant metal promotion. The enhanced performance is attributed to increased surface basicity and stronger CO<inf>2</inf> adsorption, which facilitated the formation and stabilization of formate intermediates. Concurrently, in situ reduction of Cu+/Cu0 sites promotes efficient H<inf>2</inf> dissociation and subsequent hydrogenation steps. A high surface Mg/Si ratio further stabilizes CO-derived intermediates and promotes CO-mediated C–C coupling, favoring C<inf>2</inf><inf>+</inf> alcohol formation. Zn incorporation induced similar but less pronounced effects, whereas Pt altered the reaction network, leading to increased byproduct formation and lower alcohol selectivity. After 24 h, the total alcohol selectivity followed the order 1%Mg-20%CuPS (98%) > 1%Zn-20%CuPS (88%) > 1%Pt-20%CuPS (73%) > 20%CuPS (67%). Overall, second metal modification effectively tunes catalyst properties and reaction pathways, with Mg emerging as a sustainable and industrially viable promoter for CO<inf>2</inf> valorization to C<inf>1</inf>–C<inf>3</inf> alcohols.
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DBU-Mediated Reaction of 3-Chlorooxindole and 9-Xanthyl Fluorene for Synthesis of 3-Arylidene Oxindole
(2025-04-01)
Purahong, Nitchakan
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Teerawatananond, Thapong
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Chotsaeng, Nawasit
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Janthakit, Pattarapapa
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Nalaoh, Phattananawee
This work reports a new route for the synthesis of 3-(9H-fluoren-9-ylidene)indolin-2-one derivatives via the reaction of 3-chlorooxindoles and O-ethyl S-(9H-fluoren-9-yl) carbonodithioates mediated by 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). The reactions readily proceeded at room temperature, enable a collection of 3-alkenyl oxindoles to be prepared within a short reaction time (15 minutes). The 3-alkenyl oxindoles can be easily converted to 3-fluorenyl oxindoles by NaBH<inf>4</inf> reduction.
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Role of Copper Species in Copper Phyllosilicate Catalysts for the Catalytic Transfer Hydrogenation of Furfural to γ-Valerolactone
(2025-02-17)
Shoosri, Tanyarat
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Thongratkaew, Sutarat
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Rungtaweevoranit, Bunyarat
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Kraithong, Wasawat
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Faungnawakij, Kajornsak
Copper phyllosilicate (CuPS) catalysts were synthesized and evaluated for the catalytic transfer hydrogenation of furfural to γ-valerolactone (GVL). Various copper loadings (10–30 wt.%) were studied to elucidate the impact of copper species on catalytic performance. Notably, a high dispersion of copper (%D<inf>Cu</inf> ≈ 70%) and a substantial BET surface area (620 m2/g) were achieved, even at the maximum copper loading of 30 wt.%. TR-XANEs and XPS analyses identified the two geometric structures of Cu2⁺ on the CuPS catalysts; square planar and octahedral alongside Cu⁺/Cu⁰ species were formed upon reduction at temperatures exceeding 200 °C. The reduced 30% CuPS-R catalyst, enriched in metallic Cu⁰, achieved complete conversion of furfural, but exhibited low GVL selectivity (22%). Conversely, the as-synthesized 30% CuPS, predominantly composed of Cu2⁺, showed a lower furfural conversion (14%) but higher selectivity for GVL (37%). The physical mixing of 30% CuPS-R and 30% CuPS in a 50:50 ratio yielded the best catalytic performance, resulting in 100% furfural conversion and 86% GVL selectivity. The findings suggest that metallic Cu⁰ is essential for initiating the conversion of furfural, while Cu2⁺ plays a critical role in GVL formation. An optimal Lewis/Brønsted acidity (L/B) ratio of 5.7 is proposed for the mixed catalysts. The proposed reaction mechanism underscores the complex interplay between different copper species and acid sites, emphasizing the need for optimizing both metal and acid functionalities in catalyst design.
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Bimetallic copper- and nickel-rich Cu-Ni phyllosilicate catalysts for the liquid phase selective hydrogenation of furfural to furfuryl alcohol
(2024-12-02)
Shoosri, Tanyarat
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Chotiwilaiwan, Pisacha
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Rattanapornchaiwat, Tanisorn
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Teerawatananond, Thapong
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Miyake, Takanori
Bimetallic Cu-Ni phyllosilicates (Cu-NiPS) with various Ni/Cu ratios (5 : 15, 10 : 10, 15 : 5 wt%) were synthesized using ammonia evaporation hydrothermal method to obtain copper-rich or nickel-rich Cu-Ni alloys. These catalysts were evaluated for the selective hydrogenation of furfural (FF) to furfuryl alcohol (FA) in the liquid phase under relatively mild conditions (100 °C, 20 bar H<inf>2</inf>). The bimetallic Cu-NiPS catalysts exhibited excellent dispersion of the Ni-Cu alloy with average particle sizes ranging from 3.8 to 4.8 nm and demonstrated significantly enhanced catalytic performance over the monometallic nickel phyllosilicate (20% NiPS). The copper-rich Ni-Cu alloy (15% Cu-5% NiPS) exhibited the highest FF conversion efficiency (88%) and FA selectivity (90%). This superior performance is attributed to its smallest particle size, higher proportion of Cu0 and the synergistic interactions between Ni and Cu. This synergy effectively stabilizes the carbonyl group while promoting efficient H<inf>2</inf> dissociation and FA desorption, thereby facilitating the hydrogenation of FF to FA. Furthermore, the catalyst exhibited excellent recyclability and maintained high conversion efficiency and selectivity over multiple cycles.
