Catalysis Science & Technology最新文献

{"title":"Enhancing activity and selectivity of palladium catalysts in ketone α-arylation by tailoring the imine chelate of pyridinium amidate (PYA) ligands.","authors":"Esaïe Reusser, Michael Aeschlimann, Martin Albrecht","doi":"10.1039/d4cy01337a","DOIUrl":"https://doi.org/10.1039/d4cy01337a","url":null,"abstract":"<p><p>Even though α-arylation of ketones is attractive for direct C-H functionalization of organic substrates, the method largely relies on phosphine-ligated palladium complexes. Only recently, efforts have focused on developing nitrogen-based ligands as a more sustainable alternative to phosphines, with pyridine-functionalized pyridinium amidate (pyr-PYA) <i>N</i>,<i>N</i>'-bidentate ligands displaying good selectivity and activity. Here, we report on a second generation set of catalyst precursors that feature a 5-membered N-heterocycle instead of a pyridine as chelating unit of the PYA ligand to provide less steric congestion for the rate-limiting transmetalation of the enolate. To this end, new heterocycle-functionalized PYA palladium(ii) complexes containing an oxazole (5b), <i>N</i>-phenyl-triazole (5c), <i>N</i>-methyl pyrazole (5d), <i>N</i>-phenyl-pyrazole, (5e), <i>N</i>-xylyl-pyrazole (5f), and <i>N</i>-isopropyl-pyrazole (5g) were synthesized compared to the parent pyr-PYA complex 5a. Less packing of the palladium coordination sphere was evidenced from solid state X-ray diffraction analysis. While the catalytic activity of the oxazole system was lower, all other complexes showed higher activity. In particular, complex 5g comprised of an electron-donating and sterically demanding iPr-pyrazole chelating PYA ligand is remarkably stable towards air and moisture and shows outstanding catalytic activity with complete selectivity (>99% yield) and turnover frequencies up to 1200 h^-1, surpassing that of parent 5a by one order of magnitude and rivalling the most active phosphine-based palladium systems. Kinetic studies demonstrate a first order rate-dependence on palladium and the substrate. Some deviation of linearity together with poisoning experiments suggest a mixed homogeneous/heterogeneous pathway, though the reproducible kinetics of <i>in situ</i> catalyst recycling experiments strongly point to a molecularly defined active species, demonstrating the high potential of PYA-based ligands.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11701426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reduction behavior of PdO-NiO/SiO₂: how Pd location affects cinnamaldehyde hydrogenation.","authors":"Rim C J van de Poll, Heiner Friedrich, Emiel J M Hensen","doi":"10.1039/d4cy01190b","DOIUrl":"https://doi.org/10.1039/d4cy01190b","url":null,"abstract":"<p><p>In this work, we study the reducibility of a PdO precursor placed by strong electrostatic adsorption on either NiO or SiO₂ of NiO/SiO₂ obtained by incipient wetness impregnation. The catalysts were characterized by HAADF-STEM, quasi-<i>in situ</i> XPS, CO IR spectroscopy and H₂ chemisorption as a function of the reduction temperature and evaluated for their performance in cinnamaldehyde hydrogenation. PdO on SiO₂ requires reduction at higher temperatures to achieve appreciable rates of cinnamaldehyde hydrogenation. Pd placed on NiO particles dispersed on the SiO₂ support can already be reduced at room temperature and show a higher activity in cinnamaldehyde hydrogenation, which is argued to be due to the higher Pd dispersion obtained at low reduction temperatures.