{"title":"Performance, Kinetic and Thermodynamic Study of Cobalt (II) Phosphate as a Promising Catalyst for Organic Dyes Removal","authors":"Djaafar Meziani, Yasmina Roumila, Nesrine Khesrani, Djamila Ould Larbi, Faouzi Saib, Mohamed Trari","doi":"10.1007/s10563-025-09457-2","DOIUrl":"10.1007/s10563-025-09457-2","url":null,"abstract":"<div><p>Cobalt phosphate Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> (CoPO) was synthesized by wet chemical method in the presence of oxalate for its application as a heterogeneous Fenton-like catalyst to remove Basic Yellow 28 (BY-28) dye from water. The formation of the CoPO phase was confirmed by XRD analysis, revealing a crystallite size of 27 nm. The optimal synthesis temperature was found to be 800 °C based on thermal analysis. The modified synthesis method allows for obtaining a homogeneous distribution of spherical grains with surface area of 3.78 m<sup>2</sup> g<sup>−1</sup>. The catalytic activity is attributed to hydroxyl radicals (HO·) generated through the activation of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). The degradation rate decreased to 10% after 300 min in the presence of 500 mM tert-butyl alcohol (TBA), a well-known HO· scavenger. Several reaction parameters influencing the Fenton-like process were investigated and the highest BY-28 degradation yield was achieved under neutral pH with a CoPO dose of 1.25 g/L and H<sub>2</sub>O<sub>2</sub> concentration of 50 mM. The catalyst was successfully reused five times, maintaining a removal efficiency of 80% after 60 min with a good crystallinity revealed by XRD analysis. Moreover, other organic dyes commonly found in the textile wastewater were also degraded. The kinetic study revealed that the degradation reaction of BY-28 follows the Behnajady-Modirshahla-Ghanbery (BMG) model, while the thermodynamic analysis indicated that the process is non-spontaneous and endothermic. This study offers valuable insights into the performance, kinetics, and thermodynamics of cobalt phosphate-based Fenton-like catalysts for the degradation of organic dyes, highlighting their potential as effective candidates for such applications.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"284 - 296"},"PeriodicalIF":2.3,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Photocatalytic Degradation of Parcetamol and Ofloxacin by TiO2/Co0.6Cu0.25Zn0.15Fe2O4 Heterostructure Under Real Sunlight","authors":"Rostom Lakhdar, Nahla Dhen, Kais elghniji","doi":"10.1007/s10563-025-09454-5","DOIUrl":"10.1007/s10563-025-09454-5","url":null,"abstract":"<div><p>In this study, a magnetic TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure was developed in an attempt to degrade pharmaceutical drugs and to enable separation of the catalyst from the wastewater after the process. Magnetic nanoparticles Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> are obtained by co-precipitation method using (cetyltrimethylammonium bromide, CTAB) as surfactant. Further, the Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles are mixed from the very beginning with the titanium precursor solution. The calcination crystallizes the TiO<sub>2</sub> and promotes the jonction of magnetic nanoparticles to the surface of titania. X-ray diffraction and Raman confirm that the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure consists of consists of Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> and TiO₂ phases without any additional peaks, indicating a successful integration of the two materials. The integration of Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> with TiO<sub>2</sub> leads to non-uniform distribution of spherical particles. Spectra of UV-Vis absorption of the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> displays a notable redshift compared to pure TiO₂. The photocatalytic effect of the TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> in two applied pharmaceutical drugs was higher than in commercial Degussa P-25 and TiO<sub>2</sub> under real sunlight. It was reported that TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> had 94.2% degradation on paracetamol and complete degradation for ofloxacin within 150 min. The