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Financial Innovation and Crowdfunding: Influencing Investment Decisions in Tech Startups
(2024-12-01)
Panitkulpong, Kaimuk
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Saengnoree, Amnuay
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Teerawatananond, Thapong
This study investigates the financial behavior of Thai investors in equity crowdfunding (ECF), focusing on the factors that influence their investment intentions. Drawing upon the Information System Success Model (ISSM), the Theory of Diffusion of Innovations, and the Technology Acceptance Model 3 (TAM3), the research examines the platform quality (PQ), platform characteristics (PC), and social influence (SI) as independent variables, with the perceived usefulness (PU) and perceived ease of use (PEOU) acting as mediators. Data were gathered from 275 Thai investors and analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The findings reveal that the PU significantly influences investment decisions both directly and indirectly through the PEOU, which also directly affects investment intention. Furthermore, SI, PC, and PQ have indirect effects on investment decisions via the PU and PEOU, with SI being the most influential factor. This study provides valuable insights into optimizing ECF platform design, fostering investor trust, and enhancing regulatory frameworks to facilitate financial inclusion and innovation in the Thai crowdfunding landscape.
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Innovative factors affecting performance of local government organizations in Thailand
(2024-01-01)
Tunjararuck, Anake
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Saengnoree, Amnuay
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Teerawatananond, Thapong
This dissertation aimed (1) to study factors that have causal influences that affect the performance of municipalities. (2) to study the causal relationship model of innovative organizations, innovative capabilities, service innovation and performance management that influences the performance of municipalities. (3) to develop a linear structural equation model of the influence of service innovation, innovation organization, innovative capabilities and performance management that affects the performance of local government organizations in the category of municipalities in Thailand. The sample group were 320 executives of local government organizations in the category of municipalities in Thailand. Sampling was done in 2 steps: stratified and systematic sampling. This study is a quantitative study, and the research tool was a structured questionnaire and data were analyzed by percentage, mean, standard deviation, skewness, kurtosis, and confirmatory component analysis and structural equation model analysis. The findings of this study demonstrate significant direct effects of innovative capabilities, service innovation and performance management on performance of local government organizations in Thailand. Moreover, it was observed that innovative organizations and innovative capabilities also exerted indirect effects on performance of local government organizations through their influence on performance management, serving as mediator variables. Through the development of a structural equation model, it was determined that innovative capabilities had the greatest overall influence on the performance of local government organizations in the category of municipalities in Thailand, followed by performance management, service innovation and innovation organization, respectively. This research study made executives of local government organizations in category of municipalities in Thailand can be used as a guideline in determining strategies for managing their organization to be able to keep up with changes in the digital world and to ensure that the performance of the local government organization achieves the specified goals in terms of both efficiency and effectiveness.
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The Factors Influencing Investor Intentions to Invest in Equity Crowdfunding in Thailand: A Conceptual Framework
(2023-01-01)
Panitkulpong, Kaimuk
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Saengnoree, Amnuay
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Deebhijarn, Samart
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Teerawatananond, Thapong
Equity Crowdfunding (ECF) has emerged as a significant financing tool for early-stage ventures in Thailand, attracting a diverse investor base. Considering the novelty of ECF platforms as non-bank equity investment options, investigating these investors' decisions is essential, even though this is an under-researched area despite ECF's rising popularity. This study aims to identify the key factors influencing investment decisions in ECF and establish a conceptual framework, with a particular focus on projects offering stock issuance through an ECF platform in Thailand. The framework is grounded in the Technology Acceptance Model (TAM3) and incorporates elements from the Information Systems Success Model (ISSM), Innovation Diffusion Theory (IDT), and Social Influence (SI) factors. The intention to invest in an ECF platform serves as the dependent variable within this framework. The research presents a comprehensive model of ECF, intending to provide valuable insights to platform providers and policymakers. This understanding of investor behavior prior to investment could contribute to the growth and sustainability of ECF in Thailand.
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Synthesis and cytotoxicity study of gold(III) porphyrin complexes and their derivative in breast cancer cells
(2021-12-01)
Phromsatit, Tossapon
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Arpornmaeklong, Premjit
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Shirosaki, Yuki
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Teerawatananond, Thapong
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Rabablert, Jundee
Gold(III) [Au(III)] complexes exhibit potential anticancer activities. A series of Au(III) porphyrin complexes containing different meso-substituent groups (phenyl, methoxyphenyl, butyloxyphenyl, octyloxyphenyl, and decyloxyphenyl) was synthesized. The synthesized compounds were characterized using mass spectrometry, infrared spectroscopy, UV–visible and fluorescence spectroscopy, and electron paramagnetic resonance spectroscopy. Moreover, the in vitro cytotoxicity of these Au(III) porphyrin complexes was investigated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide surrogate viability assay on an MCF7 human breast cancer cell line. The Au(III) complexes with 5,10,15,20-tetraphenylporphyrin (AuTPP) and 5,10,15,20-tetrakis(4-methyloxyphenyl)porphyrin (AuTOMPP) demonstrated high anticancer activity with IC<inf>50</inf> values against MCF7 cells at 4.30 and 25.35 µM, respectively. The toxicity of the Au(III) porphyrin complexes against the LLC-MK2 rhesus monkey kidney epithelial cell line, a representative normal cell line, was investigated. All the tested Au(III) porphyrin complexes were non-cytotoxic in LLC-MK2 cells. For AuTPP, more than 80% LLC-MK2 cell viability was observed at concentrations lower than 5 μM.

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