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11694623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 utilization for aromatics synthesis over zeolites","authors":"Lin Li, Hao Li, Huan Li, Wenhui Ding and Jianping Xiao","doi":"10.1039/D4CY01434K","DOIUrl":"https://doi.org/10.1039/D4CY01434K","url":null,"abstract":"<p >Aromatic hydrocarbons are essential petrochemical intermediates traditionally produced through naphtha reforming, where feedstock costs account for a substantial portion of total manufacturing expenses. Expanding the range of raw materials for aromatics production is therefore highly desirable. The direct utilization of CO<small>₂</small> or co-conversion with the abundant light alkanes from shale gas to produce aromatic hydrocarbons has both environmental and economic advantages in terms of reducing greenhouse gases and aromatics production costs. In this perspective, we have reviewed two CO<small>₂</small>-based pathways for aromatics synthesis over zeolites: direct CO<small>₂</small>-to-aromatics conversion, and CO<small>₂</small>-oxidative dehydrogenation and aromatization pathways. CO<small>₂</small> utilization for aromatics synthesis was discussed from the viewpoints of catalyst components, active sites, and the role of CO<small>₂</small> in reaction mechanisms, as well as aromatics selectivity regulation. Lastly, we proposed the challenges and opportunities that lie ahead for advancing aromatics production with the utilization of CO<small>₂</small>.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 234-248"},"PeriodicalIF":4.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ni single atom catalyst with high Ni–Nx content for efficient electrocatalytic reduction of CO2†","authors":"Yuting Feng, Qing Mao, Hongbin Yang, Wei Zhou, Dengye Yang and Yanfei Gao","doi":"10.1039/D4CY01249F","DOIUrl":"https://doi.org/10.1039/D4CY01249F","url":null,"abstract":"<p >The CO<small>₂</small> electrocatalytic reduction reaction (CO<small>₂</small>RR) is currently an effective strategy for mitigating excessive global carbon dioxide emissions and accelerating the carbon cycle. Nonetheless, there are still significant obstacles to develop CO<small>₂</small>RR catalysts with superior activity and excellent selectivity. Herein, we report a porous nitrogen-doped carbon material (Ni/NC-<em>x</em>) with high content of Ni–N<small>_<em>x</em></small> units prepared by hydrothermal and pyrolytic methods. The content of Ni–N<small>_<em>x</em></small> in Ni/NC-<em>x</em> samples was controlled by finely adjusting the proportion of additive PVP. The optimized Ni/NC-2 : 1 catalyst showed a CO partial current density (<em>j</em><small>_CO</small>) of 46.88 mA cm<small>⁻²</small> and a CO faradaic efficiency (FE<small>_CO</small>) of up to 96% at −0.73 V <em>vs.</em> RHE; a FE<small>_CO</small> of 88% can be maintained in the flow cell while achieving <em>j</em><small>_CO</small> of 273.63 mA cm<small>⁻²</small>. Analysis through a thermodynamic–kinetic mechanism model suggests that the bifunctional Ni–N<small>_<em>x</em></small> sites help to reduce the barrier of CO<small>₂</small> chemisorption and provide sufficient *CO<small>₂</small> for electron transfer during the reaction, hence enhancing the kinetics of CO<small>₂</small>RR processes.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 514-522"},"PeriodicalIF":4.4,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural contributions of Zn in enhancing CO2 hydrogenation to methanol over ZnxZrOy catalysts†","authors":"Zinat Zanganeh, Max Bols, Parviz Yazdani, Hilde Poelman and Mark Saeys","doi":"10.1039/D4CY01175A","DOIUrl":"https://doi.org/10.1039/D4CY01175A","url":null,"abstract":"<p >Single-reactor CO<small>₂</small> conversion to light olefins <em>via</em> methanol is currently obstructed by the incompatible reaction conditions for the CO<small>₂</small> to methanol and methanol to olefin steps. The conventional Cu/ZnO–Al<small>₂</small>O<small>₃</small> CO<small>₂</small> hydrogenation catalysts produce excessive CO and rapidly deactivate at the high temperatures preferred for methanol to olefins with zeolite or SAPO catalysts. Zn<small>_<em>x</em></small>ZrO<small>_<em>y</em></small> catalysts are a promising alternative to Cu/ZnO–Al<small>₂</small>O<small>₃</small>. We studied Zn<small>_<em>x</em></small>ZrO<small>_<em>y</em></small> with varying Zn doping levels, using XRD, XPS, H<small>₂</small>-TPR, CO<small>₂</small>-TPD, N<small>₂</small>-physisorption, DRIFT, and