improvement in the photocatalytic activity can be attributed to the efficient charge carrier separation at the interface of TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> heterostructure. A possible photocatalytic mechanism for drugs degradation by TiO<sub>2</sub>/Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub> was proposed based on the results of trapping experiments and the energy bands of TiO<sub>2</sub> and Co<sub>0.6</sub>Cu<sub>0.25</sub>Zn<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub>. The recyclability of the photocatalyst was ascertained over five consecutive cycles, indicating the stability of the catalyst.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"268 - 283"},"PeriodicalIF":2.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qiuyun Zhang, Yanhui Lei, Jialu Wang, Yutao Zhang, Peihua Ma
{"title":"Zeolitic Imidazolate Frameworks-Based Materials for Accelerating Sustainable Biodiesel Production: A Mini Review","authors":"Qiuyun Zhang, Yanhui Lei, Jialu Wang, Yutao Zhang, Peihua Ma","doi":"10.1007/s10563-025-09453-6","DOIUrl":"10.1007/s10563-025-09453-6","url":null,"abstract":"<div><p>The need for sustainable and eco-friendly fuel alternatives has grown due to practical considerations in recent years. Biodiesel has garnered significant interest as a promising petroleum diesel substitute due to its renewability, biodegradability, and free of sulfur. However, developing advanced and highly efficient heterogeneous catalysts is crucial in the biodiesel production. Among various heterogeneous catalysts, metal–organic frameworks (MOFs) have become the key catalytic materials because of their distinctive and fascinating characteristics. Among the currently explored MOFs, ZIFs have undergone many studies, including catalysis, separation, and sensing, owing their simple and fast preparation process, ultrahigh surface areas, and well-defined active sites. In this review article, the current advances of different types of MOF-based catalysts to accelerate biodiesel production have been discussed. More importantly, it aims to summarize critically the performance, characterization, and reusability of various ZIFs-based catalysts (single ZIFs catalysts, supported ZIFs-based catalysts, and ZIFs-derived catalysts) in catalyzing the production of sustainable biodiesel. Finally, the limitations, the challenges, and future developments of ZIFs-based hybrid catalysts are also proposed, hoping that this timely review can be useful for researchers in promoting sustainable biodiesel generation and other relevant biorefineries using ZIFs-based catalysts.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"195 - 214"},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vitisha V. Vikhe, Amruta K. Mhaske, Vitthal K. Vikhe, Bhagwat K. Uphade, Anil G. Gadhave
{"title":"Fe3O4@HNTs-Cellulose-HClO4: New Heterogeneous Catalyst for Smooth and Effective Synthesis of 4H-Pyran and 4H-Chromene Derivatives","authors":"Vitisha V. Vikhe, Amruta K. Mhaske, Vitthal K. Vikhe, Bhagwat K. Uphade, Anil G. Gadhave","doi":"10.1007/s10563-025-09452-7","DOIUrl":"10.1007/s10563-025-09452-7","url":null,"abstract":"<div><p>This study involved the fabrication of a novel catalyst based on natural clay via straightforward co-precipitation technique. Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles and cellulose covalently grafted onto the Halloysite nanotubes (HNTs) after being functionalized with perchloric acid (Fe<sub>3</sub>O<sub>4</sub>@HNTs-Cellulose-HClO<sub>4</sub>). It was characterized by using different analytical techniques to confirm its formation, including Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) pattern, Energy dispersive X-ray (EDAX) analysis, Thermogravimetric analysis (TGA), and Scanning electron microscopy (SEM). This novel heterogeneous catalyst was effectively applied in the synthesis of 4-aryl-4H-pyran-3-carboxylate using an aromatic aldehyde, ethyl acetoacetate and malononitrile and Tetrahydro-4H-chromene using an aromatic aldehyde, dimedone and ethyl cyanoacetate. Gentle reaction parameters, minimal catalyst costs, environmental friendliness, and excellent product yields (97 & 96% respectively) are some of the primary advantages of this approach. The catalyst is easily separated and can be recycled five times without experiencing a noticeable decrease in activity and the hot filtration test demonstrated the catalyst’s heterogeneity. With mild reaction conditions and room temperature, easy purification, simple workup, and excellent yields this heterogeneous catalyst demonstrated high efficiency in green media.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"249 - 267"},"PeriodicalIF":2.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huanjin Jiang, Jie Yang, Wenhao Wang, Hailong Fang, Jixiang Chen