Raman spectroscopy, along with CO<small>₂</small> conversion and methanol selectivity measurements, to examine structure-performance relationships in CO<small>₂</small> hydrogenation to methanol. The interplay between dopant concentration, calcination temperature, and crystal structure dictates the catalyst's phase composition, which correlates with catalytic performance. The pristine ZrO<small>₂</small> is a mixture of tetragonal and monoclinic phases. At Zn/Zr = 0.01, the tetragonal phase is dominant, while for Zn/Zr = 0.07–0.28, the cubic phase is obtained. Above Zn/Zr = 0.28, phase separation of ZnO occurs. For CO<small>₂</small> hydrogenation to methanol, a Zn/Zr = 0.07–0.28 performs best. Zinc addition increases catalyst surface area, pore volume, basicity, and reducibility. XPS analysis reveals zinc enrichment near the surface and the formation of Zr–O–Zn species upon Zn incorporation into ZrO<small>₂</small>. A clear correlation between Zn content and catalyst activity is generally absent, but this relationship becomes evident in cubic-phase materials. At least in part, the relevance of zinc doping for CO<small>₂</small> to methanol lies in its ability to distort the structure of zirconia, creating a cubic phase, with implications for selectivity that correlate with the adsorption of CO<small>₂</small> and H<small>₂</small>.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 563-579"},"PeriodicalIF":4.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01175a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Co-catalysis of propane dehydrogenation by Al2O3-supported Ni nanoparticles and VOx†","authors":"Guomin Li, Bin Wang, Xingchao Dai, Feng Shi, Yong Ding and Xinjiang Cui","doi":"10.1039/D4CY01216J","DOIUrl":"https://doi.org/10.1039/D4CY01216J","url":null,"abstract":"<p >The catalytic activity of NiV<small>₂</small>O<small>_<em>x</em></small>/Al<small>₂</small>O<small>₃</small> for propane dehydrogenation (PDH) at 500 °C was observed to be 2–5 times higher than those of their monometallic counterparts, primarily attributed to the synergistic effect of Ni nanoparticles (NPs) and VO<small>_<em>x</em></small>. This synergy was concluded to promote not only the desorption of propylene but also the generation and desorption of H<small>₂</small>, significantly improving the catalytic performance.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 318-322"},"PeriodicalIF":4.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of size, metal loading and oxygen vacancies on the catalytic performance of Au/CeO2−x in the sunlight-powered reverse water gas shift reaction†","authors":"Jordi Volders, Sander Bossier, Sander Stulens, Bjorn Joos, Thomas Vranken, Francesc Sastre, Jan D'Haen, Ken Elen, Marcel A. Verheijen, Pegie Cool, An Hardy, Pascal Buskens and Marlies K. Van Bael","doi":"10.1039/D4CY01194E","DOIUrl":"https://doi.org/10.1039/D4CY01194E","url":null,"abstract":"<p >This study reports the conversion of CO<small>₂</small> and H<small>₂</small> to CO and H<small>₂</small>O at low temperature and low pressure (up to 203 °C, <em>p</em> = 3.5 bar) using plasmonic Au/CeO<small>_{2−<em>x</em>}</small> photocatalysts, with mildly concentrated sunlight as the sole energy source (up to 9 kW m<small>⁻²</small>). Systematic catalytic studies were carried out by varying the CeO<small>_{2−<em>x</em>}</small> particle size, Au particle size and loading, and the concentration of oxygen vacancies. Upon illumination, all Au/CeO<small>_{2−<em>x</em>}</small> catalysts showed a CO production of up to 2.6 ± 0.2 mmol CO per g<small>_Au</small> per h (104 ± 8 μmol CO per g<small>_cat</small> per h), while the supports without Au did not show any activity. We determined that both photothermal and non-thermal effects contribute to the light-driven reverse water-gas shift reaction catalysed by plasmonic Au/CeO<small>_{2−<em>x</em>}</small>. A photothermal contribution was found from the exponential relationship