{"title":"Resorcinol–Formaldehyde Resin and Sodium Dodecyl Sulfate Co-assisted Mesoporous TiO2 Supported Ni3Sn2 Intermetallic Compound Catalysts for In-Situ Hydrodeoxygenation of Methyl Palmitate with Methanol as the Hydrogen Donor in Water","authors":"Huanjin Jiang, Jie Yang, Wenhao Wang, Hailong Fang, Jixiang Chen","doi":"10.1007/s10563-025-09451-8","DOIUrl":"10.1007/s10563-025-09451-8","url":null,"abstract":"<div><p>TiO<sub>2</sub> supported Ni<sub>3</sub>Sn<sub>2</sub> intermetallic compound (IMC) catalysts were prepared by the coprecipitation method using resorcinol–formaldehyde resin (RF) and sodium dodecyl sulfate (SDS) as templates, and they were tested for in situ hydrodeoxygenation (HDO) of methyl palmitate using methanol as the hydrogen donor in the aqueous phase. It has been found that introducing SDS and RF enhances specific surface area, pore volume and pore diameter and reduces the Ni<sub>3</sub>Sn<sub>2</sub> IMC particles and their electronic interaction with TiO<sub>2</sub>. In in situ HDO of methyl palmitate, the catalysts prepared with co-introducing RF and SDS exhibit higher activity than that without templates and those separately introducing RF and SDS. The catalyst activity is mainly related to the Ni<sub>3</sub>Sn<sub>2</sub> IMCs particles size and the degree of the electronic interaction between Ni<sub>3</sub>Sn<sub>2</sub> and TiO<sub>2</sub>. The catalyst with introducing a suitable amount of RF and SDS gives the n-pentadecane yield of 87.3% at 330 °C, and it is slightly deactivated after reaction for five times due to carbon deposition and the sintering of Ni<sub>3</sub>Sn<sub>2</sub> IMC particles.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"236 - 248"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdull Hafidz Hassan, Muzakkir Mohammad Zainol, Mohd Asmadi
{"title":"Experimental and Comparative Analysis on Properties and Performance of SO₃H-Functionalized Carbon Catalyst in Ethyl Levulinate Synthesis from Levulinic Acid","authors":"Abdull Hafidz Hassan, Muzakkir Mohammad Zainol, Mohd Asmadi","doi":"10.1007/s10563-025-09449-2","DOIUrl":"10.1007/s10563-025-09449-2","url":null,"abstract":"<div><p>Hydrothermal sulfonation is a method that introduces sulfonic acid groups as active sites onto suitable support materials under autogenous pressure conditions. In this work, the effectiveness of hydrothermal sulfonation was studied on various lignin-carbons prepared at different thermal conditions of 400–600 °C for 1 and 2 h. The sulfonated lignin-carbon catalysts produced were characterized and evaluated for their catalytic performance in levulinic acid (LA) esterification under selected reaction conditions to synthesize ethyl levulinate (EL). The catalyst with the highest EL yield and LA conversion was selected for extended reaction time (1–6 h) to study the time-dependent performance in LA esterification. The influence of catalyst acidity and the surface area of the prepared catalysts on the reaction behavior was assessed and further analyzed through an extensive comparative study with related literature. The results indicated that all lignin-carbon catalysts exhibited enhanced porous structures and surface areas of 193–368 m²/g, along with amorphous characteristics. Additionally, a reduction in catalyst acidity was observed, decreasing from 1.3 to 0.5 mmol/g as the thermal conditions of lignin-carbon preparation increased. The catalytic activity was found to decrease for lignin-carbon prepared at higher thermal conditions. The catalyst performance achieved 75.9 mol% EL yield (TOF of 0.02 s⁻¹) with 76.5% LA conversion, and the EL yield increased to 81.1 mol% when the reaction time was extended to 5 h. The carbon catalyst can be reused over five reaction cycles with a decrease in EL yield from 81.1 mol% to 62.2 mol%. In comparative study, catalyst acidity plays an important role in catalyzing the esterification reaction of levulinic acid to ethyl levulinate, serving as a key design indicator for carbon-based catalysts. Catalyst acidity showed a positive correlation with reaction performance, and further increases in surface area (> 200 m²/ g) did not significantly enhance reaction performance. Besides, hydrothermal sulfonation demonstrated potential as a catalyst modification method and could be recommended for carbon-based catalyst preparation.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 3","pages":"215 - 235"},"PeriodicalIF":2.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhanced Photocatalytic Activation of Peroxymonosulfate Using Ag-TiO2/SiO2 Monolith for Phenol Degradation","authors":"Thi-Ngoc-Suong Ho","doi":"10.1007/s10563-025-09448-3","DOIUrl":"10.1007/s10563-025-09448-3","url":null,"abstract":"<div><p>Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith photocatalyst was synthesized by a simple sol-gel and dip-coating method with AgNO<sub>3</sub> as Ag source, titanium <i>n</i>-butoxide and tetraethoxysilane as Si source. Photocatalytic activities of the synthesized Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith were evaluated through phenol degradation under UVA light irradiations. EDX-mapping verified that the Ag nanoparticles were successfully incorporated into the photocatalyst and evenly deposited on the surface of TiO<sub>2</sub>/SiO<sub>2</sub>. The surface and cross-sectional SEM images of the monolith material confirmed the successful coating of Ag(3%)-TiO<sub>2</sub>/ SiO<sub>2</sub> catalyst on the monolith surface (Ag(3%)-TS05/S/M). The study showed that the peroxymonosulfate (PMS)/Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with appropriate Ag doping exhibited excellent activity under UVA light irradiation, was easy to separate from contaminants, and had good reusability. After four rounds of recycling, about 92% of the phenol was removed within. 240 min by the PMS/Ag(3%)-TiO<sub>2</sub>/SiO<sub>2</sub> monolith system with a sulfate radical as the main oxidation species. A new bond between SiO<sub>2</sub> and TiO<sub>2</sub> was formed to prevent TiO<sub>2</sub> removal during wastewater treatment. The performance of our Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with the presence of PMS makes it highly suitable for practical application in treating wastewater contaminated with phenol pollutants.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"185 - 193"},"PeriodicalIF":2.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhanced Degradation of Oxytetracycline Hydrochloride: A Comparative Study of Adsorption and Catalytic Wet Air Oxidation Using Cuttlefish Bone/CuFe2O4 Ferrite Composites","authors":"İlayda Özarabacı, Gülin Ersöz","doi":"10.1007/s10563-025-09447-4","DOIUrl":"10.1007/s10563-025-09447-4","url":null,"abstract":"<div><p>The direct and sequential application of adsorption and catalytic wet air oxidation (CWAO) methods was evaluated for the removal of the veterinary antibiotic oxytetracycline hydrochloride (OTC-HCl) from wastewater. Cuttlefish bone (CFB), a natural marine material, was employed as both an adsorbent and a catalyst support to synthesize the composite CuFe₂O₄/CFB material. The optimal conditions for OTC-HCl adsorption were found to be 0.09 g/L CFB, pH 7.6, and 282 rpm, resulting in a 24% removal efficiency. The Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models were evaluated, with the Temkin isotherm identified as the most suitable. The adsorption kinetics followed a second-order kinetic model. The Weber–Morris intraparticle diffusion model suggested that both liquid film and intraparticle diffusion processes govern the adsorption kinetics. In the catalytic wet air oxidation process, a 75% removal efficiency was achieved at 0.5 g/L CuFe₂O₄/CFB, pH 4, and 100 °C. The most suitable kinetic model for describing the CWAO of OTC-HCl was found to be a two-step first-order reaction rate model. In the hybrid treatment process, CWAO was applied following adsorption, and toxicity tests indicated that no toxic by-products were generated during the sequential treatment.