between the CO production and the solar irradiance. In the dark, all Au/CeO<small>_{2−<em>x</em>}</small> photocatalysts and supports without Au produced CH<small>₄</small> instead of CO with ≥97% selectivity, indicating a significant non-thermal contribution in light. A linear dependence of catalytic activity on the accessible interface area between CeO<small>_{2−<em>x</em>}</small> and Au was found, which is in line with an associative formate-mediated reaction mechanism occurring at the metal–support interface. Tuning the V<small>_O</small> content through thermal treatments yielded decreased photocatalytic activity for oxidised samples, identifying them as pre-catalysts. The stability of the Au/CeO<small>_{2−<em>x</em>}</small> photocatalysts was evaluated, demonstrating that the catalytic performance was affected by adsorption of H<small>₂</small>O as a reaction product, which could be fully restored upon heating <em>in vacuo</em>.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 486-500"},"PeriodicalIF":4.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01194e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting photoelectrochemical water splitting: enhanced hole transport in BiVO4 photoanodes via interfacial coupling†","authors":"Hairu Wang, Yuying Bai, Rongling Wang, Yanan Fu, Qiong Mei, Bo Bai and Qizhao Wang","doi":"10.1039/D4CY01284D","DOIUrl":"https://doi.org/10.1039/D4CY01284D","url":null,"abstract":"<p >In the realm of photoelectrochemical (PEC) water splitting, the oxygen evolution reaction (OER) poses a significant efficiency bottleneck. To address this challenge, multi-interfacial optimization of BiVO<small>₄</small>-based composites to enhance charge transport within the material matrix has emerged as a pivotal strategy for improving PEC performance. In this study, we present a comprehensive report on the design and fabrication of an innovative heterostructured NiFe-LDH/Co<small>₃</small>O<small>₄</small>/BiVO<small>₄</small> thin film. Through a series of meticulously designed experiments and characterization techniques, we delve into the operational mechanisms underlying the interfacial coupling effect of this composite photoanode. Notably, the sandwich-configured NiFe-LDH/Co<small>₃</small>O<small>₄</small>/BiVO<small>₄</small> photoanode demonstrates remarkable OER performance. Under standard solar simulation conditions, it achieves a photocurrent density of 4.7 mA cm<small>⁻²</small> at 1.23 V <em>vs.</em> RHE in a 1.0 M KBi solution, marking a nearly fourfold enhancement compared to the pure BiVO<small>₄</small> photoanode. Our structural, compositional, and electrochemical analyses reveal that NiFe-LDH functions as a highly effective cocatalyst, substantially reducing the overpotential for water oxidation. Furthermore, the strategic incorporation of Co<small>₃</small>O<small>₄</small> not only establishes a built-in electric field at the BiVO<small>₄</small> interface, thereby facilitating efficient charge separation, but also fine-tunes the electronic structure of the metal centres in NiFe-LDH, leading to an increased number of oxidation active sites. These synergistic effects significantly enhance the charge separation efficiency and long-term operational stability of the PEC system. These advancements are attributed to the intricate interfacial coupling between NiFe-LDH, Co<small>₃</small>O<small>₄</small> nanoparticles, and BiVO<small>₄</small>, underscoring the immense potential of this composite material in the domain of efficient photoelectrocatalysis.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 405-415"},"PeriodicalIF":4.