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"167 - 184"},"PeriodicalIF":2.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spatial Configurational Construction of Pt-ZSM-5 Bifunctional Catalysts for Hydroisomerization of n-Heptane","authors":"Mengxuan Zhu, Hongqing Li, Xin Wang, Longyang Wang, Rui Wang, Heng Jiang, Changzi Jin","doi":"10.1007/s10563-025-09446-5","DOIUrl":"10.1007/s10563-025-09446-5","url":null,"abstract":"<div><p>Design of efficient metal-acid bifunction catalysts is of significance for development of hydroisomerization of linear alkanes. In this study, the spatial configurational construction of Pt-ZSM-5 catalytic system was achieved by fabrication of acidic ZSM-5 zeolite and mesoporous silica core-shell composites equipped with controlled location of Pt sites, which aim to explore the effect of functional sites proximity on isomerization reactivity. A series of characterization techniques such as X-ray diffraction, transmission electronic microscopy, N<sub>2</sub> physical adsorption, NH<sub>3</sub> temperature programmed desorption, X-ray photoelectron spectroscopy and so on had confirmed that the synthesized core-shell bifunctional catalysts with different Pt location possessing similar textural, acid and metal properties. In the catalytic hydroisomerization of <i>n</i>-heptane, however, the catalyst with Pt sites locating at acid zeolite exhibits superior <i>n</i>-heptane conversion and isomerization selectivity, which indicates that proximity of active sites at atomic scale may be more conducive to their synergistic effect when the diffusional limitation from zeolitic channel is minimized. These results had presented new direction for the preparation of efficient bifunctional catalysts in hydroisomerization of linear alkanes.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"155 - 166"},"PeriodicalIF":2.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermo-Responsive Poly (N-isopropyl acrylamide-b-vinylimidazole)/Pd Catalyst: Catalytic Application of Suzuki–Miyaura Coupling Reaction in Water","authors":"Soheila Ghasemi, Najme Zare, Milad Ghezelsofloo, Abdulhamid Dehghani, Hadieh Rahbar Kafshboran","doi":"10.1007/s10563-024-09445-y","DOIUrl":"10.1007/s10563-024-09445-y","url":null,"abstract":"<div><p>This study reports a facile procedure for synthesizing and characterizing a novel catalyst based on thermo-responsive poly (<i>N</i>-isopropyl acrylamide-<i>b</i>-vinylimidazole)/Pd catalyst (PNIPAM-<i>b</i>-PVIm/Pd). A well-structured diblock copolymer was prepared using RAFT-controlled strategy. Initially, PNIPAM was fabricated with a lower critical solution temperature (LCST) at around 32 °C. Within another step, PNIPAM as a macro-RAFT agent and vinylimidazole as a monomer were utilized for synthesizing PNIPAM-<i>b</i>-PVIm. The reaction of PNIPAM-<i>b</i>-PVIm with Pd(OAc)<sub>2</sub> for one day, taken after applying NaBH<sub>4</sub> as a reducing agent, led to the synthesizing of PNIPAM-<i>b</i>-PVIm supported Pd. This new catalyst was characterized by different methods, <i>i.e.</i>, ICP, FT-IR, NMR, UV–Vis spectrophotometer, TGA, DLS, SEM, EDX, and SEC. This catalytic system was utilized to deliver an assortment of substituted biaryl compounds in water with good to excellent yields through the Suzuki coupling reaction. The greatest advantage of this catalytic platform is related to the reusability of the catalyst up to 7 times and non-use of organic solvent in coupling reactions. Simple purification of the coupling products due to the effortless recyclability of the catalysts is another characteristic of the method. This important characteristic is achieved by just adding diethyl ether to the reaction mixture to extract the biphenyls. The catalyst remains intact in aqueous phase and reused in other reaction runs without considerable loss of efficiency.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"139 - 154"},"PeriodicalIF":2.1,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}