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Operando spectroscopy unravels the nature of deactivating species and their precursors in alkene oligomerization catalysis†","authors":"Nibras Hijazi, Juan Carlos Navarro de Miguel, Jose Luis Cerrillo, Rushana Khairova, Xuan Gong, Edy Abou-Hamad, Javier Ruiz-Martínez and Jorge Gascon","doi":"10.1039/D4CY01057D","DOIUrl":"https://doi.org/10.1039/D4CY01057D","url":null,"abstract":"<p >Alkene oligomerization represents an attractive methodology to produce environmentally friendly synthetic fuels, free of aromatics. However, the materials that catalyze this reaction undergo complex deactivation, the understanding of which remains elusive. To better understand deactivation, its mechanism and pathways, <em>operando</em> UV-vis spectroscopy has been implemented alongside solid-state NMR spectroscopy in the oligomerization of propene (at 523 K and 50–100 kPa of propene pressure) over highly acidic ZSM-5 and zeolite beta. Measured spectra reveal that deactivation is initiated by the formation of an allylic hydrocarbon pool comprising dienes and cyclopentenyl cations. This hydrocarbon pool acts as a scaffold for the formation of alkylated benzenes (<em>e.g.</em>, 1,3-di-<em>tert</em>-butylbenzene) which, due to spatial limitations, end up retained as coke species. The hydrocarbon pool also mediates further growth of alkylated benzenes into polycyclic aromatic hydrocarbons, a process that forms larger coke species. However, as in the case of ZSM-5, this process can be retarded by the shape selectivity of the zeolite. The spectra also show that the formation of long oligomers (C<small>₁₄</small>–C<small>₁₆</small>), irrespective of their degree of branching, renders them entrapped within zeolite pores.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 376-385"},"PeriodicalIF":4.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01057d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pd(ii) NCSe–pincer complexes for regioselective cross-dehydrogenative coupling of arylthiophenes with hetero(arenes)†","authors":"Sohan Singh, Suman Mahala, Nattamai Bhuvanesh and Hemant Joshi","doi":"10.1039/D4CY01198H","DOIUrl":"https://doi.org/10.1039/D4CY01198H","url":null,"abstract":"<p >Herein, we have presented the synthesis of two new NCSe pincer ligands by the reaction of 3-((phenylselanyl)methoxy)benzaldehyde (<strong>P</strong>) with alkyl amines (<small>^<em>t</em></small>butylamine (<strong>L1</strong>) and 1-adamantylamine (<strong>L2</strong>)). The reaction of ligands <strong>L1</strong> and <strong>L2</strong> with PdCl<small>₂</small>(CH<small>₃</small>CN)<small>₂</small> precursor resulted in the formation of palladium pincer complexes <strong>C1</strong> and <strong>C2</strong>, respectively. The newly designed compounds were characterized using various spectroscopic and analytical techniques like <small>¹</small>H and <small>¹³</small>C{<small>¹</small>H} nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectroscopy, high-resolution mass spectrometry (HRMS), and ultraviolet-visible (UV-visible) spectroscopy. The coordination mode of the ligand with palladium metal was authenticated with the help of single-crystal X-ray diffraction studies. Both palladium complexes showed distorted square planar geometry around the palladium center having NCSe pincer coordination mode. The NCSe palladium pincer complexes were utilized as a catalyst for regioselective cross-dehydrogenative coupling (CDC) of 2-arylthiophenes with hetero(arenes). Intriguingly, only 2.5 mol% catalyst loading is adequate for achieving higher yields (65–89%) of heterocoupled products. A broad substrate scope of hetero(arenes) showed excellent tolerance towards the developed protocol under mild reaction conditions and short reaction time. The poisoning experiments showed the homogeneous nature of the catalysis process. The plausible reaction mechanism was studied using control experiments and time-dependent HRMS studies. Among the complexes, the sterically bulky adamantyl side arm containing palladium pincer complex (<strong>C2</strong>) showed a higher yield of CDC reaction.</p>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 2","pages":" 523-536"},"PeriodicalIF":4.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142993747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}